In elimination method one equation is multiplied by the negative coefficient of the other
so then in this case y have coefficient 3, the other equation have coefficient y is 1 . Then divide 3/1 = 3 and change sign ,gives -3.
Then the final answer is -3, option c)
Evaluate the expression a-5 -b, when a= 10 and b=4
Given the expression:
a - 5 - b
we want to evaluate it when a = 10 and b = 4. To do it, we have to replace these values into the equation as follows:
10 - 5 - 4 = 1
A six -sided fair number cube is rolled once . What is the probability that the result is a 2 or a 5? Select one :1/61/32/55/6
total number of sides = 6
sides that are 2 or 5 = 2
Divide the sides thata re 2 or 5 (2) by the total sides:
2 /6 = 1/3
Suppose you are driving to your vacation destination. You are driving at an average rate of 60 miles per hour. You must drive a total of 235 miles. If you had already driven 55 miles, how long will it take you to reach your destination?
I only need the answer
THANK YOU!!
The expression is √3/2 (sin x) - (cos x)/2
Here we have
sin( x + 11π/6)
We have to express it in terms of sin(x) and cos(x)
sin ( 2π - π/6 + x)
sin ( 2π + ( x - π/6))
sin(2π + Ф ) = sin Ф
So
sin( x - π/ 6)
Formula :
sin(A -B) = sin A cos B - cos A sin B
sin( x - π/ 6)
sin x cos π/6 - cos x sin π/6
con π/6 = √3/2 and sin π/6 = 1/2
√3/2 sin x - 1/2 cos x
Therefore the expression is √3/2 sin x - 1/2 cos x.
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Factor the expression 54x2-6y^2?
how would i rewrite the polynomial in the form ax^2+bx+c and then identify the values of a,b, and c1/3x^2+7-6x
Answer:
a=1/3, b=-6, c=7
Explanation:
Given the polynomial:
[tex]\frac{1}{3}x^2+7-6x[/tex]We reorder it to rewrite the polynomial in the form ax²+bx+c:
[tex]\frac{1}{3}x^2-6x+7[/tex]Next, by comparing:
• a is the coefficient of x²: a=1/3
,• b is the coefficient of x: b=-6
,• c is the constant: c=7
[tex]a=\frac{1}{3},b=-6,c=7[/tex]How to calculate mode and media
Place the data points in descending order of size to find the center number. The median is as shown. The median is the average of the two numbers if there are two of them. The number that appears the most frequently in a piece of data is the mode.
The middle value in a list that is arranged from smallest to greatest is called the median. The value that appears the most frequently on the list is the mode. Organize the numbers in a set in whatever order—from lowest to highest or highest to lowest—and then tally the frequency with which each number appears in the group. The mode is the one that shows up most frequency
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What is the solution set to -3x - 39 > 12
Answer:
x < -17
Step-by-step explanation:
-3x - 39 > 12 Add 39 to both sides
-3x > 51 Divide by -3 and flip the inequality sign
x<-17
Answer: x < -17
Step-by-step explanation: add 39 to both sides then divide 3 on 3x and 51 That is how you answer it. flip the sign to a positive
Complete the following truth table. Use T for true and F for false.You may add more columns, but those added columns will not be graded.
Given,
The equation of table is
[tex]\urcorner p\wedge\urcorner q^{}[/tex]Here,
[tex]\begin{gathered} p\text{ q }\urcorner p\text{ }\urcorner q\text{ }\urcorner p\wedge\urcorner q \\ T\text{ T F F F} \\ T\text{ F F T F} \\ F\text{ T T F F} \\ F\text{ F T T T} \end{gathered}[/tex]Hence, the output of the table is F, F, F, and T
(d) Find the domain of function R. Choose the correct domain below.
Answer:
d
Step-by-step explanation:
The number of years must be non-negative.
This eliminates all of the options except for d.
please can you help me to solve an equation ?Determine whether the statement is true or false : The slope of the line y = 1 is zero
The given line equation is y=1.
The general form of the line equation is
[tex]y=mx+b[/tex]Comparing this equation with y=1, we get
[tex]mx+b=1[/tex][tex]mx+b=(0)x+1[/tex]Compare coefficient of x and constant term, we get
[tex]m=0\text{ and b=1}[/tex]Here m=0 is the slope of the line y=1.
Hence the slope of the line y = 1 is zero.
This statement is true.
A boat heading out to sea starts out at Point AA, at a horizontal distance of 1035 feet from a lighthouse/the shore. From that point, the boat’s crew measures the angle of elevation to the lighthouse’s beacon-light from that point to be 8^{\circ} ∘ . At some later time, the crew measures the angle of elevation from point BB to be 5^{\circ} ∘ . Find the distance from point AA to point BB. Round your answer to the nearest foot if necessary.
The angle of elevation reduces. The distance between points A and B is roughly 1,269.9 ft.
The distance between point A and the lighthouse is 968 feet.
The angle of elevation from point A to the lighthouse is 7 degrees.
Elevation angle from point B to the lighthouse = 3°
The distance between points A and B.
tan 7° = Height of the sea / 968 feet
tan(7°) 968 feet 118.86 feet = height to the lighthouse
We have from point B;
tan 3° = 118.86 / Horizontal distance from B to HL
Therefore;
Horizontal distance from LH to boat = 118.6 / tan 30° = 2237.9 = feet
Therefore;
D is the distance between A and B.
D = Horizontal distance between B and LH - Horizontal distance between A and LH
A to B distance = 2237.9 feet − 968 feet 1269.9 feet
The distance between points A and B is 1,269.9 ft.
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Answer:
The Boat traveled 628 ft, from point A to point B.
Step-by-step explanation:
Its 628 bc I just got it correct on my hw.
Please help !
Place the following real numbers in order from least to greatest.
227
-3
-4.5
165
Answer: -4.5,-3,165,227
Step-by-step explanation:
Ganymede is one of Jupiter’s moons. It takes Ganymede 7 days, 3 hours, and 15 minutes to make one rotation around Jupiter. How many hours does it take Ganymede to complete a full rotation? Show your work using the correct conversion factors and make sure all conversion factors are labeled with appropriate units. You should have more than one conversion factor shown.
The number of hours it will take Ganymede to complete a full rotation is; 171.25 hours.
What is the fundamental principle of multiplication?Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
The first step must be to convert days to hours. A day is equivalent to the 24 hours.
1 day = 24 hours
24 x 7 = 168 hours
The second step must be to convert minutes to hours,
60 minutes = 1 hour
15 / 60 = 0.25 hours
Now, add up all the converted hours together;
Total hours = 168 hours + 3 hours + 0.25 hours
Total hours = 171.25 hours
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you want to use a spoon section of your yard for a chicken pen. you have at most 50 feet of fencing to form the fun. Find the possible length of each side of the chicken pen
The sum of the length around a square is known as the perimeter thus the possible length of each side of the chicken pen assuming it to be square is 12.5 feet.
What is the perimeter?Perimeter is the addition of an external measure of sides it will always positive.
A perimeter is a length and has a degree of the unit as one.
Perimeter of square = side + side + side + side
Let's assume the chicken pen to the square in order to find the length of each side.
Now since fencing is fitted around the sides so it will be the same as the perimeter of the square.
Perimeter of square = 4 × side
4 × side = 50
Side = 50/4 = 12.5 feet.
Hence "The sum of the length around a square is known as the perimeter thus the possible length of each side of the chicken pen assuming it to be square is 12.5 feet".
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What is the measure of angle 1 in the picture below?2135°O 90 degreesO 225 degreesO 45 degreesO 135 degrees
1 and 135 are corresponding angles.
Corresponding angles on parallel lines are equal
m<1= 135 degrees
If x=|9|what are the possible values of x?
Answer:
9
Step-by-step explanation:
the absolute value function always delivers only the positive value of anything inside the absolute function.
therefore, x is 9 and only 9.
I need help with this problem
Answer:
y = x-13
Step-by-step explanation:
So this question asks for two numbers. Let's call them x and y.
Since we know that x is larger than y, and the difference between them is 13, x must be greater than y by 13. So, x = y + 13
x = y + 13 isn't what the question is asking for though, so we have to isolate y to make one side contain only x and numbers. To do that, subtract both sides by 13 to get:
x - 13 = y
rearrange:
y = x - 13
True or false?
A supply shock is a sudden shortage of a good.
The following statement "A supply shock is a sudden shortage of a good" is true.
A supply shock is an unexpected incident that abruptly affects the supply of a product or commodity, resulting in an unanticipated change in price. Supply shocks can be negative, resulting in a fall in supply, or positive, resulting in an increase in supply.
Assuming that aggregate demand remains constant, a negative (or unfavorable) supply shock causes a product's price to rise, whereas a positive supply shock causes the price to fall.
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Solve. Richard Saltwood's car averages 270 miles on its 18-gallon tank of gas. If Richard runs out of gas and a mechanic comes to his rescue with 2 3/10 gallons of gas, determine how far his car can go. Round to the nearest mile.
ANSWER:
35 miles
STEP-BY-STEP EXPLANATION:
We can make a proportion, since we know the number of miles per 18 gallons, so for 2 3/10 gallons we can calculate the number of miles proportionally
[tex]\begin{gathered} 2\frac{3}{10}=\frac{23}{10} \\ \text{The proportion is} \\ \frac{270}{18}=\frac{x}{\frac{23}{10}}\rightarrow\frac{270}{18}=\frac{10x}{23} \end{gathered}[/tex]solving for x:
[tex]\begin{gathered} 18\cdot10x=270\cdot23 \\ 180x=6210 \\ x=\frac{6210}{180} \\ x=34.5\cong35 \end{gathered}[/tex]Therefore you can travel a total of 35 miles.
What is the volume of this container? 4 in.
4 in.
1 in.
4 in.
2 in.
64 in²
56 in³
56 in²
64 in³
An object's capacity is expressed in terms of volume.
The container's volume is 56 in3.
How to find the container's volume?The capacity of an object is expressed in terms of volume.
A cup's capacity is said to be 100 ml, for instance, if it can hold 100 ml of water in its brim.
The quantity of space a three-dimensional item takes up can also be referred to as volume.
The figure's volume is equal to Bh.
V = Bh
where
B is the base's region.
h is the figure's height.
h = 4 in
The area of the base B is
B = (4*4) - (1*2) = 14 in
V = 14*4 = 56 inch cube.
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Evaluate.
1045+(834−612)
Enter your answer as a mixed number in simplest form by filling in the boxes.
The value of the expression given as 1045 + (834 − 612) is 1267
How to evaluate the expression?The expression is given as
1045+(834−612)
Evaluate the brackets in the above expression
So, we have the following equation
1045 + (834 − 612) = 1045 + 222
Evaluate the sum in the above expression
So, we have the following equation
1045 + (834 − 612) = 1267
The above equation/expression cannot be solved further
So, we make our conclusion
Hence, the solution to the expression is 1045 + (834 − 612) = 1267
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A recipe requires 2 and 1 third cups of flower the chef needs to increase the recipe bya factor of 4 how many cups of flower does the chef need
The number of cups needed by the chef is 9 1/3 cups.
How to calculate the fraction?A fraction simply means a part of a whole number.
In this case, the recipe requires 2 and 1 third cups of flower the chef needs to increase the recipe by a factor of 4.
The cups needed will be:
= 2 1/3 × 4
= 7/3 × 4
= 28/3
= 9 1/3 cups.
This illustrates the concept of fractions.
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Write the slope-intercept form equation for a line that contains point (0, 5) and has a slope of 5/4
The slope-intercept form equation for a line that contains point (0, 5) and has a slope of 5/4 is y = (5/4)x + 5
In this question, we have been given a point (0, 5) and a slope 5/4
We need to write the slope-intercept form equation for a line that contains point (0, 5) and has a slope of 5/4
Using the formula for the point-slope form equation of a line:
(y - y1) = m(x - x1)
y - 5 = (5/4)(x - 0)
y - 5 = (5/4)x
y = (5/4)x + 5
which is slope-intercept form of line.
here slope = 5/4 and y-intercept = 5
Therefore, the slope-intercept form equation for a line that contains point (0, 5) and has a slope of 5/4 is y = (5/4)x + 5
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Find the value of X. If ur answer is not an integer
Answer: x = (5√2)/2
The last option
Explanation:
The given triangle is a right triangle. Taking angle 45 as the reference angle,
hypotenuse = 5
opposite side = x
We would find x by applying the sine trigonometric ratio which is expressed as
sin θ = opposite side/hypotenuse
By substituting the given values into the equation,
sin45 = x/5
Recall,
[tex]sin45\text{ = }\frac{\sqrt{2}}{2}[/tex]Thus,
[tex]\begin{gathered} \frac{\sqrt{2}}{2}\text{ = }\frac{x}{5} \\ By\text{ crossmultiplying,} \\ x\text{ = }\frac{5\sqrt{2}}{2} \end{gathered}[/tex]x = (5√2)/2
The last option
can anyone solve? 14 x 3 - 2 + 3
Answer:
43
Step-by-step explanation:
So, the key to solving this is PEMDAS, or parenthesis, exponents, multiplication/division from left to right, and addition/subtraction from left to right. So, you start off with 14x3, which is 42. So, you have 42-2+3. Next, you have to do 42-2, which is 40. Finally, you do 40+3, which is 43.
Answer:
43
Step-by-step explanation:
14 x 3 - 2 + 3
PEMDAS says multiply before adding or subtracting
42 - 2 + 3
Then subtract
40 +3
Then add
43
anwser? please i need this to pass my test and i dont understand
Based on the conversion rate between kilometers and miles, the data to complete the table is:
8 miles : 12.88 kilometers 0.93 miles : 1.5 kilometers 5.58 miles : 9 kilometers 3.1 miles : 4.991 kilometersHow to convert miles to kilometers?For every given mile, there will be 1.61 kilometers. To convert miles to kilometers therefore, you have to multiply the number of miles by the number of kilometers in a mile.
If given 8 miles, the number of kilometers is:
= 8 x 1.61
= 12.88 kilometers
If given 3.1 miles, the number of kilometers is:
= 3.1 x 1.61
= 4.991 kilometers
If given 1.5 kilometers, then the number in miles is:
= 1.5 x 0.62
= 0.93 miles
If given 9 kilometers, then the number in miles is:
= 9 x 0.62
= 5.58 miles
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How can you solve, write and graph inequalities on a number line?
Let's use the following inequation as an example:
[tex]2y>6[/tex]First let's simplify it dividing the inequation by 2:
[tex]y>3[/tex]Now, let's draw a number line, and include the point 3 in it:
We want the values of y that are greater than 3, that is, the numbers to the right of the number 3 in the number line. So we mark the area that corresponds to the values of y that satisfies the inequation:
The number 3 is not part of the answer, because 3 is not greater than 3, so we draw a small empty circle on the number 3. If the number 3 was part of the answer, the circle would be filled.
in the conditional statement “If the temperature of water is between the temperatures of ice and steam, then ice is colder than water and steam is hotter than water.” write the given statement and the to prove statement.
Ice is colder than water due to its more heat absorbing capacity then water and steam is hotter than water due to high heat transfer rate then water.
What is specific heat capacity ?
In scientific terms, a specific heat capacity is the quantity of heat (J) absorbed by a material every time its temperature goes up 1 K (or 1 °C), given in J/(kg K) or J/(kg °C) per unit mass. formulae for specific heat capacity is given by :
Q = mCΔT
Here the given statement is :
If the temperature of water is between the temperatures of ice and steam, then ice is colder than water and steam is hotter than water.
The above statement is justified below :
The steam exhibit more energy than water at the same temperature that is 100° C. The steam uses the latent heat of vaporization so as to get vaporized and water do not exhibit energy and also, The arrangement of molecules in substances is widely influenced by the state of the matter of the substance. In this way, in solids the molecules have a fix organization and are closely packed due to this, solids have both a defined shape and volume; in liquids the molecules are still close to each other but there is no a defined structure and therefore liquids have a defined volume but not a defined shape; finally, in gases molecules do not follow an orderly arrangement and there is more space between them which makes them not have a define volume or shape.
According to this, we can say that Ice is colder than water due to its more heat absorbing capacity then water and steam is hotter than water due to high heat transfer rate then water.
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d. Bottom: summary 5. Complete the Coached Example on page 285 - fill in the blanks Upload the Cornell Notetaking Guide and the Coached Example ACHED EXAMPLE number of text messages that Aimee sent on each of the past 7 days is shown 24, 19, 11, 15, 11, 28, 20 t are the first quartile, third quartile and interquartile range of this data set? the numbers from least to greatest. - IL 15 19. 20. 24.29 the median. The median is the 19 Median: _19 value of an ordered data set. 1 is the median of the half ofa data set
The first quartile (Q1) is defined as the middle number between the smallest number (minimum) and the median of the data set. The first quartile is the median of the first half of a data set.
First QuartileQ1 =11
The third quartile (Q3) is the middle value between the median and the highest value (maximum) of the data set. The third quartile is the median of the second half of a data set.
Third QuartileQ3 = 24
The interquartile range (IQR), is equal to the difference between 75th and 25th percentiles. IQR = Q3 − Q1
IQR = 13