An unknown number b is 10 more than an unknown number k. The number b is also k less than 8. The equations to find k and b are shown below:b = k + 10
b = −k + 8

Which is a correct step to find k and b?
Write the points where the graphs of the equations intersect the x-axis. Write the points where the graphs of the equations intersect the y-axis. Add the equations to eliminate k. Multiply the equations to eliminate b.

Answers

Answer 1
Answer:

Answer:

Add the equations to eliminate k.

Step-by-step explanation:

When we add the equations we get

2b =18

\boxed{b=9}

next we put b=9 into b=k+10 and solve for k:

9=k+10\n\n\boxed{k=-1}

this way we have found k and b; therefore, adding the equations to eliminate k is a correct step for finding k and b.

Let us now look at other choices we were given.

Write the points where the graphs of the equations intersect the x axis.

These points may be the solutions to each equation, but they are not the solutions to the system of these two equations.

Write the points where the graphs of the equations intersect the y axis.

Same thing goes here: these points may be the solutions to each equation, but they are not the solutions to the system of these two equations.

Multiply the equations to eliminate b.

Multiplying the equations doesn't eliminate b, but rather it complicates the matter by producing a quadratic equation—we don't want to go down that road!


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3 divided into 99 equals what
Cj ran 6 miles in 48 minutes what was his rate in miles per hour
A rectangle has an area of 30 square meters and a perimeter of 34 meters. What are the dimensions of the rectangle?

Find the equation of the line

Answers

Answer:

y=2/3x+4

Step-by-step explanation:

Use rise over run to find slope, then find where the line touches the y-axis to find the y-intercept

The cost of a ticket to the circus is $19.00 forchildren and $42.00 for adults. On a certain day,
attendance at the circus was 1,700 and the total
gate revenue was $55,300. How many children and
how many adults bought tickets?​

Answers

Answer:

The number of tickets bought is 1000 adults tickets and 700 children were present  

Explanation:

Let the number of children and adults present in the circus be x and y respectively

According to question,

Then, x + y = 1700  ……………..equation (1)

And, cost of ticket to circus for children and adult be 19, 42 respectively

Totalcost of ticket;

for adults = 42y; for children = 19x

19x + 42y = 55300  …………………equation (2)

Multiplying equation (1) by 19

19x + 19y = 32300  ……………… eqn (3)

Subtracting equation 1 and 3, we get

23y = 23000

y = 1000

putting this value in eq (1), we get x = 700

Therefore, 1000 adults and 700 children were present.

The length of a rectangle is the width minus 8 units. The area of the rectangle is 9 units. What is the length, in units, of the rectangle?

Answers

Final answer:

The length of the rectangle is 1 unit.

Explanation:

To find the length of the rectangle, we need to solve for the width first. We are given that the length of the rectangle is the width minus 8 units. Let's assume the width is 'w'. So the length would be 'w-8'. The area of the rectangle is given as 9 units. We can write the equation: (w-8) * w = 9. Solving this equation, we get w^2 - 8w - 9 = 0. Factoring or using the quadratic formula, we find that the width is approximately -1 or 9. Since the width cannot be negative, we discard -1 and conclude that the width is 9 units. Now, we can substitute this value back into the length equation to find the length: length = width - 8 = 9 - 8 = 1 unit.

Learn more about Rectangle Length here:

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Please help, again. Mathmatics

Answers

ok for the fist one the two fractions divide them. but the one that is 9 and 1/3 you multiply 9*1 then divide it by 3. and for the last one just put any of the answers in i'll have the answers for you in a bit.

Can someone plz help me with this division problem D:

Answers

Answer:top box will be 86

2nd box will be 192

3rd box will be 144

Step-by-step explanation:

24x8= 192 subtract that to 206 , equals to 14, bring down the 4 makes to 144

24x6= 144 subtract that by 144 ,equals to 0


24 goes into 206 3 times with 14 leftover bring down your 4. 24 goes into 144 6 times. so your answer is 36

What is the area of the polygon below A. 140 square units
B. 170 square units
C. 115 square units
D. 225 square units

Answers

The area of the polygon is,

⇒ 140 units²

What is mean by Rectangle?

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

Given that;

A polygon is shown in figure.

Now, We get;

The polygon is made by two rectangles.

Hence, The area of the polygon is,

⇒ 17 x 5 + 11 x 5

⇒ 85 + 55

⇒ 140 units²

Thus, The area of the polygon is,

⇒ 140 units²

Learn more about the rectangle visit:

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Look at the picture.
Area of a larger rectangle
A_1=10\cdot17=170\ u^2

Area of a smaller rectangle
A_2=5\cdot6=30\ u^2

Area of the polygon
A=A_1-A_2\n\nA=170-30=140\ u^2
Answer: A. 140 square units