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3 years ago

A box of 6 matchbox cars costs $11.94. A box of 4 matchbox cars costs $8.12. Which box has the lowest cost PER car?

1 answer:

8 0

11.94 divided by 6 equals 1.99 so that would be $1.99. 8.12 divided by 4 equals 2.03 so that would be $2.03. So the box that has the lowest would be the box of 6 matches

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A cube has a side length of 13 millimeters.What is the surface area of the cube?

wel

Surface area of a cube is n^2, n being the measurment of any one side of the cube. In this case, 13x13=169, so the answer is 169 mL^2.

8 0

2 years ago

Find the geometric mean of the pair of numbers. Give your answer in simplest radical form.

NARA [144]

9514 1404 393

Answer:

10√5

Step-by-step explanation:

The geometric mean of two numbers is the square root of their product.

m = √(20×25) = √500 = √100 × √5

m = 10√5

The geometric mean of 20 and 25 is 10√5.

6 0

2 years ago

Which of the following rules could represent the function shown in the table?

kvasek [131]

ANSWER

The rule is given by the relation,

$y = 2x + 1$

EXPLANATION

We need to check and see if there is a constant difference between the y-values.

$1 - - 1 = 2 = 3 - 1$

We can see that, there is a constant difference of 2.

This means that the table represents a linear relationship.

Let the rule be of the form,
$y = mx + c$

Then the points in the table should satisfy the above rule.

So let us plug in

$(0,1)$

This implies that,

$1 =m (0) + c$

$1 = 0 + c$

$c = 1$

Our rule now becomes,

$y = mx + 1 - - (1)$

We again plug in another point say, (-1,-1) in to equation (1) to get,

$- 1 = m( - 1) + 1$

we solve for m now to obtain,

$- m=-1-1$

$- m = - 2$

$m = 2$
We now substitute back in to equation (1) to get

$y = 2x + 1$

5 0

2 years ago

Read 2 more answers

What is the slope intercept form of this table?

katrin [286]

Answer:

C. y = 600x + 2200

Step-by-step explanation:

2800-2200 = 600 = slope

2200 (y value) has the x value 0, so 2200 is the y-inercept

hope this helps :)

4 0

3 years ago

Alba worked for 6 hr 45 min at $7.90 per hour. What numbers could she use to estimate how much money she earned? Estimate the am

Svetradugi [14.3K]

Answer:

$52
this estimate is a little low

Explanation:

a) I might choose 6 1/2 hours and $8 per hour, so the estimated earnings would be ...

6(8) +(1/2)(8) = 52 dollars . . . . estimated earnings

These values are purposely chosen so that one is a little high and the other is a little low, hopefully producing a closer estimate than if both numbers were high (as 7 hours, $8, for example).

b) Using 800 instead of 790 means the pay estimate is about 1/80 = 1.25% high.

Using 6 1/2 instead of 6 3/4 means the hours estimate is about 1/27 ≈ 3.7% low.

So, we expect the product of these values to be slightly low, perhaps by about 2.5%.

_____

<em>Comment on estimating</em>

If you can estimate the error in the estimate with some reasonable accuracy, you can use that to adjust the estimate to a pretty close value.

8 0

3 years ago