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3 years ago

What two numbers add to 92 and multiply to 160?

Mathematics

1 answer:

KatRina [158]3 years ago

3 0

None But, 80 x 2 = 160 and 80 + 2 = 82, are you sure you mean 92?

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14. The table shows the survey results of exercises

Akimi4 [234]

Answer:

Answers in the question are A, B, and E.

The answers to the table are:

yes no total

yes: 12 25 37

no: 12 6 18

total: 24 31 55

Hopefully this helped, sorry if I was too late :)

3 0

3 years ago

A line passes through the points (-1, -1)

Allisa [31]

Given:

A line passes through the points (-1, -1) and (5,8).

To find:

Which points lie on the same line?

Solution:

If a line passes through two points, then the equation of the line is:

$y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)$

A line passes through the points (-1, -1) and (5,8). So, the equation of the line is:

$y-(-1)=\dfrac{8-(-1)}{5-(-1)}(x-(-1))$

$y+1=\dfrac{8+1}{5+1}(x+1)$

$y+1=\dfrac{9}{6}(x+1)$

$y+1=\dfrac{3}{2}(x+1)$

Multiply both sides by 2.

$2(y+1)=3(x+1)$

$2y+2=3x+3$

$2y=3x+3-2$

$y=\dfrac{3}{2}x+\dfrac{1}{2}$

So, the equation of the line is $y=\dfrac{3}{2}x+\dfrac{1}{2}$ .

Now, check each point for this equation.

Putting $x=-3$ , we get

$y=\dfrac{3}{2}(-3)+\dfrac{1}{2}$

$y=\dfrac{-9+1}{2}$

$y=\dfrac{-8}{2}$

$y=-4$

Similarly,

For $x=9,y=15$ .

For $x=1,y=2$ .

For $x=4,y=6.5$ .

For $x=3,y=5$ .

For $x=-2,y=-2.5$ .

Therefore, the points (-3,-4), (9,14), (1,2) and (3,5) lie on the same line but the points (4,7) and (-2,-2) are not on that line.

6 0

3 years ago

Evaluate each expression when a = -4 and b = 3<br><br>1.) ab<br>2.) 2a + 3b <br>2.) 2(a - b)

Svet_ta [14]

1) -12

ab is a times b. We plug in the numbers (-4)*(3) which equals -12.

2) 1

We plug in -4 for a, and 3 for b into the equation.

We get 2(-4) + 3(3)

2*-4 is -8. 3*3 is 9. We add them both, and -8+9 equals 1.

3) -14

We plug in -4 for a, and 3 for b into the equation.

2(-4-3)

-4-3 is -7. -7*2 equals -14.

3 0

3 years ago

If a couple went out to dinner with there four children and the kids meals cost $11.99 each and the adults meal cost 15.99 each

Basile [38]

2×$15.99=31.98
+ 4×$11.99=47.96
---------------
$79.94

:. $79.94 is the cost.

5 0

3 years ago

To find mileage, or how many miles a car can travel per gallon of gasoline, you can use the expression m/g, where m is the dista

White raven [17]

I think the answer is 26.5 mpg. I divided 212 by 8 and got 26.5 as my answer.

5 0

3 years ago