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olya-2409 [2.1K]

3 years ago

8

4 pairs of shoes cost $80. What is the cost of 7 pairs of shoes ?

2 answers:

Karolina [17]3 years ago

5 0

80/4=20
20x7=140
7 shoes = 140

harina [27]3 years ago

4 0

Answer:

140

Step-by-step explanation:

If 4 pair cost $80 then if you divide $80 into 4 groups you get $20. Multiply $20 times 7 pairs of shoes and you get $140.

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Hey what's the answer ?<br><img src="https://tex.z-dn.net/?f=%28%20%7By%7D%5E%7B2%7D%20%20%2B%20%20%5Cfrac%7B5%7D%7B7%7D%20%29%2

3241004551 [841]

Answer: $y^4$ + $\frac{-73}{35}y^2$ - $2$

Step-by-step explanation:

Use FOIL:

$y^4$ + $\frac{-14}{5}y^2$ + $\frac{5}{7}y^2$ + $\frac{-70}{35}$

Make $\frac{-14}{5}y^2$ and $\frac{5}{7}y^2$ have the same numerator:

$\frac{-14*7}{5*7}y^2 =\frac{-98}{35}y^2$

$\frac{5*5}{7*5} y^2=\frac{25}{35} y^2$

Then add like terms and simplify:

$y^4$ + $\frac{-98}{35}y^2$ + $\frac{25}{35} y^2$ + $\frac{-70}{35}$

$y^4$ + $\frac{-73}{35}y^2$ - $2$

7 0

3 years ago

Read 2 more answers

9. The equation y = x2 - 1 is

SashulF [63]

It depends on whether or not you have written the question correctly. If the 2 is an exponent, it needs to be preceded by a ^. Otherwise, it is considered a multiplier.
x^2 = x²
x2 = x⋅2

y = x²-1 is nonlinear and nonproportional.

3 0

3 years ago

Please help answer A and B

Goshia [24]

Answer:

the answer is A

Step-by-step explanation:

4 0

2 years ago

Which type of transformation to the triangle has occurred from graph 1 to graph 2 in this diagram

mel-nik [20]

Answer:

B. Rotation

Step-by-step explanation:

5 0

3 years ago

The length of a rectangle is 3 cm less than its width what are the dimensions of the rectangle if its area is 270 cm²

kupik [55]

Given:

The length of a rectangle is 3 cm less than its width.

The area of the rectangle is 270 cm².

To find:

The dimensions of the rectangle.

Solution:

Let x be the width of the rectangle. Then,

$\text{Length}=x-3$

Area of a rectangle is:

$\text{Area}=\text{Length}\times \text{width}$

$270=(x-3)(x)$

$270=x^2-3x$

$0=x^2-3x-270$

Splitting the middle term, we get

$x^2-18x+15x-270=0$

$x(x-18)+15(x-18)=0$

$(x-18)(x+15)=0$

$x=18,-15$

Width of the rectangle cannot be negative. So, the only value of x is 18.

$Width=18$

$Length=18-3$

$Length=15$

Therefore, the length of the rectangle is 15 cm and the width of the rectangle is 18 cm.

7 0

3 years ago