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3 years ago

8

Ben bought 4 pairs of jeans and a T-shirt that cost $8 .He had a coupon for $3 off the prices of jeans spent a total of $92 befo

re tax. A. Define a variable and write an equation to represent the situation. B. What was the price of each pair of jeans?

1 answer:

Artist 52 [7]3 years ago

8 0

each pair of jeans was 20.25 dollars sorry if i'm wrong

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Which table represents a direct variation function?

Luda [366]

Direct variation is y=kx where k is a constant

the fiest way to see if it is direct or not, is if x increases, then y increases as well,
then we see if y=kx is valid, basically if we have a constant of variation

the first one x increase and y increase
see if same constant
y=kx
-4.5=-3k
1.5=k
so

see next one
-1 and 3
-3=-1(k)
-3=-1(1.5)
-3=-1.5
false
not it

2nd is increase and y decrease, so not direct variation

3rd is x is same but y increase so nope

4th is x increase and y increase, now test the constant
-7.5=-3k
2.5=k

-1 and -2.5
-2.5=-1k
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-2.5=-2.5
true

answer is last option

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3 years ago

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Given the lease terms below, what is the total price of this car if you buy it

Deffense [45]

Answer:

Step-by-step explanation

APEX 28,272

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2 years ago

Are these two answers correct??

Damm [24]

Answer:

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Step-by-step explanation:

7 0

2 years ago

A circle with the equation (x + 6)2 + (y + 3)2 = 16 is reflected over the line x = 2.

fomenos

Answer: $(x-10)^{2}+(y+3)^{2}=16$

Step-by-step explanation:

We know the center of the original circle is (-6, -3). After reflecting this over the line x=2, the new center is now (10, -3).

Thus, the equation of the circle is $(x-10)^{2}+(y+3)^{2}=16$ .

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1 year ago

The area of a circle is 43.25cm2.<br> Find the length of the radius rounded to 2 DP.

Monica [59]

Answer:

3.71 cm

Step-by-step explanation:

Hi there!

Area of a circle equation: $A=\pi r^2$ where r is the radius

Plug in the area 43.25 cm²

$43.25=\pi r^2$

Divide both sides by π to isolate r²

$\frac{43.25}{\pi} =\frac{\pi r^2}{\pi} \\\frac{43.25}{\pi}=r^2$

Take the square root of both sides to isolate r

$\sqrt{\frac{43.25}{\pi}} =r\\3.71=r$

Therefore, the length of the radius rounded to 2 decimal points is 3.71 cm.

I hope this helps!

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2 years ago