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Natalija [7]
3 years ago
9

The subject of the formula below is y.

Mathematics
2 answers:
Hoochie [10]3 years ago
7 0

Step-by-step explanation:

We're basically trying to rearrange the equation to make everything equal x instead of y.

The biggest thing to note here is that x has to be positive. In order to make x positive, we need to switch the signs of everything in the equation.

So it'll go a little something like this:

y = x - 8

y - x = -8

-x = -y - 8

x = y + 8

Answer:

x = y + 8

Anna007 [38]3 years ago
4 0

Answer:

x = y + 8

Step-by-step explanation:

Given

y = x - 8 ( add 8 to both sides )

y + 8 = x

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Jacob is a plumber. Due to increased material costs, he puts all his prices up by 7%. He now chargers R320 per hour for her serv
Lorico [155]

Answer:

R290.1

Step-by-step explanation:

Let

x = charge before he put his prices up

New charge = R320

Percentage increase in price = 7%

x + 7% of x = 320

x + 0.07 * x = 320

x + 0.07x = 320

1.07x = 320

x = 320/1.07

x = 299.06542056074

Approximately

x = R290.1

Charge before he put his prices up = R290.1

4 0
2 years ago
Which equation with exponential expression are true?
Mnenie [13.5K]

Answer:B and E

It is B and E because it’s exponent matches the equation. In B, there are 2 fives and the exponential form shows 5 to the power of 2. In E, there are 6 sevens and the exponential form shows 7 to the power of 6.

7 0
3 years ago
Explain how to solve linear equations.
muminat

Answer:

that means you need to find the surface area, but not the part that is touching the ground or the bottom.

3 0
3 years ago
Liza's cat had six kittens. When Liza and her brother weigh all the kittens together, they weigh 4 pounds and 2 ounces. Since al
amid [387]
They would each be about 0.6875 pounds or 11 ounces.
7 0
3 years ago
Read 2 more answers
[calculus] the distance from the point (6, -4) to the circle <img src="https://tex.z-dn.net/?f=x%5E2%2By%5E2-8y%3D0" id="TexForm
stealth61 [152]

Answer:

Option C.

The distance from the point to the circle is 6 units

Step-by-step explanation:

we know that

The distance between the circle and the point will be the difference of the distance of the point from the center of circle  and the radius of the circle

step 1

Find the center and radius of the circle

we have

x^{2} +y^{2}-8y=0

Convert to radius center form

Complete the square

x^{2} +(y^{2}-8y+16)=0+16

Rewrite as perfect squares

x^{2} +(y-4)^{2}=16

so

The center is the point (0,4)

The radius is

r^{2}=16\\r=4\ units

step 2

Find the distance of the point from the center of circle

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

we have

(6,-4) and (0,4)

substitute the values

d=\sqrt{(4+4)^{2}+(0-6)^{2}}

d=\sqrt{(8)^{2}+(-6)^{2}}

d=\sqrt{100}\ units

d=10\ units

step 3

Find the difference of the distance of the point from the center of circle  and the radius of the circle

10\ units-4\ units=6\ units

therefore

The distance from the point to the circle is 6 units

see the attached figure to better understand the problem

3 0
3 years ago
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