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2 years ago

Y = 5x - 7; y = -22solve for xx=?

Mathematics

2 answers:

givi [52]2 years ago

4 0

Answer:

x = -3

Step-by-step explanation:

If not, let me know. If so, brainliest??

EastWind [94]2 years ago

4 0

Answer:

x = - 3

Step-by-step explanation:

Substitute -22 for y in y=5x-7

Add -5x to both sides

Add 22 to both sides

Divide both sides by -5

x= -3 y= -22

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What is the equation of the circle whose diameter has endpoints (8,-2) and (-2,6)?

klemol [59]

Answer:

$(x-3)^{2} +(y-2)^{2}=41$

Step-by-step explanation:

step 1

Find the diameter of the circle

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

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

we have

$A(8,-2)\\E(-2,6)$

substitute the values

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

$d=\sqrt{(8)^{2}+(-10)^{2}}$

$d=\sqrt{164}\ units$

$d=2\sqrt{41}\ units$

step 2

Find the center of the circle

The center is the midpoint of the diameter

The center is equal to

$C=(\frac{8-2}{2},\frac{-2+6}{2})$

$C=(3,2)$

step 3

Find the equation of the circle

The equation of the circle in center radius form is equal to

$(x-h)^{2} +(y-k)^{2}=r^{2}$

we have

(h,k)=(3,2)

$r=2\sqrt{41}/2=\sqrt{41}\ units$ ---> the radius is half the diameter

substitute

$(x-3)^{2} +(y-2)^{2}=(\sqrt{41})^{2}$

$(x-3)^{2} +(y-2)^{2}=41$

4 0

3 years ago

In a science experiment, Shelly has to weigh a compound in grams. The balance in her school measures in milligrams (mg). Shelly

exis [7]

Answer:

8.45 grams

Step-by-step explanation:

In a science experiment, Shelly has to weigh a compound in grams. The balance in her school measures in milligrams (mg). Shelly finds that the weight of the compound is 8,450 mg. What is the value in grams (g) that Shelly should enter?

1 mg = 0.001 g

8450 mg = x

Cross Multiply

= 8450 × 0.001 g

= 8.45 g

Therefore, Shelly should enter 8.45 grams

7 0

3 years ago

*ANSWER CORRECTLY FOR MARK AS BRAINILISTE*

kkurt [141]

Answer: The Mean absolute deviation is 5. The mean is 10.

2 is 8 away from the mean.

5 is 5 away from the mean.

9 is 1 away from the mean.

10 is 0 away from the mean.

17 is 7 away from the mean.

19 is 9 away from the mean

Step-by-step explanation:

Hope this helps!

pls mark brainliest :)

5 0

3 years ago

What is the answer ?

Rainbow [258]

Answer:

Step-by-step explanation:

6 0

3 years ago

Find the perimeter of triangle abc with coordinates (6,6) (2,2) (7,-3)

ad-work [718]

Tell me if the answer is correct and give brainliest heheheh tq :p

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3 years ago

Y = 5x - 7; y = -22solve for xx=?​

Y = 5x - 7; y = -22solve for xx=?