3 years ago

PLEASE HELP ME BEFORE I FAILLLLLL!!!!!!

Mathematics

1 answer:

Zepler [3.9K]3 years ago

4 0

What’s the a= and d=

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51 less than the 8 times an unknown number is equal to 53.

Anton [14]

Let, Unknown number = x

8x-51 = 53

8x = 53+51

x = 104/8

x = 13

8 0

4 years ago

What is the radius of a circle whose equation is x2 + y2 + 8x – 6y + 21 = 0?

s344n2d4d5 [400]

Answer:

2 units

Step-by-step explanation:

The given equation of the circle is:

$x^{2} + y^{2}+8x-6y+21=0$

The general equation of the circle is:

$x^{2} + y^{2}+2gx+2fy+c=0$

Comparing the given equation with the general equation we can say:

g = 4

f = -3

c = 21

The formula for radius of the circle is:

$radius=\sqrt{g^{2} +f^{2} -c }$

Using these values of the given circle, we get:

$radius=\sqrt{(4)^{2}+(-3)^{2}-21}\\\\radius=\sqrt{4}\\\\radius=2$

Therefore, the length of radius of the given circle is 2.

3 0

3 years ago

Use 3.14 for r. Round your answers to

galben [10]

Answer:

I think its A........ I don't really know.

Step-by-step explanation:

5 x 2 = 10

3.14 x 10 = 31.4

3 0

3 years ago

suppose you win a contest at the start of 9th grade that deposited $3000 in an account that pays 5% annual interest compound con

tiny-mole [99]

A=pe^rt
A=3,000×e^(0.05×8)
A=4,475.47

5 0

3 years ago

35y + 14y =<br> please i need help with this asap.

dimaraw [331]

Answer: 35y + 14y = 49y

Step-by-step explanation:

3 0

3 years ago

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