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Sloan [31]
2 years ago
13

URGENT HELP (picture says everything you need to know)

Mathematics
1 answer:
seropon [69]2 years ago
8 0

Answer:

I believe the quiz had 18 questions, with a 14:4 ratio

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Angelina_Jolie [31]
9 miles every week + 15 miles every weekend = 24 miles every 7 days =
24/7 = 3 3/7 miles per day
6 0
3 years ago
The double number lines show the ratio of cups to gallons
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I thin there are in 48 in 3 gallons
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3 years ago
Write the equation in standard form. Identity the center and radius.<br> x² + y2 + 8x-4y-7=0
lorasvet [3.4K]

Answer:

equation;

(x + 4) {}^{2}  + (y - 2) {}^{2}  = 27

Center (-4,2)

Radius is

3 \sqrt{3}

Step-by-step explanation:

Since the x^2 and y^2 have the same coeffiecent this will be a circle in a form of

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

Where (h,k) is center

r is the radius

So first we group like Terms together

{x}^{2}  + 8x  +  {y}^{2}  - 4y - 7 = 0

Add 7 to both sides

{x}^{2}  + 8x +  {y}^{2}  - 4y = 7

( {x}^{2}  + 8x) +(  {y}^{2}  - 4y) = 7

Since the orginal form of the equation of the circle has a perfect square we need to complete the square for each problem

(\frac{8}{2} ) {}^{2}  = 16

and

( - \frac{4}{2} ) {}^{2}  = 4

so we have

{x}^{2}  + 8x + 16 +  {y}^{2}  - 4y + 4y = 7 + 16 + 4

{x}^{2}  + 8x + 16  +  {y}^{2}  - 4y + 4y = 27

(x + 4) {}^{2}  +  (y  - 2) {}^{2}  = 27

To find our center, h is -4 and k is 2

so the center is (-4,2)

The radius is

\sqrt{27}  = 3 \sqrt{3}

So the radius is 3 times sqr root of 3.

8 0
2 years ago
Equivalent ratio for 5:9
vfiekz [6]
10:18 is an equivalent ratio.
5 0
3 years ago
How should i solve this using an algebraic equation
artcher [175]
House price = down payment + mortgage x number of months

430,000 = 250,000 + 2,000x where x is number of months

To find number or months solve for x
430,000 = 250,000 + 2,000x

Subtract 250,000
180,000 = 2,000x

Divide by 2,000
x = 90 months

12 months in one year
90 = 84 + 6 = 12 x 7 + 6

7 years and 6 months
6 0
2 years ago
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