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3 years ago

Complete the steps in solving the quadratic function 7x – 9 = 7x2 – 49x by completing the square. Fill in the blanks.

Mathematics

2 answers:

katovenus [111]3 years ago

8 0

Top one is 56

-9 + 112 = 7(x2 - 8x + 16 )

PolarNik [594]3 years ago

8 0

Answer:

1 is -56 2 is 112 3 is 16

Step-by-step explanation:

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Circle O has a circumference of 88π cm.

Lena [83]

Answer

Step-by-step explanation:

R = C/(2*Pi).

So, in order to find the radius from the circumference, you use the formula R = C/(2*Pi). In other words, just divide the circumference by 2 times pi.

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

In the triangle below, the value of a is 12.6. True False

aev [14]

Answer:

True

Step-by-step explanation:

Formula

Tan(x) = opposite / adjacent

Givens

x = 42

adjacent = 14

opposite = ?

Solution

Tan(42) = opp/14 Find tan(42)

Tan(42) = 0.900404

0.900404 = opp/ 14 Multiply both sides by 14

14 * 0.900404 = opp/14 * 14 Simplify the left

12.6 rounded = opp

a = 12.6

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3 years ago

What are the solutions to the quadratic equation (5y +6) 2= 24?

boyakko [2]

Answer:

$y=-2.18,-0.22$

Step-by-step explanation:

We have been given the equation

$(5y+6)^2=24$

Take square root both sides. When ever we take square root, we include plus minus sign

$\sqrt{(5y+6)^2}=\pm\sqrt{24}\\\\5y+6=\pm2\sqrt6$

Now, subtract 6 to both sides of the equation

$5y=-6\pm2\sqrt6$

Divide both sides by 5

$y=\frac{1}{5}(-6\pm2\sqrt6)$

$y=\frac{1}{5}(-6+2\sqrt6),y=\frac{1}{5}(-6-2\sqrt6)$

In decimal we have

$y=-2.18,-0.22$

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3 years ago

For the line 2x+ 3y=6, the x-intercept is ____ and the y-intercept is ____.

Reptile [31]

Answer:

2 and 3

Step-by-step explanation:

the x-intercept is 2

the y-intercept is 3

8 0

2 years ago