2 questions in one! please help! will give brainiest if work is shown!!

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

8 0

The first answer is 0.38(x^2)-2.45x+5.1. first, on a graphing calculator, you enter the data in the chart into stat edit. then you turn on stat plot 1 and press graph. press stat calc quadreg to find the equation. then, substitute 9 in for x to find that there will be 13.83 thousand bacteria after 9 hours

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15Points!!<br> Factor completely.<br><br><br> 12x² +28x

Zigmanuir [339]

Answer:

4x(3x+7)

Step-by-step explanation:

$12x^2+28x\\12xx+28x\\\\4\cdot \:3xx+4\cdot \:7x\\4x\left(3x+7\right)$

4 0

3 years ago

2x + 3 + x2; for x = 4

Irina-Kira [14]

Answer:

Pretty sure it's 27

Step-by-step explanation:

(2 4= 8) + 3 (4 4= 16)=27

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3 years ago

Read 2 more answers

Explain how your know that 88is a solution to the equation 1/8 R = 11 complete the sentences

Eddi Din [679]

Answer:

In this equation R would equal 88 because it satisfies the equation.

Step-by-step explanation:

You must solve for R by isolating the variable(which is R). To move the 1/8, multiply both sides by 8. You would do this because 8 is the reciprocal of 1/8. With R on it's own, to keep both sides equal multiply 11*8. That equals 88, which satisfies the equation, which is why 88 is the solution.

Hope this helps :)

8 0

3 years ago

I need help with 14, 15 and 16 plz

Natalka [10]

14. Is 25 percent
15. 20 percent
16.

5 0

3 years ago

Plz help will mark brainlest

mart [117]

He will do about 16 rotations

6 0

3 years ago