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3 years ago

Solve by system of equations: 2x+5y=-11 -8x-5y=-1 answer like this: ( _,_ )

Mathematics

1 answer:

Eddi Din [679]3 years ago

6 0

Answer:X(2,-3)Y

Step-by-step explanation:

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A population, P(t) (in millions) in year t, increases exponentially. Suppose P(9)=16 and P(18)=24. a) Find a formula for the pop

jenyasd209 [6]

Answer: $\frac{32}{3}\left ( 1.0460\right )^t$

Step-by-step explanation:

Given

Population changes exponentially

$P\left ( t\right )=ab^t$

$P\left ( 9\right )=16$ ------1

$P\left ( 9\right )=16=ab^8$

$P\left ( 18\right =24=ab^{18}$ -----2

divide 1 & 2 we get

$\frac{24}{16}=\frac{b^{18}}{b^9}$

$\frac{3}{2}=b^9$

Substitute $b^9$ in 1 we get

$a=\frac{32}{3}$

Thus $P\left ( t\right )=\frac{32}{3}\left ( 1.0460\right )^t$

8 0

3 years ago

Read 2 more answers

Clyde bought a steak that weighs 1.4 pounds. The price is $4.50 per pound. how

andriy [413]

six dollars and 30 cents

6 0

2 years ago

Reflection across the y-axis B(1,3), H(4,4), D(4,-1)

shtirl [24]

B wpuld be (-1,3), H would be (-4,4), and D would be (-4,-1). Hope this helps and please give Brainliest!

3 0

2 years ago

√x<4 A.20 B.12 C.2 D.-1 E.5. F. No solution

evablogger [386]

We know that for √x to be meaningful, we must have x ≥ 0.

If we square both sides of the inequality, we have
x < 4²
x < 16

Thus the whole solution is
0 ≤ x < 16

The following choices are valid solutions to the inequality:
B. 12
C. 2
E. 5

5 0

3 years ago

Mila reads at a rate of 3 paragraphs per minute.

Alexxx [7]

Answer:

y= 3x

Step-by-step explanation:

This is honestly your basic times tables if we are being honest. We know that she read 3 paragraphs per minute. We also know that in 4 minutes, she read 12 paragraphs. 4 times 3 = 12. So the answer is y=3x.

7 0

2 years ago