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3 years ago

Help please. This is a math test! Pictures down below

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

8 0

Answer:All of the ones are below one

Step-by-step explanation:

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A culture started with 3000 bacteria. After 4 hours, it grew to 3,600 bacteria. Predict how many bacteria will be present after

Vlad [161]

Hello Shannonrodrigue. You can solve this by setting up an exponential growth equation.

$A = A_ob^t$
$3600 = 3000b^4$

Now we solve for b
$3600 = 3000b^4$
$\frac{3600}{3000} = \frac{3000b^{4}}{3000}$
$\frac{6}{5} = b^4$
$\sqrt[4]{\frac{6}{5}} = \sqrt[4]{b^4}$
$\sqrt[4]{\frac{6}{5}} = b$

Now that we have found b, we can use the equation $A = 3000b^t$ to predict how many bacteria will be present after 10 hours.
$b = \sqrt[4]{\frac{6}{5}}$
t = 10
$A = 3000b^t$
$A = 3000\sqrt[4]{\frac{6}{5}}^{10} = 4732.3228 = 4732$

Answer = 4732

4 0

3 years ago

What is the quotient of 7035/15 pls answer this fast

alexgriva [62]

<span>What is the quotient of 7035/15

469 is equivalent to 7035/15

because 7035/15=469</span>

3 0

3 years ago

Help with my math homework please !!

Temka [501]

Answer:

Ok Ill do it in comments

Step-by-step explanation:

7 0

3 years ago

What is the sum of this infinite geometric series

nordsb [41]

You probably know that for $|r|$ , we have

$\displaystyle\sum_{i=0}^\infty ar^i=\dfrac a{1-r}$

Your sum starts at $i=1$ , so it's equivalent to

$\displaystyle\sum_{i=1}^\infty 12\left(\dfrac12\right)^i=\sum_{i=0}^\infty 12\left(\dfrac12\right)^i-12\left(\dfrac12\right)^0=\dfrac{12}{1-\frac12}-12=12$

so the answer is A.

4 0

3 years ago

The vertex angle of an isoceles triangle is 8 times the measure of the base angle. find the measure of the base angle

Yuki888 [10]

For this problem, if we used b to represent your base angle measurement, you would add 8b+2b and set it equal to 180. This is because the measure of the vertex angle is 8 times the base angle measurement, so we had to multiply b by 8. We also had to add it to the other angle measures, so the other angle measures are represented as 2b since they are the same length. We then have to set this equal to 180 since that measures of a triangle must add up to 180. Then we combine like terms on our “b” side to get 10b=180. Then we divide both sides by 10 and we get b=18, which is the measure of our base angle.

4 0

3 years ago