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3 years ago

If BC = 2x, CD = 7x, and BD = 9, what is CD?

Mathematics

1 answer:

Paha777 [63]3 years ago

8 0

Answer: 18

Step-by-step explanation:

2(9)=18

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Papessa [141]

Answer:

I'm pretty sure its 4

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3 years ago

Common core question please help!!!

Maru [420]

She has 648 shirts.

Work:
Lisa has 42 pineapples. 4 + 2 = 6
Johnny has 6 marbles.
42 + 4 + 2 + 6 = 54
54 + 5 + 4 = 63
63 + 6 + 3 = 72
But 72 is a multiple of 6!
Let's go further:
72 * 6 = 432

Now let's look at the word 'shirt'.
The middle letter is I.
I is the 9th letter of the alphabet.
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3 years ago

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

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3 years ago

Please someone help me out asap! Need this done

Ksju [112]

Answer:

3^6

Step-by-step explanation:

3^8 * 3^-2

3^(8-2)

3^6

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3 years ago

DUE IN 20 MINS !!!!!!!!!!!!!!!

Vitek1552 [10]

Answer:

Random, because he surveyed 30 <em>random</em> shoppers

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2 years ago

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