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4 years ago

Need help asap :) they said the text was too short so don't mind this

Mathematics

2 answers:

Elis [28]4 years ago

5 0

Answer:

try 63

Step-by-step explanation:

14×9=126

126÷2=63

Katyanochek1 [597]4 years ago

4 0

Answer: area of 63

Step-by-step explanation: the formula is Area = height * base/2

so now substitute Area = 9 * 14/ 2

multiply... Area = 126/ 2

then divide to get 63

hope this helps mark me brainliest if it did

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Keith won a cash prize in an art competition. He gave his mother 2/5 of the money he won. Of the remainder, 1/4 was given to his

USPshnik [31]

Answer:

300 dollars

Step-by-step explanation:

Let the original amount = x

x - 2/5x was what his mother's share looked.

5/5 x - 2/5 x

3/5x is what is left.

3/5 x - 1/4 * 3/5 x - 2/3x * 3/5 = his sister's share and his brothers

3/5x - 1/4*3/5 x - 2/3 * 3/5 = 15

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3/5 x 5/60 = 15

15 / 300 * x = 15

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3 years ago

What is the approximate volume of the cone? Use 22 for it. Enter your answer in the box.

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Step-by-step explanation:

$\frac{1}{3} ( \frac{22}{7} ) {(3)}^{2} (14) \\ \frac{1}{3} ( \frac{22}{7})(9)(14) \\ \frac{1}{3}( \frac{22}{7}) (126) \\ 42( \frac{22}{7}) \\ \frac{924}{7} \\ 132{cm}^{3}$

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3 years ago

How can adding doubles help you multiply by 2? give an example

Anuta_ua [19.1K]

It helps you multiply by two by giving you the answer to the expression.
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4 years ago

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hodyreva [135]

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3 years ago

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The concentration, in parts per million, of a type of antibiotic in a human's bloodstream after h hours can be modeled by the po

saveliy_v [14]

Answer:

$C(3)=17.69\ ppm$

Step-by-step explanation:

Given:

Given polynomial function is.

$C(h)=-0.09h^{2} +3.5h+8$

Hours $h=3$

We need to find the concentration of the antibiotic after 3 hours.

Solution:

Rewrite the given polynomial function as.

$C(h)=-0.09h^{2} +3.5h+8$

Substitute $h=3$ in given polynomial function.

$C(3)=-0.09(3)^{2} +3.5\times 3+8$

$C(3)=-0.09\times 9+10.5+8$

$C(3)=-0.81+10.5+8$

$C(3)=-0.81+18.5$

$C(3)=17.69\ ppm$

Therefore, the concentration of the antibiotic after 3 hours $C(3)=17.69\ ppm$ .

8 0

4 years ago