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3 years ago

Solve. 7 x 3/12 plz answer. and tell me, is it 21/12 ?

Mathematics

1 answer:

finlep [7]3 years ago

4 0

$7 * \frac{3}{12} = \frac{7*3}{12}= \frac{21}{12}$

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a round mirror has a circumference of 87.92 inches. calcuate the area of the mirror. use 3.14 for pi. round answersto the neares

AURORKA [14]

Answer:

615.75

Step-by-step explanation:

you divide 87.92 by pi (3.14 in this case) to get diameter, which you divide by 2 to get the radius to solve for area which you get 615.75

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3 years ago

Which expression is equivalent -7(4x-3)

Sav [38]

The answer is -28x+21

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4 years ago

Adrianne is planning to bake some chocolate, strawberry, and raisin muffins for a party. She was asked to bake half as many choc

Genrish500 [490]

Answer: She can bake 160 raisin muffins.

Step-by-step explanation:

Let the number of raisin muffins be 'x', then

The number of chocolate muffins = $\frac{1}{2}x$

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Since, the total muffins she can bake 480.

Therefore,

$x+\frac{x}{2}+\frac{3x}{2}=480\\\Rightarrow\frac{2x+x+3x}{2}=480\\\Rightarrow\frac{6x}{2}=480\\\Rightarrow\ x=\frac{480\times2}{6}\\\Rightarrow\ x=160$

Hence, she can bake 160 raisin muffins.

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3 years ago

watermelons cost $.39 per pound at a local market. Kent’s watermelon cost between $4.00 and $5.00. What are the possible weights

faust18 [17]

4/.39=10.26 lbs.

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3 years ago

Log_{7 }(5 - 3x) Find the derivative

V125BC [204]

Let y be the expression you want to differentiate:

$y=\log_7(5-3x) \implies 7^y=5-3x$

Now,

$7^y=e^{\ln(7^y)}=e^{y\ln(7)}$

Use the chain rule to differentiate both sides with respect to x :

$\ln(7)e^{y\ln(7)}\dfrac{\mathrm dy}{\mathrm dx}=-3$

Solve for dy/dx :

$\ln(7)7^y\dfrac{\mathrm dy}{\mathrm dx}=-3$

$\dfrac{\mathrm dy}{\mathrm dx}=-\dfrac3{\ln(7)7^y}$

$\dfrac{\mathrm dy}{\mathrm dx}=\boxed{-\dfrac3{\ln(7)(5-3x)}}$

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3 years ago