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3 years ago

E x e x e x e x f divided by e x e x e x f x f

Mathematics

2 answers:

meriva3 years ago

6 0

Answer:

thx for points

Step-by-step explanation:

lianna [129]3 years ago

6 0

Answer:

the equation will be:

e^4f/e^3f^2

= e/f is the answer.

Step-by-step explanation:

just subtract the exponent from the numerator to the denominator. If the exponent is negative, the location will be in the denominator

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Solve the system by substitution. y = 8x + 32 Y= -8x

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2 years ago

What is 0.15x10^-2 written in scientific notation?

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3 years ago

A chemical company makes two brands of antifreeze. The first brand is 20% pure antifreeze, and the second brand is 70% pure anti

andre [41]

Answer:

First brand of antifreeze: 21 gallons

Second brand of antifreeze: 9 gallons

Step-by-step explanation:

Let's call A the amount of first brand of antifreeze. 20% pure antifreeze

Let's call B the amount of second brand of antifreeze. 70% pure antifreeze

The resulting mixture should have 35% pure antifreeze, and 30 gallons.

Then we know that the total amount of mixture will be:

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Then the total amount of pure antifreeze in the mixture will be:

$0.2A + 0.7B = 0.35 * 30$

$0.2A + 0.7B = 10.5$

Then we have two equations and two unknowns so we solve the system of equations. Multiply the first equation by -0.7 and add it to the second equation:

$-0.7A -0.7B = -0.7*30$

$-0.7A -0.7B = -21$

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$-0.5A = -10.5$

$A = \frac{-10.5}{-0.5}$

$A = 21\ gallons$

We substitute the value of A into one of the two equations and solve for B.

$21 + B = 30$

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3 years ago

Original price of concert tickets: $100.00 discount: 21 %

Arisa [49]

Answer:

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Step-by-step explanation:

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3 years ago

Hannah walked 0.75 of a mile between 7:35 am and 7:47 am. At what speed, in miles per hour, did she walk during this time interv

BARSIC [14]

0.75 miles in 12 minutes

0.75 * 5 miles in one hour

15 / 4 miles in an hour

she walked at 3.75 mph

this assumes she walks at the same pace for the whole time

please give brainliest

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2 years ago