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valentinak56 [21]

3 years ago

12

The value of the expression 3^-4 • 3^-5 is

1 answer:

attashe74 [19]3 years ago

5 0

Answer:

3^-9

Step-by-step explanation:

3^-4 • 3^-5

We know that a^b * a^c = a^(b+c)

3^-4 • 3^-5 = 3^(-4-5) = 3^ -9

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Gary is making a casserole but only needs 1/3 of the original serving size. If the number of servings Gary needs is 4, how many

Deffense [45]

Answer:

What equation will model the situation?

✔ x/3 = 4

How many servings did the original recipe make?

✔ 12

Step-by-step explanation:

Hope this helps!

7 0

3 years ago

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The senior classes at High School A and High School B planned separate trips to Lake Compounce. The senior class at High School

storchak [24]

Answer:

Number of students in vans =15 and bus =46

Step-by-step explanation:

use variables for the vans and buses

let x= vans and y=buses

Now solve the 2 equations simultaneously

<em><u>remember</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>your</u></em><em><u> </u></em><em><u>equations</u></em>

6x+7y=412..........1

6x+9y=504.........2

make x the subject of one equation

and label it equation 3

6x=412—7y

$x = \frac{206}{3} - \frac{7y}{6} .............3$

subs 3 into 2

$6( \frac{206}{3} - \frac{7y}{6} ) + 9y = 504$

$412 - 7y + 9y = 504$

$- 7y + 9y = 504 - 412$

$2y = 92$

$y = 46...................4$

subs 4 into 1

$6x + 7(46) = 412$

$6x + 322 = 412$

$6x = 412 - 322$

$6x = 90$

$x = 15$

Therefore there are 15 students in each van and 46 students in each bus.

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3 years ago

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WINSTONCH [101]

Answer:

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Step-by-step explanation:

50 miles matches up with 1 hour, 100 miles matches up with 2 hours, and so on.

Hope this helps! :)

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alex41 [277]

Answer:

error

Step-by-step explanation:

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3 years ago

In circle Z, what is m∠2? 70° 133° 140° 147°

sattari [20]

Answer:

C

140

Step-by-step explanation:

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3 years ago

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