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Wewaii [24]
3 years ago
7

Rory earned an 84% on his test. He answered 21 questions correctly. How many total questions were on the test? Round to the near

est tenth if necessary.
Mathematics
1 answer:
Free_Kalibri [48]3 years ago
6 0

Answer:

25 questions

Step-by-step explanation:

84%*x = 21

-simplify-

0.84 *x = 21

Divide both sides by 0.84 than...

you get x = 25

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Find the sum of the first 10 terms of the following geometric sequences:<br> {3, 6, 12, 24, 48...)
bonufazy [111]

Answer:

3069

Step-by-step explanation:

q=6/3=2

s10=3(2^10-1)÷(2-1)=3×(1024-1)=

3069

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4 years ago
I NEED HELP ON THIS ASAP PLEASEEEEE
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Answer:

b

Step-by-step explanation:

8 0
3 years ago
The variable z is directly proportional to x, and inversely proportional to y. When x is 4 and y is 13, z has the value 1.230769
Talja [164]

Answer:

Step-by-step explanation:

1.2307692307692.

The first step is to find the proportionality constant.

The formula is

z = kx/y

1.2307692307692 = k * 4/13          Multiply both sides by 13

1.2307692307692 * 13 = 4k

16 = 4*k                                            Divide by 4

k = 16/4

k = 4

=================================

z = k*x/y

x = 9

y = 20

k = 4

z = 4 *9/20

z = 36/20

z = 1.8

7 0
3 years ago
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Name the quadrilaterals that have four equal angles.
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B. square, rectangle
7 0
3 years ago
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Simplify each equation <br> (x^4)(x^2)
BartSMP [9]
Ok, so remember the exponentioal law that says
( x^{m} )(x^{n})=x^{m+n} so


( x^{4} )(x^{2})=x^{4+2}= x^{6}

answe ris x^6
5 0
3 years ago
Read 2 more answers
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