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Katena32 [7]
3 years ago
13

13 is 65% of what number?​

Mathematics
1 answer:
umka21 [38]3 years ago
5 0

Answer:

20

Step-by-step explanation:

set up equation

13/x=65/100

cross multiple: 1300=65x

divide 1300/65=20

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Solve -8 =2(z-18) for z
Ainat [17]

Answer:

z=14

Step-by-step explanation:

-8=2(z-18)

  -8=2z-36

<u>+36     +36</u>

28=2z

28/2=14

z=14

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3 years ago
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What is the C term in this problem: x^2+3x+2
EleoNora [17]

Answer:

2

Step-by-step explanation:

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A = 1 (imaginary)

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C = 2 (same as y-intercept)

8 0
3 years ago
What is the number in scientific notation?<br><br> ​0.000000000093
Katen [24]
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3 years ago
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Find the value of B - A if the graph of Ax + By = 3 passes through the point (-7,2), and is parallel to the graph of x + 3y = -5
alisha [4.7K]

Answer:

The found values are:

A = 1/3

B = -8/3

Step-by-step explanation:

We know that general equation is given by:

y = mx + c

where m is the slope and c is a constant.

x + 3y = -5

y = -(1/3)x - 1/3(5)

Slop of the equation is -(1/3). As parallel line have same slope substitute it in the first equation:

Ax + By = 3

By = -Ax - 3

By = (1/3)x - 3

Hence, A = 1/3

Substitute point (-7,2) into the equation:

B(2) = (1/3)(-7) -3

B(2) = -7/3 - 3

B(2) = -16/3

B = -16/6

B = -8/3

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3 years ago
The owner of a quick oil-change business charges
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