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Svet_ta [14]
2 years ago
7

A student answers ​90% of the questions on a math exam correctly. If she answers 27 questions​ correctly, how many questions are

on the​ exam?
Mathematics
1 answer:
alexandr1967 [171]2 years ago
6 0

Answer:

30 questions

Step-by-step explanation:

You can discover this by doing 27 divided by . 90 which equals 30.

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A country's population in 1993 was 116 million.
labwork [276]

Answer:

124 million in 2007

Step-by-step explanation:

This is a proportion match question, we consider 121-116 to represent a 9 year change = 5 rate of change per 9 years. We need to find one year so we divide 5/9=0.55 per year growth. =2002- 2007= 0.55 million x 5 = 2.8million growth add 121 million = 121 =123.8 in 2007 = 124 million to nearest m.

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3 years ago
How to translate equation into a sentence j 16=35
timama [110]
J time sixteen equals thirty five.
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3 years ago
Find 3 3/4 divided by 4/5
steposvetlana [31]

Answer:

75/16 or 4 11/16

Step-by-step explanation:

The first answer is an improper fraction, and the second answer is a mixed number...

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3 years ago
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Round 18.159 to the nearest tenth
Mandarinka [93]

Answer:

18.2

Step-by-step explanation:

A tenth is the first decimal, on the right of your unit. 5 to the sky (round up) 4 to the floor (round down)

5 0
1 year ago
Use this expression to name each item. 7m3 + 6r2 – 3r - 8
Vitek1552 [10]

Answer:

In the given expression 7m^3 + 6r^2 - 3r - 8

Variables = m, r

Coefficients = 7, 6 and -3

constant= -8

Step-by-step explanation:

We are given the expression 7m^3 + 6r^2 - 3r - 8

We need to give variable, coefficients and constant.

Variable: The value of variable may change. It can be represented by x, y or any other letter

Coefficients: A numerical or constant quality that is placed with the variable. For example in 4x, 4 is coefficient

Constant: It is fixed value. It cannot be changed.

So, in the given expression 7m^3 + 6r^2 - 3r - 8

Variables = m, r

Coefficients = 7, 6 and -3

constant= -8

4 0
2 years ago
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