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Bas_tet [7]
3 years ago
8

A science test has 20 questions. A student answers 80% of the questions correctly.

Mathematics
1 answer:
natita [175]3 years ago
8 0

Answer:

16 questions answered correctly

Step-by-step explanation:

Since the student answered 80% of the questions correctly, we can find 80% of 20 to answer this question.

[] First we will convert the percent into a decimal format;

80% / 100 = 0.8

[] Then we will multiply this by 20 to find our answer;

20 * 0.8 = 16 questions answered correctly

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the volume of a shipping container is 50.148feet how many smaller boxes each with a volume of 2.786 cubic feet does the shipping
Bess [88]

The answer is 18 I hope this helps

3 0
3 years ago
Please help and explain
pogonyaev

Answer:

x = 12

Step-by-step explanation:

3x - 1 + x + 7 = 54

4x + 6 = 54

4x + 6 - 6 = 54 - 6

4x = 48

\frac{4x}{4}  =  \frac{48}{4}

x = 12

3(12) - 1 + (12) + 7 = 54

36 - 1 + 12 + 7 = 54

35 + 12 + 7 = 54

35 + 19 = 54

54 = 54

3 0
3 years ago
Read 2 more answers
At a basketball game, 10% of people attending were supporting the home team, while
natka813 [3]

Answer:

500

Step-by-step explanation:

10% of people were supporting home and it was 50 people. Multiply 50 by 10 and you get 500. So the total number of people attending the game is 500.

Answer-500

7 0
4 years ago
The pyramid shown has a square base that is 18 inches on each side. It has a surface area of 864 square inches. What is the slan
disa [49]
The first step is to find the relationship between the square base and the surface area.

Surface area (SA) = area of the square (SS) + area of triangles.4(AT) 

Thus we can conclude area of triangles 4(AT) = SA - SS = 864 - (18*18)

4(AT) = 864 - 324 = 540

Each triangle = 540/4 = 135 square in.

An area of one triangle (AT)= (base* slant height)/2

The base = 18 in.

<span>slant height = 2(AT)/base = 2(135)/18 = 15</span>
3 0
4 years ago
An artist plans a sculpture by stacking two cubes. Write an algebraic expression the artist can use to find the volume of the sc
vesna_86 [32]

Answer:

V= 2x^3

The volume is 128cm^3

Step-by-step explanation:

Given

Cubes = 2

Sides = 4cm

Required

Determine an expression for its volume

Find the volume

Volume of a cube is:

Volume = x^3

Where x represents the length of a side

So, volume of 2 cubes would be:

V= x^3 + x^3

V= 2x^3

Solving (b): Volume when x = 4

Substitute 3 for x in V= 2x^3

V = 2 * 4^3

V = 2 * 64

V = 128

<em>Hence, the volume is 128cm^3</em>

5 0
3 years ago
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