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DiKsa [7]
3 years ago
9

Ayden earned a grade of 89% on his multiple choice history final that had a total of

Mathematics
2 answers:
Genrish500 [490]3 years ago
4 0

Answer:

178

Step-by-step explanation:

Method 1: Set up a proportion

Set up an equation of the form:

\frac{\color{red}{\text{part}}}{\color{orange}{\text{whole}}}=

whole

part

​  

=

\,\,\frac{\color{blue}{\text{percent}}}{100}

100

percent

​  

 

Assign the variable xx to the unknown value:

\color{red}{x}=

x=

\,\,\color{red}{\text{part}}

part

The question asks what \textit{part}part of the total questions is 89%

Substitute the known values with the numbers given in the problem, and the unknown value with xx:

\frac{\color{red}{x}}{\color{orange}{200}}=

200

x

​  

=

\,\,\frac{\color{blue}{89}}{100}

100

89

​  

 

Solve for xx:

100\cdot\color{red}{x}=

100⋅x=

\,\,\color{orange}{200}\cdot\color{blue}{89}

200⋅89

Cross multiply

\frac{100x}{100}=

100

100x

​  

=

\,\,\frac{17800}{100}

100

17800

​  

 

Divide both sides by 100

178

Simplify

Method 2: Convert to decimal and multiply

{89}{100}=0.89

89%=  

100

89

​  

=0.89

Move decimal 2 places to the left

{Multiply result by the total:}

Multiply result by the total:

0.89{200}=

0.89⋅200=

178

number

percent

178

89%

200

100%

Aloiza [94]3 years ago
4 0

Answer:

178

Step-by-step explanation:

just trust meee

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A scale drawing of a door is 2 cm high. If the scale is 1 cm = 4 meters, what is the actual height of the door?
Vikentia [17]
Solve;

If each cm = 4 meters, then you multiply.

4*2 

= 8 

There are 2 cm, each cm = 4 meters, so you multiply to get your answer.

The final height of the door is 8 meters. 



7 0
3 years ago
I kinda need help with this
Licemer1 [7]

Answer:

7.

Step-by-step explanation:

What you can do to figure it out is divide 35 by all the answers. If it comes out even that's the answer. 35/7 = 35

<em>hope this helps, good luck :)</em>

3 0
3 years ago
Pls help due today :( 26 points promise
Stels [109]
Answer = 14/8

Step by step explanation
2 x 7/8
= (2x7)/8
= 14/8
6 0
2 years ago
Solve for N. Express the solution in decimal form.
Dmitriy789 [7]

Answer:

N= 3.8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
X varies directly as y. If x is 9 when y is 4, find x when-y is 8.
jeka94

Answer:

see explanation

Step-by-step explanation:

Given x varies directly as y then the equation relating them is

x = ky ← k is the constant of variation

To find k use the condition x = 9 when y = 4

k = \frac{x}{y} = \frac{9}{4} = 2.25

x = 2.25y ← equation of variation

When y = 8, then

x = 2.25 × 8 = 18

4 0
3 years ago
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