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Tomtit [17]
3 years ago
14

The sixth-grade science class found that 20% of the students in the school were left- handed. If there were 800students in the s

chool, how many were left-handed?
Mathematics
1 answer:
makkiz [27]3 years ago
4 0

Answer: 160

Step-by-step explanation:

So first you start by making the percent which is 20 a decimal (.20) . Then , you multiplu .20 by 800 and get 160 , or if you know 10% is 80 2 times that would be 20 percent . And 80 plus 80 is 160 .

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I = Prt
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Find the perimeter of the figure below, in feet.(Note: diagram is NOT to scale)
Semenov [28]
70.2 feet just add it all together
6 0
3 years ago
Uma is planning to decorate a blanket with a triangular shape that has a base of 5 centimeters and a height of 7 centimeters. Sh
Mariana [72]

Answer:

<h2>1,190cm²</h2>

Step-by-step explanation:

The Area of a triangle is expressed  as 1/2 * base * height. If uma is planning to decorate a blanket with a triangular shape that has a base of 5 centimetres and a height of 7 centimetres, area of the blanket will be expressed as shown;

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6 0
3 years ago
Solve the following system of equations using the substitution method.
sergey [27]

Answer:

y=1; x=2

Step-by-step explanation:

Substitution:

x=2y

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=> if x=2y, plug in the x value into other equation, so

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2(2y)+5y=9

4y+5y=9

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You have the Y value, so now solve for X

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plug in y value to x=2y

so x=2(1)

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5 0
3 years ago
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