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QveST [7]
3 years ago
11

If 75% of a class answered the 1st question on a certain test correctly, 55% answered the 2nd question on the test correctly and

20% answered neither of the question correctly, what percent answered both correctly?
Mathematics
1 answer:
guapka [62]3 years ago
6 0
100-20=80
80-75=5
75-55=20
20+5=25
Answer=25
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Tanya has a garden with a trench around it .The garden is a rectangle with length 2 1/2m and width 2 m.
Hunter-Best [27]

The area of the trench is  5 \frac{1}{2} m²

Step-by-step explanation:

Tanya has a garden with a trench around it

  • The garden is a rectangle with length 2 \frac{1}{2} m and width 2 m
  • The trench and garden together with length 3 \frac{1}{2} m and width 3 m

We need to find the area of the trench

The area of the trench is the difference between the area of the garden with the trench and the area of the garden

The formula of the area of a rectangle is A = length × width

∵ The garden is a rectangle with length 2 \frac{1}{2} m and width 2 m

∴ Length = 2 \frac{1}{2} m

∴ Width = 2 m

Find the area of the garden

∴ A = 2 \frac{1}{2}  × 2 = 5 m²

∵ The trench and garden together with length 3 \frac{1}{2} m and width 3 m

∴ Length = 3 \frac{1}{2} m

∴ Width = 3 m

Find the area of the garden with the trench

∴ A = 3 \frac{1}{2}  × 3 = 10

The area of the trench = area of the garden with the trench - area of the garden

∴ The area of the trench = 10 \frac{1}{2}  - 5 = 5

The area of the trench is  5 \frac{1}{2} m²

Learn more:

You can learn more about the area of rectangles in brainly.com/question/6564657

#LearnwithBrainly

6 0
3 years ago
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Plz help <br>What's 1000+20+30+1000+1030+1000+20=?​
Ber [7]

Answer:

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Step-by-step explanation:

1000+1000+1000+1030=4030

20+20+30=70

4030+70=4100

5 0
2 years ago
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What is the base of a 36in triangle
ExtremeBDS [4]
Your correct answer is 12.

3 0
3 years ago
Elainas old bicycle had tires with a 12-inch diameter her new bicycle had tires with a 16-inch diameter what is the difference i
mr Goodwill [35]

Answer:

The difference between the circumference of the tires is 12.56 inches.

Step-by-step explanation:

Given:

Diameter of old bicycle tires = 12 inch

Diameter of new bicycle tires = 16 inch

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Solution:

First we will find the circumference of Old bicycle tires.

Circumference can be calculated by π times diameter.

Circumference of Old bicycle tire = \pi \times 12 = 37.68\ in

Now we will find the circumference of new bicycle tire.

Circumference of New bicycle tire = \pi \times 16 = 50.24\ in

Now to find the difference between the circumference of the tires we will subtract Circumference of New bicycle tire from Circumference of Old bicycle tire we get;

framing in equation form we get;

difference between the circumference of the tires = 50.24-37.68 =12.56\ in

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3 years ago
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Answer:

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Step-by-step explanation:

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