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3 years ago

Solve this equation for b. (3+2)-b=1

Mathematics

1 answer:

EleoNora [17]3 years ago

6 0

Answer:

b = 4

Step-by-step explanation:

First, 3 + 2 = 5

This can be substituted to 5 - b = 1

Subtract 5 from both sides leaving -b = -4

We don't want be to be negative so we divide the imaginary -1 that's in front of the b from both sides

This leaves b = 4

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A school club has 14 sixth graders, 20 seventh graders, and 16 eighth graders in its membership. What is the ratio of seventh gr

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3 years ago

(3k-2)(5k+4) find each product step by step

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Step-by-step explanation:

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3 years ago

If 4 - x - 7(x - 2)= - 6 then what is the value of x?

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Step-by-step explanation:

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3 years ago

HELP

Yakvenalex [24]

Answer:

5. 50.3 m²

6. 113.1 cm²

7. 102.1 yards²

8. 50.3 yards²

9. 452.2 ft²

10.379.8 ft²

Step-by-step explanation:

Area of a circle = nr²

The circumference of a circle = 2nr

n = pi = 22/7

r = radius

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

radius = diameter / 2

5. (22/7) x 4² = 50.3 m²

6. (22/7) x 6² =113.1 cm²

7. radius = 11.4/2 = 5.7 yards

(22/7) x 5.7² =102.1 yards²

8. radius = 8/2 = 4 yards

(22/7) x 4² = 50.3 yards²

9. 2nr = 75.4 yards

2 x (22/7) x r = 75.4

to find r, divide both sides of the equation by 2 and 7/22

r = 12 ft

Area = (22/7) x 12² = 452.2 ft²

10. 2nr = 69.1 yards

2 x (22/7) x r = 69.1

to find r, divide both sides of the equation by 2 and 7/22

r = 10.99 ft²

Area = (22/7) x 10.99² = 379.8 ft²

the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

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3 years ago