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2 years ago

Angie read 22 pages during a 30-minute study hall. At this rate, how many pages would she read in 45 minutes

1 answer:

4 0

45 minutes is equal to 1.5 times 30:

1.5*30=45

so she will also read 22*1.5 pages, which is 22+11=33

so she will read 33 pages

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In ten years, the population of Detroit fell from 950,000 to about 712,500. Find the percent change.

sergij07 [2.7K]

Answer:

25% decrease

Step-by-step explanation:

Percent change can be found by doing difference/original

(950,000 - 712,500) / 950,000

= 0.25

There was a 25% decrease in the population

5 0

2 years ago

Marguerite answered 79% of the questions on her test correctly. What fraction of the questions did she answer correctly?

djyliett [7]

Answer:

79 of the questions were right/coreect

Step-by-step explanation:

if you have 100 quesions and you get 79% done and correct then you did 79 answers right

3 0

1 year ago

The perimeter of the big wheel of a bicycle is 9 cm longer than the perimeter of the front wheel. On the road of 120 cm, the big

beks73 [17]

Answer:

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A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute. If the diameter of the wheel is 60cm, calculate the speed per hour with which the boy is cycling.

Easy

Solution

verified

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Radius of the wheel =r=

=30 cm

Circumference of the wheel =2πr=2×

×30=

1320

Distance covered in 1 revolution =

1320

Distance covered in 140 revolutions =

1320

×140=26400 cm=264 m=

1000

264

Distance covered in one minute = Distance covered in 140 revolutions =

1000

264

Distance covered in 1 hour =

1000

264

×60=15.84 km

Hence, the speed with which the boy is cycling is 15.84km/hr.

3 0

1 year ago

there are a total of 100 balloons.if the ratio of yellow balloons to blue balloons is 8 to 12,how many of them are yellow?

IrinaK [193]

The ratio of yellow balloons to blue balloons is 8:12
Then there are 100 balloons. Making the equation, we are able to have:
8X + 12X = 1000
20x = 1000
X = 50.

Yellow balloons = 8x = 8 * 50 = 400 yellow balloons
Blue balloons = 12X = 12 * 50 = 600 blue balloons

So there are 400 yellows balloons.

8 0

2 years ago

PLEASE HELP. I need an answer by Nov 5

DochEvi [55]

Answer:

Step-by-step explanation:

1. M is the midpoint of CD; CM = 3x - 10; MD = 6x - 22; GIVEN

2. CM = MD Definition of Midpoint

3. 3x - 10 = 6x - 22 Substitution Property

4. -3x - 10 = - 22 Subtraction Prop of Equality

5. -3x =-12 Addition Prop of Equality

6. x = 4 Division Prop of Equality

3 0

2 years ago

Read 2 more answers