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3 years ago

Please help me with this

Mathematics

1 answer:

Ghella [55]3 years ago

7 0

Answer:5,2,4,8

Step-by-step explanation:hope it helped

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How many fifths are in 1.8

denpristay [2]

There are 9 fifths in 1.8

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3 years ago

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Do males spend more time playing online games than females? A random sample of 100 males and females was selected. Let mꜰ be the

Lina20 [59]

Answer:

A random sample of 100 male and females was selected. Let muf be the population mean number of hours spent playing online games for females and let mum be the population mean number of hours spent playing online games for males.

Step-by-step explanation:

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3 years ago

The length of a rectangle is 3 inches more than its width. The perimeter of the rectangle is 34 inches. The length of the rectan

astra-53 [7]

Answer: Width= 7 in.

Length= 10 in.

Step-by-step explanation:

$l=w+3$

The perimeter of the rectangle is 34 inches.

$2(w+l)=34$

substitute

$2(w+w+3)=34$

$2(2w+3)=34$

distributive property $a(b+c)=ab+ac$

$2\cdot 2w+2\cdot 3=34$

$4w+6=34$

$4w+6-6=34-6$

$4w=28$

divide 4 on both sides

$w=7$

Width is 7 inches

substitute w=7 in equation $l=w+3$

$l=7+3$

$l=10$

Length is 10 inches

5 0

4 years ago

Volunteers helped clean up 8.2 kg of trash in one neighborhood and 11 1/2 kg in another. They sent 1 1/4 kg to be recycled and t

Ivan

Answer: $18.45\ kg$ or $18\frac{9}{20}\ kg$

Step-by-step explanation:

We can convert from mixed numbers to decimal numbers:

$11\frac{1}{2}\ kg=(11+0.5)\ kg=11.5\ kg\\\\1\frac{1}{4}\ kg=(1+0.25)\ kg=1.25\ kg$

Since they cleaned up 8.2 kilograms of trash in one neighborhood and 11.5 kilograms in another neighborhood, the total trash they cleaned up was:

$Total=8.2\ kg+11.5\ kg\\\\Total=19.7\ kg$

We know that they sent 1.25 kilograms to be recycled. Then, in order to calculate how many kilograms of trash they threw away, we must subtract the total kilograms of trash they cleaned up and the kilograms they sent to be recycled.

Then:

$19.7\ kg-1.25\ kg=18.45\ kg$ or $18\frac{9}{20}\ kg$