3 years ago

Wha is the height of a prism if the surface area is 460mm^2

Mathematics

1 answer:

worty [1.4K]3 years ago

7 0

7MM because the prisma is retangular so the answer is c

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3. Merrick walked 5.5 miles to his friend's house. He left his house at 9 a.m. and arrived at his friend's

Delicious77 [7]

Answer:

B. 2.75 mph

Step-by-step explanation:

If it took him 2 hours to walk 5.5 miles, 5.5 ÷ 2 = 2.75, which is what he walked in a single hour, meaning he was walking 2.75 mph

5 0

3 years ago

A town is replacing a sidewalk that serves eight homes. the length of the sidewalk is 900 feet. laura's property has 60 feet of

Papessa [141]

we know that

by proportion

$\frac{18,000}{900} \frac{\$}{feet}= \frac{x}{60}\frac{\$}{feet} \\\\ 900*x=18,000*60 \\\\x= \frac{18,000*60}{900}\\\\ x= \$1,200$

therefore

the answer is

$\$1,200$

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2 years ago

Ralph is 3 times as old as sarah. In 6 years, ralph will be only twice as old as sarah will be then. Find ralph's age now. If x

vladimir1956 [14]

X - Sarah's age now
3x - Ralph is 3 times as old as Sarah, now
x+6 - Sarah's age in 6 years
2(x+6)=2x+12 - Ralph will be only twice as old as Sarah will be in 6 years
Ralph's age in six year can be also written as 3x+6

So
Ralph's age now is 3x.
Ralph's age in six years is 2x+12 and 3x+6.

We can find age of Sara now,
2x+12=3x+6
3x-2x=12-6
x=6,
Ralph's age now is 3x=3*6=18
Now Sara is 6 years old, Ralph is 18 years old.

7 0

3 years ago

In a survey of 300 students 24 students said that social studies was their favorite subject. What percentage of the students ask

RoseWind [281]

Answer:

Step-by-step explanation:

24/300 = 0.08 = 8%

4 0

2 years ago

Please help, because I didn't know this 2 143 (1+3+3+...+3

oksano4ka [1.4K]

1000+1000+100+10+10+10+10+1+1+1

5 0

3 years ago