MATHEMATICS HIGH SCHOOL

The perimeter of a rectangle is 90 centimeters. The width of the rectangle can be represented by (x + 2), and its length can be represented by (3x - 5). What are the dimensions of this rectangle in centimeters?A With = 10 and length = 25
B With = 12 and length = 29
C With = 14 and length = 31
D With = 16 and length = 32

Answers

Answer 1
Answer: Perimeter of a rectangle=2lenght + 2width
In this case:
Perimeter=90 cm
width=(x+2)
lenght=(3x-5)
Then:

2(x+2)+2(3x-5)=90
2x+4+6x-10=90
2x+6x=90+10-4
8x=96
x=96/8
x=12

with=(x+2)=12+2=14
lenght=(3x-5)=3*12-5=31

Answer: C width=14 and lenght=31.

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If I read 52 pages in 2 hrs and Tim reads 1/4 more in 2 and1/2 hr. who read faster?

Answers

They read at the same speed
If we split the time where you read into half hour intervals we would have
13 pages per 30 minutes
and since (1)/(4)* 52= 13 and the time added is 30 minutes we know that You and Tim read at the same speed. 
so Tim read 13 pages =1/4 of 52 pages in (2 and 1/2 hr) - (2hrs) = 1/2 hr
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Issa jogged 2/3 of the way home from school .Then he was tired ,so he walked the remaining 3,200 m how many kilometers did he travel from school to home

Answers

Answer:

9.6 km

Step-by-step explanation:

Issa jogged 2/3 of the way home from school.

Then he was tired, so he walked the remaining 3200 m.

In other words, the remaining 3200 m is 1/3 of the way from school to home.

Let the distance from school to home be x. Therefore:

(1)/(3) * x = 3200\n\n=> x = 3200 * 3 \n\nx = 9600 m

Therefore, from school to home he traveled 9600 m.

To put this is kilometres:

1000 m = 1 km

9600 m = 9600 / 1000 = 9.6 km

He traveled 9.6 km from school to home.

Hey, I'm a bit rusty on math. Please provide an answer with an explanation :-) (1)/(x+4) - (1)/(x+5) = (1)/(12) where x_(1) \leq x_(2)

Answers

x_(1) =-8 \n x_(2) = -1

Which measurement is most accurate to describe the distance from Los Angeles to New York City?8,000 mm
6,000 m
50 km
4,000 km

Answers

mm = millimeters
m = meters
km = kilometers

So the distance is roughly 2, 500 miles so 4000km would be closer than the 3 measurements.

Answer: it will be  4,000 km

Step-by-step explanation:

Solve the system of inequalities by graphing.
y<-4X – 1
y > 6x+7

Answers

Answer:  Graph A looks correct

Step-by-step explanation:

See attachment

Answer:

..A.nswer is option A..

A newborn weighs 8 pounds and 5 ounces. There are 453.59 grams per pounds. What is the infant's weight in grams ?

Answers

453.59x8=3628.72

5 ouces= 453.59/16x5=141.746875

141.746875+3628.72=3770.466875 grams

hope this helps
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