All categories

2 years ago

HELP! HELP! HELP! PLEASE 80 Points!

Mathematics

1 answer:

igor_vitrenko [27]2 years ago

5 0

Answer:

the sides of a rectangular are (x+1)m and (2x +5)m if the perimeter is 36m find the value of x

You might be interested in

There is a bowling ball with a diameter of 216 mm and a baseball with a diameter of 74 mm. Find how many times greater the volum

Natali5045456 [20]

The diameter of the bowling ball will be 3 times greater than the baseball

8 0

3 years ago

Jim is trying to improve his speed on the track so he can qualify for the State Championships. As he is running, he goes from 70

kumpel [21]

Answer:

His acceleration is $\frac{1}{15}$ meters per seconds²

Step-by-step explanation:

Acceleration is the rate of change of the speed

The formula of acceleration is $a=\frac{v_{f}-v_{i}}{t}$ , where

$v_{f}$ is the final speed
$v_{i}$ is the initial speed
The unit of the acceleration is meters/second²

∵ Jim goes from 70 meters/minute (beginning speed) to

106 meters/minute (final speed) in 9 seconds

∴ His initial speed $v_{i}$ = 70 meters/minute

- Change it the meter per second

∵ 1 minute = 60 seconds

∴ $\frac{70}{(1)(60)}=\frac{70}{60}=\frac{7}{6}$ meters/second

∴ $v_{i}$ = $\frac{7}{6}$ meters/second

∵ His final speed $v_{f}$ = 106 meters/minute

- Change it the meter per second

∴ $\frac{106}{(1)(60)}=\frac{106}{60}=\frac{53}{30}$ meters/second

∴ $v_{f}$ = $\frac{53}{30}$ meters/second

∵ The time of the change of his speed is 9 seconds

∴ t = 9

∵ The formula of acceleration is $a=\frac{v_{f}-v_{i}}{t}$

- Substitute the values of t, $v_{i}$ and $v_{f}$ in the formula above

∴ $a=\frac{\frac{53}{30}-\frac{7}{6}}{9}=\frac{1}{15}$

∴ His acceleration is $\frac{1}{15}$ meters per seconds²

3 0

3 years ago

NEED HELP FAST WILL GIVE BRAINLIEST

Olin [163]

The answer is A, as I calculated the difference using Pythagora's Theorem. Which I then did 7.6-6.3= 1.29122, which rounds to 1.0 cm^2

7 0

4 years ago

Read 2 more answers

Which of the following values is not a perfect square?<br> a.81<br> b.125<br> c.49<br> d.100

SashulF [63]

Answer: b. 125

Step-by-step explanation:

Find the square roots of each, and if the square root is a decimal, it is not a perfect square.

Square root of 81: 9

Square root of 49: 7

Square root of 100: 10

That leaves 125.

4 0

2 years ago

Read 2 more answers

Sally had to raise money for a plane ticket for ever 20 minutes it was 24.00 $ the plane ride was 3 hours how much would it be i

seropon [69]

$216

20=$24

20*3 $24*3

60=$72

*3 *3

180=$216

(180=3 hours)

4 0

3 years ago

Read 2 more answers