What number is 25 percent of 400?

Answers

Answer 1
Answer: 400 x .25 = x

Change the 25% into a decimal

400 x .25 = 100

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How many solutions does the equation 3x-7=4+6+4x have?

Answers

One, x = -17, since when you work it out, it will come to this.

an equation can have only one solution,

- 1x =  + 17
x = 17 /  - 1
x =  - 17

Juwan drives an ATV due east from the edge of a road into the woods. The ATV breaks down and stops after he has gone 2000 feet. In a coordinate system where the positive y-axis points north and the units are hundreds of feet, the equation of the road is 5x-3y=0How far is Juwan from the road?

Answers

Answer: C) 1715 ft.

1+4=5, 2+5=12, 3+6=21 , 8+11=?

Answers

If there is a pattern here to follow then the person before is wrong. If there is no pattern then you are wrong with all of the answers there 

8+11=40 This is because in this pattern you take the equations before answer and add it to the equation you have so for the first equation you have 5 for the second equation you actually add 2+5+5=12 so the last one equals 8+11+21=40

Hope This helps!

Sybrina jogged 2 miles in 30 minutes. At this rate, how far would she jog in 90 minutes?At what rate did she jog each hour?

Answers

6 miles in 90 minutes and 4 miles per hour. 30 times two is 60 min so 2 miles times two is 4 miles. 

another 30 min is 90 min and another two miles is 6 miles.
2miles per 30min - 2 to 3
90/30=3x2=6
6miles in 90min
She was jogging @ a 1mile per 15min but each hour it was 4mile per hour

A sphere has a radius of 31 millimeters. Find it's volume to the nearest tenth please. (Use 3.14 for pi)

Answers

Answer:

V ≈ 124,725 mm^3

Step-by-step explanation:

Let's use the formula for volume of a sphere:

v =  (4)/(3)\pi {r}^(3)

v =  (4)/(3) (3.14) {31}^(3)

v =  (4)/(3)(3.14)29791

v = (4)/(3) 93543.74

v =  (4)/(3) *  (93543.74)/(1)  =  (374174.96)/(3)

v =  374174.96 / 3

Matthew is 2 yards tall. How many inches tall is he?

Answers

He is 72 inches tall because 1 yard = 36 inches and 36 x 2 equals 72 inches
72 inches because 36 inches is 1 yard so you add 36 and 36 together to get 72 which is 2 yards.