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3 years ago

9

Need an answer fast, solve for X will mark brainliest

1 answer:

Rufina [12.5K]3 years ago

5 0

x=18√5 or 40.25m

Step-by-step explanation:

by using Pythagoras law

h²=p²+b²

x²=36²+18²

x=√1620=18√5 or 40.25m

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Factor the expression: 400+ 100

QveST [7]

Answer:

400+100 = 500

Step-by-step explanation:

ya thats the sum

8 0

3 years ago

Read 2 more answers

Mariulka [41]

The larger number is 120 and the smaller number is 80

4 0

3 years ago

In a 10 mile race, Janet covered the first 2 miles at a constant rate. She then sped up and rode her bike the last 8 miles at a

xenn [34]

Answer:

$0.83\text{ miles per minute}$

Step-by-step explanation:

GIVEN: In a $10$ mile race, Janet covered the first $2$ miles at a constant rate. She then speed up and rode her bike the last $8$ miles at a rate that was $0.5$ miles per minute faster. Janet's overall time would have been $2$ minutes faster had she ridden her bike the whole race at the faster pace.

TO FIND: What was Janet's average speed (in miles per minute) for the whole race?

SOLUTION:

let the speed of Janet in first $2\text{ miles}$ $=x\text{ miles per minute}$

speed of Janet's bike in last $8\text{ miles}$ $=x\text{+0.5 miles per minute}$

total time taken by Janet,

$\text{Time}=\frac{\text{distance}}{\text{speed}}$

$\text{Time taken}=\frac{2}{x}+\frac{8}{x+0.5}\text{minute}$

Time taken if Janet rides whole race at faster pace $=\frac{10}{x+0.5}\text{minute}$

As, Janet's overall time would have been $2\text{ minutes}$ faster had she ridden her bike the whole race at the faster pace.

$\frac{2}{x}+\frac{8}{x+0.5}=\frac{10}{x+0.5}+2$

$\frac{2}{x}-\frac{2}{x+0.5}=2$

$\frac{1}{x}-\frac{1}{x+0.5}=1$

$x^{2} +0.5x-1=0$

on solving we get

$x=0.5\text{ miles per minute}$

$\text{Time taken}=\frac{2}{x}+\frac{8}{x+0.5}\text{minute}$

$\text{Time taken}=\frac{2}{0.5}+\frac{8}{1}\text{minute}$

$\text{Time taken}=\frac{2}{x}+\frac{8}{x+0.5}\text{minute}$

$\text{Time taken}=12\text{minute}$

Average speed $=\frac{\text{total distance}}{\text{time taken}}$

Average speed $=\frac{10}{12}=0.83\text{miles per minute}$

Therefore average speed of Janet was $0.83\text{ miles per minute}$

4 0

3 years ago

Como se escribe 696,543,098 en letra lo ocupo para una tarea

Sav [38]

Answer:

seiscientos noventa y seis millones quinientos cuarenta y tres mil noventa y ocho

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3 years ago

Write a formula to help Jaheed determine the

agasfer [191]

Answer:

n=m(x)

Step-by-step explanation:

n is the dependent variable m is the independent variable.

how many cartons, depends on how many liters are in a carton.

how many he needs to buy= the amount in carton× how ever much is in his recipe

for example

if they're are let's say 1.5 liters per carton than m=1.5. and if he needs 15 liters than n= 15

than the equation is

$15 = 1.5 \times x$

x is how many cartons he needs to buy

solve for x by dividing both sides of the equation by 1.5

$15 \div 1.5 = x$

and x=10 in this scenario

3 0

4 years ago