We have an equation: 250/?= 50/100

Cross multiply:
50*?= 250*100
⇒ ?= 250*100/50= 500

The number is 500~

We have another equation: ?/500= 80/100

Cross multiply:
100*?= 80*500
⇒?= 80*500/100= 400

80% of 500 is 400~

3 0

3 years ago

Turn into simplest form using LCM method<br> 5/8 + 3/4<br> please show full working

yKpoI14uk [10]

Answer:

$\frac{11}{8}$

Step-by-step explanation:

$\frac{5}{8}+\frac{3}{4}$

$\frac{5}{8}+\frac{3*2}{4*2}$

$\frac{5}{8}+\frac{6}{8}$

$\frac{5+6}{8}$

$\frac{11}{8}$

7 0

2 years ago

The y-intercept of the graph of y = -7x + 140 is located at (0,c). What is the value of c

Alex787 [66]

Answer:

c = 140

Step-by-step explanation:

y = -7x + 140

-7 x 0 + 140

0 + 140

c = 140

(x = 0, y = c)

(0,140)

4 0

3 years ago

Read 2 more answers

Help pls it's urgent. I would greatly appreciate it.

Damm [24]

Answer:

I think its 3 but i might be wrong

Step-by-step explanation:

Hope this helps

4 0

3 years ago

Read 2 more answers