[ LOTS OF POINTS ]help me with all 3 questions pls!

Mathematics

2 answers:

IgorC [24]2 years ago

7 0

Answer:

C) if the ratio is 10 to 8 then id be 12 to 10

E) if its 15 to 5 then id be 75 to 25

Step-by-step explanation:

IceJOKER [234]2 years ago

3 0

Answer:

d. 28

Step-by-step explanation:

I'm going to show you how to do these types of problems and the other two you should try by yourself.

There are 63 bikes. The ratio is 4:5 blue to red.

4x+5x=9x

9x=63

x=7

blue: 4x = 4*7=28

You might be interested in

2/5 (x-4) =2x. Solve for x

Bess [88]

$\dfrac{2}{5}(x-4)=2x\ \ \ \ |multiply\ both\ sides\ by\ 5\\\\2(x-4)=10x\ \ \ \ |use\ distributive\ property:a(b-c)=ab-ac\\\\2x-8=10x\ \ \ |add\ 8\ to\ both\ sides\\\\2x=10x+8\ \ \ \ |subtract\ 10x\ from\ both\ sides\\\\-8x=8\ \ \ \ |divide\ both\ sides\ by\ (-8)\\\\\boxed{x=-1}$

7 0

3 years ago

Question 9 20% of a particular brand of light bulbs fail in one year. What is the probability that three bulbs out of a random c

Delvig [45]

Answer:

The correct answer is 0.15

Step-by-step explanation:

According to the given scenario, the probability is as follows:

X $\sim$ Bin (n,p)