3 years ago

8 out of 10 dentists prefer Crest toothpaste what is the ratio of dentist who dont prefer crest toothpaste than those who do?

Mathematics

1 answer:

Nata [24]3 years ago

4 0

Answer:

1:4

Step-by-step explanation:

If 8/10 prefer Crest, that means 2/10 don't prefer it.

To find the ratio, put together the number that don't prefer it to the number that does:

2:8

Simplify by dividing each side by 2:

1:4

So, the ratio is 1:4

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Determine the value of a + b in the system of equations below. 5a + 4b = 22 7a-b= 11

dexar [7]

Answer:

We have a + b as;

2 + 3 = 5

Step-by-step explanation:

Here, we want go get the value of a and b

from the second equation, we can get an expression for b

We have this as;

7a - b = 11

Thus,

b = 7a - 11

Now, from here, we can substitute the value of b into the first equation

We have this as;

5a + 4(7a - 11) = 22

5a + 28a -44 = 22

33a = 22 + 44

33a = 66

a = 66/33

a = 2

Recall;

b = 7a - 11

substituting the value of a from above;

b = 7(2) - 11

b = 14 - 11

b = 3

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3 years ago

Please help

AVprozaik [17]

I personally think it's C I hope it's right if not I'm Sorry

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3 years ago

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gladu [14]

Answer:18

Step-by-step explanation:

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3 years ago

A pair of vertical angles has measures (3x+4)° and (7x-9)° What is the value of x?

Andrei [34K]

Since they are vertical they are equal to each other.

3x + 4 = 7x - 9
4 = 4x - 9
13 = 4x
3.25 = x

So the value of x is 3.25.

Hope this helps :)

5 0

3 years ago

In a random sample of students at a middle school 24 wanted to change the mascot and 30 wanted to keep the current mascot which

Yakvenalex [24]

30/54 =x/1,140
30*1140= 34200
34200/54 = 633.33
ANSWER:
Estimated- 633

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3 years ago