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grandymaker [24]

2 years ago

13

The ratio of Boys to Girls in Mr. Asante Class is 2 to 3. There are 18 girls in the class. What is the total number of students

in Mr. Asante Class?

1 answer:

ladessa [460]2 years ago

7 0

Answer:

30

Step-by-step explanation:

2/3 = x/18

2*18 = 3x

36 = 3x

x=12

so there are 12 boys

12+18=30

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You have $30 to spend on gas for your vehicle this week. If gas costs $2.42 per gallon, how many gallons of gas can you buy? Rou

BartSMP [9]

Answer:

you can get 12 gallons on gas

Step-by-step explanation:

x/30=1/2.42

step 1) cross multiply

x * 2.42 = 1 * 30

2.42x=30

step 2) divide both sides by 2.42

2.42x/2.42 = 30/2.42

= 12.396694

round to the nearest gallon

≈12 gallons

5 0

2 years ago

please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.

likoan [24]

ANSWER:

$\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4$

STEP-BY-STEP EXPLANATION:

We have the following equation:

$f(x)=\sqrt{x}-4$

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

$\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\ \\ \sqrt{f^{-1}(x)}=x+4 \\ \\ f^{-1}(x)=(x+4)^2 \end{gathered}$

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

$\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4$

4 0

7 months ago

3. Lin had $18 in her bank account. She bought a ticket to the movies for

Elena-2011 [213]

$9 + $7 + $5 = $21 so $18 - $21 = account balance = -$3

5 0

3 years ago

HELP PLS HERE IS IT NEED IT

Zielflug [23.3K]

Step-by-step explanation:

Total students = 35

Probability that a student earns A B or C = 5 + 10 + 15 = 30

35/30 = 7/6

3 0

3 years ago

If the plane moved 253km south west and ther wind blows from 60south West calculator ther age

fomenos

Answer:

20

Step-by-step explanation:

7 0

3 years ago