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2 years ago

What is the unit rate of $120 15 books

2 answers:

7 0

If 15 books cost $120 in total, that would make each book cost $8. To find this you will take the total amount of $120 and divide it by 15. 120 / 15 =8.

Svetlanka [38]2 years ago

3 0

I think its 8? someone correct me if im wrong.

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I ACTUALLY REALLY NEED A ANSWER FOR THIS SO IF YOU DONT ACTUALLY NO PLEASE DO NOT ANSWER!!!!

MrMuchimi

Answer:

The surface area is 10.26 feet.

Step-by-step explanation:

A=lw+l(w

2)2+h2+w(l

2)2+h2=0.8·0.8+0.8·(0.8

2)2+62+0.8·(0.8

2)2+62≈10.26131

3 0

2 years ago

How do you multiply anything not specific? sorry

Contact [7]

If it says 3×8 its like saying 8+8+8=21.
It's just a faster way of adding.

Anything multiplied by 0 is 0.

Anything multiplied by 10 just add a 0 to the end of the number example 10×2=20.

8 0

3 years ago

For the expression 34- 34a to have a negative value, what must be true about the value of a ?

MArishka [77]

Answer:

a>0

Step-by-step explanation:

if a is negative then the subtraction sign would switch. therefore, for the expression to have a negartive value a must be greater than 0

5 0

2 years ago

Solve the following equation for h. r+3Q/h=t

Arada [10]

Answer:

$\bold{h=\dfrac{3Q}{t-r}}$

Step-by-step explanation:

$\bold{r+\frac{3Q}h=t}\\-r\qquad\ -r\\\bold{\frac{3Q}h=t-r}\\\cdot h\qquad \cdot h\\ \bold{3Q=(t-r)h}\\^{\div(t-r)\quad\div(t-r)}\\\bold{\dfrac{3Q}{t-r}=h}$

Or, if you mean (r+3Q)/h=t:

$\bold{\frac{r+3Q}h=t}\\{}\ \ \cdot h\quad\ \cdot h\\\bold{r+3Q=ht}\\{}\ \ \div t\qquad \div t\\\bold{\dfrac{r+3Q}{t}=h}\\\\\bold{h=\dfrac{r+3Q}{t}}$

4 0

2 years ago

How do yo u times *fraction

motikmotik

Simplify the fractions if not in lowest terms.Multiply the numerators of the fractions to get the new numerator.Multiply the denominators of the fractions to get the new denominator.

8 0

2 years ago