All categories

3 years ago

A teacher's assistant entered 10 scores into the online gradebook in

Mathematics

1 answer:

-Dominant- [34]3 years ago

8 0

Answer:

Ok I got it it’s 50

Step-by-step explanation:

because To divide by

, multiply by its reciprocal, 5.

10÷

= 105

= 50

You might be interested in

PleAse help and show how you got it if you don’t mind

Lorico [155]

1)

$\bf \textit{surface area of a cube}\\\\
s=6x^2\quad 
\begin{cases}
x=\textit{length of a side}\\
---------\\
s=150
\end{cases}\implies 150=6x^2\implies \cfrac{150}{6}=x^2
\\\\\\
25=x^2\implies \sqrt{25}=x\implies \boxed{5=x}$

3)

$\bf \textit{volume of a square pyramid}\\\\
V=\cfrac{b^2h}{3}\quad 
\begin{cases}
b=\textit{base's side}\\
h=height\\
-------\\
h=3\\
V=25
\end{cases}\implies 25=\cfrac{b^2\cdot 3}{3}\implies 25=b^2\cdot \cfrac{3}{3}
\\\\\\
25=b^2\cdot 1\implies 25=b^2\implies \sqrt{25}=b\implies \boxed{5=b}$

3 0

3 years ago

In the picture provided, right triangle ABC is drawn with a 72 degree angle. For right triangles with it an angle of 72 degrees

anygoal [31]

Answer:

105,3≈105

Step-by-step explanation:

sin 72°=19/20

sin 72°=100/x

x=(20*100)/19=105,3

x=BC

x- is hypotenuse

i calculated with calculator

6 0

3 years ago

A bicycle store costs $2800 per month to operate. The store pays an average of $80 per bike. The average selling price of each b

murzikaleks [220]

Let x = quantity of bicycles

($160x) - ($80x) = $2800. To solve for x, we have to combine the terms on the left side.

$80x = $2800. Divide each side by $80.

x = 35.

35 bicycles must he sold each month to break even.

4 0

4 years ago

Could someone answer the question with the photo linked below? Then explain how to solve it?

san4es73 [151]

Answer:

b = sqrt(57)

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

8^2 + b^2 = 11^2

64+ b^2 = 121

Subtract 64

b^2 = 121-64

b^2 =57

Take the square root of each side

b = sqrt(57)

8 0

3 years ago

Two pony express riders each rode part of a 176 mile trip. Each rider rode the same number of miles. They changed horses every 1

atroni [7]

Answer:

Total number of horses used = 16

Step-by-step explanation:

Two pony express riders each rode part of a 176 mile trip. Each rider rode the same number of miles.

$\texttt{Total mile rode by each pony express rider = }\frac{176}{2}=88miles$

They changed horses every 11 miles.

$\texttt{Number of horses used by each pony express rider = }\frac{88}{11}=8$

Total number of horses = Number of horses used by each pony express rider x Number of pony express rider

Total number of horses used = 8 x 2 = 16

Total number of horses used = 16

7 0

3 years ago

Read 2 more answers