3 years ago

The teacher kept track of how long it took students to finish a test. After 20 minutes, 3 students had finished the test.

Mathematics

2 answers:

Olin [163]3 years ago

8 0

9 students finished the test

hammer [34]3 years ago

7 0

Answer: D. 10 students finished the test.
How I got that:
20 x 4. Which got me 80. (You had to get after 70)
9.5 students finished but round that up to 10.

You might be interested in

Round 69,814 to the nearest hundred

tamaranim1 [39]

Answer:

69,800 thats the answer

6 0

3 years ago

A 12-foot piece of string is cut into two pieces so that the longer piece is 3 feet longer than twice the shorter piece. Find t

nikklg [1K]

Hope this helps you.

5 0

3 years ago

Please answer to receive ten points. I'll vote who answers first the brainliest if its correct.

beks73 [17]

The distance between points $P_1(x_1,y_1)$ and $P_2(x_2,y_2)$ can be calculated using formula

$P_1P_2=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}.$

$AB=\sqrt{(-7-(-11))^2+(8-4)^2}=\sqrt{16+16}=\sqrt{32}=4\sqrt{2}\approx 5.657.$

$AC=\sqrt{(-4-(-11))^2+(4-4)^2}=\sqrt{49+0}=\sqrt{49}=7.$

$CB=\sqrt{(-7-(-4))^2+(8-4)^2}=\sqrt{9+16}=\sqrt{25}=5.$

Then

$P_{ABC}=5.657+7+5=17.657\approx 17.7$

Answer: correct choice is C.

3 0

3 years ago

Sarah's holiday wreath has 5 more than twice as many blue lights as green lights and 7 less than 5 times as many red lights as g

gregori [183]

Agvwlwowowwbw wmaalaoahq w

4 0

3 years ago

And object is traveling at a steady speed of 8 2/3 mph how long will it take to object to travel 5 1/5 miles

LenaWriter [7]

$\bf \begin{array}{ccll}
miles&hours\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
8\frac{2}{3}&1\\\\
5\frac{1}{5}&h
\end{array}\implies \cfrac{8\frac{2}{3}}{5\frac{1}{5}}=\cfrac{1}{h}\implies \cfrac{\quad \frac{26}{3}\quad }{\frac{26}{5}}=\cfrac{1}{h}\implies \cfrac{26}{3}\cdot \cfrac{5}{26}=\cfrac{1}{h}
\\\\\\
\cfrac{5}{3}=\cfrac{1}{h}\implies 5h=3\implies h=\cfrac{3}{5}$

which is just 36 minutes.

8 0

3 years ago