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sergeinik [125]
2 years ago
6

Three triangles are shown.

Mathematics
1 answer:
Agata [3.3K]2 years ago
7 0

Answer:

I think that it may be the last one

Step-by-step explanation:

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H e l p p l e a s e
BigorU [14]

Answer:

17.) 12

18.) 1/15

Step-by-step explanation:

2 ÷ \frac{1}{6}

This problem is asking how many \frac{1}{6} 's can go into 2 blocks.  If you divide one box into 6 parts, each tiny box will be \frac{1}{6} of the whole. Divide the other box into 6 parts as well, and you will get 12 of these \frac{1}{6} parts.  Check your answer by multiplying 12 by \frac{1}{6}.  The answer is \frac{12}{6} which is also equal to 2.

\frac{1}{3} ÷ 5

For this one, think of it as we have one big box divided into thirds. We want to divide each  \frac{1}{3} portion by 5. So you should have 5 tiny boxes in each \frac{1}{3} which gives you a total of 15 boxes.  But if we look at it as one big box divided into 15 parts, we know that each of those is \frac{1}{15}.  Check your answer by multiplying \frac{1}{15} by 5 and you get \frac{5}{15} which is equal to \frac{1}{3}.  

Let me know if you have any questions, and good luck!

3 0
2 years ago
The cup was filled at a constant rate. It started empty. After 2 seconds, it held 70 cm^3 of water.
nydimaria [60]

Answer:

About 90%

Step-by-step explanation:

If the cup was filled at a constant rate, then the cup fills at 70/2=35 cubic centimeters per second. The formula for the volume of a cone is \frac{1}{3} \pi r^2 h, or in this case \frac{112}{3}\pi cubic centimeters. After 3 seconds, the cup would have 35*3=105 cubic centimeters of water inside of it, or about 89.52% which rounds to 90%. Hope this helps!

8 0
3 years ago
The perimeter of a rectangular
cupoosta [38]

Answer:

5 ft

Step-by-step explanation:

Since we have a rectangle, we know for sure that perimeter = double the width and double the height. Algebraically, that looks like:

P = 2W + 2H

Let's sub in the given values, P and W:

18 = 2(4) + 2H

Now, let's solve for the height, H:

18 = 8 + 2H

10 = 2H

10/2 = H

<u>5 = H</u>

I hope this helps!

7 0
2 years ago
Solve x2 + 2x + 9 = 0
Keith_Richards [23]
x^2+2x+9=0 \\ \\&#10;a=1 \\ b=2 \\ c=9 \\ b^2-4ac=2^2-4 \times 1 \times 9=4-36=-32 \\ \\&#10;x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-2 \pm \sqrt{-32}}{2 \times 1}=\frac{-2 \pm \sqrt{-16 \times 2}}{2}=\frac{-2 \pm 4i\sqrt{2}}{2}=-1 \pm 2i\sqrt{2}

The answer is D.
8 0
3 years ago
Read 2 more answers
Find the answer to this problem 15/16 - -3 / 16​
posledela

Answer:

The answer would be 18/16 or 1 1/8.

4 0
3 years ago
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