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Tpy6a [65]
3 years ago
13

Two water tanks are shown. Tank A is a rectangular prism and Tank B is a triangular prism. Tank A is filled with water to the 6-

meter mark. Some of the water from Tank A is being transferred to Tank B so that the water level in Tank A is at 2 meters.
Shade the amount of water in Tank B to indicate the approximate height of the water in Tank B after the transfer.
Mathematics
1 answer:
jonny [76]3 years ago
8 0

Answer:

This answer is A

Step-by-step explanation:

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3. A positive number is 56 less than its square. Find the number.
raketka [301]

Answer:8

Step-by-step explanation:

X+56=x^2

X^2-x-56=0

X^2-8x+7x-56=0

X(x-8)+7(x-8)=0

(X+7)(x-8)=0

X+7=0 or x-8=0

X=-7 or x=8

4 0
4 years ago
Which transformation would not carry a square onto itself?
Helga [31]

Answer:

Translation because translation is sliding an object.

7 0
4 years ago
A circle is centered O (0,0) and has the radius 3.46410161514 where does poing M (-3,2) lie​
larisa [96]

The circle area can be defined as x2 + y2 < 3.46^2.

For point M, x2 + y2 = 13.

Since 3.46^2 is about 12, point M is outside the circle!

6 0
3 years ago
Read 2 more answers
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Reptile [31]

Answer:

1 34

2 45

3 23

Step-by-step explanation:

8 0
3 years ago
The standard deviation of test scores on a certain achievement test is 11.3. If a randomsample of 81 students had a sample mean
Svetradugi [14.3K]

Answer: (72.535, 76.665)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

, where \sigma = population standard deviation.

n= Sample size

\overline{x} = sample mean.

z^* = Critical z-value (two-tailed)

Given : \sigma=11.3

n= 81

\overline{x}=74.6

The critical values for 90% confidence interval : z^*=\pm1.645

Now, the confidence interval for population mean would be :

74.6\pm (1.645)\dfrac{11.3}{\sqrt{81}}\\\\=74.6\pm(1.645)(\dfrac{11.3}{9})\approx74.6\pm2.065\\\\=(74.6-2.065,\ 74.6+2.065)\\\\=(72.535,\ 76.665)

Hence, a 90 percent confidence interval estimatefor the average score of all students. : (72.535, 76.665)

8 0
3 years ago
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