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3 years ago

Please help asap 50 points!

Mathematics

2 answers:

jeyben [28]3 years ago

5 0

Answer:

first to last second to middle and last to top

STatiana [176]3 years ago

4 0

√(6y) = √(36+2y)

Let's just solve it then match.

Squaring both sides; may introduce extraneous solutions.

6y = 36 + 2y

Adding -2y to both sides

4y = 36

Dividing both sides by 4

y = 9

Checking

√((6)(9))=√54

√(36+2(9)) = √54, good

Answer:

6y = 36 + 2y by the squaring property of equality

4y = 36 by the subtraction property of equality

y = 9 by the division property of equality

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When a cylindrical tank is filled with water at a rate of 22 cubic meters per hour, the level of water in the tank rises at a ra

Sergeu [11.5K]

Answer:

$r=\sqrt{10}\text{ m}$

Step-by-step explanation:

We have been given that when a cylindrical tank is filled with water at a rate of 22 cubic meters per hour, the level of water in the tank rises at a rate of 0.7 meters per hour. We are asked to find the approximate radius of tank in meters.

We will use volume of cylinder formula to solve our given problem as:

$V=\pi r^2h$ , where,

r = Radius,

h = Height of cylinder.

Since the level of water in the tank rises at a rate of 0.7 meters per hour, so height of cylinder would be $h = 0.7$ meters at $V=22\text{ m}^3$ .

Upon substituting these values in above formula, we will get:

$22\text{ m}^3=\frac{22}{7}\cdot r^2(0.7\text{ m})$

$22\text{ m}^3=\frac{22}{10}\cdot r^2\text{ m}$

$\frac{10}{22}\cdot\frac{22\text{ m}^3}{\text{m}}=r^2$

$r^2=\frac{10}{22}\cdot\frac{22\text{ m}^3}{\text{m}}$

$r^2=10\text{ m}^2$

Now, we will take positive square root of both sides as radius cannot be negative.

$\sqrt{r^2}=\sqrt{10\text{ m}^2}$

$r=\sqrt{10}\text{ m}$

Therefore, radius of tank would be approximately square root of 10 m.

5 0

3 years ago

Which comparisons are true? Choose all that apply. A. 7.34 > 7.304 B. 1.628 > 1.63 C. 4.05 < 4.055 D. 9.103 < 9.13 E

Nimfa-mama [501]

Answer:

The answers are A, C, & D.

Step-by-step explanation:

A: the 34 would have an imaginary 0 behind it, so then it would become 340, which is greater than 304.

B, C, D: same logic as A

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3 years ago

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Shtirlitz [24]

Y=-5.11111 how I solved it is in the picture attached

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3 years ago

What is the exact decimal equivalent of 7 half’s 12

Ivenika [448]

The decimal equivalent of 7 half’s is the number in decimal form

The exact decimal equivalent of 7 half’s is 3.5

<h3>What is a decimal number?</h3>

A decimal number is a number represented by an integer and a fractional part

<h3>How to determine the decimal equivalant?</h3>

The number is given as:

7 halves

Express as product

7 * 1/2

Evaluate the product

3.5

Hence, the exact decimal equivalent of 7 half’s is 3.5