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Sindrei [870]
2 years ago
8

Plz help. will mark brainliest.

Mathematics
1 answer:
Andrej [43]2 years ago
8 0
Estimation can be very useful because when we do not know the actual correct answer we can just estimate. Estimation helps you check your answer by seeing if the estimate is close to the result you got. You can also estimate first to know approximately what result you should expect to get.
You might be interested in
Which expression is equivalent to Assume x > 0 and y 0.
Svetach [21]

we have

\sqrt{\frac{55x^{7}y^{6}}{11x^{11}y^{8}}}

we know that

\sqrt{\frac{55x^{7}y^{6}}{11x^{11}y^{8}}} =\sqrt{\frac{55}{11}\frac{x^{7}}{x^{11}}\frac{y^{6}}{y^{8}}} \\ \\= \sqrt{\frac{5}{x^{4} y^{2}}} \\ \\ =\frac{\sqrt{5}}{x^{2} y}

therefore

<u>the answer is</u>

The expression equivalent is  \frac{\sqrt{5}}{x^{2} y}

3 0
2 years ago
Read 2 more answers
How many electrons are in the nucleus of an atom with an atomic number of 7?
bekas [8.4K]
There are only 5 in the nucleus of an atom
8 0
2 years ago
What are the solutions to the equation? x^2+6x = 40.
GaryK [48]

Answer:

x = 4, -10

Step-by-step explanation:

Find the zeros of the equations.

Solve the equation:

x^2 + 6x = 40

Subtract -40 from both sides.

x^2 + 6x - 40 = 0

Factor the equation.

(x - 4)(x + 10)

Solve for x with the given information by equaling it to 0.

x - 4 = 0

Add 4 to both sides

x = 4

x + 10 = 0

Subtract 10 from both sides

x = -10

This means that our x values are:

x = 4, -10

6 0
3 years ago
The side length of a square can be expressed as
gladu [14]

Answer:

x = 59 square meters

Step-by-step explanation:

To find x, you must first eradicate the 3 so you can divide. Subtract 3 from both 3 and 121. This should leave you with 118. Then, divide 118 by 2. This will leave you with 59 square meters.

1. 2x + 3 = 121

2. 2x + 3 - 3 = 121 - 3

3. 2x = 118

4. 2x/2 = 118/2

5. x = 59 units

3 0
2 years ago
2 1/4 is equal to what percent?
Margarita [4]

Answer:


Step-by-step explanation:

first convert 2 1/4 into improper fraction

9/4 into percent=2.25percent is the answer

thanxxxxx


3 0
3 years ago
Read 2 more answers
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