All categories

2 years ago

What is the exact value for the expression √52-√13+√117? Simplify if possible.

Mathematics

1 answer:

Aleksandr-060686 [28]2 years ago

8 0

√52-√13+√117

sqrt (4*13) - sqrt (13) + sqrt (13*9)

sqrt(4)sqrt(13) -sqrt(13)+sqrt(13)sqrt(9)

2sqrt(13) -sqrt(13)+3sqt(13)

sqrt(13)[2-1+3]

4sqrt(13)

Choice A

You might be interested in

It’s a yes or no question<br> !!!!!!!!!!!!<br> For math

vesna_86 [32]

I’m confused on what the question is exactly

5 0

2 years ago

The length of a concrete slab is three more than three times the width. It's area is 330 square feet. What is the length of the

marin [14]

Answer:

Width: 10.5 feet

Length: 31.5 feet

Step-by-step explanation:

Let x represent width of the concrete slab.

We have been given that the length of a concrete slab is three more than three times the width. So length of the slab would be $3x$ .

We are also told that the area of slab is 330 square feet. We can represent this information in an equation as:

$x\cdot 3x=330$

$3x^2=330$

$x^2=\frac{330}{3}$

$x^2=110$

Now, we will take square root of both sides.

$\sqrt{x^2}=\sqrt{110}$

$x=10.488\approx 10.5$

Therefore, the width of slab is approximately 10.5 feet.

The length of the slab would be $3x\Rightarrow3(10.5)=31.5$ .

Therefore, the length of slab is approximately 31.5 feet.

6 0

3 years ago

Read 2 more answers

How do u express a ratio as a decimal

Viktor [21]

Perform the indicated division ... divide the numerator by the denominator.
The quotient is the decimal form of the ratio.

6 0

3 years ago

What is the answers to <br>8x-2-5x+7=

Ludmilka [50]

Answer: 3x +5

Step-by-step explanation:

Group the variables first 8x-5x is 3x. Then look at the numbers -2+7 is 5.

You can't combine letters and numbers so it's as far as you can go.

3 0

3 years ago

The image of the point (4, -9) under a translation is (9, -14). Find the coordinates

lilavasa [31]

9514 1404 393

Answer:

(-4, -13)

Step-by-step explanation:

When the translation (T) is added, the image is formed.

(4, -9) +T = (9, -14)

T = (9, -14) -(4, -9) = (9-4, -14-(-9)) = (5, -5)

The same holds for the second point:

(-9, -8) +T = (-9, -8) +(5, -5) = (-9 +5, -8 -5) = (-4, -13)

The image of the second point under the same translation is (-4, -13).

6 0

3 years ago