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3 years ago

Which of the following is the solution set of the radical equation?

Mathematics

2 answers:

Alisiya [41]3 years ago

7 0

Answer: D
square the expression to get rid of the root, so you will get:
9= x+1
x=8

tatuchka [14]3 years ago

3 0

Answer:

d. (8)

Step-by-step explanation:

3 = √(x + 1)

3 = √(8 + 1)

3 = √9

3 = 3

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Genevieve uses 6.5 pints of blue paint and white paint to paint her bedroom walls. 1 4 of this amount is blue paint, and the res

natka813 [3]

Answer:

3/4 = 16/x. Step-by-step explanation: Set up the original ratio: 3:4 (a.k.a. 3/4 or 3 to 4) Because 16 correlates to red paint and 3 correlates to red paint the will be in the same location (as the numerator or denominator).. Also, the amount of blue paint is unknown so that is x.4 also represents blue paint, so 4 and x will also be on the same level (as the numerator of denominator).

Step-by-step explanation:

3 0

3 years ago

4.Is it sometimes, always, or never true that, if A and B both have dimensions n x n , AB=BA ? Explain.

REY [17]

Answer: Is true sometimes.

Step-by-step explanation:

I guess that here we have two matrices, A and B, that are nxn.

We can see that if those matrices can conmutate, then we can try it with some simple matrices.

$A = \left[\begin{array}{ccc}1&0\\0&-1\end{array}\right] . B = \left[\begin{array}{ccc}2&0\\1&1\end{array}\right]$

Here, we would have that:

$AB = \left[\begin{array}{ccc}2&0\\-1&-1\end{array}\right]$

$BA = \left[\begin{array}{ccc}2&0\\1&-1\end{array}\right]$

You can see that AB and BA are different, then the statement is not always true.

But it is true sometimes, if A or B are the identiti, then I*A = A*I, in this case would be true.

It is also true if A and B are diagonal matrices, let's prove it:

$A = \left[\begin{array}{ccc}a&0\\0&b\end{array}\right] , B = \left[\begin{array}{ccc}c&0\\0&d\end{array}\right]$

$AB = \left[\begin{array}{ccc}ac&0\\0&bd\end{array}\right] = BA$

5 0

4 years ago

What are the partial products of 4.6 x 3.5?

Studentka2010 [4]

The partial products are 210 and 1350 in decimal it's 21.0 and 135.0.

Hope that heled:)

5 0

3 years ago

Read 2 more answers

What digits can be in the ones place of a number that has five as a factor?

choli [55]

There can be 0s and 5s

7 0

4 years ago

Do I write the equation y=mx+b

HACTEHA [7]

Steps:
1. 6x=4y + 7
2. You have to write it in slope intercept to get the slope and y-intercept.
3. Subtract 7 on both sides
4y= 6x-7
4. Divide everything by 4
5. Y= 3/2x + -7/4
6. Slope= 3/2 y-intercept= -7/4

6 0

3 years ago