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mojhsa [17]
3 years ago
11

Simplify the expression by combining like

Mathematics
1 answer:
viva [34]3 years ago
4 0

Answer:

Below

Step-by-step explanation:

First we combine your first set of terms,

7b^2 + 2b^2 = 9b^2

There's a subtraction hidden in there!

9b^2 - 3b^2 = 6b^2

Next we do the same thing for the second term,

3b + 7b = 10b

but there's a subtraction in the expression!

10b - b = 9b

Then we finish with our third term

6 + 5 = 11

Answer:

6b^2 + 9b + 11

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Solve the inequality:<br><br> 5x - 7 ≥ 3x + 9
erastova [34]

Answer:

x≥8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the root of this equation? <br>2x^2 - 4x + 9 = 0​
faust18 [17]

Answer:

x = 1 + i sqrt(7/2) or x = 1 - i sqrt(7/2)

Step-by-step explanation:

Solve for x:

2 x^2 - 4 x + 9 = 0

Divide both sides by 2:

x^2 - 2 x + 9/2 = 0

Subtract 9/2 from both sides:

x^2 - 2 x = -9/2

Add 1 to both sides:

x^2 - 2 x + 1 = -7/2

Write the left hand side as a square:

(x - 1)^2 = -7/2

Take the square root of both sides:

x - 1 = i sqrt(7/2) or x - 1 = -i sqrt(7/2)

Add 1 to both sides:

x = 1 + i sqrt(7/2) or x - 1 = -i sqrt(7/2)

Add 1 to both sides:

Answer:  x = 1 + i sqrt(7/2) or x = 1 - i sqrt(7/2)

4 0
3 years ago
Using the graph below, if f(x) = 4, find x.
Rina8888 [55]
3 I think is the answer
4 0
3 years ago
15.5 +6g HELP ME pleasee​
tatiyna

Answer:21.5

Step-by-step explanation:

Add

6 0
2 years ago
Can someone help with this qs pls?<br> 4 − (−4)^−3
11Alexandr11 [23.1K]

\huge \boxed{\mathbb{QUESTION} \downarrow}

  • Solve ⇨ 4 - (- 4)^-3

\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}

\sf \: 4 - ( - 4 ) ^ { - 3 }

Calculate -4 to the power of -3 and get -1/64.

\dashrightarrow \sf \: ( - 4) ^{3 }  \\  =   \sf-\frac{1}{4 ^{3} }  \\  =  \sf  - \frac{   1}{4}  \times  -  \frac{  1}{4}  \times   - \frac{  1}{  4}  \\  =  \sf \:   - \frac{  1}{64}

Come back to the equation & substitute -4³ as -1/64.

\sf \: 4-\left(-\frac{1}{64}\right)  \\

The opposite of -1/64 is +1/64.

\sf \: 4+\frac{1}{64}  \\

Add 4 and 1/64 to get 257/64 (take 64 as the LCM).

\boxed{ \boxed{ \bf\frac{257}{64}  = 4.01}}

4 0
2 years ago
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