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velikii [3]
3 years ago
11

Which expression is equivalent to 9q2-(3q - 7) +5q?? ) ? 3

Mathematics
1 answer:
lesantik [10]3 years ago
3 0

9q^2-(3q - 7) +5q= \\\\=9q^2-3q + 7 +5q= \\\\=9q^2+2q + 7

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Help pleaseee what are the answers to these questions??
WARRIOR [948]

huhhhhh where is the question

5 0
3 years ago
21 increased by twice Gail's height<br> Use the variable g to represent Gail's height.
dmitriy555 [2]

The expression represented by 21 increased by twice Gail's height is 21 + 2g

<h3>What are expressions?</h3>

Expressions are mathematical statements that are represented by variables, coefficients and operators

<h3>How to translate the algebraic expression?</h3>

The expression is given as

21 increased by twice Gail's height

Where

g represents Gail's height

So, we have

21 increased by twice Gail's height ⇒ 21 increased by twice g

Twice means 2*

So, we have

21 increased by twice Gail's height ⇒ 21 increased by 2g

increased by means +

So, we have

21 increased by twice Gail's height ⇒ 21 + 2g

Hence, the expression represented by 21 increased by twice Gail's height is 21 + 2g

Read more about expressions at

brainly.com/question/22019327

#SPJ1

6 0
10 months ago
Helene invested a total of $1,000 in two simple-interest bank accounts. One account paid 5% annual interest; the other paid 8% a
crimeas [40]

a  =  total amount invested at 5%

b = total amount invested at 8%

we know 5% was earned in interest from "a", so that'd be (5/100) * a or 0.05a.

we know 8% was earned in interest from "b", so that'd be (8/100) * a or 0.08b.

we also know that the total for both is 1000, a + b = 100.

\begin{cases} a + b = 1000\\ 0.05a+0.08b=65 \end{cases}\qquad \qquad \stackrel{\textit{since we know}}{a+b=1000}\implies b = 1000-a \\\\\\ \stackrel{\textit{substituting on the 2nd equation}}{0.05a+0.08(100-a)=65}\implies 0.05a+80-0.08a=65 \\\\\\ -0.03a+80=65\implies -0.03a=-15\implies a=\cfrac{-15}{-0.03}\implies \boxed{a = 500} \\\\\\ \stackrel{\textit{we know that}}{b = 1000-a}\implies b=1000-500\implies \boxed{b = 500}

7 0
2 years ago
Read 2 more answers
Pattern in 6, 7, 13, 20, ?
Len [333]
This is a Fibonacci sequence:

6, 7, 13, 20, 33, 53, 86, 139, 225, ...
3 0
2 years ago
The length of a rectangle is twice its width. if the area of the rectangle is 162 m2 , find its perimeter.
polet [3.4K]
L = 2W
A = L * W
A = 162

162 = 2W(W)
162 = 2W^2
162/2 = W^2
81 = W^2
sqrt 81 = W
9 = W

L = 2W
L = 2(9)
L = 18

P = 2(L + W)
P = 2(18 + 9)
P = 2(27)
P = 54 <===== perimeter is 54 m
6 0
3 years ago
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