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Drupady [299]
1 year ago
11

HELP!! Please answer 9 and ten with solution needed!!

Mathematics
1 answer:
sashaice [31]1 year ago
4 0

Answer:

m=7 z=-12

Step-by-step explanation:

expand brackets:

8m+24=5m+45

Change sides:

8m-5m=45-24

3m=21

<u>m=7</u>

<u />

<u>z-6</u>    =  <u>3</u>

2z         4

Coss multiply:

4z-24=6z

4z-6z=24

-2z=24

Divide both sides by -2:

z=-12

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Marie wants to know the most popular car for parents. She plans to survey the people entering the mall from 10:00 a.m. to 11:00
Andreyy89

Answer:

C. Marie should make sure she surveys both the fathers and mothers.

3 0
2 years ago
A scientist has two solutions, which she has labeled Solutuion A and Solution B. Each contains salt. She knows that Solutuion A
ratelena [41]

a = amount (in oz) of solution A

b = amount of solution B

The scientist wants a mixture of 110 oz, so

a + b = 110

Solution A consists of 65% salt, so each ounce of solution A contributes 0.65 oz of salt; similarly, each ounce of B contributes 0.9 oz. The mixture is supposed to consist of 75% salt, which amounts to 0.75 * (110 oz) = 82.5 oz of salt. So

0.65 a + 0.9 b = 82.5

Solve for a and b:

b = 110 - a

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0.65 a + 99 - 0.9 a = 82.5

0.25 a = 16.5

a = 66  ==>  b = 44

5 0
2 years ago
What are the coefficients in the polynomial 4x2 + 3x-3?
Ksenya-84 [330]

                   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

\diamond\large\blue\textsf{\textbf{\underline{\underline{Question:-}}}}

        What are the coefficients in the polynomial 4x²+3x-3?

\diamond\large\blue\textsf{\textbf{\underline{\underline{Answer and How to solve:-}}}}\diamond

<u>Coefficient:-</u>  A number before a variable

<u>Coefficients in this polynomial:-</u>

4 (the number before x²) and 3 (the number before x)

<h3 />

So we conclude that the right option is:-

\bigcirc\!\!\!\!\!\large\checkmark 4, 3 (Option B)

<h3>Good luck.</h3>

            - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

4 0
2 years ago
The sum of one and the product of one and a number x
Annette [7]

1 + 1x

OR

1 + x

They mean the same thing! Hope this helps!

7 0
3 years ago
Read 2 more answers
The population of a local species of beetle can be found using an infinite geometric series where a1 = 880 and the common ratio
nasty-shy [4]
<span>Data:

infinite geometric series

A1 = 880

r = 1 / 4

The sum of a geometric series  in sigma notation is:

  n              1 - r^n
 ∑ Ai = A ----------- ; where A = A1
i = 1             1-r

 When | r | < 1 the infinite sum exists and is equal to</span><span><span>:

  ∞               A
 ∑ Ai =   ---------- ; where A = A1
i = 1          1 - r</span>

So, in this case</span><span><span>:

  ∞               880
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i = 1         1 - (1/4)</span>  </span>

Answer: 1173 and 1/3
6 0
3 years ago
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