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KIM [24]
2 years ago
10

From the set {0, 1, 15}, use substitution to determine which value of makes the equation true.

Mathematics
1 answer:
DanielleElmas [232]2 years ago
6 0

Answer:

b = 0.

Step-by-step explanation:

The only value for b that makes the equation true is 0. So, the equation has a unique solution of b = 0.

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Ana can finish a certain job in 10 hours. Together, Ana and Nina can finish the same job in 3 hours. How many hours can Nina fin
Over [174]

Answer:   4.5 hours

<u>Step-by-step explanation:</u>

Ana: \dfrac{1}{10}\ \text{job per hour}\\\\Nina: \dfrac{1}{x}\ \text{job per hour}\\\\Together: \dfrac{1}{3}\ \text{job per hour}\\\\\\Ana + Nina = Together\\\dfrac{1}{10}\quad +\dfrac{1}{x}\quad =\quad \dfrac{1}{3}\\\\\\\dfrac{1}{10}(30x)+\dfrac{1}{x}(30x) =\dfrac{1}{3}(30x)\\\\\\\rightarrow\quad 3x+30=10x\\\\.\quad 3x+30=10x\\\underline{-3x\qquad \quad -3x\quad}\\.\qquad \quad 30=7x\\\\.\qquad \quad \dfrac{30}{7}=\dfrac{7x}{7}\\\\\\.\qquad \quad \dfrac{30}{7}=x

.\qquad \quad 4.5=x

5 0
3 years ago
How do you do this?
Alenkasestr [34]

Answer:

by increasing the size ez

4 0
3 years ago
Help plz
Sidana [21]
First find the amount of containers:
6.3 kg/0.35 kg
=18 containers

Now we can find the amount of money earned:
18 containersx$2.99
=$53.82

Bella will earn $53.82 if she sells all the containers.
6 0
3 years ago
Read 2 more answers
Kerri went shopping for her birthday party and bought seven 2-liter bottles of soda. If only five bottles of soda were consumed
alexira [117]

Answer:

4 liters

Step-by-step explanation:

2 bottles of soda are left

each bottle of soda has 2 liters

so 2 x 2 =4

7 0
3 years ago
What is 9m + 2 = 3m - 10
cupoosta [38]
9m+2=3m-10
subtract 3m from both sides to get:
6m+2=-10
subtract 2 from both sides to get:
6m=-12
finally, divide by 6 on both sides to get what m equals:
m=-2
7 0
3 years ago
Read 2 more answers
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