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loris [4]
3 years ago
11

-4(1 -6b) - 5 ( 2b - 6)= 8b - 7b

Mathematics
2 answers:
Citrus2011 [14]3 years ago
5 0
The answer is b=-2  Hope that helps!!                           
aksik [14]3 years ago
4 0
-4(1-6b)-5(2b-6)=8b-7b

We move all terms to the left:

-4(1-6b)-5(2b-6)-(8b-7b)=0

We add all the numbers together, and all the variables

-4(-6b+1)-5(2b-6)-(+b)=0

We multiply parentheses

24b-10b-(+b)-4+30=0

We get rid of parentheses

24b-10b-b-4+30=0

We add all the numbers together, and all the variables

13b+26=0

We move all terms containing b to the left, all other terms to the right

13b=-26

b=-26/13

b=-2

You might be interested in
How to solve 7m + 2n = 21 and 10m + 4n = -10 using substitution. Step by step please and thank you!
ryzh [129]
7m+2n=21
-7m      -7m

<u>2n</u>=<u>21-7m</u> 
2        2

n=<u>21-7m
</u>       2
<u>
</u>10m+4(21-7m/2)= -10
<u />-10m                   -10m

4(21-7m/2)= -10-10m

(84-28m/2)= -10-10m
    x2                x2

84-28m    = -20-20m
+20+28m   +20+28m

<u>104</u> = <u>8m
</u>8         8

m=13

10(13) + 4n = -10
-130              -130

<u>4n</u> = <u>-140
</u>4         4
<u>
</u>n= -35

If anything is unclear please feel free to ask.
5 0
3 years ago
The figure shows a map of five streets that meet at Concord Circle. The measure of the angle formed by Melville Road and Emerson
Dovator [93]

Alright, lets get started.

Please refer the diagram I have attached.

The angle between Melville Road and Emerson Avenue is 119°.

Hawthorne Lane bisects the angle formed by Melville Road and Emerson Avenue.

So, angle between Hawthorne Lane and Emerson Avenue will be = \frac{1}{2} * 119 = 59.5°

Now, angle between Emerson Avenue and Thoreau Street is 135°.

Dickinson Drive bisects the angle formed by Emerson Avenue and Thoreau Street.

So, angle between Dickinson Drive and Emerson Avenue will be = \frac{1}{2} * 135 = 67.5°

So, the complete angle between Hawthorne Lane and Dickinson Drive will be = 59.5 + 67.5 = 127°

So, the answer is 127 °.   :    Answer

Hope it will help :)




4 0
3 years ago
500 tickets must be sold. 54 students have sold nine tickets each. How many tickets are left to be sold?
Leona [35]

Answer:

14 tickets. Equation form : 500- 486=x.

Step-by-step explanation:

Variables are always the unknown. What you don't know from the given information is the number of tickets left to be sold. 54*9=486. So x is equivalent to 500-486 aka 14

6 0
3 years ago
Read 2 more answers
Priya and han plan a fundraiser for the running club.
Lilit [14]

Answer:a

Step-by-step explanation:

6 0
3 years ago
Please help this is geometry and I am not quite sure how to solve this one
Lyrx [107]

Answer:

x = 1

y = 1.7

z = 60⁰

work:

z = 60 because the three angles add to 180⁰ and 180⁰ - 90⁰ - 30⁰ = 60⁰

in a 30-60-90 triangle, the hypotenuse is twice the length of the shorter leg, so x = 1.

the longer leg is the short leg * Sq rt of 3

Sq rt of 3 to the nearest tenth is 1.7, so 1.7 * 1 is still 1.7, so y = 1.7.

8 0
3 years ago
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