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Leokris [45]
3 years ago
7

Complete the steps of the calculation to find the value of x​

Mathematics
2 answers:
alekssr [168]3 years ago
7 0

Answer:

99 + x = 4x

99 = 3x

x =33

.....

Ludmilka [50]3 years ago
5 0
99 degrees + x = 4x
Because 99 degrees angle + angle x is vertical to 4x angle. That makes them congruent.
99+x=4x
Subtract x from both sides:
99=3x
Divide 3 to both sides
x=11
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How many solutions exist for the given equation? 3(x+10)+6=3(x+12)
Helen [10]
<span>3x+30+6=3x+36</span>

<span>⇒3x+36=3x+36</span>

<span>⇒3x−3x=36−36</span>

<span>⇒0⋅x=0 
</span>infinite solutions of <span>x </span><span> for all </span><span> x∈<span>R
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6 0
3 years ago
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If 3m = 19 - n and 2m + 5n = 30, then what is the value of m?
nexus9112 [7]

Answer:

m=5

Step-by-step explanation:

We can solve this by using a system of equations. The easiest way to solve this is by using substitution.

3m=19-n       Subtract both sides by 19 to find n.

<u>-19  -19</u>

3m-19=-n      Divide everything by -1 to make n positive.

<u>/-1        /-1</u>

n=-3m+19

Now, we can substitute n into the second equation.

2m+5(-3m+19)=30    Substitute (-3m+19) into n.

2m-15m+95=30       Simplify.

-13m+95=30              Simplify and subtract both sides by 95.

        <u>-95 -95</u>

-13m=-65                    Divide both sides by -13.

<u>/-13    /-13</u>

m=5

We don't need to solve for n at all, so that is the answer!

Hope this helps, and have an amazing day ♥

8 0
3 years ago
A bag contains 240 marbles that are either red, blue, or green. The ratio of red to blue to green marbles is 5:2:1. If one-third
Andrej [43]

The fraction of the remaining marbles in the bag will be blue is 6/17.

<h3>What fraction of the remaining marbles in the bag will be blue?</h3>

The first step is to determine the initial number of marbles in the bag:

Initial number of red marbles in the bag : (5/8) x 240 = 150

Initial number of blue marbles in the bag : (2/8) x 240 = 60

Initial number of green marbles in the bag : 240 - 150 - 60 = 30

Number of red marbles remaining after 1/3 is removed = (1 - 1/3) x 150

2/3 x 150 = 100

Number of green marbles remaining after 2/3 is removed = (1 - 2/3) x 30

1/3 x 30 = 10

Total number of marbles now in the bag : 100 + 10 + 60 = 170

Fraction of blue marbles = 60 / 170 = 6/17

To learn more about ratios, please check: brainly.com/question/9194979

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7 0
2 years ago
Shawn wanted to model the number 13,450 using 13,450 using base-ten blocks how many large cubes, flats, and longs does he need t
Alex17521 [72]

Answer:

See attached

Step-by-step explanation:

13450 = 13000 + 400 + 50

  • 13*1000  = 13 large cubes
  • 4*100      = 4 flats
  • 5*10        = 5 longs

6 0
3 years ago
Ellie ran 4x + 5 miles today and 3x – 2 miles
kompoz [17]

Answer:

4

Step-by-step explanation:

4x+5+3x-2=31

7x+3=31

7x=28

x=4

5 0
3 years ago
Read 2 more answers
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