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Charra [1.4K]
2 years ago
5

20 = 7x + 2 - 4x What does x equal

Mathematics
2 answers:
saveliy_v [14]2 years ago
5 0

Answer:

x = 6

Step-by-step explanation:

20 = 7x + 2 - 4x

7x + 2 - 4x  = 20    (switch the sides)

7x - 4x + 2 = 20     (group the like terms together)

3x + 2 = 20            (add similar numbers, in this case it's the both x's)

    -2     -2              (subtract 2 on both sides)

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

3x = 18

/3     /3                   (divide both sides by 3)

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

x = 6

Alina [70]2 years ago
4 0
The answer is 6 put it in to double check tho
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Need help with this asap. This question confuses me​
Softa [21]

Answer:

<HKJ = 90

<FKG = 42

<FKJ = 138

<IKJ = 42

<FKH = 132

<GKI = 138

Step-by-Step :

<GKH , <HKI , and <IKJ all make up a line.  A line is 180 degrees.

90 + 48 = 138    180 - 138 = 42   <IKJ = 42

<FKG is a vertical angle to <IKJ.  Vertical angles are congruent.

<FKG = 42

<FKG and <FKJ make up a line.  A line is 180 degrees.

180 - 42 = 138    <FKJ = 138

Hope this helps.

7 0
2 years ago
3a+20=-25 what is the value of a?
frez [133]
3a+20=-25

Subtract 20 from both sides
3a=-45

Divide both sides by 3
a=-15

Final answer: a=-15
8 0
3 years ago
Read 2 more answers
The perimeter of an equilateral triangle is 27 centimeters. Find the altitude of the triangle
Alinara [238K]
9^2 = 4.5^2+b^2
81=20.25+b^2
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6 0
3 years ago
How do you find the average rate of change in calculus?
Thepotemich [5.8K]
The <em>average</em> rate of change doesn't require calculus.
It's just
           
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You need calculus when you want the <em>instantaneous</em> rate of change . . .
that's the rate of change at a single point in time.
8 0
3 years ago
A forest covers 33,000 acres. A survey finds that 0.8% of a forest is old-growth-tree. How many acres of old-growth-trees are th
natali 33 [55]

Answer:

264 acres

Step-by-step explanation:

Since 33,000 acres is 100%, 330 acres is 1% because 33000 acres divided by 100 is 330 acres. Then if 330 acres is 1%, 33 acres is 0.1% because 330 acres divided by 10 is 33 acres. 1 divided by 10 is 0.1.

Next 33 acres times 8 because 0.8% is eight times bigger than 0.01%. This equals to 264 acres.

5 0
2 years ago
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