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Alja [10]
3 years ago
10

PLEASE HELP FAST!!!! 20 POINTS!!!! 80 + 10x = 0 + 20x Show work, please!!!

Mathematics
2 answers:
Alika [10]3 years ago
4 0

Answer:

x=8

Step-by-step explanation:

80+10x=0+20x

you have to subtract 20 from ten which is 10 and then you devide 80 by 10x which is x=8

Alex777 [14]3 years ago
3 0

Answer:

x=8

Step-by-step explanation:

80 + 10x = 20x

        -10x   -10x

subtract 10 x from both sides (always do to both sides)

80=10x

divide both sides by 10

80/10 = 8

10x/10 = x

x=8

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What can 45/8 be simplified down to?
Alenkinab [10]
Eight goes into 45, 5 times so it would be 5 and 5/8.
5 0
3 years ago
3 multiply by 11 upon 7
Paha777 [63]

Answer:

what exactly is the question?

Step-by-step explanation:

5 0
3 years ago
Identify the values that should be written to complete the X diagram.
cestrela7 [59]

Answer:

See the attachment for what goes on your X diagram.

Rewrite: x² -7x +4x -28

Grouping: (x² -7x) +(4x -28) = x(x -7) +4(x -7) = (x +4)(x -7)

Step-by-step explanation:

The given quadratic is ...

... x² -3x -28 . . . . . a=1, b=-3, c=-28

a) The value at the top of the X diagram is the product a·c = 1·(-28) = -28.

The value at the bottom of the X diagram is the coefficient b = -3.

The values on the sides of the diagram are the factors of -28 that add up to make -3. These are -7 and 4. That is, ...

(-7)·(4) = -28

(-7)+(4) = -3

b) Since the two values on the sides of the diagram add up to give "b", the value of "b" in the equation can be rewritten as the sum of these two numbers. Doing that, we have ...

... x² -3x -28

... = x² +(-7+4)x -28

... = x² -7x +4x -28 . . . . . . order does not matter. It could also be x² +4x -7x -28

c) We can group pairs of terms in the rewritten expression and factor each pair.

... = (x² -7x) +(4x -28) . . . . . first pair has a common factor of x; second pair, 4

... = x(x -7) +4(x -7) . . . . . . . these terms now have a common factor: (x -7)

... = (x +4)(x -7) . . . . . . . . . . the complete factorization of x² -3x -28

3 0
3 years ago
Find the value of each variable. Write an<br> equation then solve showing ALL the work<br> A2x+10°
AveGali [126]

Answer:

x = 25

Step-by-step explanation:

The three straight lines in the sides of the triangle means that ALL 3 SIDES ARE EQUAL.

This is an equilateral triangle. So all 3 angles are equal.

We know sum of 3 angles in a triangle is 180. Since 3 of the angles are equal, each angle is:

180/3 = 60

The top angle is given as "2x + 10", thus we can say "2x + 10" is equal to 60 degrees. Now we equate and solve for x:

2x+10=60\\2x=60-10\\2x=50\\x=\frac{50}{2}\\x=25

The value of x is 25

4 0
3 years ago
Which of the following data sets has a range of 40?
jeka94

Answer:

The second answer - 40, 10, 20, 50

Step-by-step explanation:

Range is the difference between the largest and smallest number in a data set. The biggest and smallest numbers in the data set are 50 and 10, respectively. 50 - 10 = 40.

4 0
3 years ago
Read 2 more answers
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