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Anni [7]
3 years ago
6

5 + 4x - 2x = 8x + 11 + 12 Explain step by step PLEASE

Mathematics
2 answers:
mario62 [17]3 years ago
6 0
Simplify
5
+
4
x
−
2
x
5+4x−2x to
5
+
2
x
5+2x.
5
+
2
x
=
8
x
+
11
+
12
5+2x=8x+11+12

2 Simplify
8
x
+
11
+
12
8x+11+12 to
8
x
+
23
8x+23.
5
+
2
x
=
8
x
+
23
5+2x=8x+23

3 Subtract
5
5 from both sides.
2
x
=
8
x
+
23
−
5
2x=8x+23−5

4 Simplify
8
x
+
23
−
5
8x+23−5 to
8
x
+
18
8x+18.
2
x
=
8
x
+
18
2x=8x+18

5 Subtract
8
x
8x from both sides.
2
x
−
8
x
=
18
2x−8x=18

6 Simplify
2
x
−
8
x
2x−8x to
−
6
x
−6x.
−
6
x
=
18
−6x=18

7 Divide both sides by
−
6
−6.
x
=
−
18
6
x=−
6
18
​


8 Simplify
18
6
6
18
​
to
3
3.
x
=
−
3
x=−3
Yuliya22 [10]3 years ago
4 0

Answer:

The solution is x = -3

Step-by-step explanation: Please brainliest!

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-Dominant- [34]

Answer:

(1,2)

Step-by-step explanation:

The solution to the system is where the two lines cross.

They cross at x=1 and y=2

(1,2)

8 0
3 years ago
a triangle pyramid with an equilateral base has a side length of 10 centimeters and a surface area of 214.5 square meters. find
sweet [91]
Area of the base = 1/2 * 10 *  5sqrt3 =  25 sqrt3

Total surface area = 25 sqrt3 + 3 *  1/2 * 10 * slant height = 214.5

25 sqrt3 + 15h = 214.5
15h = 214.5 - 25 sqrt3

h =   (214.5 - 25sqrt3() / 15

=  11.41 cm to nearest hundredth
6 0
4 years ago
Please help me I will give brainliest<br> y=-4 <br> 3x-5y=23
Blababa [14]

Answer:

Step-by-step explanation:

3x-5(-4)=23      (1,-4)

3x+20=23

-20

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x=1

6 0
3 years ago
A. Let a, b, c be positive integers and suppose that
kodGreya [7K]

Answer:

Step-by-step explanation:

a|c means that c=a*k k is some positive integer. We know that b|c so b| ak and (a,b)=1, so it must be b|k, i.e k=b*r, r is some positive integer number. Now we have that c=abr, so ab| c.

B) if x and x’ are both solution then we have that

mi | x-x’ for every i.

By a) we have that m1m2...mk| x-x’, so x and x’ are equal by mod od m1m2...mk.

5 0
3 years ago
Find the next two terms in this<br> sequence.<br> 1, 2, 6, 24, 120, [?],[]
Bogdan [553]

1x1=1

1x2=2

2x3=6

6x4=24

24x5=120

120x6=720

720x7=5040

the answer is 720 and 5040

4 0
3 years ago
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