MATHEMATICS MIDDLE SCHOOL

Solve for x.
3(x)+10= 2x3+2x6

Answers

Answer 1
Answer:

°°° Let's see -

Solve for x - BUT, before we do that, I want to look at the right side of the equal sign: I believe the 'x' on the right side '2 x 3 + 2 x 6' is actually a multiplication sign, so we'll replace that with a proper x so that we don't get confused.

°°° Rewrite the equation -

3 (x) + 10 = 2 × 3 + 2 × 6

°°° Simplify both sides of the equation -

3x + 10 = (2) (3) + (2) (6)

°°° Simplify again (Yes, again) -

3x + 10 = 6 + 12

3x + 10 = (6 + 12)  (Combine Like Terms)

3x + 10 = 18

°°° Subtract 10 from both sides -

3x + 10 - 10 = 18 - 10

3x = 8

°°° Divide both sides by 3 -

3x / 3 = 8 / 3

x = 8 / 3

°°°FINAL ANSWER°°° -

x = 8 / 3

↑    ↑    ↑  Hope this helps! :D

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Answers

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three times the sum of a number and 4 is 8 less then one-half the number .write and solve an equation to find the number

Answers

3(x + 4) = x/2 - 8

First, we can multiply both sides by 2:

6(x+4) = x - 16

6x + 24 = x - 16

Isolate x:

5x = -16 - 24

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Audrey drove 200 miles in 3.5 hours. Which equation can be used to find the rate "r" at which Audrey was traveling? (A) 200=3.5r
(B) 200x3.5=r
(C) r/3.5=200
(D) 200r=3.5

Answers

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The volume of a cylinder, found using 3.14 to approximate pi, is 50,240 cm3. The radius of the cylinder is 40 cm.What is the height of the cylinder?



Express your answer as a whole number.

Answers

V=hpir^2
pi=3.14 for this quesiton
v=50240
r=40
subsitute and solve
50240=h(3.14)(40^2)
50240=h(3.14)(1600)
50240=h(5024)
divide both sides by 5024
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answer is height=10cm



What is 5d=470 and what is 8a=47

Answers

5d=470:

in this case we have to divide both sides by 5:

d=94

8a=47:

in this case we have to divide both sides by 8:

a=5.875

as a general rule, if you want to find out a value of a in
ab=c

you have to divide both sides of the equation by b (if it's not zero); then you will have left:

a=c/b

and if you calculate c/b, this will give you the answer
5d= 470 \n \n d=470:5 \n \n \boxed{\boxed{d= 94}} \n \n 8a=47 \n \n a=47:8 \n \n \boxed{\boxed{a=5.875}}

Jennifer it's two pennies 105 times how many times can expect both going to come up heads

Answers

Jennifer has two pennies. She flips both pennies 105 times each. How many times can she expect both pennies to come up heads simultaneously?

Assuming I have correctly interpreted your question,
The probability both coins come up heads is (1)/(2) * (1)/(2) = (1)/(4)
Thus the expected number of simultaneous heads is 105/4 or 26.25
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