MATHEMATICS MIDDLE SCHOOL

ANYONE get this?? HElp if you can!!Solve each given equation and show your work. Tell whether it has one solution, an infinite number of solutions, or no solutions, and identify each equation as an identity, a contradiction, or neither. a) -2x + 16 + 5x = 9x + 20 - 6x - 4
b) 3x – 14 + 4x = 30 + 5x
c) 2x + 6 = -x + 10 + 3x – 4

Answers

Answer 1
Answer:

Answer:

A) Any value of  x  makes the equation true.  All real numbers  Interval Notation:  (−∞,∞)

B) Isolate the variable by dividing each side by factors that don't contain the variable.  x  =  22

C) Any value of  x  makes the equation true.  All real numbers  Interval Notation:  ( −∞,∞)

A and C are identities and have infinite solutions, while B is neither, and has one solution.

Step-by-step explanation:
Answer 2
Answer:

Step-by-step explanation:

-2x+5x-9x+6x=20-4-16

-3x=0

x=0+3=3

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A calculator is tightly wrapped in protective padding. It is sold in a box that is 14.5 cm wide,24.0 cm long, and 6.0 cm high. The calculator itself is 8.5 cm wide, 18 cm long, and 2.5 cm high. What is the volume of the padding?

Answers

volume of padding = volume of box - volume of calculator
                              =  (14.5 x 24 x 6)  -  (8.5 x 18 x 2.5)
answer = 1705.50 cm^3

In a fifth grade class 4/5 of the girls have brown hair 3/4 of them have Long hair what fraction have Long brown hair

Answers

Answer:

(3)/(5)

Step-by-step explanation:

We have that,

Fraction of girls having brown hair = (4)/(5)

Fraction of girls having long hair = (4)/(5)

Thus, the fraction of girls having long brown hair = Fraction having brown hair × Fraction having long hair

i.e. Fraction of girls having long brown hair = (4)/(5)* (4)/(5)

i.e. Fraction of girls having long brown hair = (3)/(5)

Hence, the fraction of girls having long brown hair is  (3)/(5).
ANSWER: 12/20 or 3/5

4/5 of girls have brown hair
3/4 have long hair

(4)/(5) * (3)/(4) = (12)/(20)
(12)/(20) / (4)/(4) = (3)/(5)

20000 is 1/10 of what number

Answers

I will write your question as an equation:

20 000 =1/10*x

and we need to find the x. For this, we multiply both sides by 10:

200 000 =x

so the answer is 200 000

Write a description of how a diagram can help you solve 2×40

Answers

Two multiplied by forty equals eighty. 2x40=80
Squares maybe, do 40 across 2 down to form a rectangle add them up then it will give you 40*2

HELP ME PLEASE! I'll give 10 points to someone who answer the correctly.Laura paddles in her canoe at a speed of 6 mph for 6 miles. She then hops on her windsurfer and sails for 6 miles at a speed of 6 mph. For how long does Laura travel?
A.2 hours
B.3 hours
C.36 hours

Answers

She traveled a total of 12 miles, going 6 mph the whole time. The answer is 2 hours, because it would take her 2 hours to travel 12 hours. 
 
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One hour in the canoe and one hour on the windsurfer.

I have 3 hundreds,17 tens,13 ones,1 tenths,and 2 hundredths.what number am i?

Answers

3 hundreds equal to 300
17 tens equal to 170
13 ones equal to 13
1 tenths equal to 0.1
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 483.12 <---- The answer
If you have 3 hundreds, 17 tens, 13 ones, 1 tenths, and 2 hundreths, you have
103619.
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