All categories

3 years ago

2(4x+1) - 5x + 2 = 3x + 4 Help Please :)

Mathematics

1 answer:

Gelneren [198K]3 years ago

4 0

Answer: All real numbers are solutions

Step-by-step explanation:

first lets distributive the 2(4x+1) to get 8x+2 because 2*4x= 8x and 2*1= 2

now the equation is 8x+2-5x+2= 3x+4

(COMBINE LIKE TERMS)

8x-5x=3x

2+2= 4

now the equation is 3x+4= 3x+4 (this means all real nubers are solutions)

You might be interested in

A 12 oz soda costs $1.25 in the vending machine. At that rate, how much would a<br> 48 oz soda cost?

Daniel [21]

Answer:

Step-by-step explanation:

48/12=4

1.25x4=5

Or you could set it up as a proportion

12/1.25=48/x

6 0

3 years ago

Help me on questions 8 through 12

mr_godi [17]

8. To find the answer you can eather multipy it for each of the sides or you can add it 6 times once for each side
$15\frac{1}{4} \times 6 \\ \\ 15 \frac{1}{4} + 15 \frac{1}{4} + 15 \frac{1}{4} + 15 \frac{1}{4} + 15 \frac{1}{4} + 15 \frac{1}{4}$
9. You basicly do the same thing as the previous problem but with the new numbers and you add each number 2 times

10. For are you multiply Base × Height So all you have to do is Multiply the 2 numbers shown together
$2 \frac{1}{2} \times 5$
11-12 Is the same but witb the new numbers

I hope this helps!

6 0

3 years ago

Consumer Reports indicated that the average life of a refrigerator before replacement is 14 years with a standard deviation of 2

guajiro [1.7K]

Answer:

a.) Average life of a refrigerator

b.) 0.1151

c.) 0.0548

d.) 0.6472225

Step-by-step explanation:

Given that :

Average life before replacement, mean, m = 14 years

Standard deviation, σ = 2 years

A.)

The random variable is the variable which is being measured.

B.) What is the probability that someone will keep a refrigerator fewer than 11 years before replacement?

Fewer than 11 years, P(x < 11)

We need to obtain the Z probability, at P(Z < 11)

The Zscore = (x - mean) / standard deviation

Zscore = (11 - 14) / 2.5 = - 1.2

P(Z < - 1.2) = 0.1151

C.) What is the probability that someone will keep a refrigerator more than 18 years before replacement?

More than 18 years, P(x > 18)

We need to obtain the Z probability, at P(Z > 18)

The Zscore = (x - mean) / standard deviation

Zscore = (18 - 14) / 2.5 = 1.6

P(Z > 1.6) = 0.0548

D.) What is the probability that someone will replace a refrigerator between 8 and 15 years?

P(x < 8)

The Zscore = (x - mean) / standard deviation

Zscore = (8 - 14) / 2.5 = - 2.4

P(Z < - 2.4) = 0.0081975

P(x < 15)

The Zscore = (x - mean) / standard deviation

Zscore = (15 - 14) / 2.5 = 0.4

P(Z < 0.4) = 0.65542

P(Z < 0.4) - P(Z < - 2.4)

0.65542 - 0.0081975 = 0.6472225

5 0

3 years ago

Helllpppppppppppppppppppppppp

Ivahew [28]

Answer:

Step-by-step explanation:

it's C

sorry if I am wrong

6 0

3 years ago

A town's recreation department is updating its parks. The parks must have slides and swings.

Fittoniya [83]

Number of swings = x
Number of slides = y

First condition:
number of slides must be more than 3 times number of swings
This means that: y > 3x

Second condition:
each swing cost 275$ and each slide costs 168$. They cannot spend more than 1250$. This means that the sum of costs of swings and slides should not exceed 1250$ (should be less than or equal to 1250$)
This means that: <span>275x+168y ≤ 1250

Based on this:
The correct choices are: b and d</span>

5 0

3 years ago

Read 2 more answers