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Vsevolod [243]
4 years ago
11

4x + 3.5x=180. How do you solve it

Mathematics
1 answer:
Grace [21]4 years ago
8 0
4+3.5=7.5
7.5x =180
180/7.5
=24 (answer)
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Please help thank you
Allushta [10]

The average rate of change of credit card is $ 401.79 /year.

<h3>What is Average Rate?</h3>
  • A single rate that is a weighted average of the different rates that are applicable to property in various locations.
  • An average is a single number calculated as the average of a set of numbers, typically calculated as the sum of the numbers divided by the total number of numbers in the set (the arithmetic mean).

<u>Solution</u>

The difference of credit card debt between the year 2006 and 1992 = 8900 - 3275 = $5625

The difference of years between the year 2006 and 1992 = 2006 - 1992 = 14

average rate of change of credit card debt with respect to time = \frac{difference of credit card debt}{difference of years}

average rate = \frac{5625}{14} = $ 401.79 / year

know more about average numerical brainly.com/question/18296887

#SPJ4

6 0
2 years ago
Shortern this expression pls​
pogonyaev

Answer:

c =\frac{8}{3}

Step-by-step explanation:

Given

c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7}} +  \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}}

Required

Shorten

We have:

c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7}} +  \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}}

Rationalize

c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7} * \frac{4 + \sqrt 7}{4 + \sqrt 7}} +  \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}*\frac{4 - \sqrt 7}{4 - \sqrt 7}}

Expand

c = \sqrt{\frac{(4 + \sqrt 7)^2}{4^2 - (\sqrt 7)^2}} +  \sqrt{\frac{(4 - \sqrt 7)^2}{4^2 - (\sqrt 7)^2}

c = \sqrt{\frac{(4 + \sqrt 7)^2}{16 - 7}} +  \sqrt{\frac{(4 - \sqrt 7)^2}{16 - 7}

c = \sqrt{\frac{(4 + \sqrt 7)^2}{9}} +  \sqrt{\frac{(4 - \sqrt 7)^2}{9}

Take positive square roots

c =\frac{4 + \sqrt 7}{3} +  \frac{4 - \sqrt 7}{3}

Take LCM

c =\frac{4 + \sqrt 7 + 4 - \sqrt 7}{3}

Collect like terms

c =\frac{4  + 4+ \sqrt 7 - \sqrt 7}{3}

c =\frac{8}{3}

4 0
3 years ago
Someone plz help 50 points and brainliest if correct!!!
givi [52]

Answer:

<u>Ratio of one dimension:</u>

  • k = R/r = 12/3 = 4

<u>Ratio of the volumes:</u>

  • k³ = 4³ = 64

<u>Smaller volume given:</u>

  • 97 cm³

<u>Larger volume: </u>

  • 97*64 = 6208 cm³
4 0
3 years ago
Read 2 more answers
Please Help!!
Vlad [161]

Answer:

1. 1.28

2. 55

3. +

Step-by-step explanation:

1. 0.043 x 10 {3}

= 0.043 x (10 x 3)

= 0.043 x 30

= <u>1.28</u>

2. 5 + (9) (6) - 4

= 5 + 9 x 6 - 4

= 5 + 54 - 4

= 59 - 4

= <u>55</u>

3. Which of the these operations should be completed last when solvingan equation?

a. x

b. +

c. ()

d.÷

<u>b. +</u>

6 0
3 years ago
A water bottle holds 5/8 liter of water when it is 3/4 full. which statement best describes the quotient of 5/8 ÷ 3/4​
Aloiza [94]

Answer:

The amount of water in liters in 1/4 of the container.

Step-by-step explanation:

5 0
2 years ago
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