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2 years ago

Find x . a.21.4 b. 15.1 c. 32.7 d. 29.2

Mathematics

1 answer:

Alex73 [517]2 years ago

8 0

So this is going to be using proportions, which in this case is going to be $\frac{18}{21} =\frac{25}{x}$

Firstly, cross-multiply to get $18x=525$

Next, just divide 18 on both sides, and your answer will be $x=29.2$ , or the last option.

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2 years ago

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VikaD [51]

Let's use the slope-intercept equation:

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3 months ago

First to answer correctly will be marked brainliest

kozerog [31]

Answer:

Step-by-step explanation:

Binomial: 2 terms
Trinomial: 3 terms
Linear: a straight line
Quadratic: like a curved line

(3x + 2) - (x + 5)

1(3x + 2) - 1(x + 5)

3x + 2 - x - 5 <== combine like terms

3x - x + 2 - 5

2x - 3 <== final answer, linear binomial

(2x + 8) + (3x² - 2)

1(2x + 8) + 1(3x² - 2)

2x + 8 + 3x² - 2

3x² + 2x + 6 <== final answer, quadratic trinomial

(3x + 8) + (4x² - x)

1(3x + 8) + 1(4x² - x)

3x + 8 + 4x² - x

4x² + 2x + 8 <== final answer, quadratic trinomial

(x² + 5x minus (-) 2) + (8 minus (-) 5x)

(x² + 5x - 2) + (8 - 5x)

1(x² + 5x - 2) + 1(8 - 5x)

x² + 5x - 2 + 8 - 5x

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(x² + 7x) - (x² + 5)

1(x² + 7x) - 1(x² + 5)

x² + 7x - x² - 5

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Hope this helps!

7 0

1 year ago

A store has clearance items that have been marked down by 25%. They are having a sale, advertising an additional 40% off clearan

Hatshy [7]

Answer: He would pay 45% of the original price.

Step-by-step explanation:

Since we have given that

Let the original price of item be 'x'

Rate mark down by 25%

Amount of marked down would be

$\dfrac{25}{100}\times x\\\\=0.25x$

Amount after marked down becomes

$x-0.25x\\\\=0.75x$

Additional clearance items by 40% off

Amount of additional off is given by

$\dfrac{40}{100}\times 0.75x\\\\=0.4\times 0.75x\\\\=0.3x$

After additional off, the amount becomes,

$0.75x-0.3x\\\\=0.45x$

Hence, he would pay 45% of the original price.

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2 years ago

Jimmy is cutting old rope to make homemade rugs. Each rug has long pieces and short pieces. Complete questions 1011.

Svetllana [295]

Answer:

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Step-by-step explanation:

18+18+18+18+18+18+18=126

3+3+3+3+3+3+3=21

hope this helped <3

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2 years ago