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rewona [7]
3 years ago
8

Simplify: 7(3x-4) pls help

Mathematics
2 answers:
postnew [5]3 years ago
6 0

Answer:

21 x − 28

Step-by-step explanation:

Multiply using the distributive property.

Yuki888 [10]3 years ago
3 0
7(3x-4)

multiply
7*3x=21x
7*-4=-28

put them together
21x-28

hope this helped :)
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Answer:

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Step-by-step explanation:

for 3/5is multiplied with 4 both numerator and denominator

as known as 1/4 will multiplied by 5/5

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3 years ago
Four times a number added to 3 times a larger number is 31. Seven subtracted from the larger number is equal to twice the smalle
Rus_ich [418]

Answer:

y = negative four-thirds x + StartFraction 31 Over 3 EndFraction

y = 2 x + 7

Step-by-step explanation:

Let x represent the smaller number and y represent the larger number.

<h2><u /></h2><h2><u>Part 1</u></h2>

Four times a number added to 3 times a larger number is 31.

<u>It is translated as:</u>

  • 4x + 3y = 31

<u>Then, solving for y:</u>

  • 4x + 3y=31 ⇒ 3y= -4x+31 ⇒ y= (-4x+31)/3 = - 4/3x + 31/3

    ⇒  y= - 4/3x + 31/3

<u>Correct answer choice for this equation:</u>

y = negative four-thirds x + StartFraction 31 Over 3 EndFraction

<h2><u>Part 2 </u></h2>

Seven subtracted from the larger number is equal to twice the smaller number.

<u>It is translated as:</u>

  • y-7= 2x

<u>Then, solving for y:</u>

  • y-7= 2x ⇒ y= 2x+ 7

<u>Correct answer choice for this equation:</u>

y = 2 x + 7

4 0
3 years ago
Find the volume of the composite solid below. If needed,round to the nearest hundredth. Use 3.14
ZanzabumX [31]

Answer:

429.42 cm

Step-by-step explanation:

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V = πr²h

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V = (3.14)(1)(3)

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420 + 9.42

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3 years ago
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Alexxx [7]

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3/8

Step-by-step explanation:

I am pretty sure . . . . . .

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Solve using system of equations
IgorC [24]

Answer:

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Step-by-step explanation:

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combine like terms

x^2=1x+8

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Hope this helps!

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