3 years ago

Three times the sum of a number and four and five

Mathematics

1 answer:

BabaBlast [244]3 years ago

6 0

Answer:

3x+27

Step-by-step explanation:

3(x+4+5)=

3x+12+15=

3x+27

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Given the equation:

Alisiya [41]

Answer:

x = 1 and x = $\frac{-4}{5}$

Step-by-step explanation:

In this equation, a=5, b=-1, c=-4.

Plug these into the quadratic formula:

x = $\frac{1+\sqrt{-1^{2}-(-4)(5)(-4) } }{2(5)}$ and x = $\frac{1-\sqrt{-1^{2}-(-4)(5)(-4) } }{2(5)}$

Now, simplify the equations:

x = $\frac{1+\sqrt{81} }{10}$ = $\frac{1+9}{10}$ = $\frac{10}{10}$ = 1

and

x = $\frac{1-\sqrt{81} }{10}$ = $\frac{1-9}{10}$ = $\frac{-8}{10}$ = $\frac{-4}{5}$

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4 years ago

1/2=2m multiplication and division equations

krek1111 [17]

1/2 = 2m

2m/2 = 1/2 divided by 2

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m = 1/4
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Answer: m = 1/4 or 0.25

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3 years ago

A tennis racket normally costs $80. The tennis racket is on sale for 70% off.

Anarel [89]

Answer:So the final sale would be $24

Step-by-step explanation:

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3 years ago

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Molodets [167]

-2y-11=Z

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4 years ago

Multi step equation help<br><br> 5n - 2 ( 2 -n ) = -7

ELEN [110]

Answer:

-3/7

Step-by-step explanation:

$5n-2(2-n)= -7\\\\\\5n-4+2n= -7\\\\\\7n=-7+4\\\\\\7n=-3\\\\\\\bold{n=\dfrac{-3}{7}}$

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2 years ago

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