3 years ago

Evaluate 3x^2, when x is 5 Help meee

Mathematics

2 answers:

Ghella [55]3 years ago

5 0

Answer:

Step-by-step explanation:

Neporo4naja [7]3 years ago

5 0

Answer:

Step-by-step explanation:

3(5^2) = 3(25) = 75

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Select all expressions that represent a correct solution to the equation 6(x+4)=20

DerKrebs [107]

Answer:

6(x+4)=20 (use the distributive property)

6x+24=20

6x = 20-24

6x = -4

x = -4/6

x = -2/3 or -0.66

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4 years ago

Read 2 more answers

What is the result when the number 28 is increased by 75%?

Eddi Din [679]

The value will be 49.

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3 years ago

Solve the rational equation 1/(x-2)-1/(x+3) = 1/5

sasho [114]

Answer:

x = 5.09, -6.09.

Step-by-step explanation:

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

Multiply through by the LCM 5(x-2)(x+3):

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

5x + 15 - 5x + 10 = x^2 + x - 6

x^2 + x - 31 = 0

x = [ -1 +/- sqrt(1 - 1*1*31)] / 2

x = 5.09, -6.09.

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4 years ago

Please help!!! I'm super confused with this one, show work so that I can figure out what I did wrong.

givi [52]

Answer: The length of CU is 117 units.

Step-by-step explanation:

Given: ΔWCD≈ΔWUV

We know that if two triangles are similar, then their corresponding sides are proportional.

∴ $\frac{WU}{WC}=\frac{WV}{WD}$

$\frac{36x-1}{26}=\frac{110}{20}\\\Rightarrow\ 36x-1=\frac{11}{2}\times26\\\Rightarrow36x-1=143\\\Rightarrow\ 36x=143+1\\\Rightarrow\ 36x=144\\\Rightarrow\ x=4$

∴ WU= $36(4)-1=143$

Also , WU=WC+CU

⇒CU=WU-WC

⇒CU=143-26=117 units

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3 years ago

24 oz of soda cost 1.29 at that rate how much would you expect 30 oz. of soda to cost?

Naily [24]

Answer:

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Step-by-step explanation:

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3 years ago