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4 years ago

5х + 3 = 43 What this??

Mathematics

2 answers:

Artist 52 [7]4 years ago

8 0

Answer:

answer is x = 8

Step-by-step explanation:

If it says add 3 you subtract it to the 43 and that turns into 40, divide both sides by 5 and you get x = 8 :)

svp [43]4 years ago

8 0

Answer:

x=8

Step-by-step explanation:

Im not sure what your question means,but you need to find x.

5x+3=43

You subtract 3 on both sides

leaving your equation to be

5x=40

Now divide the 5

and you will get x=8

Check:

5(8)+3=43

40+3=43

43=43

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How do i solve 0.074 x n equals 74

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0.074n = 74
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4 years ago

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Match each quadratic equation with its solution set.

Marianna [84]

Answer:

( 8 , - 8) => x² - 55 = 9

( 4 , - 4) => 2x² - 32 = 0

(5 , - 5) => 4x² - 100 = 0

(11 , - 11) => x² - 140 = -19

( 3, - 3) => 2x² - 18 = 0

Step-by-step explanation:

$2x^2 - 32 = 0\\\\2(x^2 - 16 ) = 0 \\\\x^2 - 16 = 0 \\\\x^2 = 16 \\\\x = \sqrt {16 } = \pm 4$

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$4x^2 - 100 = 0 \\\\4(x^2 - 25 ) = 0\\\\x^2 - 25 = 0 \\\\x^2 = 25 \\\\x= \sqrt{25} = \pm 5$

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x= ( 8 , - 8)

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x = ( 11 , -11)

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8 0

3 years ago

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The perimeter of rectangle is 48 cm. Find the sides of the rectangle if one of the sides is 12 cm longer than the other.

muminat

Answer:

Width is 4cm, length is 12 cm.

Step-by-step explanation:

Write the problem as an equation.

(x+12)*(x)=48

Where x is the length of the shorter side.

Solve.

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3 years ago

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1. Noah printed a map of a walking trail. The length of the trail is 12 cm.

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Answer:

B: 24

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3 years ago

A survey reported that 70% of those responding to a national survey of college freshmen were interested in taking summer courses

olya-2409 [2.1K]

Answer:

95% confidence interval: (0.5717,0.8283)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 49

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Alpha, α = 0.05

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Putting the values, we get,

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