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koban [17]
3 years ago
14

Write an equation to solve for x you are only writing the equations 8x+10 12x-18​

Mathematics
2 answers:
Elis [28]3 years ago
7 0

\large\blue{\tt Correct \:  Question :-}

\impliesWrite an equation to solve for x you are only writing the equations 8x + 10 = 12x - 18

\large\orange{\tt Given :-}

\to\tt8x+10 = 12x-18

\large\green{\tt To \:  Find :-}

\to\tt Value  \: of  \: \boxed{\bf x}

\large\red{\tt Solution :-}

:\implies\tt 8x+10  = 12x-18

:\implies\tt 8x - 12x = - 18 - 10

:\implies\tt \cancel- 4x = \cancel- 28

:\implies\tt x = \frac{\cancel{28}}{\cancel4}

:\implies\boxed{\orange{\tt x = 7}}

\therefore\bf The \: value \: of \: x \: is \: 7

djyliett [7]3 years ago
6 0

Answer:

  • x = 7

Step-by-step explanation:

<u>Required equation</u>

  • 8x + 10 = 12x - 18

<u>Solving for x</u>

  • 12x - 8x = 10 + 18
  • 4x = 28
  • x = 28/4
  • x = 7
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Step-by-step explanation:

z+\frac{21}{-1} =-3*z+\frac{21}{-1}

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Answer:

There is no sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

We are given;

n = 27 bags

Sample mean;X = 402 gram

Population mean;μ = 404 gram

Variance = 676

We know that, standard deviation(σ) = √variance

Thus;

σ = √676

σ = 26

The hypotheses are;

Null hypothesis; H0: μ = 404

Alternative hypothesis; HA: μ < 404

Let's find the z-score from the formula;

z = (X - μ)/(√σ/n)

z = (402 - 404)/√(26/27)

z = -2.04

From the z-distribution table attached, we have a p-value of 0.02068

This is less than the significance value of 0.01 and thus we will reject the null hypothesis and conclude that there is no sufficient evidence to support the claim that the bags are underfilled

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It will take 19 years and 6 months for the account value to reach 2900 dollars

Step-by-step explanation:

Given

Principal amount = 1400 dollars

Rate = 5.5 %

Final value = A = 2900

We have to find t

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The formula for simple interest is:

A = P(1+rt)

Putting values

2900 = 1400(1+0.055.t)\\\frac{2900}[1400} = 1+0.055t\\2.071 = 1+0.055t\\2.071-1=0.055t\\1.071 =0.055t

Dividing both sides by 0.055

\frac{0.055t}{0.055} = \frac{1.071}{0.055}\\t = 19.47\ years

Rounding off to nearest tenth

19.5 years

Hence,

It will take 19 years and 6 months for the account value to reach 2900 dollars

Keywords: Interest, simple interest

Learn more about interest at:

  • brainly.com/question/2654504
  • brainly.com/question/2654231

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