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2 years ago

Solve for x in the equation x2 + 4x-4=8.

1 answer:

7 0

${x}^{2} + 4x - 4 = 8 \\ = > {x}^{2} + 4x - 4 - 8 = 0 \\ = > {x}^{2} + 4x - 12 = 0 \\ = > {x}^{2} + 6x - 2x - 12 = 0 \\ = > x(x + 6) - 2(x + 6) = 0 \\ = > (x - 2)(x + 6) = 0 \\ = > x = 2 \: \: \: or \: \: \: x = - 6$

Answer:

x = -6 or x = 2

Hope you could get an idea from here.

Doubt clarification - use comment section.

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I'll give u brianliest if you share the answer and how you got it

Bogdan [553]

Answer:a is 52 b is 65

Step-by-step explanation:

a:Write 65% as 65100.

65100 of 80 = 65100 × 80.

Therefore, the answer is 52. If you are using a calculator, simply enter 65÷100×80 which will give you 52 as the answer.

b: it is 65 because it is the same question but in reverse which still gives you the same answer.

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please give brainlyist

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3 years ago

Read 2 more answers

The number of entrees purchased in a single order at a Noodles & Company restaurant has had an historical average of 1.35 en

trasher [3.6K]

Answer:

a) 0.3571

b) The p-value is 0.362007.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 1.35

Sample mean, $\bar{x}$ = 1.4

Sample size, n = 26

Alpha, α = 0.01

Sample standard deviation, s = 0.7

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 1.35\text{ entrees per order}\\H_A: \mu > 1.35\text{ entrees per order}$

We use One-tailed t test to perform this hypothesis.

a) Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n-1}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{1.4 - 1.35}{\frac{0.7}{\sqrt{25}} } = 0.3571$

b) The p-value at t-statistic 0.3571 and degree of freedom 25 is 0.362007.

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3 years ago

How many students chose walking as their preferred method of transportation

vova2212 [387]

Is there a picture for viewing

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3 years ago

A plumber charges $75 for the service call and $25 per hour (h) for repairs. Write an algebraic expression to represent the tota

Anika [276]

Answer:

75 + 25h

Step-by-step explanation:

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3 years ago

Plssss help use multiplication to solve the proportion

kobusy [5.1K]

Answer:

Its 7.333333333333333333 (3 forever)

First you isolate y onto one side of the equation

y/9= 44/54 --> y = 9 x 44/54

Multiply the right side of the equation

9 x 44/54 = 396/54

Now divide to get the whole answer

396/54 = 7.3333333333 (3 forever)

y = 7.333333

7 0

3 years ago