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3 years ago

1. X^2 - 11 = 70 solve for x

Mathematics

2 answers:

Sav [38]3 years ago

3 0

Answer:

Answer: 9

Step-by-step explanation:

X^2-11=70

X^2=81

X=√81

X=9

timurjin [86]3 years ago

3 0

Answer:

X^2-11=70

X^2-11+11=70+11 Add 11 to both sides

x^2=70+11 Add 11 to 70

x^2=81 Now simplify

x=9

Step-by-step explanation:

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WILL GIVE BRAINLIEST AND THANKS. find the value of x

san4es73 [151]

Answer:

180 - 36? I dont exactly remember how to do this

Step-by-step explanation:

Sorry if its not right

5 0

3 years ago

Is it ok you guys maybe do this one too sorry... (−6)(−0.4)(−0.5)

olchik [2.2K]

(-6)(-0.4)(-0.5) = (-1)6⋅4⋅5⋅10⁻² = -1.2

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3 years ago

For c = d(3.14), what is c when d = 100 show work

Katyanochek1 [597]

Answer:314

Step-by-step explanation: 3.14 x 100 = 314

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5 0

3 years ago

Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below

BARSIC [14]

Answer:

Due to the higher Z-score, Demetria should be offered the job.

Step-by-step explanation:

Z-score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

In this question:

Whichever applicant had grade with the highest z-score should be offered the job.

Demetria got a score of 85.1; this version has a mean of 61.1 and a standard deviation of 12.

For Demetria, we have $X = 85.1, \mu = 61.1, \sigma = 12$ . So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{85.1 - 61.1}{12}$

$Z = 2$

Vincent got a score of 299.2; this version has a mean of 264 and a standard deviation of 22.

For Vincent, we have $X = 299.2, \mu = 264, \sigma = 22$ .

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{299.2 - 264}{22}$

$Z = 1.6$

Tobias got a score of 7.26; this version has a mean of 7.1 and a standard deviation of 0.4.

For Tobias, we have $X = 7.26, \mu = 7.1, \sigma = 0.4$ .

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{7.26 - 7.1}{0.4}$

$Z = 0.4$

Due to the higher Z-score, Demetria should be offered the job.

3 0

3 years ago

The area of a triangular block is 16 squre inches. If the base of the triangle is twice the height, how long are the base and th

klemol [59]

The area of a triangle can be calculated using the formula

1/2 (base) (height)

Let's substitute our known values, letting x represent the value of the height of the triangle.

16 = 1/2* x* 2x

Let's Simplify!

16 = x^2

Finally, lets take the square root of both sides, to get rid of the exponent on the right side of the equation.

x= positive OR negative 4.

However, because x is equal to the height, we know that it can't be negative, so we know that it is positive 4.

The height of the triangle = 4 inches
The base of the triangle = 2h = 8 inches

6 0

3 years ago