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3 years ago

Solve each of the following equations by the trial and error method : A) X- 7= -3 help some one now

Mathematics

1 answer:

Vaselesa [24]3 years ago

8 0

Answer:

X - 7 = - 3

X = - 3 + 7

X = 4

the 7 turns positive because it was moved to the other side of the symbol "=" so we reverse the sign

- becomes +

and

+ becomes -

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3 years ago

What percent of 8 is 33.52

Nonamiya [84]

419 because all you have to do is calculate it

5 0

3 years ago

Read 2 more answers

Evaluate the expression for x = 2

Lena [83]

Answer:

the last one is -4 the first one -2 I think

Step-by-step explanation:

im at this level of math

3 0

3 years ago

In a survey men in a certain country (ages 20-29), the mean height was 62.8 inches with a standard deviation of 2.8 inches, what

AVprozaik [17]

Answer:

the height that represents the 99th percentile is 69.324 inches

Step-by-step explanation:

Given that :

the mean height = 62.8 inches

standard deviation = 2.8 inches

For 99th percentile;

Let X be the random variable;

SO, P(Z≤ z) = 0.99

From the standard normal z tables

P(Z )= 2.33

The standard z score formula is :

$z = \dfrac{X- \mu}{\sigma}$

$2.33 = \dfrac{X- 62.8}{2.8}$

2.33 × 2.8 = X - 62.8

6.524 = X - 62.8

6.524 +62.8 = X

69.324 = X

X = 69.324

Therefore; the height that represents the 99th percentile is 69.324 inches

8 0

3 years ago

Three teachers equally shared StartFraction 4 Over 5 EndFraction of a flat of paper that was donated to the school. What fractio

melisa1 [442]

Answer:

$Each = \frac{4}{15}$

Step-by-step explanation:

Given

$Fraction = \frac{4}{5}$

$Teachers = 3$

Required

Determine fraction of each teacher

Each fraction is calculated by dividing total fraction by number of teachers as follows:

$Each = \frac{Fraction}{Teachers}$

$Each = \frac{4}{5}/3$

$Each = \frac{4}{5} * \frac{1}{3}$

$Each = \frac{4}{15}$

4 0

3 years ago

Solve each of the following equations by the trial and error method : A) X- 7= -3 help some one now​

Solve each of the following equations by the trial and error method : A) X- 7= -3 help some one now