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3 years ago

Simplify 1+3^2⋅2−5 -48 14 15 27

Mathematics

1 answer:

never [62]3 years ago

5 0

Answer:

Step-by-step explanation:

my dad is a math teacher so I am good at math

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I need to solve for x.

sineoko [7]

Answer:

45 degress

Step-by-step explanation:

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3 years ago

the distant between two towns is kilometers there are approximately 8 kilometers in 5 miles which measurement is closest to the

RUDIKE [14]

both towns are the same length because they are the same distance away from each other.

4 0

3 years ago

Solve the following system of equations. 9x+8y=-3 5x-2y=-21

Anni [7]

9x+8y=-3
5x-2y=-21

multiply 2nd equation by 4
9x + 8y = -3
20x - 8y = -84
-----------------add
29x = -87
x = -3

9x+8y=-3
9(-3)+8y=-3
-27 + 8y = -3
8y = -3 +27
8y = 24
y = 3

answer
(-3,3)

3 0

4 years ago

Read 2 more answers

For a sample size of 115 and a population parameter of 0.1,what is the standard deviation of the normal curve that can be used t

Helga [31]

Answer:

A) 0.028

Step-by-step explanation:

Given:

Sample size, n = 115

Population parameter, p = 0.1

The X-Bin(n=155, p=0.1)

Required:

Find the standard deviation of the normal curve that can be used to approximate the binomial probability histogram.

To find the standard deviation, use the formula below:

$\sigma = \sqrt{\frac{p(1-p)}{n}}$

Substitute figures in the equation:

$\sigma = \sqrt{\frac{0.1(1 - 0.1)}{115}}$

$\sigma = \sqrt{\frac{0.1 * 0.9}{115}}$

$\sigma = \sqrt{\frac{0.09}{115}}$

$\sigma = \sqrt{7.826*10^-^4}$

$\sigma = 0.028$

The Standard deviation of the normal curve that can be used to approximate the binomial probability histogram is 0.028

5 0

3 years ago

All identities are equations, and all equations are identities. True of False

trasher [3.6K]

All identities are equations, but ONLY SOME equations are identities.

sinx = cos(π/2 - x) (Equation and Identity

y= cosx -x², it's an equation but NOT an identity

8 0

4 years ago

Read 2 more answers