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4 years ago

What is the following difference ? 11 StartRoot 45 EndRoot minus 4 StartRoot 5 EndRoot

Mathematics

2 answers:

trasher [3.6K]4 years ago

8 0

Answer:

Step-by-step explanation:

Inessa [10]4 years ago

3 0

Answer:

29 $\sqrt{5}$

Step-by-step explanation:

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Basic Computation: Testing M1 2 M2 A random sample of 49 measurements from a population with population standard deviation 3 had

Elenna [48]

Answer:

The sample statistics follows a standard normal distribution since the sample size are large enough.

Step-by-step explanation:

Given that:

First population:

Sample size $n_1$ = 49

Population standard deviation $\sigma_1$ = 3

Sample mean $\overline x _1$ = 10

Second population:

Sample size $n_2$ = 64

Population standard deviation $\sigma_2$ = 4

Sample mean $\overline x_2$ = 12

The sample statistics follows a standard normal distribution since the sample size are large enough.

The null and alternative hypotheses can be computed as:

$\mathbf{H_o:\mu_1=\mu_2}$

$\mathbf{H_1:\mu_1\ne\mu_2}$

Level of significance = 0.01

Using the Z-test statistics;

$Z = \dfrac{\overline x_1 - \overline x_2}{\sqrt{\dfrac{\sigma_1^2}{n_1} + \dfrac{\sigma_2^2}{n_2}}}$

$Z = \dfrac{10- 12}{\sqrt{\dfrac{3^2}{49} + \dfrac{4^2}{64}}}$

$Z = \dfrac{-2}{\sqrt{\dfrac{9}{49} + \dfrac{16}{64}}}$

$Z = \dfrac{-2}{\sqrt{0.18367 +0.25}}$

$Z = \dfrac{-2}{\sqrt{0.43367}}$

$Z = \dfrac{-2}{0.658536}$

Z = - 3.037

Z $\simeq$ - 3.04

The P-value = 2P (z < -3.04)

From the z tables

= 2 × (0.00118)

= 0.00236

Thus, since P-value is less than the level of significance, we fail to reject the null hypotheses $H_o$

5 0

3 years ago

What is 34 divided by the square root of 5

Margaret [11]

Answer:

15.205

Step-by-step explanation:

simplemathdbdjjsjdi

5 0

3 years ago

Read 2 more answers

50 POINTS!! + BRAINLIEST Find the measure of ∠AED

Gnoma [55]

The answer is A.) 25

I just did 3x+10=5x and solved it

3 0

4 years ago

Read 2 more answers

What are the steps below to show the incomplete solution to find the value of x for the equation 5x - 2 x - 3 = -2 + 17?

Crank

Step-by-step explanation:

Ok so first you have to combine the like terms.

5x-2x-3=-2+17

3x-3=15

Add 3 to each side.

3x=18

Divide 18 by 3.

x=6

Hope this helps!

7 0

3 years ago

Find the equation of the line that cuts through (0,5) and (1, 2)? a. y=-3x + 5 b. y = 3x + 5 c. y = -5x + 3 d. Y = -1/3x + 5. Pl

Dafna11 [192]

Answer:

a. y = -3x + 5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Slope-Intercept Form: y = mx + b

m - slope
b - y-intercept

Step-by-step explanation:

Step 1: Define

y-intercept (0, 5)

Point (1, 2)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute [SF]: $m=\frac{2-5}{1-0}$
Subtract: $m=\frac{-3}{1}$
Divide: $m=-3$

Step 3: Write Equation

Plug in variables into the general form.

y = -3x + 5

8 0

3 years ago