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diamong [38]
3 years ago
5

777,000,000 in expanded form

Mathematics
2 answers:
RUDIKE [14]3 years ago
7 0
700,000,000 + 70,000,000 + 7,000,000
Luden [163]3 years ago
4 0
(7 x 100,000,000) + (7 x 10,000,000) + (7 x 1,000,000) = 777,000,000.
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Rebecca is a real estate agent who would like to find evidence supporting the claim that the population mean market value of hou
nydimaria [60]

Answer:

Option C) There are enough evidence that at significance level of 0.05 to support the claim that the the population mean market value of houses in the neighborhood where she works is greater than $250,000.

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = $250,000

Sample mean, \bar{x} = $259,860

Sample size, n = 35

Alpha, α = 0.05

Sample standard deviation, σ = $24.922

First, we design the null and the alternate hypothesis

H_{0}: \mu = 250,000\text{ dollars}\\H_A: \mu > 250,000\text{ dollars}

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

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} } = 2.34

0.01 < \text{ p-value }< 0.025

Since the p-value is less than the significance level, we fail to accept the null hypothesis.

There are enough evidence that at significance level of 0.05 to support the claim that the the population mean market value of houses in the neighborhood where she works is greater than $250,000.

6 0
3 years ago
What is the sum of (2x+4)+(-3x+9)
Levart [38]

Answer:

-x + 13

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define expression</u>

(2x + 4) + (-3x + 9)

<u>Step 2: Simplify</u>

  1. Combine like terms (x):                    -x + 4 + 9
  2. Combine like terms (Z):                    -x + 13
7 0
2 years ago
Read 2 more answers
Help please! Could you put an explanation as well?
dusya [7]

Answer:

y = 2x

Step-by-step explanation:

you multiply the x by 2 to get the y.

i don't know if this helps

4 0
3 years ago
What is the reciprocal of 4 5/8
Andrei [34K]

Answer:

8/45

Step-by-step explanation:

Write 4 5/8 as an improper fraction:  45/8.

Then invert this result, obtaining:

 .  This is the "reciprocal" of 4 5/8.

5 0
3 years ago
Read 2 more answers
-6•(-18).......help this is due tomorrow
marin [14]
Two positives multiplied together give us a positive answer. and 18 • 6 is 108.
108 is the answer
hope this helped, xx
7 0
3 years ago
Read 2 more answers
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