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frozen [14]
3 years ago
7

Which ordered pair would be plotted by starting from the origin and moving 0.25 units left and then 3 units up?

Mathematics
1 answer:
miv72 [106K]3 years ago
7 0
<span>D) (-0.25, 3)..that is your anwers

</span>
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The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is . The US
alexandr1967 [171]

Answer:

The answer is "23, 62, and 139"

Step-by-step explanation:

In point a:

\to \sigma = \$0.24\\\\ \to E = \$0.10\\\\ 95\% \text{confidence level of the z}: \\\\\to \alpha = 1 - 95\% = 1 - 0.95 = 0.05\\\\\to \frac{\alpha}{2} = \frac{0.05}{2} = 0.025\\\\\to Z_{\frac{\alpha}{2}} = Z_{0.025} = 1.96\\\\

 Calculating the sample size:

\to n = (\frac{(Z_{\frac{\alpha}{2}} \times \sigma)}{E})^2

      = (\frac{(1.96 \times 0.24 )}{0.10})^2\\\\= 22.13 \approx 23

In point b:

\to \sigma = \$0.24\\\\\to E = \$0.06\\\\\to Z_{\frac{\alpha}{2}} = Z_{0.025} = 1.96\\\\\to n = (\frac{(Z_{\frac{\alpha}{2}} \times \sigma )}{E})^2\\\\

      = (\frac{(1.96 \times 0.24 )}{0.06})^2\\\\= 61.47 \approx 62

In point c:

\to \sigma = \$0.24\\\\\to E =\$0.04\\\\\to Z_{\frac{\alpha}{2}} = Z_{0.025} = 1.96\\\\\to n = (\frac{(Z_{\frac{\alpha}{2}} \times \sigma )}{E})^2\\\\

      = (\frac{(1.96\times 0.24 )}{0.04})^2 \\\\=138.30 \approx 139    

4 0
3 years ago
Solve the two-step equation. 14 = 31.7 – 3x
Alinara [238K]
14 = 31.7- 3x 

-17.7=-3x 

x=5.9
7 0
4 years ago
Read 2 more answers
What is the answer to y=-2x+3
Rama09 [41]

Answer:

x=3/2-1/2y

Step-by-step explanation:

y=-2x+3

+2x +2x

2x+y=3

-y -y

2x =3 - y

÷2 ÷2 ÷2

x=3/2 - 1/2y

7 0
3 years ago
(2a^2b + 3ab^2 - b^3) - (4b^3 - 3ab^2 -6a^2b)
skelet666 [1.2K]

<em>Hi there!</em>

<em>~</em>

<em></em>(2a^2b+3ab^2-b^3)-(4b^3-3ab^2-6a^2b)<em></em>

<em>Distribute the Negative Sign:</em>

<em></em>= 2a^2 b + 3ab^2 - b^3 + -1(4b^3 - 3ab^2 - 6a^2b)\\= 2a^2 b + 3ab^2 + - b^3 + -1 (4b^3) + -1 (-3ab^2) + -1 (-6a^2b)\\= 2a^2 b + 3ab^2 + -b^3 + -4b^3 + 3ab^2 + 6a^2 b<em></em>

<em>Combine Like Terms:</em>

<em></em>= 2a^2 b + 3ab^2 - b^3 + -4ab^3 + 3ab^2 + 6a^2 b\\= (2a^2 b + 6a^2 b) + ( 3ab^2 + 3ab^2) + (-b^3 + -4b^3) \\= 8a^2 b + 6ab^2 + -5b^3<em></em>

<em>Answer : </em>8a^2 b + 6ab^2 + -5b^3<em></em>

<em>Hope this helped you!</em>

7 0
3 years ago
Triangle A is a scaled version of triangle B. The dimensions of triangle B are three times the dimensions of triangle A. The are
Ksju [112]

Answer:

The  area of triangle B is 2.72cm ^{2}

Step-by-step explanation:

We will use the principle of similar triangles to solve the problem.

Since triangle A is just a scale version of triangle B, we can say that the two triangles are similar.

The area scale factor is the square of the length scale factor.

Given the length scale factor as 3,

The area scale factor will be 3 X 3 = 9 sq. cm

(Area of triangle A / Area of triangle B) =  (length of side A / Length of side B) square

\frac{24.5}{ area of B}= 3^{2}

\frac{24.5}{Area of B}= 9\\Area of B = \frac{24.5}{9}= 2.72 cm ^{2}

The  area of triangle B is 2.72cm ^{2}

8 0
4 years ago
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