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Sergeeva-Olga [200]

3 years ago

6

Roger and Rita each drive at a constant speed between Phoenix and San Diego. Each driver’s distance for the same section of the

trip is displayed below.
Who had a head start, and how many miles was the head start?

2 answers:

motikmotik3 years ago

7 0

Answer:

The one you chose in the image is correct (A)

SpyIntel [72]3 years ago

7 0

Answer:

a: Rita had a 28 mile head start

Step-by-step explanation:

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Write the expression 12 × 4-2( the 2 is for the symbol squared.) in words.

Natalka [10]

Answer: Twelve times four squared

Step-by-step explanation: hope it helps

6 0

2 years ago

Lavonne has 4/5 cup of blueberry muffins requires 1/3 cupof blueberrys how many batches of blueberry muffins can lovonne make

34kurt

How many 1/3 cups blueberry can you get out of the 4/5 cup..

= (4/5) / (1/3)
= (4/5)*(3/1)
= 12/5
= 2 2/5 batches

6 0

2 years ago

Help me pls... Thanks

aalyn [17]

Answer:

ok im not good at math but les see how this goes errr

Step-by-step explanation:welp i think it s35 beAZcausee im smART :))))

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8 0

3 years ago

Read 2 more answers

Each year the US Environmental Protection Agency (EPA) releases fuel economy data on cars manufactured in that year. Below arc s

fomenos

Answer:

Follows are the solution to this question:

Step-by-step explanation:

Please find the complete question in the attachment file.

$n_1 = 26 \\\\ x_1 = 16.12 \\\\s_1 = 3.58\\\\n_2 = 26\\\\ x_2 = 19.85 \\\\ s_2 = 4.51$

$H_0: u_1 = u_2\\\\H_1: u_1 \neq u_2$

Using formula:

$\to S^{2}_{p}=\frac{S^{2}_{1}(n_1 -1)+ S^{2}_{2}(n_2-1)}{n_1+n_2-2}$

$\to Sp^2 = \frac{((26-1) \times (3.58^2) + (26-1) \times (4.51^2))}{(26+26-2)}$

$= \frac{((25) \times 12.8164 + (25) \times 20.3401 )}{(26+24)}\\\\ = \frac{(320.41 + 508.5025)}{(50)}\\\\ = \frac{(828.9125)}{(50)}\\\\=16.57825$

$\to Sp = 4.0716$

Calculating the value of standard error:

$\to SE = Sp \times \sqrt{\frac{1}{n_1}+\frac{1}{n_2}}$

$=4.0716 \times \sqrt{\frac{1}{26}+\frac{1}{26}}\\\\=4.0716 \times \sqrt{\frac{1+1}{26}}\\\\=4.0716 \times \sqrt{\frac{2}{26}}\\\\=4.0716 \times \sqrt{\frac{1}{13}}\\\\=4.0716 \times 0.277 \\\\=1.1278332\\\\= 1.1293$

Calculating the value of test statistic:

Formula:

$\to t = \frac{(x_1-x_2)}{SE}$

$= \frac{(16.12 -19.85)}{1.1293}\\\\= \frac{(-3.73)}{1.1293}\\\\=-3.303$

Calculating the value of Degree of freedom:

$= n_1+n_2 -2 \\\\= 26+26 -2 \\\\= 52 -2 \\\\= 50$

Because the P-value is a 2-tailed test = 0.0018

Thus they reject H0, because of P-value < 0.05,

Yeah, certain data show clearly that the means are different.

7 0

2 years ago

What is the maximum and minimum?

melomori [17]

The extreme value is −4. To see whether it is a maximum or aminimum, in this case we can simply look at the graph. f(x) is a parabola, and we can see that the turning point is a minimum. By finding the value of x where the derivative is 0, then, we have discovered that the vertex of the parabola is at (3, −4).

6 0

3 years ago