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3 years ago

What does a - 45 degree angle look like?

Mathematics

1 answer:

Sauron [17]3 years ago

4 0

Here's a picture I found on google of what a 45 degree angle looks like.

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During a test period, an experimental group of 10 vehicles using an 85 percent ethanol-gasoline mixture showed mean CO2 emission

Aleksandr-060686 [28]

Answer:

Probably unequal ( B )

Step-by-step explanation:

<u>experimental group = 10</u>

using 85% ethanol gasoline

mean = 240 pounds per 100 miles

standard deviation = 20 pounds

<u>control group = 14 vehicles </u>

using regular gasoline

mean = 252 pounds per 100 miles

standard deviation = 15 pounds

comparing the sample variance of each group shows that they are probably unequal using the equation below

Variance for a sample set of data = ∑ ( x - X ) ^2 / n - 1

where n = number of events

X = mean value

x = value of events

8 0

3 years ago

The coordinates of the vertices of △PQR are P(1, 4), Q(2, 2), and R(−2, 1). The coordinates of the vertices of △P′Q′R′ are P′(−1

swat32

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3 0

3 years ago

A meal has 408 calories in 8 servings. Find the unit rate.

julsineya [31]

Answer:

51 calories per serving

Step-by-step explanation:

Take the total number of calories and divide by the number of servings

408 calories / 8 servings

51 calories per serving

3 0

2 years ago

Read 2 more answers

Simplify the expression

Masja [62]

The solution to the expression $\frac{x^2+7x+12}{x-3} .\frac{x^2-6x+9}{2x^2-18}$ gives (x + 4)/2

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more number and variables.

$\frac{x^2+7x+12}{x-3} .\frac{x^2-6x+9}{2x^2-18} \\\\=\frac{(x +3)(x +4)}{x-3} .\frac{(x-3)(x-3)}{2(x+3)(x-3)} =\frac{x+4}{2}$

The solution to the expression $\frac{x^2+7x+12}{x-3} .\frac{x^2-6x+9}{2x^2-18}$ gives (x + 4)/2

Find out more on equation at: brainly.com/question/2972832

#SPJ1

5 0

2 years ago

Find three points with integer valued coordinates that solve the equation -2x-3y=-7

Evgesh-ka [11]

Answer:

Step-by-step explanation:

We have the equation of the line in the standard form:

$Ax+By=C$

Convert to the slope-intercept form:

$y=mx+b$

$-2x-3y=-7$ <em>add 2x to both sides</em>

$-3y=2x-7$ <em>divide both sides by (-3)</em>

$y=-\dfrac{2}{3}x+\dfrac{7}{3}$

for x = -1

$y=-\dfrac{2}{3}(-1)+\dfrac{7}{3}=\dfrac{2}{3}+\dfrac{7}{3}=\dfrac{2+7}{3}=\dfrac{9}{3}=3\to(-1,\ 3)$

for x = 2

$y=-\dfrac{2}{3}(2)+\dfrac{7}{3}=-\dfrac{4}{2}+\dfrac{7}{3}=\dfrac{-4+7}{3}=\dfrac{3}{3}=1\to(2,\ 1)$

for x = 5

$y=-\dfrac{2}{3}(5)+\dfrac{7}{3}=-\dfrac{10}{3}+\dfrac{7}{3}=\dfrac{-10+7}{3}=\dfrac{-3}{3}=-1\to(5,\ -1)$

5 0

3 years ago