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Sindrei [870]
2 years ago
15

The graph shows the weight and fuel efficiency, in miles per gallon, for a selection of vehicles.

Mathematics
2 answers:
olga_2 [115]2 years ago
6 0

Answer:

a

Step-by-step explanation:

IceJOKER [234]2 years ago
4 0
A should be the answer sorry if wrong
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PPLZ HURRY WILL MAK BRAINLIEST
zheka24 [161]
The answer is D because if you add all the same terms you get the answer
7 0
2 years ago
Read 2 more answers
You're standing on the ground 7777 meters away from the bottom of a tall tower. The tower itself is 346346 meters tall. What is
lys-0071 [83]

Answer:

88.7°

Step-by-step explanation:

First, visualize. Assuming that the tower is at a perfectly 90° angle to the ground, you have a right triangle. We will call this triangle ΔABC where A is where you are, B is the top of the tower, and C is the base of the tower. Now we know the following:

∠A = ?

∠B = ?

∠C =  90

a = 346346

b = 7777

c = ?

Note: Triangles are labeled with three pairs of letters: a, b and c and A, B and C. The lower case letters, a, b and c represent the sides, and the upper case letters are the angles that are directly opposite of those sides. (see attached reference)

c is easy, c is the hypotenuse, so you can use the following equation to find the hypotenuse:

a² + b² = c²

Rearranged:

c = ± \sqrt{a^{2} +b^{2} }

Substitute a and b:

c = ±\sqrt{346346^{2} +7777^{2} }

Comes out to ~346433.3 meters.

Now if we use the Law of Sines:

\frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}

We can use c and a, since we're trying to find what angle A is, so the ratio is set up as:

\frac{346346}{sinA} = \frac{346433.3}{sinC}

Well we know that C = 90, and so sin(90) in degrees (as opposed to radians) is 1. So then the set of equations is now:

\frac{346346}{sinA} = \frac{346433.3}{1}

Cross Multiply to get rid of the fractions:

346346 = 346433.3 * sin(A)

Divide:

\frac{346346}{346433.3} = sin(A)

Using a calculator, if you take the arcsin of that fraction, you will get what angle A is supposed to be:

arcsin( \frac{346346}{346433.3} ) = ∠A = 88.7°

5 0
2 years ago
A factorial experiment was designed to test for any significant differences in the time needed to perform English to foreign lan
yuradex [85]

Answer:

For main effects

Factor (Language translator) confirms that there is no significance difference between two levels of language translator of main effect at 5% level of significance.

Factor (Types of language) confirms that there is no significance difference between three levels of types of language at 5% level of significance.

also,

For interaction effect between language translator and types of language, there is no significant difference that the interaction between language translator and types of language at 5% level of significance.

Step-by-step explanation:

see attached.

3 0
3 years ago
If y=80,when x=32 find x when y=100
Bess [88]
Y        X
80     32
100    x'

80x' = 100*32
80x' = 3200
x' = 3200/80
x' = 320/8
x' = 40
5 0
3 years ago
Write an equation in point-slope form and slope - intercwpt form for passes through (1,9),slope =2
GrogVix [38]

point slope form

y-y1 = m(x-x1)

y-9 = 2(x-1)


change to slope intercept form

y-9 = 2(x-1)

distribute

y-9 = 2x-2

add 9 to each side

y = 2x-2+9

y = 2x+7

4 0
3 years ago
Read 2 more answers
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