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topjm [15]
3 years ago
8

HELp me pls again!!plssssss

Mathematics
1 answer:
alexira [117]3 years ago
6 0
For the top one it would be about 44 because if you multiply each amount of hours by 11 you'll get the miles. so 44 miles per hour
You might be interested in
Find the values of x and y
zhuklara [117]

You can use a tangent:

tangent=\dfrac{opposite}{adjacent}

We have opposite = 17 and adjacent = x.

\tan30^o=\dfrac{\sqrt3}{3}

substitute:

\dfrac{17}{x}=\dfrac{\sqrt3}{3}       cross multiply

x\sqrt3=(3)(17)     multiply both sides by √3

x(\sqrt3)(\sqrt3)=51\sqrt3

3x=51\sqrt3      divide both sides by 3

x=17\sqrt3

Use the Pythagorean theorem:

y^2=(17\sqrt3)^2+17^2\\\\y^2=289(\sqrt3)^2+289\\\\y^2=289\cdot3+289\\\\y^2=867+289\\\\y^2=1156\to y=\sqrt{1156}\\\\y=34

-------------------------------------------------------------------------------------------------

Other method.

30^o-60^o-90^o triangle.

The sides are in the ratio 1:2:\sqrt3\to17:y:x

Therefore

17:(2\cdot17):(17\sqrt3)\to17:34:17\sqrt3\to x=34,\ y=17\sqrt3

 


4 0
3 years ago
WHAT IS <br> 9x 3/5 IN FRSCTION FORM NEED HELP THASNK you
asambeis [7]

Answer:

27/5 or 5 2/5

Step-by-step explanation:

Assuming you mean 9 x 3/5

The answer would be

27/5

in Decimals, it would be

5.4

and in mixed numbers form it would be

5 2/5

8 0
2 years ago
(-31/2)-(-41/4)=-7/2-(17/4)=
Andrew [12]
Just forget about the first half, and just do the second half. It’s way easier. Answer is -7.75
6 0
2 years ago
Kate made tables of values to solve a system of equations. First she found that the x-value of the solutionwas between 0 and 1,
Blizzard [7]

Answer:

  D. (0.6, 1.3)

Step-by-step explanation:

The difference between y-values is smallest for x=0.6. The approximate y-value is reasonably chosen as the average of the y-values for that value of x.

  (x, y) = (0.6, 1.3) is a reasonable approximation

4 0
3 years ago
In the picture shown below, a cube with a side of 2 inches is placed directly on top of a larger cube which has a side of 11 inc
Nat2105 [25]

Answer:

6·2^2 + 6·11^2 + 6·3^2 - 2·2^2 - 2·3^2 = 778 inches²

5 0
3 years ago
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