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Lemur [1.5K]
3 years ago
10

√5/49+√20/49−2√45/49

Mathematics
1 answer:
algol133 years ago
4 0

Answer:

-0.136

Step-by-step explanation:

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You can make 6 full servings of bibimbap. 1/5 cup of rice is left over.
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Which of the following is a subset of {1, 2, 3}?
KATRIN_1 [288]
It is the third option: {1, 2, 3}
5 0
3 years ago
Read 2 more answers
HELP NEEDED ASAP! 30 points “Angle DAC is A. An interior, B. A corresponding, C. An alternate interior, or D. An exterior angle
ludmilkaskok [199]

Answer:

Angle DAC is an exterior angle (because it son the exterior of the triangle) and idk the choices for the measure of Angle DAC are.... but i know that X is equal to 119 beacse that line its on makes a 180 degree line with 61. so 180-61 is equal to 119

5 0
3 years ago
(20 pts!) if the base of the roof has length 40 feet and x=30, which of the following gives the height of the roof?
musickatia [10]

Answer:

23.094 ft approximately

(If you want your answer in a different format, let me know please.)

Step-by-step explanation:

I would have solve this using tangent since the side opposite to x is asked for and the adjacent side to side is given as having a measurement of 40 ft.

But I think they want you to use the formula:

l=\frac{b}{\cos(x)}.

l=\frac{40}{\cos(30)}

Input into calculator:

l=46.188 (approximation)

l represents the length of the roof.

So we have l=46.188 and b=40.

We must use the Pythagorean Theorem to find the height,h, for of the roof.

l is the hypotenuse.

h^2+40^2=46.188^2

h^2+1600=2133.331

Subtract 1600 on both sides:

h^2=533.331

Take square root of both sides:

h=23.094

The answer is 23.094 feet for the height that roof reaches on the building.

I want to show you another way:

\tan(x)=\frac{\text{opposite}}{\text{adjacent}}

\tan(30)=\frac{h}{40}

Multiply both sides by 40:

40\tan(30)=h

Input into calculator:

23.094=h

I didn't do it this way because your problem suggested you use their formula to find the height.

8 0
3 years ago
Read 2 more answers
??????????? ?????????
andre [41]

Answer:

C

Step-by-step explanation:

ok so they want you to put everything but y on one side

to get rid of the -4, you add 4 to both sides

you are then left with

2/3y=x+4

multiple both sdies by 3/2

y= 3(x+4)/2

divide everything by 2

y=3/2x+6

C

5 0
3 years ago
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