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Brrunno [24]
2 years ago
15

Select the correct answer.

Mathematics
2 answers:
arlik [135]2 years ago
6 0

Option B is correct

Why

3x=21

3(7) =21

21=21

Step-by-step explanation:

kolbaska11 [484]2 years ago
5 0

Answer:

-3x=21 , -7

Step-by-step explanation:

-3x=21\\x=\frac{21}{-3} =-7

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LIKE I ACTUALLY NEED HELP THIS IS LITERAL TESTING NOT NO QUIZ.
Mekhanik [1.2K]

Answer:

2 because if x=0 y=1 and 2 is closest so a and b

4 0
3 years ago
A statue is mounted on top of a 21 foot hill. From the base of the hill to where you are standing is 57feet and the statue subte
AleksandrR [38]

Please find the attached diagram for a better understanding of the question.

As we can see from the diagram,

RQ = 21 feet = height of the hill

PQ = 57 feet = Distance between you and the base of the hill

SR= h=height of the statue

\angle SPR=Angle subtended by the statue to where you are standing.

\angle x=\angle RPQ= which is unknown.

Let us begin solving now. The first step is to find the angle \angle x which can be found by using the following trigonometric ratio in \Delta PQR :

tan(x)=\frac{RQ}{PQ} =\frac{21}{57}

Which gives \angle x to be:

\angle x=tan^{-1}(\frac{21}{57})\approx20.22^{0}

Now, we know that\angle x and \angle SPR can be added to give us the complete angle \angle SPQ in the right triangle \Delta SPQ.

We can again use the tan trigonometric ratio in \Delta SPQ to solve for the height of the statue, h.

This can be done as:

tan(\angle SPQ)=\frac{SQ}{PQ}

tan(7.1^0+20.22^0)=\frac{SR+RQ}{PQ}

tan(27.32^0)=\frac{h+21}{57}

\therefore h+21=57tan(27.32^0)

h\approx8.45 ft

Thus, the height of the statue is approximately, 8.45 feet.

3 0
3 years ago
How do u simlpify 6feet/8yards?
Julli [10]
Well, there are 3 feet in a yard. So, 3ft=1yrd. Multiply the length value by 3. You could also multiply 3 by the # of yards (or in this situation, 8) Is that good enough?
5 0
3 years ago
( _ + i ) + ( 4 _ ) = 10 - 7i
Margaret [11]
2 8 if not I’m so sorry pls forgive me
4 0
3 years ago
Plz help me!!
zmey [24]
Y> -4a=36 or 36=-4a< y
3 0
3 years ago
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