1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elena55 [62]
3 years ago
10

Serena hits a tennis ball downward from the top of the net at which the angle of

Mathematics
1 answer:
morpeh [17]3 years ago
8 0

Answer:

2.5 meter

Step-by-step explanation:

in a right triangle, tan of an angle  = opposite side /adjacent side

tan 70° = x/ 0.9 , multiply both sides by 0.9

0.9 * tan 70° = x, solve on a calculator

x ≈ 2.5 m

You might be interested in
A gentleman is standing 10 feet from a streetlight. He is 5'6 tall and has a shadow of 24 feet. What is the height of the street
Goshia [24]

Answer:

Height of the streetlight ≈ 8 ft(nearest foot)

Step-by-step explanation:

The doc file displays the triangle formed from the illustration. x is the height of the street light. The distance from the gentle man to the street light is 10 ft. He  has a height of 5.6 ft  and the shadow formed on the ground is 24 ft long. The height of the street light can be calculated below.

The length of the tip of the shadow to the base of the street light is 34 ft. Similar triangle have equal ratio of their corresponding sides .

ab = 5.6 ft

The ratio of the base sides = 24/34

The ratio of the heights = 5.6/x

The two ratio are equal Therefore,

24/34 = 5.6/x

24x = 5.6 × 34

24x = 190.4

divide both side by 24

x = 190.4/24

x = 7.93333333333

x ≈ 8 ft

Height of the streetlight ≈ 8 ft(nearest foot)

Download docx
7 0
2 years ago
Write the expression as the sine or cosine of an angle sin(pi/7) cos(x) + cos(pi/7) sin(x)
Natasha_Volkova [10]

Answer:

\sin(\frac{\pi}{7}+x)

Step-by-step explanation:

We are going to use the identity

\sin(a+b)=\sin(a)\cos(b)+\cos(a)\sin(b)

because this identities right hand side matches your expression where

a=\frac{\pi}{7} and b=x.

So we have that \sin(\frac{\pi}{7})\cos(x)+\cos(\frac{\pi}{7})\sin(x) is equal to \sin(\frac{\pi}{7}+x).

5 0
3 years ago
Each side of a square is increasing at a rate of 6 cm/s. At what rate is the area of the square increasing when the area of the
siniylev [52]

<u>Solution:</u> 48cm/s^2

<u>Working:</u>

A = s^2

Derivate s^2 (as it is area formula) which gives

dA/dt = 2s dL/dt

dL/dt = 6cm/s

Hence,

2(6) = 12

Side: 4cm

Hence,

dA/dt = (4)(12) = 48cm/s^2

<em>Feel free to mark this as brainliest :D</em>

7 0
2 years ago
if i got an 80% on part 1 on my quiz and a 100% on part 2 of my quiz what would be my score in total in percent?
docker41 [41]

Answer: 125%

Step-by-step explanation:

6 0
2 years ago
Two times the sum of a number and 4 is 9.
OleMash [197]

Answer:

2(x+4)

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Garrett chooses to invest $1800 in a simple. The account earns 3% interest over 5 years which equation represents garrets invest
    15·1 answer
  • You are one of 55 people whose name will be drawn for a prize. What is the probability that your name will be drawn first?
    10·1 answer
  • 3 squared times 5 squared
    8·1 answer
  • Which types of reasons are not valid in a mathematical proof?
    6·2 answers
  • If 20% of x is 28, what is 70% of x?
    8·2 answers
  • Someone please help me
    14·2 answers
  • Find the value of the expression 3q - 6 when q = -2
    10·1 answer
  • A farmer decides to sell 32 pounds of his small 96-pound potato crop. What percent of the crop did he sell?
    8·1 answer
  • I need some help with this please
    8·1 answer
  • What is the range of the graph
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!