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masha68 [24]
3 years ago
12

Use the tangent to find the length of side QR. Express your answer to the nearest tenth. The length of side QR is approximately

_____ units.

Mathematics
1 answer:
Arada [10]3 years ago
4 0

Answer:

3.9

Step-by-step explanation:

tan = opposite side/adjacent side

tan 61 = 7.1/QR

QR tan 61 = 7.1

QR = 7.1/tan 61

     = 3.9

Note:  If you memorize the definitions of all the trig functions, then these kinds of problems will be much easier.  OK?

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What is the length of bc in the right triangle below? ​
Nadusha1986 [10]

Answer: A) 15

Step-by-step explanation:

Because of Pythagorean Theorem, 9^2+12^2=BC^2.  Thus, 81+144=BC^2.  Thus, 225=BC^2.  Thus, 15=BC.

Hope it helps, and ask if you want further clarification <3

4 0
4 years ago
What is the slope of EC?
Nezavi [6.7K]

its the first option

3 0
3 years ago
Read 2 more answers
Alicia uses 3/4 gallon of paint to paint her room. Becca uses for 4/5 gallon more than Alicia to paint her room. How many gallon
Maurinko [17]

Answer:

23/10 gallons

Step-by-step explanation:

Alicia uses 3/4 gallon of paint to paint her room.

Alicia use = 3/4 gallon of paint

Becca uses for 4/5 gallon more than Alicia to paint her room.

Becca uses = Alicia (3/4 gallons ) + 4/5

Becca uses = \frac{3}{4} + \frac{4}{5}

Total paint used together = Aliccia used + Becca used

\frac{3}{4}+\frac{3}{4} + \frac{4}{5}

Add like fractions 3/4 + 3/4 becomes 6/4

\frac{6}{4} + \frac{4}{5}

Make the denominators same

\frac{6*5}{4*5} + \frac{4*4}{5*4}

\frac{30}{20} + \frac{16}{20}

\frac{46}{20}

Divide top and bottom by 2

\frac{23}{10} gallons



6 0
3 years ago
Fill in the symbol to make the inequality match the statements.
Alenkasestr [34]

Answer:

p > d

c < p

Step-by-step explanation:

8 0
3 years ago
(94 -81 z)^3, when z = 25
julsineya [31]
(94 - 81z)³
(94 - 81(25))³
(94 - 2,025)³
(-1931)³
-7,200,237,491
5 0
3 years ago
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