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Katena32 [7]
3 years ago
11

Please help explain this to me | k/7 | + 8=9

Mathematics
2 answers:
german3 years ago
8 0
If youre solving for k
k = 7 & k = -7
mixas84 [53]3 years ago
3 0

Answer:

|k \div 7|  + 8 = 9 \\ k \div 7 = 1 \\ k \div 7 =  - 1 \\ k = 7 \: or \:  - 7

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10% of 65 pls help and explain the steps to get total answer​
sergij07 [2.7K]
10% of 65
Of means multiply
=0.1 x 65
=6.5

Or you can use another way which is (part/whole) *(percent/100)

Whole=65
Percent=10
And part(part of 65)=unknown

(X/65)* (10/100)
Cross multiply
x= 6.5

So 10% of 65 is 6.5
5 0
3 years ago
Does Cos (x+y)=cosx+cosy? Or not?
dangina [55]
\bf \textit{Sum and Difference Identities}
\\ \quad \\
sin({{ \alpha}} + {{ \beta}})=sin({{ \alpha}})cos({{ \beta}}) + cos({{ \alpha}})sin({{ \beta}})
\\ \quad \\
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\\ \quad \\
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4 0
3 years ago
Got another question for you guys! What is 12.5 x 4.2?
yarga [219]

Answer:

52.5

Step-by-step explanation:

3 0
3 years ago
Write and equation to find the nth term of each sequence. Then find a24 <br> -4,-9,-14,-19
rjkz [21]

Answer:

arithmetic progression problem

5 0
3 years ago
A tourist looks out from the observation deck of the Space Needle in Seattle. The deck is at a height of 520 ft. She sees her fr
evablogger [386]

Answer:

40 feet

Step-by-step explanation:

Given : The deck is at a height of 520 ft. She sees her friend on the ground below at an angle of depression of 85.6 degrees.

To Find : What is the distance between the two? Round your answer to the nearest tenth of a foot.

Solution :

Refer the attached figure

Height of deck =AB =520 ft.

Angle of depression ∠C = 85.6°

We are supposed to find length of BC i.e. distance between two.

We will use trigonometric ratios :

tan \theta = \frac{perpendicular}{base}

tan 85.6^{\circ} = \frac{AB}{BC}

12.99615= \frac{520}{BC}

BC= \frac{520}{12.99615}

BC= 40

Thus the distance between two is 40 feet


7 0
3 years ago
Read 2 more answers
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