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Paha777 [63]
3 years ago
11

Please help!! I’ll mark you as brainliest if correct

Mathematics
1 answer:
Vinvika [58]3 years ago
6 0

Answer:

n(n-1)/2 use this. U may check for 5

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What is the value of the expression. (-8+4)- (3-9)
Mekhanik [1.2K]

Answer:

2

PLZ MARK BRAINLIEST

Step-by-step explanation:

(-8+4) - (3-9) = (-4) - (-6) = -4 + 6 = 2

7 0
3 years ago
Julia is standing 2 feet away from a lamppost. If she casts a shadow of 5 feet and the light makes a 20° angle relative to the g
givi [52]

Answer:

2.5477 feet

Step-by-step explanation:

Refer the image attached to understand my solution.

BC = height of lamppost.

DE = Julia

AD = shadow of Julia

BD = 2 feet.      AD = 5 feet

BA = BD + AD

       = 2 + 5 = 7 feet

In ΔABC

tan 20° = \frac{BC}{BA}  = \frac{BC}{7}

BC = 7 * tan 20°

BC = 2.5477 feet

SO the height of lamppost = 2.5477 feet

5 0
3 years ago
jonah wants to buy two copies of a book. which algebraic expression could jonah use to find the value of the items
Bezzdna [24]
2x because its 2 times the price of the book (x)
5 0
3 years ago
Alonzo went to a baseball game. The game started at 10:50 AM, and it was 3 hours 27 minutes long. When did the game end? PLEASE
sattari [20]
The answer is 2:17pm
8 0
3 years ago
Read 2 more answers
You have to fill in the blank for this one 4/9 divided by blank equals 12
photoshop1234 [79]

For this case, the first thing we must do is define a variable.

We have then:

x: unknown number

We now write the expression that models the problem:

\frac{\frac{4}{9}}{x} = 12

From here, we clear the value of x.

We have then:

\frac{4}{9}=12x

\frac{4}{9(12)}=x

x=\frac{4}{108}

x=\frac{1}{27}

Answer:

4/9 divided by 1/27 equals 12

6 0
3 years ago
Read 2 more answers
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