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Juliette [100K]
3 years ago
13

What’s 23-(+25)-(-7)

Mathematics
1 answer:
Tamiku [17]3 years ago
4 0

Answer: It =5

Can I get brainliest please and thank you :)

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A forest ranger spots a fire from a 115 meter tall tower. The angle of depression from the forest ranger to the fire is 28o. Wha
nikklg [1K]

Answer:

61.15 m

Step-by-step explanation:

From trigonometry :

Tan x = opposite / Adjacent

x = 28°

Tan 28 = distance from base to fire / height

0.5317094 = distance from base to fire / 115

distance from base to fire = 115 * 0.5317094

distance from base to fire = 61.15 m

4 0
3 years ago
Expand using the identity ( 2x + 3y)^2
drek231 [11]

<em>Hi there!</em>

<em>~</em>

<em></em>( 2x + 3y)^2<em></em>

<em></em>= (2x + 3y) (2x + 3y)\\= (2x)(2x)+ (2x) (3y) + (3y)(2x) +(3y)(3y)\\=4x^2 + 6xy + 6xy + 9y^2\\= 4x^2 + 12xy + 9y^2<em></em>

<em>Answer : </em>4x^2 + 12xy + 9y^2<em></em>

<em>Hope this helped you!</em>

<em></em>

<em></em>

8 0
4 years ago
Read 2 more answers
Consider the system of equations:
vodka [1.7K]

Answer:

(x, y) = (5, 1)

Step-by-step explanation:

To <em>eliminate</em> x, you can double the second equation and subtract the first.

... 2(x +4y) -(2x -3y) = 2(9) -(7)

...11y = 11 . . . . . simplify

... y = 1 . . . . . . divide by 11

Using the second equation to find x, we have ...

... x + 4·1 = 9

... x = 5 . . . . . subtract 4

_____

<u>Check</u>

2·5 -3·1 = 10 -3 = 7 . . . . agrees with the first equation

(Since we used the second equation to find x, we know it will check.)

5 0
4 years ago
Read 2 more answers
Write the equation in slope-intercept form using y=mx+b​
cricket20 [7]
The equation in slope intercept form is y= 1x - 70
5 0
3 years ago
How to do hire purchase
irinina [24]

Answer:

With hire purchase you hire an item (a car, a laptop, a television) and pay an agreed amount in monthly payments. You do not own the item until you have made the final payment. Personal Contract Plans (PCPs) are a type of hire purchase agreement

Step-by-step explanation:

pls mark me as branlist thx

5 0
3 years ago
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