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3 years ago

(20 POINTS) ALGEBRA 1! PLEASE HELP ITS DUE IN A COUPLE MINS!

Mathematics

1 answer:

antiseptic1488 [7]3 years ago

4 0

In height formulas, the last term of the formula is the starting height.

In this equation, the starting height would be 15 meters.

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Find the angle of elevation from the point on the ground 90 feet from the base of a building that is 200 feet tall

DanielleElmas [232]

$Look\ at\ the\ picture.\\\\tg\alpha=\frac{200}{90}\\\\tg\alpha=\frac{20}{9}\\\\tg\alpha=2.222...\\\\\alpha\approx66^o$

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3 years ago

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Which equation is a line that is parallel to the x-<br> axis and passes through the point (5,2)?

Natali [406]

Answer:

y = 2

Step-by-step explanation:

Since the line is parallel to the x-axis,

the gradient, m = 0

From the point, we know that

x = 5

y = 2

So y = 2 is the line that parallel to x-axis

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3 years ago

3 divided by 5 , 654 what is the product of this situation please help me

ohaa [14]

The answer is 0.6 the product is 6 tenths

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3 years ago

What’s 12 away from -6 on a number line?

777dan777 [17]

Answer:

-18

Step-by-step explanation:

you add 12 and six together and you get 18. Then you put a negative sign in front of it

7 0

3 years ago

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Fiona wrote the linear equation y = 2/5 x – 5. When Henry wrote his equation, they discovered that his equation had all the same

Hoochie [10]

we have

$y=\frac{2}{5}x-5$

Let's Isolate the variable y in each of the cases and then compare with Fiona's equation to determine the solution of the problem

case A) $x-\frac{5}{4}y= \frac{25}{4}$

Multiply by $4$ both sides

$4x-5y= 25$

$5y=4x-25$

Divide by $5$ both sides

$y=\frac{4}{5}x-5$

therefore

the case A) is not equal to Fiona's equation

case B) $x-\frac{5}{2}y= \frac{25}{4}$

Multiply by $4$ both sides

$4x-10y= 25$

$10y=4x-25$

Divide by $10$ both sides

$y=\frac{2}{5}x-2.5$

therefore

the case B) is not equal to Fiona's equation

case C) $x-\frac{5}{4}y= \frac{25}{2}$

Multiply by $4$ both sides

$4x-5y= 50$

$5y=4x-50$

Divide by $5$ both sides

$y=\frac{4}{5}x-10$

therefore

the case C) is not equal to Fiona's equation

case D) $x-\frac{5}{2}y= \frac{25}{2}$

Multiply by $2$ both sides

$2x-5y= 25$

$5y=2x-25$

Divide by $5$ both sides

$y=\frac{2}{5}x-5$

therefore

the case D) is equal to Fiona's equation

<u>the answer is</u>

$x-\frac{5}{2}y= \frac{25}{2}$

7 0

3 years ago

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