3 years ago

(Plz answer)

Mathematics

1 answer:

Mrac [35]3 years ago

5 0

The first is wrong

Second is right

Third is wrong

Fourth is right

Fifth is right

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A carpenter is constructing staircase in a house. The distance from the floor to the basement is 10.8 feet. The staircase will b

konstantin123 [22]

Answer:

$\theta = 40.59^\circ$

Step-by-step explanation:

Given

The question is illustrated with the attached image

Required

Find $\theta$

To do this, we use sine formula

i.e.

$\sin(\theta) = \frac{Opposite}{Hypotenuse}$

So, we have:

$\sin(\theta) = \frac{10.8}{16.6}$

$\sin(\theta) = 0.6506$

Take arc sin

$\theta = \sin^{-1}(0.6506)$

$\theta = 40.59^\circ$

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2 years ago

Jonas bought 3 books. Each book was the same price. He also used a coupon that takes $20 off the total cost. What expression can

Mademuasel [1]

let x = the price of a book

so you would have

total = 3x-20

3 0

3 years ago

Please help!!

wolverine [178]

You would say
Measure of angle a I t
If it just has the angle then angle a i t
If it is just a I t then a I t
To say mMeasure if angle a i t plus measure of angle r I t
You say each individual letter and not together so for example instead of

4 0

2 years ago

Simplify: 3a + 5a 20points

Ber [7]

Answer: 8a

Step-by-step explanation:

3a + 5a

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2 years ago

Re-write the quadratic function below in Standard Form y=-5(x+1)²+7

Arturiano [62]

Answer:

y = - 5x² - 10x + 2

Step-by-step explanation:

y = - 5(x + 1)² + 7 ← expand (x + 1)² using FOIL

= - 5(x² + 2x + 1) + 7 ← distribute parenthesis by - 5

= - 5x² - 10x - 5 + 7 ← collect like terms

= -5x² - 10x + 2 ← in standard form

7 0

10 months ago

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