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SVETLANKA909090 [29]
3 years ago
12

PLEASE HELP

Mathematics
1 answer:
WINSTONCH [101]3 years ago
8 0
A) Total cost of materials: 145.86 + 52.91 + 17.63 = $216.40
b) Percent cost of hardware: 17.63/216.40 = 0.081
c) Percent cost paint and hardware: (17.63 + 52.91)/216.40 = 0.326
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Which of the ordered pairs is a solution to the system of inequalities? y > 5 y ≥ x (0, 0) (4, 5) (-5, 4) (-5, 6)
yKpoI14uk [10]

Plug the y value in for y and plug the x value in for x

> less than

<u>></u> less than or equal to

Example:

(4,5)

y > 5y <u>></u> x

5 > 5x5 <u>></u> 4  =  5 > 25 <u>></u> 4  =  false

they all should be false

if one had to be correct, I would say (0, 0)

3 0
3 years ago
7. If every short side is 1.5 inches and every long side is 3 inches, what is the perimeter?
hjlf
The answer 2 your question is 24in
6 0
3 years ago
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PLEASE HELP ME!!!!! Factor completely b^4 − b^3 + b − 1
Afina-wow [57]
<span>b^4 − b^3 + b − 1
=(</span><span>b^4 − b^3) + (b − 1)
= b^3(b - 1) + (b - 1)
=(b - 1)(b^3 + 1)</span>
7 0
3 years ago
Cos (-Ø)= √3/3 sinØ &lt;0 what is the value of sinØ?
Inga [223]

Answer:

sin∅= - √6/3

Step-by-step explanation:

Trigonometric function cos is even function which mean:

cos (-∅) = cos ∅

Trigonometric function sin is odd function which mean:

sin (-∅) = - sin∅  => sin∅ < 0

The basic trigonometric equation reads in this case with angle marked ∅:

sin²∅ + cos²∅ = 1  => sin²∅ = 1 - cos²∅ => sin²∅ = 1 - ( √3/3 )² =>

sin²∅ = 1 - (3/9) => sin²∅ = 1 - (1/3) = (3/3) - (1/3) = 2/3 => sin∅ = - √(2/3) =>

sin∅ = - √2/√3 => sin∅ = - √6/3

God with you!!!


3 0
3 years ago
Help fast plsssssssssss
bearhunter [10]
-9-(-12)=-9+12=3
-9-12=-9+(-12)=-21
4 0
3 years ago
Read 2 more answers
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