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antiseptic1488 [7]
3 years ago
13

Plsss help Get brainiest if right!!

Mathematics
2 answers:
marusya05 [52]3 years ago
6 0

Hello!

25 wooden ..... 5.5 hours

x wooden ..... 9.9 hours

_____________________

25/x = 5.5/9.9

25 × 9.9 = x × 5.5

247.5 = x × 5.5

x × 5.5 = 247.5

x = 247.5 : 5.5

x = 45 wooden

Good luck! :)

vodka [1.7K]3 years ago
6 0

Answer:

45

Step-by-step explanation:

In questions such as these it is implied Anita can and does work at a constant rate. Therefore, we can set up the following proportion:

\frac{25}{5.5}=\frac{x}{9.9}, where x represents the number of wooden slats she can paint in 9.9 hours.

Multiplying both sides by 9, we get:

x=\frac{9.9\cdot 25}{5.5},\\x=\boxed{45}

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Find the measure of b, given m∠A = 38°, m∠B = 74°, and a = 31.
Law Incorporation [45]
B = 48.4

Using the Law of Sines, we have

\frac{\sin{A}}{a}=\frac{\sin{B}}{b}
\\
\\ \frac{\sin{38}}{31}=\frac{\sin{74}}{b}

Cross multiplying gives us
b sin 38 = 31(sin 74)

Dividing both sides by sin 38 we have:
(b sin 38)/(sin 38) = 31(sin 74)/(sin 38)
b = 48.4
3 0
3 years ago
A Chinese restaurant offers 10 different lunch specials. Each weekday for one week, Fiona goes to the restaurant and selects a l
Svetach [21]

Answer:

10⁵

Step-by-step explanation:

10×10×10×10×10

= 10⁵ or 100,000

4 0
3 years ago
A - c = d - r, for a
Sedaia [141]

Answer:

a  = d+c - r

Step-by-step explanation:

a - c = d - r

Add c to each side

a - c+c = d - r+c

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7 0
3 years ago
A ball is thrown upward from the top of a building. the function below shows the height of the ball in relation to sea level, ft
ser-zykov [4K]

average rate of change is the slope (of the line) between the two coordinates

f(t) = -16t² + 48t + 100

f(3) = -16(3)² + 48(3) + 100   = -144 + 144 + 100   = 100            (3, 100)

f(5) = -16(5)² + 48(5) + 100   = -400 + 240 + 100 = -60            (5, -60)

m = \frac{y2 - y1}{x2 - x1} = \frac{100 - (-60)}{3 - 5} = \frac{160}{-2} = -80

Answer: -80 ft/sec

4 0
3 years ago
Read 2 more answers
PLEASE HELP ME ASAP I AM STRUGGLING SO MUCH MY WORK IS LITERALLY DUE NOW I'VE BEEN UP ALL NIGHT TRYING TO SOLVE IT AND MY ONLY S
yanalaym [24]
As it is a straight line all the angles add up to 180 so 5s+18+48-a+8a-30= 180 so simplified 12a+36=180 then solve to get a=12.17 so then when u put 12.17 as a you get 5 * 12.17 +8 =78.85 then 48-12.17 which is clearly<78.85 then you do the final angle of 8*12.17-30 which is 67.36 so angle AOC is the biggest
5 0
3 years ago
Read 2 more answers
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