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CaHeK987 [17]
3 years ago
11

Please help and thank you

Mathematics
2 answers:
tatiyna3 years ago
5 0

Answer:

b_{1}=\frac{2A}{h}-b_{2}

Step-by-step explanation:

Given: A=\frac{1}{2}(b_{1} +b_{2})h

We need to completely isolate b_{1} to solve.

A=\frac{1}{2}(b_{1} +b_{2})h

A=(\frac{1}{2}b_{1} +\frac{1}{2} b_{2})h

A=\frac{1}{2}b_{1} h+\frac{1}{2}b_{2}h

-\frac{1}{2}b_{1}h+A=\frac{1}{2}b_{2}h

-\frac{1}{2}b_{1}h=-A+\frac{1}{2}b_{2}h

-\frac{1}{2}b_{1}=\frac{-A}{h}+\frac{1}{2}b_{2}

Finally, multiply both sides by -2 to completely isolate b_{1}.

b_{1}=\frac{2A}{h}-b_{2}

Marysya12 [62]3 years ago
4 0
<h2>Answer:</h2>

<u>The right option is </u><u>D</u>

<h2>Step-by-step explanation:</h2>

See the image

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Novosadov [1.4K]

Answer:

5% of his coins is 7

Step-by-step explanation:

140 X 0.05 = 7

7 0
1 year ago
-1/2x + 6 &lt; 4x - 3<br> i need to find the value of X with step-by-step explanation
WITCHER [35]

Answer:

x > 2

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7 0
2 years ago
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luda_lava [24]

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3 0
3 years ago
1. What is the measure in radians for the central angle of a circle whose radius is 6 cm and intercept arc length is 5.4 cm?
fgiga [73]
Hello!

1.
find circumferece
c=2pir
c=2*6*pi=12pi
intercept is 5.4

2pi radians=all

part/whole=part/whole
5.4/12pi=x/2pi
times both sides by 12pi
5.4=6x
divide both sides by 6
0.9=x
answer is 0.9 radians



2. 
assuming 9pi/5 radians

find circumference
c=2pir
c=2*26.9*pi
c=53.8pi

arc/circumference=(9pi/5)/2pi

x/(53.8pi)=(9pi/5)/(2pi)
x/(53.8pi)=18/5
times both sides by 53.8pi
x=608.46266 m
about x=608.46 m


Hope this Helps! Have A Wonderful Day! :) 
5 0
3 years ago
What is 18-4d equal to
jeka94
I think 14d hope this helps
6 0
3 years ago
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