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MariettaO [177]
3 years ago
8

Help a broooo outttt

Mathematics
1 answer:
fiasKO [112]3 years ago
7 0

Answer:

42

Step-by-step explanation:

Let the missing length be represented as "x".

Based on the angle bisector theorem, we have the following equation:

x/21 = 30/15

x/21 = 2/1

Cross multiply

x*1 = 2*21

x = 42

Missing length = 42

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1.5.PS-21
dybincka [34]

Answer:

Increase in the length of one side = 3.8 ft

Step-by-step explanation:

Yossi has garage whose area is 280 ft²

After rebuilt their is increment in area by 50%

New Area = 280 × 150% = 420 ft²

Also we know that Area of Square = (Length) × (Length)

⇒ Length of Newly built garage = √420 = 20.5 ft

and Length of Originally garage = √280 = 16.7 ft

⇒ Increase in the length of one side = 20.5 - 16.7 = 3.8 ft

6 0
3 years ago
Line K passes through the points (6,3) and (-2,-4) what is the slope perpendicular to K
Afina-wow [57]

-8/7

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rise over run the slope of K is 7/8

perpendicular is the negative inverse of the slope so it ends up as -8/7

6 0
3 years ago
Which is an enequality
katen-ka-za [31]

Answer:

b

Step-by-step explanation: I dont have an explanation for u ho3

6 0
2 years ago
Read 2 more answers
Consider a civilization broadcasting a signal with a power of 2.0×104 watts. The Arecibo radio telescope, which is about 300 met
Vitek1552 [10]

For light: Inverse Square Law 

<span>
The signal is weaken by the inverse square of the difference of distances this means that one over the square of the difference. </span>

<span>
</span>

Therefore, 70000LY / 141 LY =496.45 and that squared =246462.602 times less signal, or 1/246462.602.


 2 For a circular telescope like the Arecibo radio telescope that equals Pi times the radius squared. Sensitivity of the telescope depends on its area.<span>
The new telescope needs 246462.60 times that area to have enough sensitivity </span>

<span>
<span>(150 x 150 x Pi) = 70 685 sq m area for the Arecibo telescope and that times 246462.60
= 1.74212 x 10^10</span></span>

<span><span>
</span></span>

What is the diameter of a circle with that area?

 <span>
<span>1. Divide the area by Pi = 5.548156 x 10^9
2. Take the square root of the result to find the radius = 74485.94293</span></span>

3. Multiply by 2 to find the diameter = <span>148971.886</span>

7 0
3 years ago
the blue jar has 27 more coins than the red jar. if there are a total of 193 coins, how many coins are in each jar
V125BC [204]
X - red jar
x+27 - blue jar

x+x+27=193\\&#10;2x=166\\&#10;\boxed{x=83}\\&#10;\boxed{x+27=110}
4 0
3 years ago
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