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Damm [24]
3 years ago
12

HELP HELP PLEASE IMPORTANT

Mathematics
1 answer:
Yuliya22 [10]3 years ago
6 0

Answer:

2010

Step-by-step explanation:

1/2(24)(20)=240

50*45=2250

2250-240=2010

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Are the lines in the diagram perpendicular, parallel, skew, or none of these?
ivolga24 [154]
<span>Are the lines in the diagram perpendicular, parallel, skew, or none of these?

l and m: neither
l and m intersect, but are not perpendicular. 

l and n: skew
l and n are not parallel, but they do not intersect because they are not on the same plane. 

m and n: perpendicular.
m and n intersect at a right angle</span>
5 0
3 years ago
Read 2 more answers
PLEASE HELP ME NOW!!
puteri [66]

Answer:

x=4+-2\sqrt{7}

Step-by-step explanation:

To solve, we need to take square root of both sides first:

(x-4)^2=28\\\sqrt{(x-4)^2} =+-\sqrt{28} \\x-4=+-\sqrt{28}

Now we use the property of radical shown below to simplify square root of 28:

Property:  \sqrt{x*y}=\sqrt{x} \sqrt{y}

Now, we have:

x-4=+-\sqrt{28}\\x-4=+-\sqrt{4*7}\\x-4=+-\sqrt{4}\sqrt{7}\\x-4=+-2\sqrt{7}

Now we take 4 to the other side and isolate x:

x-4=+-2\sqrt{7} \\x=4+-2\sqrt{7}

first answer choice is right.

4 0
3 years ago
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An electrical heating element produces heat depending on the resistance of the element and the current passed through it. The he
vredina [299]
The heat produced by current I is
H = I²R
where
R =  resistance.
According to the formula, heat produced is proportional to the square of the current.

When a current of I = 2 amps is applied, the heat produced is 
H = 10x³ + 80.
This heat includes heat due to a fixed current of 2 amps, and heat due to a variable current of x amps.

Because the heat produced is proportional to the square of the current, write the expressions as
H = (10x)*(x²) + 20*(2²)

The second term on the right is heat due to the fixed current of 2 amps, written as
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The first term represents heat due to variable resistance, written as
(10x)*(x²).
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Answer:
The variable current is  10x.
6 0
3 years ago
A football quarterback enjoys practicing his long passes over 40 yards. He misses the first pass 40% of the time. When he misses
dangina [55]

Answer:

8% or 0.08

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Probability of missing the first pass = 40% = 0.40

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i.e.

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5 0
3 years ago
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7.675 inches of rain was the total amount in the two weeks
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