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adell [148]
3 years ago
5

Help needed! -Thanks​

Mathematics
2 answers:
solong [7]3 years ago
8 0

Answer:

the answer is C.

Step-by-step explanation:

the sum of the problem is 8.164.... so 8/C is the answer

gogolik [260]3 years ago
7 0

Answer:

Point C

Step-by-step explanation:

\sqrt{38} = 6.16441400297 + 2 = 8.16441400297

and point C is the closest to that so 3rd choice is answer

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I need help asap!!!!!
Svetllana [295]
Answer: 130

In order to solve for <4, you need to know that supplementary angles add up to 180°. 
<3 = 50
180 - 50
130

**For future questions**
1. The sum of the interior angles of a triangle is 180°
2. Alternate interior angles are congruent
3. The exterior angle of a triangle is the sum of the nonadjacent interior angles

See attachment below. 

4 0
3 years ago
Find (7*10 to the sixth power) -
Nat2105 [25]
Do 10 to the sixth power first then multiply that by 7 you use PEMDAS
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HELP PLEASE asap AND THANKS WILL GIVE BRAILIEST!!! :)
Ivenika [448]

In standard form it would be x + 2y = 8.

x + 2y = 8

2y = -x + 8

y = -1/2x +4

4 0
3 years ago
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In a pair of complementary angles, the measurement of the larger angle is three times that of the smaller angle. Find the measur
gayaneshka [121]

Answer:

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8 0
3 years ago
A tank initially contains 40 ounces of salt mixed in 100 gallons of water. a solution containing 4 oz of salt per gallon is then
stellarik [79]
Let A(t) be the amount of salt in the tank at time t. We're given that A(0)=40. The rate at which this amount changes is given by

A'(t)=\dfrac{5\text{ gal}}{1\text{ min}}\cdot\dfrac{4\text{ oz}}{1\text{ gal}}-\dfrac{5\text{ gal}}{1\text{ min}}\cdot\dfrac{A(t)\text{ oz}}{100+(5-5)t\text{ gal}}

A'(t)+\dfrac{A(t)}{20}=20

e^{t/20}A'(t)+e^{t/20}\dfrac{A(t)}{20}=20e^{t/20}

\bigg(e^{t/20}A(t)\bigg)'=20e^{t/20}

e^{t/20}A(t)=400e^{t/20}+C

A(t)=400+Ce^{-t/20}

Since A(0)=40, we get

40=400+C\implies C=-360

so that the amount of salt at time t is

A(t)=400-360e^{-t/20}

After 20 minutes, the tank contains

A(20)=400-360e^{-20/20}\approx267.56\text{ oz}
6 0
3 years ago
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