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MariettaO [177]
3 years ago
10

What is 39,800,000 in scientific notation PLS HELP

Mathematics
2 answers:
Umnica [9.8K]3 years ago
6 0

Answer:

3.98x10^7Step-by-step explanation:

Mashutka [201]3 years ago
3 0

Answer:

3.98 x 10^7

Step-by-step explanation:

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Find the sum: -11 + (-8)
Kipish [7]

Answer:

-19

Step-by-step explanation:

-11+(-8)

-11-8

-19

hole this is correct

3 0
2 years ago
What is the first quartile of this data set?<br> 10, 11, 12, 15, 17, 19, 22, 24, 29, 33, 38
seraphim [82]

Answer:

I believe it would  be 12

Step-by-step explanation:

5 0
3 years ago
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Mai Finished her math assignment 3/5 hours. then she completed her English assignments in 1/3 hours. what was the total amount
algol13
4/15 is the answer!!!!
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2 years ago
Help fast! Determine which lines, if any, must be parallel. Check all that apply.
Vanyuwa [196]

Answer:

a b m n

Step-by-step explanation:

8 0
3 years ago
SOMEONE PLEASE HELP ME! I have a few of the explanations but I'm not sure if I need more please suggest some thank you
lesantik [10]

Answer:

For tingle #1

We can find angle C using the triangle sum theorem: the three interior angles of any triangle add up to 180 degrees. Since we know the measures of angles A and B, we can find C.

C=180-(A+B)

C=180-(21.24+27.14)

C=131.62

We cannot find any of the sides. Since there is noting to show us size, there is simply just not enough information; we need at least one side to use the rule of sines and find the other ones. Also, since there is nothing showing us size, each side can have more than one value.  

For triangle #2

In this one, we can find everything and there is one one value for each.

- We can find side c

Since we have a right triangle, we can find side c using the Pythagorean theorem

b^2=a^2+c^2

4^2=2^2+c^2

16=4+c^2

12=c^2

c=\sqrt{12}

c=2\sqrt{3}

- We can find angle C using the cosine trig identity

cos(C)=\frac{adjacent}{hypotenuse}

cos(C)=\frac{2}{4}

C=arccos(\frac{2}{4} )

C=60

- Now we can find angle A using the triangle sum theorem

A=180-(B+C)

A=180-(90+60)

A=30

For triangle #3

Again, we can find everything and there is one one value for each.

- We can find angle A using the triangle sum theorem

A=180-(B+C)

A=180-(90+34.88)

A=55.12

- We can find side a using the tangent trig identity

tan(C)=\frac{opposite-side}{adjacent-side}

tan(34.88)=\frac{7}{a}

a=\frac{7}{tan(34.88)}

a=10.04

- Now we can find side b using the Pythagorean theorem

b^2=a^2+c^2

b^2=10.04^2+7^2

b^2=149.8

b=\sqrt{149.8}

5 0
3 years ago
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