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kicyunya [14]
2 years ago
13

Help!!!!8 points!!!!

Mathematics
1 answer:
balandron [24]2 years ago
4 0
It’s the 3rd one because it is the one that makes sense
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6.184×105=
9966 [12]

Answer:

649.32

Step-by-step explanation:

7 0
3 years ago
Jane works twice as fast as her daughter Anna. If it takes 15 minutes to clean the kitchen together, how long would it take Anna
Sonbull [250]
Here, Twice fast means, she takes half time in doing same amount of work.
Let, Anna takes = 2t & Jane takes = t

It would be: 1/t + 1/2t = 1/15
2t + t / 2t² = 1/15
15(3t) = 2t²
2t² = 45t
Divide both sides by t, 
2t = 45
t = 45/2
t = 22.5
& 2t = 22.5(2) = 45

In short, Anna would take 45  minutes

Hope this helps!
7 0
3 years ago
What is 0.7b^3•0.4b^9
Dennis_Churaev [7]

It's an expression that can be simplified to read

       ( 0.7  x  0.4 ) ( b³  x  b⁹ )

   =  (      0.28    )  (    b¹²      )  =  0.28 b¹² .

4 0
3 years ago
Please i need help finishing this test i’ll give brainly to a correct answer
rjkz [21]

imma go with my gut and say b :?

7 0
2 years ago
Angel works in a dentist’s office making $13.50 an hour. She works 40 hours per week. How much does she make in a year?
-Dominant- [34]
This is a 2 part question, so we will go step by step

Since Angel makes 13.50 an hour, and she works 40 hours a week, we have to make an equation and solve it. 


First, let's make the equation, and we should multiply. Why?

Because finding out how much she made in a week would make it easier to find out how much she makes in a year. To find out how much she makes in a week, we need to add 13.50 40 times, and multiplication is an easier way of doing that.

Now to set it up, 40 is the number we are multiplying by (Because 40 is how many hours she works, and 13.50 is how much she makes in that hour)

and 13.50 is the number getting multiplied

Now we insert numbers into typical multiplication format

13.50 x 40 = ?

Now we solve

13.50 x 40 = 540

So she makes 540 dollars in a week, now we need to multiply that by the number of weeks they are in a year and we are done.

With a little help from Google, we can learn that there are in 52.1 weeks<span> in a common year. 

Now we do the same thing we did the last time and insert our numbers into the equation.

(52.1 is what we are multiplying by, and 540 is the number that is getting multiplied.)

540 x 52.1 = ?

Solve

</span>540 x 52.1 = 28,134

She makes <span>28,134 in a year
</span>
Hope this helped!

3 0
3 years ago
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