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Katyanochek1 [597]
3 years ago
14

*need help asap!*

Mathematics
1 answer:
Sonbull [250]3 years ago
4 0

Answer:

They are simplified in hopes of finding like terms so we can add or subtract them.

When multiplying or dividing we can multiply or divide the numbers under the radicals before simplifying

Step-by-step explanation:

√8 and √32 are not like terms, so we can't simply add or subtract them.  We first want to reduce them down as much as possible...

√8 + √32  

   √8 = (√4)(√2) = 2√2

       √32 = (√16)(√2) = 4√2

So √8 + √32 is the same as 2√2 + 4√2  

These are now like terms since they share a common number under the radical sign.  

2√2 + 4√2 = 6√2

Multiplying:   (√2)(√2) = √4 = 2

Dividing:  (√16)/(√4) = √4 = 2

                or   (√16)/(√4) = 4/2 = 2

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Rob saves £500 in his bank account.
dmitriy555 [2]

Answer:

step 1: =4% of £500

=20

=20 × 5 years

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=£600 ....therefore Rob will have £600 in his bank account after years.

4 0
3 years ago
A number is 2 hundreds more than 355. What is the number?
Charra [1.4K]
If the number is 200 more than 355, then your number is 555.

How did I get that?
355 + 200 = 555
6 0
3 years ago
A woman invested 3 times as much at 6% as she did at 3%. The total amount of interest she earns in 1 year from both accounts is
aivan3 [116]
882 in one
And 441 in the other (ps. 882 is for 6% and 441 for 3%)
5 0
3 years ago
t takes about 14 person-hours of labor to break up a driveway and clear away the rubble. It takes about 8 person-hours of labor
Ostrovityanka [42]
For this case what you must do is add the number of hours to perform the different activities.
 We have then:
 14 person-hours of labor to break up to driveway and clear away the rubble.
 8 person-hours of labor to pour and smooth concrete for the new driveway.
 Adding both activities we have
 14 + 8 = 22
 answer
 it takes to break up to driveway, clear away the rubble, pour the concrete, and smooth the concrete about 22 person-hours of labor
4 0
3 years ago
Read 2 more answers
The graph shows a fir tree's diameter growth over a 50 year period.
Brilliant_brown [7]

Answer:

The answer is B.) The diameter of the fir tree when planted and 20 inches

Step-by-step explanation:

The y-intercept is the initial diameter of the fir tree (10 inches). At the end of 50 years, the tree's diameter is 30 inches. Therefore, 30 − 10 = 20 inches of growth occurred over the 50 year period. The diameter of the fir tree when planted. The fir tree's diameter was 10 inches when it was planted.

6 0
3 years ago
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