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N76 [4]
3 years ago
14

Match the expressions with their simplified versions.

Mathematics
2 answers:
oee [108]3 years ago
8 0

Answer are in order from top to bottom

1. 8

2. square of 7

3. 1/2

4. 20

Alenkasestr [34]3 years ago
3 0

Answer:

Step-by-step explanation:

1. 4\sqrt{2}*\sqrt{2} = 4*\sqrt{2}^{2}=4*2=8

2.3\sqrt{7} -2\sqrt{7} =(3-2) \sqrt{7} = 1*\sqrt{7} =\sqrt{7}

3.\frac{\sqrt{7} }{2\sqrt{7} } =\frac{1}{2}

4.2\sqrt{5} *2\sqrt{5} =2*2*\sqrt{5} *\sqrt{5}=4*5=20

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maria wants to save $250. she received $75 in gifts. she makes $8 an hour at work. how many hours at minimum does Mirena have to
denis-greek [22]
75+8x=or greater than 250 
-75                            -75
   8x=or greater than 175
    x=21.875
Maria need to work 22 hours at minimum to reach her goal. 
Hope it help:)
6 0
3 years ago
Read 2 more answers
Find how many quarts of 6?% butterfat milk and 3?% butterfat milk should be mixed to yield 30 quarts of 5?% butterfat milk
Mrrafil [7]

Answer:

The 20  quarts are used for 6% butterfat milk and 10 quarts are used for  3% butterfat milk .

Step-by-step explanation:

As given

6% butterfat milk and 3% butterfat milk should be mixed to yield 30 quarts of 5% butterfat milk .

Let us assume that x quarts are used for 6% butterfat milk .

Than (30 - x) quarts are used for 3% butterfat milk .

6% is written in the decimal form

= \frac{6}{100}

= 0.06

3% is written in the decimal form

= \frac{3}{100}

= 0.03

5% is written in the decimal form

= \frac{5}{100}

= 0.05

Than the equation becomes

0.06 × x + (30 - x) × 0.03 = 30 × 0.05

0.06x + 0.9 - 0.03x = 1.5

0.06x  - 0.03x = 1.5 - 0.9

0.03x  = 0.6

x = \frac{0.6}{0.03}

x = 20 quarts for 6% butterfat milk  .

(30 - x ) = (30 - 20) = 10 quarts for 3% butterfat milk  .

Than 20  quarts are used for 6% butterfat milk and 10 quarts are used for  3% butterfat milk .




5 0
4 years ago
I need help please!:D
klasskru [66]

Answer:ion know

Step-by-step explanation:

5 0
2 years ago
600g of 20% of the normal price of £5
max2010maxim [7]

Answer:

Step-by-step explanation:

600g of 20%

100 - 20 = 80

600 = 80%

/80%

7.5 = 1%

x100

750 = 100%

£750

Sorry I don’t know what else to write. Hopefully, this guarantees you a mark.

7 0
3 years ago
3(h - 7) + 3 = 9 what is H =
MrRissso [65]

Answer:

9

Step-by-step explanation:

3(h-7)+3=9

3h-21+3=9

3h-18=9

3h=9+18

3h=27

h=27/3

h=9

Please mark me as Brainliest if you're satisfied with the answer.

7 0
3 years ago
Read 2 more answers
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