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Pavel [41]
3 years ago
8

8.2 + 3.9y − 0.5(8y − 9) simplified

Mathematics
2 answers:
pashok25 [27]3 years ago
8 0

Answer:

Step-by-step explanation:

9.4x+6.4y

BabaBlast [244]3 years ago
3 0

Step-by-step explanation:

8.2 + 3.9y - 0.5(8y - 9)

= 8.2 + 3.9y - 4y + 4.5

= 3.9y - 4y + 8.2 + 4.5

= -0.1y + 12.7

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An LCD TV is on sale for 24% off. If the original price was $800, find the sales price.
Cloud [144]

24% = 0.24

multiply that by the price:

800 * 0.24 = 192 ( discount)

800-192 = $608 sale price

3 0
3 years ago
Read 2 more answers
Describe a way to make the arithmetic problem 45% x 680 mentally
lord [1]

Answer:

306.

Step-by-step explanation:

Firstly, we are aware 100% of 680 is obviously 680,

Next, we know half of a 100% is 50% therefore half of 680 is 340.

Then, we know 45% is 5% less than 50%

To find 5% of a number mentally, divide it by 10 as 100÷5=20

680÷20=34

Lastly 50% subtracted by 5%: 340-34=306.

Now we know, 45% of 680 is 306.

<em>Hope this helps.</em>

<em>Hope this helps.Please mark BRAINLIEST.</em>

5 0
3 years ago
use the substitution method to solve the system of equations. Choose the correct ordered pair. y=4x 8x+y=18
tino4ka555 [31]

Answer:

(3/2, 6)

Step-by-step explanation:

y = 4x

8x + y = 18

this says y is 4x so you can replace y with 4x

8x + 4x = 18

12x = 18

/12      /12

  x  = 3/2


now sub x into y = 4(3/2)

y = 12/2

y = 6

8 0
3 years ago
Read 2 more answers
Lines a and b are parallel.
Wittaler [7]

m and 125º are supplementary angles:

m + 125º = 180º

m = 180º <span>– 125º

</span>m = 5<span>5º  <</span>——<span>—    this is the answer.


I hope this helps. =)

</span>
6 0
3 years ago
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A rectangular fish tank has a base that is 8 inches by 7 inches. How much water will it take to fill the tank to a depth of 5 in
Blizzard [7]
V=LWH
L=8
W=7
H=5

V=8*7*5=280 in^3

you need 280 in^3 of water
5 0
4 years ago
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