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klio [65]
3 years ago
6

Solve for x 7(3-x) = 8(4-2x)

Mathematics
1 answer:
Damm [24]3 years ago
7 0

Answer:

  x = 11/9

Step-by-step explanation:

Eliminate parentheses, add 16x, subtract 21.

  7(3 -x) = 8(4 -2x) . . . . given

  21 -7x = 32 -16x . . . . . eliminate parentheses using the distributive property

  9x +21 = 32 . . . . . . . . add 16x

  9x = 11 . . . . . . . . . . . . subtract 21

  x = 11/9 . . . . . . . . . . . .divide by the coefficient of x

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A market buys watermelons for $1.25 they want to make a 20% profit what should they charge for the watermelons
Serhud [2]

Answer: $1.50

Step-by-step explanation:

Cost price of watermelon = $1.25

Profit percent = 20%

Profit = Profit percent × Cost price

= 20% × $1.25

= 20/100 × $1.25

= 0.2 × $1.25

= $0.25

Selling price = Cost price + Profit

Selling price = $1.25 + $0.25

Selling price = $1.50

They should charge $1.50 for the watermelons

6 0
3 years ago
An object is moved at a constant speed of 20m/s for 4s
konstantin123 [22]

Answer:

80 m is distance traveled

Step-by-step explanation:

if object moves at 20m/s, then in 4 seconds the expression 20 x 4 is used to get 80. 80 m traveled

3 0
2 years ago
Can u guys help me with #1 plz guys now
myrzilka [38]
3

the area is 41.6cm which is 1foot  4 3/8 inches.

So 6in + 6in + 6in = 1ft 6in, which will be enough to cover the floor.
3 0
3 years ago
The _____ is the price of an item that is being offered at a lower price than usual.
Svetlanka [38]

Answer:

sale price

Step-by-step explanation:

price of an item that is being offered at a lower price than usual

8 0
2 years ago
Let u = <6, -9>, v = <1, -4>. Find u - v.
melamori03 [73]
To subtract vectors, subtract the x coordinates together. Do the same for the y coordinates as well.

In terms of a formula if we had the vectors u and v such that
u = <a,b>
v = <c,d>
then 
u - v = <a-c, b-d>

Let's use that to get...
u - v = <6,-9> - <1,-4>
u - v = <6-1,-9-(-4)>
u - v = <6-1,-9+4>
u - v = <5,-5>
----------------------
Answer: A) <5,-5>

3 0
3 years ago
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