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Tresset [83]
3 years ago
9

Please I really need help answer question 2.

Mathematics
1 answer:
kati45 [8]3 years ago
4 0
Let the number of CD's be x and total cost be y

y=7x-10

*the 7 comes from the price of each individual CD ($7)
*the 10 comes from the discount ($10)

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6/7k=6 i really need help
crimeas [40]
So k=1000 like 4k=4 000 so 6/7 of a thousnad =0.857142857 so times 6=0.857142857
4 0
3 years ago
Read 2 more answers
19. If 1:3=4:x, then what is the value of x<br>9<br>12<br>4/3<br><br>15​
gulaghasi [49]

Answer:

Step-by-step explanation:

1 : 3 : : 4: x

Multiply 1 and x and multiply 3 and 4

x = 12

7 0
3 years ago
En said the value of the expression 72-8^2 +6*3 is 50. What mistake did Ben make? Correct Ben’s mistake and give the value of th
posledela

Given:

72-\frac{8}{2}+6\times3

He does mistake in the order of giving preference.

We should give preference in the order, division, multiplication, addition, subtraction.

But, he gave the first preferrence to the subtraction.

72-8=64

Next, he used division

64/2=32

Next he adds 32 with 8.

So, he gets 50.

But the actual simplification is,

Simplifying we get,

\begin{gathered} 72-\frac{8}{2}+6\times3=72-4+18 \\ =68+18 \\ =86 \end{gathered}

Hence, the correct value of the expression is 86.

7 0
1 year ago
Select the best possible first step to solving the system by first eliminating the x variable.
zheka24 [161]
It seems to be none of the above
3 0
3 years ago
What is the area of 5m, 17m, 8m, and 5m, the shape is a kite
Andrei [34K]

Answer:

It can't be a kite. A kite has 2 pairs of equal sides.

Step-by-step explanation:

4 0
2 years ago
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