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DIA [1.3K]
3 years ago
15

2-An 83cm piece is cut from a length of ribbon measuring 1.3 metres. What length is left?

Mathematics
1 answer:
Delvig [45]3 years ago
3 0

Answer:

81.7cm is the length left behind

Step-by-step explanation:

83 -1.3 =81.7

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Two times x is 8 more than y. The sum of x and two times y is 14. Write two equations and graph to find the value of y.
Sauron [17]

Option B: $y=4$ is the value of y

Explanation:

It is given that "Two times x is 8 more than y". Writing it as expression, we have,

2x=8+y

It is also given that "The sum of x and two times y is 14". Writing it as expression, we have,

x+2y=14

To find the value of y, let us solve the two equations using substitution method.

From the equation 2x=8+y , let us find the value of x.

x=\frac{8+y}{2}

x=\frac{8}{2} +\frac{y}{2}

x=4+\frac{y}{2}

Now, substituting x=4+\frac{y}{2} in the equation x+2y=14 , we get,

4+\frac{y}{2}+2y=14

      4+\frac{5y}{2} =14

            $\frac{5 y}{2}=10$

            5y=20

              $y=4$

Thus, the value of y is $y=4$

8 0
3 years ago
A.(x, y) (x -1, y + 4)
attashe74 [19]
The answer is D i believe
8 0
3 years ago
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The graph of f(x) is shown. Estimate f(-3).<br> f(-3) = 1
Effectus [21]

Answer:

There is no graph.

But 1 would be a good estimate if f(-3)=1

Step-by-step explanation:

5 0
3 years ago
$5,000 is invested at 3% interest. How much money must be invested at 5% interest so that the total interest from the two invest
Nataly [62]
3% interest on 5,000 = 150

275 (the total amount wanted) - 150 (from initial investment)= 125

x (5%) =125
x (0.05)= 125
x/0.05)= 125/0.05
x=2500

you need to invest 2500 at 5% to get the additional 125

125 plus 150= 275


7 0
3 years ago
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Find the product for the following expressions: <br> (8c + 2)(5c-7)
Marianna [84]

Answer:40c^2-46c -14

Step-by-step explanation:

(8c+2)*(5c-7)

8c*(5c-7)+2(5c-7)

40c^2-56c+10c-14

40c^2-46c-14

8 0
3 years ago
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