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3 years ago

Solve the system by substitution!

Mathematics

1 answer:

irga5000 [103]3 years ago

3 0

When solving by substation the answer would be: X= 1 , y= 5

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12.

kondaur [170]

Answer:

70kilometers

Step-by-step explanation:

first we must find how much one half of a centimeter is

well, its easy, theres already a half for the distance, and the representation is an even number, so cut it in half.

20-10 is 10

and now the multiplication

20x3=60

60+10=70

70 kilometers

3 0

3 years ago

Fiona was thinking of a number. Fiona doubles it and adds 5.1 to get an answer of 11.5. Form an equation with x

Scrat [10]

Answer:

The equation is 2x + 5.1 = 11.5

Step-by-step explanation:

Given that:

Fiona thinks of a number.

Let,

x be that number.

She doubles the number, therefore

Then she adds 5.1 in the number, thus

2x + 5.1

She gets the answer 11.5, so the equation becomes

2x + 5.1 = 11.5

Hence,

The equation is 2x + 5.1 = 11.5

8 0

3 years ago

Given the median line QR and trapezoid MNOP, what is the value of x? MN=17 QR=x+12 OP=5x-14

kari74 [83]

Answer:
x = 7
MN (first base) = 17 units
OP (second base) = 21 units
QR (median) = 19 units

Explanation:
In a trapezium, the length of the median is equal to half the sum of the two bases.

From the given, we have:
MN (first base) = 17 units
OP (second base) = 5x - 14 units
QR (median) = x + 12 units

Applying the above rule:
median = 0.5 (first base + second base)
x + 12 = 0.5 (17+5x-14)
2(x+12) = 17+5x-14
2x + 24 = 3 + 5x
24-3 = 5x-2x
21 = 3x
x = $\frac{21}{3}$
x = 7

Based on the above, the lengths would be:
MN (first base) = 17 units
OP (second base) = 5x - 14 = 5(7) - 14 = 21 units
QR (median) = x + 12 = 7 + 12 = 19 units

Hope this helps :)

7 0

3 years ago

Read 2 more answers

Please help me!!!!!!

FromTheMoon [43]

Answer:

Step-by-step explanation:

4 0

3 years ago

6.2x + 8 = 3(1.4x -4) What are the steps to solve this problem?

Anettt [7]

Hello friend ,. I hope it's helps you