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Lina20 [59]
3 years ago
7

Evaluate: 18 ( (5n - 4) = [?]

Mathematics
1 answer:
Lynna [10]3 years ago
5 0
90x-71 should be correct
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Find the values of x and y if (-x + 5, 1) = (-y, 2x - 5y).
MrMuchimi

Answer:

x = 8, y = 3

Step-by-step explanation:

Equating corresponding x and y coordinates , then

- y = - x + 5 ( multiply through by - 1 )

y = x - 5 → (1)

2x - 5y = 1 → (2)

Substitute y = x - 5 into (2)

2x - 5(x - 5) = 1 ← distribute and simplify left side

2x - 5x + 25 = 1

- 3x + 25 = 1 ( subtract 25 from both sides )

- 3x = - 24 ( divide both sides by - 3 )

x = 8

Substitute x = 8 into (1) for corresponding value of y

y = 8 - 5 = 3

7 0
3 years ago
Solve for x.<br> Need help, please.
dlinn [17]

x=9

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5 0
3 years ago
The graphs of functions f(x) and g(x) = f(x) + k are shown below<br><br> what is the value of k?
natali 33 [55]

Answer:

k = 2

Step-by-step explanation:

f(x) and g(x) = f(x) + k

G(x) is the function f(x) moved up k units

G(x) is moved up 2 units so k is 2

5 0
3 years ago
Read 2 more answers
What ONE doesn't belong with the others, 60 mi/h, 88 ft/s, 500 ft/min, and 1,440 mi/day?
sp2606 [1]
500 feet does not belong
6 0
3 years ago
HELP ASAP PLEASE ILL GIVE BRAINIEST!!! <br> I’m stuck !!!!
rosijanka [135]

Answer:

Therefore the value of EC is 13 unit.

Step-by-step explanation:

Given:

ABCD is a Rectangle

EC = 6x + 1

AE = x +11

To Find:

EC = ?

Solution:

ABCD is a Rectangle .........Given

Diagonal of Rectangle Bisect each other. .......Property of Rectangle

AE = EC

Substituting the values we get'

x+11=6x+1\\6x-x=11-1\\5x=10\\x=\dfrac{10}{2}\\\\x=2

Substituting 'x' in EC we get

EC=6\times 2+1=13\\EC=13\ unit

Therefore the value of EC is 13 unit.

7 0
3 years ago
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