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slega [8]
4 years ago
10

A system of equations is shown below:

Mathematics
2 answers:
blondinia [14]4 years ago
8 0
X + y = 3
2x - y = 6
-------------add
3x = 9
x = 9/3
x = 3 <===
Vera_Pavlovna [14]4 years ago
7 0

Answer:

The only way to be able t o mark someone brainest is if there are 2 answerd so now you should be able to make his brainest

Step-by-step explanation:

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If the value of 2x3 is 2, then what is the value of x?
Oduvanchick [21]
ANSWER: x = 1/3

WORKING OUT:

2 times x times 3 = 2

6 times x = 2

x = 1/3
5 0
4 years ago
Find the slope of each graph. Express the answer in simplest form. Please show graph​
Sidana [21]

Answer:

Step-by-step explanation:

slope is -3/2. rise/run. There's already a graph there so I'm assuming no need to show one

7 0
3 years ago
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You are riding a roller coaster when a shoe falls off your foot. The function y=300−16t2 represents the height y (in feet) of th
Juli2301 [7.4K]

Answer:

Time to land on 11ft is 4.25 seconds

Step-by-step explanation:

Given

y = 300 - 16t^2

Required

Solve for t when height is 11ft

This implies that y = 11

So: substitute 11 for y in y = 300 - 16t^2

11 = 300 - 16t^2

Collect Like Terms

16t^2 = 300 - 11

16t^2 = 289

Express both sides as squares

4^2 * t^2 = 17^2

(4t)^2 = 17^2

Take square roots of both sides (ignore negative)

4t = 17

Solve for t

t = \frac{17}{4}

t = 4.25

Hence, time to land on 11ft is 4.25 seconds

8 0
3 years ago
The base of a parallelogram is 18 inches longer than three times the height. The area of the parallelogram is 216 square inches.
nordsb [41]

Answer:

12 inches

Step-by-step explanation:

Let b represent the base

h represents the height

area of the parallelogram = base * height = 216 square inches

From the question'

b = 18 + 3h

Slot in the value of b

216 = (18 + 3h) * h

expand

216 = 18h + 3h^2

subtract 216 from both sides

0 = 18h + 3h^2 - 216

rearrange

3h^2 + 18h - 216 = 0

divide through by 3

h^2 + 6h - 72 = 0

Now, lets solve!

h^2 + 6h - 12h - 72 = 0

h( h + 6 ) - 12(h + 6) = 0

(h - 12) (h + 6) = 0

h - 12 = 0

h = 12

and

h + 6 = 0

h = - 6

Taking the positive value of h

Hence, the height is 12 inches

Lets check

when h = 12 inches

Area of the parallelogram = 18* 12 = 216 square inches     .... correct

when h = -6inches

A = 18 * -6 ≠  216 square inches

So height is 12 inches

5 0
4 years ago
On a number line, what is the distance between -12 and 20?
bija089 [108]
That would be a total of 32
3 0
4 years ago
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