use the elimination method to solve the system of equations. Choose the correct ordered pair. 5x-y=27 and 5x+4y=42

Mathematics

1 answer:

jeka57 [31]3 years ago

4 0

Answer:

(6,3)

Option B is the right option.

please see the attached picture for full solution...

Hope it helps....

Good luck on your assignment...

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60 pOINTS HELP PLEASE 4. A 20-kg child is tossed up into the air by her parent. The child is 2 meters off the ground traveling 5

Solnce55 [7]

K.E=0.5mv^2
GPE=mgh
The child has both K.E and GPE
$ke = 0.5 \times 20 \times {5}^{2} \\ ke = 10 \times 25 \\ ke = 250 \: joules$
$gpe = 20 \times 9.81 \times 2 \\ gpe = 40 \times 9.81 \\ gpe = 392.4 \: joules$
g is taken as 9.81

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3 years ago

A phone company offers two monthly plans. Plan A costs $12 plus an additional $0.16 for each minute of calls. Plan B costs $29 p

lora16 [44]

Answer:

425 min
$80

Step-by-step explanation:

The equation to reflect the monthly plans:

Plan A f(x) = 0.16x + 12
Plan B g(x) = 0.12x + 29

We need to find the value of x when f(x) = g(x):

0.16x + 12 = 0.12x + 29
0.16x - 0.12x = 29 - 12
0.04x = 17
x = 17/0.04
x = 425 minutes

The cost is:

$0.16*425 + $12 = $80

4 0

3 years ago

F(x)=x^2-2x-3 (so I need the done in like 20 min)

maks197457 [2]

Vertex point: (1, -4)

X-intercepts: (-1, 0) , (3, 0)

Y-intercept: (0, -3)

Axis of symmetry: x = 1

This function will create a parabola that opens upwards. I’m not entirely sure what I was supposed to answer. Hopefully this covered it. I’ll attach an image of the parabola in case I missed anything.