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3 years ago

7

I needs help on algibra

2 answers:

grigory [225]3 years ago

4 0

Answer:

Step 1) She should have added 25 to each side

Step-by-step explanation:

Since there is a -25 in the original equation, to properly cancel it out, she should have added it to both side, not subtracted. This would ensure that the -25 on the left of the = is cancelled out.

suter [353]3 years ago

4 0

9514 1404 393

Answer:

Step 1: She should have added 25

Step-by-step explanation:

The second step shows that Erica wanted the result that -25 would disappear from the left side of the equation. However, by subtracting 25, she would end up with -5x - 50 on the left.

To make the sum of -25 and some number be zero, the added number must be the opposite of -25. That is, 25 must be added (to both sides).

__

In the attachment, the sum in the red rectangle is -50, not 0.

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A Ferris Wheel is built such that the height in feet above ground of a seat on the wheel at time t seconds can be modeled by h(t

MAVERICK [17]

Answer:

at time, t = 8 seconds and t = 24 seconds Ferris Wheel be 53 feet above the ground

Step-by-step explanation:

Data provided in the question:

height in feet above ground of a seat on the wheel at time t seconds is

modeled as

h(t) = $53 + 50\sin((\frac{\pi t}{16} - \frac{\pi}{2})$

now,

at height 53 above the ground, we get the equation as:

53 = $53 + 50\sin(\frac{\pi t}{16} - \frac{\pi}{2})$

or

$50\sin(\frac{\pi t}{16} - \frac{\pi}{2})$ = 53 - 53

or

$\sin(\frac{\pi t}{16} - \frac{\pi}{2})$ = 0

also,

sin(0) = 0

and,

sin(π) = 0

therefore,

$(\frac{\pi t}{16} - \frac{\pi}{2})$ = 0

or

$\frac{\pi t}{16} = \frac{\pi}{2}$

or

t = 8 seconds

and,

$(\frac{\pi t}{16} - \frac{\pi}{2})$ = π

or

$\frac{\pi t}{16}= \pi + \frac{\pi}{2}$

or

$\frac{\pi t}{16}= \frac{3\pi}{2}$

or

t = 24 seconds

Hence,

the at time, t = 8 seconds and t = 24 seconds Ferris Wheel be 53 feet above the ground

7 0

3 years ago

2+1/6y=3x+4 solve for y

sertanlavr [38]

<span>2+1/6y=3x+4 solve for y
</span>
Answer y=18x+12

6 0

3 years ago

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VikaD [51]

Answer:

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5 0

3 years ago

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Is (0,3) a solution to the equation y = x + 3?

Anna11 [10]

Yes,
y=x+3
if x=0,
y=0+3
y=3
therefore (0,3) is a solution

3 0

3 years ago

Read 2 more answers

Murljashka [212]

Answer:

mean=86+72+16+42+16+55+16+12+91+55/2

mean=230.5

mode=16-unimodal

median the middle value but in the first arrange in ascending order.

12,16,42,55,72,86 and 91

median=55

hope it helps!

6 0

2 years ago