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Sonbull [250]
3 years ago
5

Please answer correctly !!!!!! Will mark brainliest !!!!!!!!!!!!!

Mathematics
1 answer:
Leni [432]3 years ago
4 0

Answer:

At the time of launch height of the object was 60 meters.

Step-by-step explanation:

An object was launched from a platform and its height was modeled by the function,

h(x) = -5x² + 20x + 60

Where x = time or duration after the launch

At the time of launch, x = 0

So, by putting x = 0 in this equation,

h(0) = -5×(0) + 20×(0) + 60

h(0) = 60

Therefore, at the time of launch height of the object was 60 meters.

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Solve..........20 = 5x + 10y
kvv77 [185]

5x + 10y = 20

-5x + 20 = 10y

-x/2 + 2 = y

y = 2 - x/2

20 - 10y = 5x

4 - 2y = x

x = -2y + 4

Answer:

x = -2y + 4

y = 2 - x/2

6 0
3 years ago
A rectangle or piece of paper has a width is 3 inches less than its link it is cut in half along a diagonal to create two congru
kolezko [41]

The length and width of the rectangle is 11 in and 8 in respectively.

Step-by-step explanation:

Given,

The width of a rectangle is 3 in less than the length.

The area of each congruent right angle triangle = 44 in²

To find the length and width of the rectangle.

Formula

The area of a triangle with b base and h as height = \frac{1}{2}bh

Now,

Let, the width = x and the length = x+3.

Here, for the triangle, width will be its base and length will be its height.

According to the problem,

\frac{1}{2}×(x+3)×x = 44

or, x^{2} +3x = 88

or,x^{2} +3x-88 = 0

or, x^{2}+(11-8)x-88 = 0

or, x^{2}+11x-8x-88 =0

or, x(x+11)-8(x+11) = 0

or, (x+11)(x-8) = 0

So, x = 8 ( x≠-11, the length or width could no be negative)

Hence,

Width = 8 in and length = 8+3 = 11 in

3 0
3 years ago
The aquarium is 2 1/2 miles from her hotel. She walks 1/4 to the bus stop. Takes the bus for 1 3/4 miles and walks the rest of t
OleMash [197]

Answer:

2/4

Step-by-step explanation:

Change the 2 1/2 to 2 2/4

now subtract 1/4 from 2 2/4 leaving 2 1/4

Now subtract 1 3/4 from 2 1/4 in which you get 2/4

which is the answer :)

7 0
2 years ago
Read 2 more answers
Solve for x: 10x – 3 + x < 30
Gala2k [10]

Answer:

The correct answer would be the last one; x < 3.

Step-by-step explanation:

Step 1: Simplify both sides of the inequality.

11x - 3 < 30

Step 2: Add 3 to both sides.

11x - 3 + 3 < 30 + 3

11x < 33

Step 3L Divide both sides by 11.

11x/11 < 33/11

Therefor, the correct answer would be the last one: x < 3

Hope this helps!

7 0
3 years ago
Read 2 more answers
Write 3/4 as a decimal number
sasho [114]

Answer: 0.75. It's pretty obvious.

3 0
3 years ago
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