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Readme [11.4K]
2 years ago
11

HELP ASAP!!! ITS DUE IN A FEW MINUTES!!!

Mathematics
1 answer:
max2010maxim [7]2 years ago
4 0

Answer:

A

Step-by-step explanation:

it is A because the graph move from a negative axis and move to positive axis at the top

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Solve the following system of equations using the
Alja [10]

Answer:

The solutions are 3 and -5

Step-by-step explanation:

x+3=x^2+3x-12

x^2+2x-15

=(x-3)(x+5)

6 0
3 years ago
Read 2 more answers
Factor the expression below.<br> 4x2 - 1
Mila [183]

Answer:

(2x-1)(2x+1)

Step-by-step explanation:

the answer is c

4 0
3 years ago
Part A
nikdorinn [45]
A is one correct answer
8 0
3 years ago
Find the area of the region that lies under the parabola y=5x - x^2, where 1≤x≤4. I would definitely like to see some work :)
Elena L [17]

Answer:

  16.5 square units

Step-by-step explanation:

You are expected to integrate the function between x=1 and x=4:

  \displaystyle\text{area}=\int_1^4{(5x-x^2)}\,dx=\left.\left(\dfrac{5}{2}x^2-\dfrac{1}{3}x^3\right)\right|_{x=1}^{x=4}\\\\=\dfrac{5(4^2-1^2)}{2}-\dfrac{4^3-1^3}{3}=37.5-21=\boxed{16.5}

__

<em>Additional comment</em>

If you're aware that the area inside a (symmetrical) parabola is 2/3 of the area of the enclosing rectangle, you can compute the desired area as follows.

The parabolic curve is 4-1 = 3 units wide between x=1 and x=4. It extends upward 2.25 units from y=4 to y=6.25, so the enclosing rectangle is 3×2.25 = 6.75 square units. 2/3 of that area is (2/3)(6.75) = 4.5 square units.

This region sits on top of a rectangle 3 units wide and 4 units high, so the total area under the parabolic curve is ...

  area = 4.5 +3×4 = 16.5 . . . square units

4 0
2 years ago
For every 1 litre of water used 150ml of sucrose and 600ml of saline solution is used
lisabon 2012 [21]

Question:

For every 1 litre of water used to make a medicine, 600 ml of sucrose and 150ml of saline solution are used.

Express the amount of water, sucrose and saline solution needed as a ratio in its simplest form.

Answer:

Water : Sucrose : Saline = 20 : 3 : 12

Step-by-step explanation:

Given

Water = 1L

Sucrose = 150mL

Saline= 600mL

Required

Express as a ratio to the simplest form

First convert the volume of water to mL

Water = 1L

Water = 1 * 1000mL

Water = 1000mL

Express as ratio:

Water : Sucrose : Saline = 1000mL : 150mL : 600mL

Water : Sucrose : Saline = 1000 : 150 : 600

Divide through by 10

Water : Sucrose : Saline = 100 : 15 : 60

Divide through by 5

Water : Sucrose : Saline = 20 : 3 : 12

<em>The ratio can not be further simplified</em>

6 0
3 years ago
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