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Natasha2012 [34]
3 years ago
7

If you a real human help attached file 

Mathematics
1 answer:
jolli1 [7]3 years ago
6 0

Simply substitute;

Q1:

Answer: 2

Q2:

Answer: 32

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What is negative 7 over 2 simplified
anyanavicka [17]
It's just like multiplying and dividing a negative, such as -1 *2=-2 and -2 / 1= -1

if there is one negative then it will be negative, so in this case it will be -7 / 2= 

answer= -3 1/2
8 0
3 years ago
A piece of rope 20 feet long is cut from a longer piece that is at least 32 feet long. The remainder is cut into four pieces of
garri49 [273]

Answer:

3

Step-by-step explanation:

32 - 20 = 12

12/4 = 3

This assumes that by remainder they mean they twelve feet left over and not the twenty feet removed. This is likely what it means.

7 0
2 years ago
Using the quadratic formula to solve 11x^2-4x=1, what are the values of X?
Rashid [163]
The correct answers for x would be \frac{2 +/-  \sqrt{15} }{11}.

In order to find this, we must first get the equation to equal 0. In order to do that, subtract 1 from each side to get the following. 

11x^{2} - 4x - 1 = 0

Knowing this we can now use the quadratic equation using a = 11, b = -4 and c = -1. The quadratic equation is below. 

\frac{-b +/-  \sqrt{ b^{2} - 4ac} }{2a}

Now we can plug the values into the equation to solve. 

\frac{4 +/- \sqrt{ -4^{2} - 4(11)(-1)} }{2(11)}

Then simplify using the order of operations. 

 \frac{2 +/- \sqrt{15} }{11}.
5 0
4 years ago
A family of right triangles has side lengths in the approximate ratio 3:4:5. One right angle
velikii [3]

Answer:

2,016.67 sq. cm

Step-by-step explanation:

Given the approximate ratio of the sides of a rectangle as 3:4:5.

Total ratio = 3+4+5 = 12

Area of the rectangle = 1/2*base *height

get the base;

base = 3/12 * 220

Base =  55cm

Get the height

Height = 4/12 * 220

Height = 880/12

Height = 73.3cm

Area = 1/2 * 55 * 73.3

Area = 2,016.67 sq. cm

7 0
3 years ago
What does the graph for y=-3x look like
kipiarov [429]
This is what the graph looks like hope this helps:)

3 0
3 years ago
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