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3 years ago

15

Explain why y^2 = x (X input, y output) is not a function.

2 answers:

Anni [7]3 years ago

8 0

Not a function because it can’t be put into y=mx+b form.

sveta [45]3 years ago

7 0

y^2 = x isn't a function because there is at least one value of x that produces multiple values of y. In fact, any x value greater than 0 yields two y values. If x = 0, then y = 0 is the only solution. ... Graphically, the equation fails the vertical line test, which is another way to determine that it is not a function.

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Solve the inequality. Graph the solution on a number line. 7<_2

Anni [7]

I have no idea but i really need help on this too33458584837

4 0

2 years ago

When converted to a household measurement, 9 kilograms is approximately equal to a

Crazy boy [7]

Answer:

D) 19.8 lbs

Explanation:

1kg in household measurement is equal to 35.274 ounces. 35.274*9=317.466 ounces.

1kg is also equal to 2.205 lbs. 9*2.205=19.8416

9 kg is also equal to 9000 grams, but grams are not a part of the household measurement system

a) 9000 grams. b) 9000 ounces. c) 19.8 ounces. d) 19.8 pounds.

This leaves us with 19.8 lbs

4 0

2 years ago

Write a linear function f with the values f(−1)=8 and f(5)=6.

Mashutka [201]

Answer:

f(x)=1/3x+23/3

Step-by-step explanation:

Find the slope:

m= -1/3

Find the y-intercept:

b= -7 2/3

Substitute in the numbers to get:

f(x)=1/3x+23/3

Hope this helps! :)

8 0

3 years ago

A block of ice weighing 20 lb is taken from the freezer where it was stored at -15"F. How many Btu of heat will be required to c

timofeeve [1]

Answer:

6700.6 BTU

Step-by-step explanation:

First you have to warm the block from -15° F to 32°F, the heat to needed to do this is:

$Q_{1}=mc\Delta T=20lb*0.49\frac{BTU}{lbF} *(32F-(-15F))=460.6BTU$

After you need to melt the ice. The heat you need is:

$Q_{2}=mL=20lb*144\frac{BTU}{lb}=2880BTU$

Finally, you need to heat the water from 32° F to 200 ° F, and the heat for this is:

$Q_{3}=mc\Delta T=20lb*1\frac{BTU}{lbF} *(200F-32F)=3360BTU$

$Q=Q_{1}+Q_{2}+Q_{3}=460.6BTU+2880BTU+3360BTU=6700.6BTU$ To have the total heat you used you have to su $Q_{1},Q_{2}$ and $Q_{3}$

6 0

2 years ago

Find the remainder when x^2+2x+1 is divided by x+1 ?

Mariana [72]

Answer:

x+1 is your remainder.

Step-by-step explanation:

- Use the long division process of polynomials

- The binomial given is not always your answer. It only was in this case.

3 0

3 years ago