PLEASE HELP ITS QUICK AND EASY JUST CONFUSED

Answer: Choice B)  -infinity < x < infinity

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Explanation:

The parabola goes on forever to the left and to the right. We can plug in any x value without worrying about something as a division by zero error. So any real number will work.

Writing -infinity < x < infinity refers to the entire number line, which is the set of all real numbers.

Answer:

He can clean 10 pools in 25 hours.

Step-by-step explanation:

Answer:

A number used to multiply a variable. Example: 6z means 6 times z, and "z" is a variable, so 6 is a coefficient. Variables with no number have a coefficient of 1.

Step-by-step explanation:

Here sorry if this doesn't help

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Answer:

Step-by-step explanation:

I assume that they want the value of a when the solution exists.

2(ax+3y)+2x-6y=2(-5)+10

2ax+6y+2x-6y=-10+10

2ax+2x=0

ax+x=0

ax=-x

a=-1

You could then solve for x and y if you wanted x=5 and y=0

Unless a was a typo :)

Answer:

Quadrant lll

Step-by-step explanation:

Since the cosine of the angle is positive, the sine of the angle must be negative and the terminal side of the angle lies in either Quadrant III or IV.

The rectangular equation that represents the parametric equation [tex]x=t^{\frac{1}{2} }[/tex] and y = 4t is:

[tex]y=4x^2[/tex] for [tex]x\geq0[/tex]

Note the given representations:

[tex]x=t^{\frac{1}{2} }[/tex]

[tex]y=4t[/tex]

Make t the subject of the formula from the expression [tex]x=t^{\frac{1}{2} }[/tex]

[tex]x^2=t^{\frac{1}{2}\times2\\\\x^2=t\\t=x^2[/tex]

Substitute [tex]t=x^2[/tex] into y = 4t

[tex]y=4x^2[/tex]

Therefore, the rectangular equation that represents the parametric equation [tex]x=t^{\frac{1}{2} }[/tex] and y = 4t is:

[tex]y=4x^2[/tex] for [tex]x\geq0[/tex]

Learn more on parametric equation here: https://brainly.com/question/14746714

#SPJ2

Answer:

x - 4y = 8

Step-by-step explanation:

I know it is right

Answer:

3 and -10 to get 30

4 and -11 to get -7

Step-by-step explanation:

3 * -10 = -30

4 + (-11) = 4 - 11 = -7

Answer:

3(13.50+6.50s) and 3(20.00s)

Step-by-step explanation:

Answer:

2.99 is the amount that is being taken off and the final price is $26.91

Step-by-step explanation:

Answer:

C becausee I'm trying to help

Answer:

c. 15cm^2

Step-by-step explanation:

Answer:

c. 15 cm

Step-by-step explanation:

Area is multiplication of height and length, (or whatever you call it) and 5 multiplied by 3=15

Answer:

The 9th term will be -24

Step-by-step explanation:

The 9th term will be equal to

[tex]b_{n}[/tex] = - 8 - 2(n - 1)

[tex]b_{9}[/tex] = - 8 - 2(9 - 1)

[tex]b_{9}[/tex] = - 8 - 18 + 2

[tex]b_{9}[/tex] = - 24

Answer:

12 min each student

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

Answer:

Learned

Step-by-step explanation:

I luv u!

Answer: D

Step-by-step explanation: you just got coconut malled send this to a friend to totally coconut mall them (D is correct)

Answer:

d, 40% !

Step-by-step explanation:

this one, you can use long division ! since the faction of apple to all fruit is 6/15, you divide 6 by 15. you would get the decimal 0.4

in order to make that a percentage, you'd just move the decimal two places to the right, then add a % !! so it's 40% !!

i really hope this helped!

Answer:

VXW

Step-by-step explanation: Since the first one is the same model as the 2nd but with different letter and the order for the first one would be the same as the 2nd model.

Answer: 52:41

Step-by-step explanation:

Answer: 32.78

Step-by-step explanation:

Answer:

its always the third one

Step-by-step explanation:

Have a good day

Answer:

I would say 32 but I'm not sure

Step-by-step explanation:

x= 139°

180-41= 139°

hope this helped:)

Answer:

Step-by-step explanation:

Margin of Error = Zcritical * Standard error

Zcritical at 5% confidence interval

Z0.065

Answer:

Sorry

Step-by-step explanation:

Your pictures don't open

Answer:

2/3 * 1/3 = 2/9

Step-by-step explanation:

You see the top 2 lines being shaded which is 2/3's of the whole square.

The second shaded part only covers 1/3 of the whole square.

Thus, you multiply both parts to figure out the darkest shaded part!

Answer:

Yes!

Step-by-step explanation:

Answer:

3d + 1

I'm pretty sure it's the same thing.

Answer:

If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is is dA/dt =  15 - 0.005A

Option C) dA/dt =  15 - 0.005A is the correction Answer

Step-by-step explanation:

Given the data in the question;

If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is?

dA/dt = rate in - rate out

first we determine the rate in and rate out;

rate in = 3pound/gallon × 5gallons/min = 15 pound/min

rate out = A pounds/1000gallons × 5gallons/min  = 5Ag/1000pounds/min

= 0.005A pounds/min

so we substitute

dA/dt = rate in - rate out

dA/dt =  15 - 0.005A

Therefore, If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is is dA/dt =  15 - 0.005A

Option C) dA/dt =  15 - 0.005A is the correction Answer