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makvit [3.9K]
2 years ago
11

1. Is y = -x - 1 quadratic? Explain.

Mathematics
1 answer:
Tpy6a [65]2 years ago
4 0
No because the formula for a quadratic equation is ax^2+bx+c=0
This is a linear equation however.
Hope this helps
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one table has 8 people with 3 pizzas another table has 10 people with 4 pizzas which table has more pizza?
Alika [10]

Answer:

The table with 10 people and 4 pizzas

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
The table shows the value of an account x years after the account was opened. Based on the exponential regression model, which i
lana66690 [7]

Answer:

Correct choice is B

Step-by-step explanation:

The exponential regression model can be written as exponential function

y=a\cdot b^x.

Then

5,000=a\cdot b^0=a,\\ \\5,510=a\cdot b^2\Rightarrow 5,510=5,000\cdot b^2,\\ \\b^2=\dfrac{5,510}{5,000}=\dfrac{551}{500}\Rightarrow b\approx 1.05.

Thus,

y=5,000\cdot (1.05)^x.

When x=12, you get

y(12)=5,000\cdot (1.05)^{12}\approx \$8,980.

6 0
3 years ago
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Simplify the expression.
Neporo4naja [7]

Answer:

D

Step-by-step explanation:

3 0
1 year ago
Todd has twice as many songs in his playlist as Vlad. Becca has three times as many songs in her playlist as Todd. If all three
nikitadnepr [17]

Answer:

Todd has 540540 songs in his playlist.

Vlad has 270270 songs in his playlist.

Becca has 162162 songs in her playlist.

Step-by-step explanation:

# of songs Todd has = T

# of songs Vlad has = V

# of songs Becca has = B

1) Todd has twice as many songs in his playlist as Vlad:

T=2V

2) Becca has three times as many songs in her playlist as Todd:

B=3T

3) All three people have a total of 243243 songs in their playlists:

T+V+B=243243

Because T=2V then you can substitute T as 2V in the second equation:

B=3(2V)

B=6V

Now in the final equation, you can substitute everything for V:

2V+V+6V=243243

9V=243243

V=27027

Now substitute for T:

T+1/2T+3T=243243

9/2T=243243

T=54054

Now substitute for B:

1/3B+1/6B+B=243243

3/2B=243243

B=162162

Check answers:

27027+54054+162162=243243

243243=243243

3 0
2 years ago
Write the unit rate and the rate 15 points scored in 4 quarters
Trava [24]
You first divide both numbers by 4 to get one quarter which is the unit, and to get the rate, you divide 15 by 4 also. i got the unit rate is 3.75 points oer quarter.
3 0
3 years ago
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