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3 years ago

What are the roots of y=x^2+3x-10

Mathematics

2 answers:

USPshnik [31]3 years ago

5 0

The answer is x = 2, -5

Sergio [31]3 years ago

4 0

-2,5 is the answer...just did it on “edge”

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Ill brainlist you plus give you more points if needed I have atleast 40 somthing after this

Naya [18.7K]

Answer:

I think its 1/6

Step-by-step explanation:

cause there are six numbers so the probility is out of six

that could be wrong not 100% sure its been a while

3 0

3 years ago

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The amount of carbon-14 in an object is given by y = ae– 0.00012t where a is the initial amount of carbon and t is the age in ye

Reptile [31]

Answer:

The approximate age of the bone is approximately 11552 years.

Step-by-step explanation:

The current proportion of carbon-14 with respect to its original amount is defined by following formula:

$\frac{y}{a} = e^{-0.00012\cdot t}$ (1)

Where:

$y$ - Current amount of carbon-14, no unit.

$a$ - Initial amount of carbon-14, no unit.

$t$ - Time, in years.

If we know that $\frac{y}{a} = 0.25$ , then the approximate age of the bone is:

$t = -8333.333\cdot \ln \frac{y}{a}$

$t\approx 11552.453\,yr$

The approximate age of the bone is approximately 11552 years.

4 0

3 years ago

Use the hundredths grid to answer the question and whoever gives me the first answer get brainlest

Oksi-84 [34.3K]

Your answer would be option C because the red is 36 and the blue is 27 which added together equals 63

8 0

3 years ago

What is the slope and y-intercept of the line represented by 3x=15

Svetach [21]

Answer:

The slope is undefined and there is no y- intercept

Step-by-step explanation:

The line is equivelent to x=5

This is a vertical line so the slope is undefined and there is no y- intercept

8 0

3 years ago

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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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