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2 years ago

How many times does the quadratic function below intersect the x-axis? y = 2x2 +7x+6

Mathematics

1 answer:

sattari [20]2 years ago

6 0

Answer:

once

Step-by-step explanation:

since the equation is liner, with x simply to the first power, it will only cross the x axis once. x^2 would cross the x axis twice, x^3 would cross it three times, and so on

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What is the answer to this question

mariarad [96]

−3.666667, hope that helps.

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3 years ago

17. Anna is 157.5 centimeters tall and her

Alinara [238K]

15.26 mm. All you gotta do is convert the millimeters to centimeters, and that subtract. Make sure the decimal point is right, tho. :)

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1 year ago

The heights of dogs, in inches, in a city are normally distributed with a population standard deviation of 3 inches and an unkno

Nitella [24]

Answer: 1.2703

Step-by-step explanation:

Given : Sample size : n= 17, which is a small sample (n<30), so we use t-test.

Significance level : $\alpha:1-0.90=0.1$

Then , Critical value : $t_{n-1,\alpha/2}=t_{16, 0.05}\pm1.745884$

Standard deviation: $s=3\text{ inches}$

The formula to find the margin of error : -

$E=t_{n-1,\alpha/2}\dfrac{s}{\sqrt{n}}\\\\\Rightarrow\ E=(1.745884)\dfrac{3}{\sqrt{17}}\\\\\Rightarrow\ E=01.27031720154\approx1.2703$

Hence, the error bound (EBM) of the confidence interval with a 90% confidence level.=1.2703

6 0

2 years ago

A line with a slope of 4 passes through the point (2, 1 ). What is the equation of this line?

castortr0y [4]

Answer:Put this in y= mx +b form

we have the slope(4) as well as a set of points for x and y so we have everything we need to solve for b

1= 4(2) + b

1 =8+b B=-7

so equation is y = 4x -7

Step-by-step explanation: can i get brainley? :)

6 0

2 years ago

The quotient of 12 and a number q is at most 5

Ierofanga [76]

So, if you are asking for an equation that fits this statement here it is:
12 ÷ q ≤ 5
Hope this helps!

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2 years ago