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bagirrra123 [75]
3 years ago
10

For what value of a does the equation ax^2−3x−5=0 have 1 as one of its roots?

Mathematics
1 answer:
allsm [11]3 years ago
5 0
Answer: When a = 8, one of the roots of the equation will be 1.

To solve this problem, you could graph the equation with a 1 in the place of the a on a graphing calculator (there are some online).

Then, just keep changing the a value until the graph crosses the x-axis at 1. When, you enter an a value of 8, it will have a root of 1.
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Libby wants to make cookies for her whole class. There are 36 students in her class. The recipe Libby is going to use only makes 12 cookies. How many batches of cookies is Libby going to have to make to feed her whole class?
36/12
3 0
3 years ago
Alex has a rectangle piece of red paper that is 4 centimeter wide .its length is twice it's width she glues a piece of paper blu
xenn [34]
4cm•2=8cm which is the length of the red paper so therefore Red paper= 4cmx8cm.
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8 0
3 years ago
Alonzo wrote the equation x=2+4y-5 solve for y
kati45 [8]

hi

if x= 2+4y-5  then        x-2 +5 =  4y   so   y =  (x-2+5)  /4 =  ( x+3) /4

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3 0
3 years ago
A scientist is investigating whether percent concentration can be used to predict density in apple juice. A scientist selected a
USPshnik [31]

Answer:

The most appropriate inference procedure for the investigation is;

a. A linear regression t-interval for the slope

Step-by-step explanation:

Given that the slope of an horizontal line is zero, we have that there is no change in the y (dependent) variable when there is a change in the x-variable, therefore, it is important to find the true relationship between the two variables, 'x', and 'y'

The confidence interval of the slope is calculated and analyzed to determine if it excludes or includes, 0, such that, if the confidence interval exclude 0, then, it is unlikely that the slope is 0, therefore, there the relationship between the variables, 'x', and 'y' is significant

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3 0
3 years ago
The equation that passes through (3,6) and is perpendicular to 3x - 4y = - 2
Fynjy0 [20]

Answer:

C

Step-by-step explanation:

We want the equation of the line that passes through (3, 6) and is perpendicular to:

3x-4y=-2

First, convert the second equation into slope-intercept form:

-4y=-3x-2\Rightarrow \displaystyle y=\frac{3}{4}x+\frac{1}{2}

So, we can see that the slope of the line is 3/4.

The slopes of perpendicular lines are negative reciprocals of each other.

Therefore, the slope of the new line is -4/3.

It passes through the point (3, 6).

We can use the point-slope form:

y-y_1=m(x-x_1)

Substitute:

\displaystyle y-(6)=-\frac{4}{3}(x-3)

Distribute:

\displaystyle y-6=-\frac{4}{3}x+4

Therefore:

\displaystyle y=-\frac{4}{3}x+10

The answer is C.

5 0
3 years ago
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