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storchak [24]
3 years ago
7

ILL GIVE A BRAINLEST!!!! TO THE FIRST ONE WHO ANSWERS THIS PLZ I NEED HELP ASAP!!!

Mathematics
2 answers:
marin [14]3 years ago
7 0

Answer:look at the picture for the answer

docker41 [41]3 years ago
7 0
It is 9 you draw a triangle with those measurements and use the Pythagorean theorem. A^2+b^2=c^2 so 12^2+b^2=15^2 so 144+b^2=225 then 144-225=81 then un square you get 9 don’t forget to label
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Please help!!!! Im so bad at math
kakasveta [241]

Answer:

-5.

Step-by-step explanation:

f(n) = 5n + 6

Just plug in  -11/5  for n:

f(-11/5) = 5 (-11/5) + 6

= -11 + 6

= -5.

5 0
3 years ago
Victoria's parents borrow 6,300 from the bank for a new car. the interest rate is 6% per year. how much interest will they pay a
scoray [572]
You have to state the time of the loan.
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8 0
3 years ago
Find the ratio created when AB is partitioned by C.
Blizzard [7]

Answer:

Step-by-step explanation:

From the picture attached,

Segment AB has been divided into four equal parts.

Let each part measures equal length = 1 unit

Point C is 2 units apart from both the points A and B.

Length of AC = Length of BC = 2 units

Therefore, point C will be the mid point of segment AB.

And ratio of AC and BC = 1:1

AC:BC = 1:1

Similarly, AC:AB = 2:4

                           = 1:2

And BC:AB = 2:4

                   = 1:2

8 0
2 years ago
What is the quotient of 9−x^2 divided by 3x and x^2+6x+9 divided by 3x?
Naddik [55]

Answer:

44 rem

Step-by-step explanation:

Sorry i dont have an explanation

5 0
2 years ago
Solve the equation by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are locat
zavuch27 [327]

Answer:

The equation contains exact roots at x = -4 and x = -1.

See attached image for the graph.

Step-by-step explanation:

We start by noticing that the expression on the left of the equal sign is a quadratic with leading term x^2, which means that its graph shows branches going up. Therefore:

1) if its vertex is ON the x axis, there would be one solution (root) to the equation.

2) if its vertex is below the x-axis, it is forced to cross it at two locations, giving then two real solutions (roots) to the equation.

3) if its vertex is above the x-axis, it will not have real solutions (roots) but only non-real ones.

So we proceed to examine the vertex's location, which is also a great way to decide on which set of points to use in order to plot its graph efficiently:

We recall that the x-position of the vertex for a quadratic function of the form f(x)=ax^2+bx+c is given by the expression: x_v=\frac{-b}{2a}

Since in our case a=1 and b=5, we get that the x-position of the vertex is: x_v=\frac{-b}{2a} \\x_v=\frac{-5}{2(1)}\\x_v=-\frac{5}{2}

Now we can find the y-value of the vertex by evaluating this quadratic expression for x = -5/2:

y_v=f(-\frac{5}{2})\\y_v=(-\frac{5}{2} )^2+5(-\frac{5}{2} )+4\\y_v=\frac{25}{4} -\frac{25}{2} +4\\\\y_v=\frac{25}{4} -\frac{50}{4}+\frac{16}{4} \\y_v=-\frac{9}{4}

This is a negative value, which points us to the case in which there must be two real solutions to the equation (two x-axis crossings of the parabola's branches).

We can now continue plotting different parabola's points, by selecting x-values to the right and to the left of the x_v=-\frac{5}{2}. Like for example x = -2 and x = -1 (moving towards the right) , and x = -3 and x = -4 (moving towards the left.

When evaluating the function at these points, we notice that two of them render zero (which indicates they are the actual roots of the equation):

f(-1) = (-1)^2+5(-1)+4= 1-5+4 = 0\\f(-4)=(-4)^2+5(-4)_4=16-20+4=0

The actual graph we can complete with this info is shown in the image attached, where the actual roots (x-axis crossings) are pictured in red.

Then, the two roots are: x = -1 and x = -4.

5 0
3 years ago
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