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4 years ago

Help me please!!! I give more points and brainliast please help me!

Mathematics

1 answer:

fiasKO [112]4 years ago

7 0

Hey there!!

Fill in the blanks :-

⇒ First graph the line. Locate the value of x on the x-axis. Draw a vertical line from point plotted on the x-axis to the graph of the function and a horizontal line segment from the graph of the function to the y-axis.

Find the value of f(x) when x is -2.

$f(x) = \frac{3}{2}x-4$

Remember :- f(x) is basically the y-value. It is just denoted as _f(x), it stands for function of x. Which means, the value of y, depends upon the value of x or the function of x.

Given : x = - 2

Plugging in the values :

... $f(-2) = \frac{3*(-2)}{2}-4$

... $f(-2) = \frac{-3}{1} - 4$

... $f(-2) = -7$

The last fill in the blank :

The value of y on the y-axis is the value of the function. Therefore, the value of f(x) is -7 when x is -2.

Hope it helps!!

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Identify the independent and dependent variables in the following situation: The more hours Beth studies, the higher the GPA she

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3 years ago

If two consecutive angles of a parallelogram are congruent, what is the measure of each angle?

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Answer:

Measure of each angle is 90 degree.

Step-by-step explanation:

Given : If two consecutive angles of a parallelogram are congruent.

To find the measure of each angle:

There are 6 important properties of parallelograms:

Opposite sides are congruent.

Opposite angles are congruent
Consecutive angles are supplementary.
If one of the angle is right angle, then all angles are right.
Diagonals of a parallelogram bisect each other
Also, each diagonal of a parallelogram separates it into two congruent.

let A and D be two consecutive angle.

then, by the given condition

$\angle A \cong \angle D$ ......[1]

From the property of parallelogram:

Consecutive angles are supplementary

Then;

$\angle A + \angle D = 180^{\circ}$

From equation [1];

$\angle A + \angle A = 180^{\circ}$

Combine like terms :

$2\angle A = 180^{\circ}$

Divide both sides by 2 we get;

$\frac{2 \angle A}{2} = \frac{180^{\circ}}{2}$

Simplify:

$\angle A = 90^{\circ}$

From the given property of parallelogram : if one of the angle is right, then all the angles in the parallelogram are right angle.

∴ $\angle A = \angle B = \angle C = \angle D = 90^{\circ}$

Therefore, the measure of each angle is $90^{\circ}$

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3 years ago

Khloe goes to a store an buys an item that costs xx dollars. She has a coupon for 15% off, and then a 8% tax is added to the dis

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Answer:

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Step-by-step explanation:

the total amount is:

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2 years ago

Please help asap! I need this done tomorrow

d1i1m1o1n [39]

Answer:

2x + 3y = 4

Step-by-step explanation:

The standard form:

Ax + By = C

So from the given form, arrange it to the standard form.

First, simplify the form by distribution.

y + 6 = -2/3(x - 11)

y + 6 = -2/3x + 22/3

Next, you make the fractions into whole by multiplying both sides by 3(this would eliminate all fractions).

(3)y + 3(6) = 3(-2/3x) + 3(22/3)

3y + 18 = -2x + 22

Now, arrange the "Ax" and the "C's".

3y + 18 = -2x + 22

2x + 3y + 18 = 22

2x + 3y = 22 - 18

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Cheers!

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4 years ago

An accelerated life test on a large number of type-D alkaline batteries revealed that the mean life for a particular use before

zheka24 [161]

Answer:

68.2% of the batteries failed between 17.8 and 20.2 hours.

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Step-by-step explanation:

The 68-95-99.7 states that, for a normally distributed sample:

68.26% of the measures are within 1 standard deviation of the sample.

95.44% of the measures are within 2 standard deviations of the sample.

99.97% of the measures are within 3 standard deviations of the sample.

In this problem, we have that:

Mean of 19 hours, standard deviation of 1.2 hours.

About 68.26% of the batteries failed between what two values?

This is within 1 standard deviation of the mean. So 68.2% of the batteries failed between 17.8 and 20.2 hours.

About 95.44% of the batteries failed between what two values?

This is within 2 standard deviations of the mean. So 95.44% of the batteries failed between 16.6 and 21.4 hours.

About 99.97% of the batteries failed between what two values?

This is within 3 standard deviations of the mean. So 99.97% of the batteries failed between 15.4 and 22.6 hours.

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3 years ago

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