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4 years ago

Can someone solve this for me and please show your work 4x² If x = -2

Mathematics

2 answers:

aleksley [76]4 years ago

5 0

4(2)=8•8=64 good luck

ankoles [38]4 years ago

5 0

Answer:

Step-by-step explanation:

4x²

we substitute x variable by -2 and then evaluate the numerical result:

4*(-2)^2

4* 4 = 16

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svet-max [94.6K]

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7 0

3 years ago

What is the equation of a line passing through the point

Anettt [7]

Answer:

$y=5x-13$

Step-by-step explanation:

The correct question is

What is the equation of a line passing through the point (3, 2) and parallel to the line y=5x+4

step 1

Find the slope of the given line

we have

$y=5x+4$

This is the equation of the line in slope intercept form

The slope is $m=5$

step 2

Find the slope of the line parallel to the given line

we know that

If two lines are parallel, then their slopes are equal

The slope is $m=5$

step 3

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=5$

$point\ (3,2)$

substitute

$y-2=5(x-3)$

step 4

Convert to slope intercept form

$y=mx+b$

isolate the variable y

$y-2=5x-15$

$y=5x-15+2$

$y=5x-13$

3 0

3 years ago

Find the measure of angle 1

Lubov Fominskaja [6]

In ∆FDH, there are two slash marks in two of its legs. This indicates that this triangle is isosceles. If a triangle is isosceles, then it will have two congruent sides and therefore have two congruent angles.

In ∆FDH, angle D is already given to us as the measure of 80°. We can find out the measure of the other angles of this triangle by using the equation:

80 + 2x = 180

Subtract 80 from both sides of the equation.

2x = 100

Divide both sides by 2.

x = 50

This means that angle F and angle H in ∆FDH both measure 50°.

Now, moving over to the next smaller triangle in the picture is ∆DHG. In this triangle, there are also two legs that are congruent which once again indicates that this triangle is isosceles.

First, we have to solve for angle DHG and we do that by using the information obtained from solving for the angles of the other triangle.

**In geometry, remember that two or more consecutive angles that form a line will always be supplementary; the angles add up to 180°.**

In this case angle DHF and angle DHG are consecutive angles which form a linear pair. So, we can use the equation:

Angle DHF + Angle DHG = 180°

50° + Angle DHG = 180°.

Angle DHG = 130°.

Now that we know the measure of one angle in ∆DHG, we can use the same method as the previous step for solving the missing angles. Use the equation:

130 + 2x = 180

2x = 50

x = 25

The other two missing angles of ∆DHG are 25°. This means that the measure of angle 1 is also 25°.

Solution: 25°

8 0

4 years ago

Read 2 more answers

How many time larger is 9x10^-8 than 3x10^-12

kkurt [141]

Step-by-step explanation:

$\frac{9 \times 10 {}^{ - 8} }{3 \times 10 {}^{ - 12} }$