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4 years ago

Please help it’s urgent!!!

Mathematics

1 answer:

emmasim [6.3K]4 years ago

5 0

Answer:

The answer is the last one.

Step-by-step explanation:

25 - 19 = 6

It is a half and half chance. So, technically it should be 25 heads and 25 tails.

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Why does -2 to the power of 3 produce the same answer as (-2) to the power of 3

tekilochka [14]

Answer:

because it's an odd exponent

Step-by-step explanation:

-2^3 = -(2*2*2)

(-2)^3 = (-2)*(-2)*(-2)

if it was ^4 the sign would be flipped:

-2^4 = -(2*2*2*2) = -16

(-2)^4 = (-2)*(-2)*(-2)*(-2) = 16

3 0

3 years ago

Read 2 more answers

What is the total cost for the carpet installation, including the cost of carpet, cost of labor, and additional fee? Express you

jonny [76]

She is required to purchase a piece of carpet which includes a 3-inch overlap on all sides. Labor and material costs will relate to the area of this piece.

The labor costs are $23 per hour, per person.

A two-person carpet crew can lay 50 square feet of carpet each hour.

The crew that will complete the job at Charlotte's house will be a four-person crew.

There is an additional $75 fee to cover the cost of equipment, materials, and supplies.

8 0

3 years ago

The equation of line EF is y = 2x + 1. Write an equation of a line parallel to line EF in slope-intercept form that contains poi

77julia77 [94]

Answer: The answer is (b) $y=2x+2.$

Step-by-step explanation: The equation of a straight line in slope-intercept form is given by

$y=mx+c,$ where, 'm' is the slope and 'c' is the y-intercept of the straight line.

The equation of the given line EF is

$y=2x+1.$

Here, slope, m=2 and y-intercept, c=1.

Since our new line is parallel to the given line, so the slope of the new line=m=2.

So, let the equation of the new line be

$y=mx+d\\\\\Rightarrow y=2x+d.$

Now, since the line passes through the point (0,2), so

$2=2\times 0+d\\\Rightarrow d=2.$

Thus, the equation of the new line parallel to line EF will be

$y=2x+2.$

The correct option is (b).

3 0

4 years ago

Read 2 more answers

In triangle DEF, segment DJ is a perpendicular bisector of side EF. If EJ is 3y-8 and JF is 7y-40, what is the length of JF?

luda_lava [24]

Answer: The length of JF = 16 units.

Step-by-step explanation:

Given: In triangle DEF, segment DJ is a perpendicular bisector of side EF.

i.e. DJ is perpendicular to EF and DJ divides EF into two equal parts EJ and JF. [The perpendicular bisector is a line that is perpendicular to a line segment and splits it into two congruent segments.]

If EJ is 3y-8 and JF is 7y-40.

Then, $3y-8=7y-40$

$\Rightarrow\ 7y-3y=40-8\\\\\Rightarrow\ 4y=32\\\\\Rightarrow\ y=8 \text{ [Divide both sides by 4]}$

JF= 7(8)-40 =56-40= 16 units

Hence, the length of JF = 16 units.

4 0

3 years ago

Read 2 more answers

Answer this please i need help

strojnjashka [21]

Answer:

Slope m = -3

y-intercept (0, 0)

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

m - slope
b - y-intercept

Step-by-step explanation:

Step 1: Define

y = -3x

Step 2: Break Function

Identify Parts.

Slope m = -3

y-intercept b = 0

5 0

3 years ago