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3 years ago

PLEASE HELP ASAP FOR 10 POINTS

Mathematics

1 answer:

RUDIKE [14]3 years ago

5 0

The easiest way to do this is to distribute one term to the second set of parentheses and add eveything. Start with x2 and distribute to get x^4 + x^3 + 2x^2. Then the 3x distributed gets you 3x^3 + 3x^2 +6x. Finally the 1 distributed gets you x^2 + x + 2. You add all three answers together to get x^4 + 4x^3 + 6x^2 + 7x + 2

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What is the volume of the figure below, which is composed of two cubes with side lengths of 9 units?

ivann1987 [24]

Answer:

C. 1458 cubic units

Step-by-step explanation:

one cubes side length is 9. The only side that changes is the length since the size is doubled so instead of it 9 it would be 18.

V= L × W × H

= 18 × 9 × 9

= 1,458

hope this helped youuu

8 0

3 years ago

A 2 pound box of salt sells for $.89 and a 5 pound box sells for 2.09. What is the linear equation for this?

castortr0y [4]

Y = ax + b;

0.89 = a * 2 + b and 2.09 = a * 5 + b =>
=> 2.09 - 0.89 = a * 5 + a * 2 + b - b => 1.20 = 3 * a => a = 1.20 / 3 => a = 0.40;
b = 0.89 - 0.40 * 2 => b = 0.89 - 0.80 => b = 0.09;

y = 0.40x + 0.09 => 0.40x - y + 0.09 = 0 is the linear equation.

4 0

3 years ago

Help plz!! Show work , need help on this

lilavasa [31]

Answer:

Step-by-step explanation:

n = 3 => f(n) = -4*-3+8 = -44

n= 0 => f(n) = -4*0+8 = 8

n= 2 => f(n) = -4*2+8 = 0

n= 7 => f(n) = -4*7+8 = -20

5 0

3 years ago

it rained nine days in the month of april .based on this ,what is the probaility that is does not rain on the first day of may?

attashe74 [19]

<h3>Answer: 7/10</h3>

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Explanation:

There are 30 days in April. Since it rained 9 of those days, the empirical probability of it raining in April is 9/30 = (3*3)/(3*10) = 3/10.

If we assume that the same conditions (ie weather patterns) hold for May, then the empirical probability of it raining in May is also 3/10. By "raining in May", I mean specifically raining on a certain day of that month.

The empirical probability of it not raining on the first of May is therefore...

1 - (probability it rains)

1 - (3/10)

(10/10) - (3/10)

(10-3)/10

7/10

We can think of it like if we had a 10 day period, and 3 of those days it rains while the remaining 7 it does not rain.

6 0

3 years ago

Who’s done this packet already? Or who’s finished it? MESSAGE ME ASAP! Thanks!!!!

Zina [86]

Answer:

1. D. 2x + y = 4

2. A

Step-by-step explanation:

Problem 1:

To find the equation in standard form, first find the equation of the graph in slope-intercept form, y = mx + b.

Where, m = slope and b = y-intercept.

Slope (m) = ∆y/∆x

Using two points on the line, (0, 4) and (2, 0):

Slope (m) = (0 - 4)/(2 - 0) = -4/2 = -2

m = -2

y-intercept is the y-coordinate of the point where the line intercepts the y-axis = 4.

Thus,

b = 4

Substitute m = -2, and b = 4 into y = mx + b:

y = -2x + 4

Rewrite in standard form:

2x + y = 4

Problem 2:

The funtion y = ½(x) + 2 is given in the slope-intercept form y = mx + b.

m = slope = ½

b = y-intercept = 2

Therefore, the graph that has a slope value of ½ and y-intercept value of 2 would be the graph that represents the given function.

Thus, the graph in option A, has a y-intercept (b) value of 2 (the line intercepts the y-axis at y = 2).

Also, the slope of graph A = ½.

Therefore, the answer is option A.

4 0

3 years ago