MATHEMATICS
HIGH SCHOOL

Answer:

Answer:

what is the problem??

Step-by-step explanation:

MIDDLE SCHOOL

93+[68+7]

WHAT IS THE ANWSER

In these problems, we always solve inside the parenthesis. So. 68+7 is 75, so then we add the numbers outsized of the parenthesis. 75+93 is 168. Final answer is 168.

To solve this the first thing you do is the () so 68+7=75. Next you do 75+93=168. I hope this helped. :) Brainlest answer?

HIGH SCHOOL

If one third a number is 8 what is the number

The number is 24. If 8 is one third of the number, you multiply 8 by 3 to find the number, which is 24.

If a third of a number is 8, then to find the total number, you have to multiply the number by 3, as 1/3 by 3 is 3/31, which is 1. 8x3 is 24. Therefore, the number that you're looking for is 24 Hope this helps :)

HIGH SCHOOL

Simplify the expressions. Show your work. 1.(3x(4x4 – 5x)

2.(5x4 – 3x3 + 6x) – ( 3x3 + 11x2 – 8x)

3. (x – 2) (3x-4)

4.(x + 6)2

1. (3x(4x^4 - 5x))

Steps

Distributive Formula: a(b + c) = ab + ac

a = 3x

b = 4x^4

c = -5x

= 3x * 4x^4 + 3x(-5x)

= 3x * 4x^4 - 3x * 5x

Simplify,

= 12x^5 - 15x^2

2. (5x^4 - 3x^3 + 6x) - (3x^3 + 11x^2 - 8x)

Steps

Remove the parentheses: (a) = a

= 5x^4 - 3x^3 + 6x - (3x^3 + 11x^2 - 8x)

-(3x^3 + 11x^2 - 8x): -3x^3 - 11x^2 + 8x

= 5x^4 - 3x^3 + 6x - 3x^3 - 11x^2 + 8x

Then simplify,

= 5x^4 - 6x^3 - 11x^2 + 14x

3. (x - 2)(3x - 4)

Steps

Distributive formula: (a + b)(c + d) = ac + ad + bc + bd

a = x

b = -2

c = 3x

d = -4

= x * 3x + x(-4) - 2 * 3x - 2(-4)

= x * 3x - x * 4 - 2 * 3x + 2 * 4

Then simplify,

= 3x^2 - 10x + 8

4. (x + 6)^2

Steps

Formula: (a + b)^2 = a^2 + 2ab + b^2

a = x

b = 6

= x^2 + 2x * 6 + 6^2

Simplify,

= x^2 + 12x + 36

Steps

Distributive Formula: a(b + c) = ab + ac

a = 3x

b = 4x^4

c = -5x

= 3x * 4x^4 + 3x(-5x)

= 3x * 4x^4 - 3x * 5x

Simplify,

= 12x^5 - 15x^2

2. (5x^4 - 3x^3 + 6x) - (3x^3 + 11x^2 - 8x)

Steps

Remove the parentheses: (a) = a

= 5x^4 - 3x^3 + 6x - (3x^3 + 11x^2 - 8x)

-(3x^3 + 11x^2 - 8x): -3x^3 - 11x^2 + 8x

= 5x^4 - 3x^3 + 6x - 3x^3 - 11x^2 + 8x

Then simplify,

= 5x^4 - 6x^3 - 11x^2 + 14x

3. (x - 2)(3x - 4)

Steps

Distributive formula: (a + b)(c + d) = ac + ad + bc + bd

a = x

b = -2

c = 3x

d = -4

= x * 3x + x(-4) - 2 * 3x - 2(-4)

= x * 3x - x * 4 - 2 * 3x + 2 * 4

Then simplify,

= 3x^2 - 10x + 8

4. (x + 6)^2

Steps

Formula: (a + b)^2 = a^2 + 2ab + b^2

a = x

b = 6

= x^2 + 2x * 6 + 6^2

Simplify,

= x^2 + 12x + 36

Answer:

holabwhejjejensnsnnsdmdmd

HIGH SCHOOL

Stephen walks dogs to make money over the summer. At the beginning of the summer, he has $41. The table shows the total amount of money Stephen has after walking the given number of dogs. Number of dogs walked Total amount of money ($)

0 41

5 66

10 91

15 116

What is the equation in slope-intercept form that represents the total amount of money Stephen has?

Y=(x×5+41) where the x is number of dogs he has walked. And the y is money he has made

HIGH SCHOOL

If cos Θ = negative two over five and tan Θ > 0, what is the value of sin Θ? negative square root 21

negative square root 21 over 5

square root 21 over 5

square root of 21 over 2

If cos(teta) is negative number that means that angle teta is in either second or third quadrant of x-y coordinate system. Now, because tan( teta) is greater than 0 that means that teta is in either first or third quadrant.

Knowing both of these conditions we can conclude that teta is in third quadrant.

Sin of angle in third quadrant is negative. Now we need to calculate its value.

sin^2(teta) = 1-cos^2(teta)

sin^2(teta) = 1-4/25 = 21/25

sin(teta) = -√21/5

answer is second option

Knowing both of these conditions we can conclude that teta is in third quadrant.

Sin of angle in third quadrant is negative. Now we need to calculate its value.

sin^2(teta) = 1-cos^2(teta)

sin^2(teta) = 1-4/25 = 21/25

sin(teta) = -√21/5

answer is second option

HIGH SCHOOL

Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 x 1012 miles. Suppose a star is 3.2 x 102 light-years from Earth. In scientific notation, approximately how many miles is it A 1.88 x 1012

B 5.88 x 1014

C 3.2 x 1015

D 1.88x 1015

The answer is C. 3.2 x 1015

Your answer will be c

MIDDLE SCHOOL

A construction worker bought several bottles of juice for $3 at the convenience store. She paid for them with a $20 bill. If j represents the number of bottles of juice, write an expression for the change she should receive

20 - 3j

I guess it would be this. Since 20 is the total minus 3(price for the juice) multiplied by the number of bottles of juice. we should get a total of cost charged for, subtract from 20 and get the change amount.

I guess it would be this. Since 20 is the total minus 3(price for the juice) multiplied by the number of bottles of juice. we should get a total of cost charged for, subtract from 20 and get the change amount.

MIDDLE SCHOOL

If Doris paid $24.30 for 8.1 pounds of Swiss cheese, what was the price of 1 pound of Swiss cheese? Do not include $ in your answer.

It should be 3, I’m not sure

HIGH SCHOOL

what is the equation of the line perpendicular to the line y=4/9x-2 that passes through the point (4,3)?

Y = 4/9x - 2....the slope here is 4/9, but for a perpendicular line, we need the negative reciprocal. All that means is " flip " the slope and change the sign.

So the slope we need to use is -9/4

y = mx + b

slope(m) = - 9/4

(4,3)...x = 4 and y = 3

now we sub and solve for b, the y int

3 = -9/4(4) + b

3 = - 9 + b

3 + 9 = b

12 = b

so ur perpendicular line is :y = -9/4x + 12

So the slope we need to use is -9/4

y = mx + b

slope(m) = - 9/4

(4,3)...x = 4 and y = 3

now we sub and solve for b, the y int

3 = -9/4(4) + b

3 = - 9 + b

3 + 9 = b

12 = b

so ur perpendicular line is :y = -9/4x + 12

Answer:

y = -9/4x + 12

Step-by-step explanation: