8. Expand, then simplify: (2 Points) (2a – 3) (a2 + 3a - 5) ​

Answer:

x = 6

Step-by-step explanation:

Using the exterior angle theorem

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

79° is an exterior angle of the triangle , then

8x - 13 + 9x - 10 = 79

17x - 23 = 79 ( add 23 to both sides )

17x = 102 ( divide both sides by 17 )

x = 6

Answer:

y = 4 and x = 11

Step-by-step explanation:

x = y + 7                  Substitute the first equation into the second equation and

                               solve for y

x + 1 = 3y

y + 7 + 1 = 3y

8 = 2y

4 =   y                      x = y + 7

                               x = 4 + 7

                                 x = 11

[tex]Perimeter = \\ 9v - 7 + v + 10 + 9v - 7 + v + 10 \\ = 9v - v + 9v + v - 7 + 10 - 7 + 10 \\ = 8v + 10v - 17 - 17 \\ = 18v - 34[/tex]

- BRAINLIEST answerer

Answer:

what table ..............there is no table

Answer:

supplementary angle

Step-by-step explanation:

please Mark my answer in brainlist

Answer:

y = 72

Step-by-step explanation:

Given y varies jointly as x and z then the equation relating them is

y = kxz ← k is the constant of variation

To find k use the condition y = 12 when x = 4 and z = 3

12 = k × 4 × 3 = 12k ( divide both sides by 12 )

1 = k

y = xz ← equation of variation

When x = 9 and z = 8 , then

y = 9 × 8 = 72

Answer:

13.5

Step-by-step explanation:

use soh cah toa

cos 30 × 9√3= n

Answer:

125 is answer .........:)

Answer:

More; less

Step-by-step explanation:

Applying force to be lifted up to a platform requires more force to get it there. I believe the crate would have a reduced distance. I hope this helps.

Answer: The percent of increase is 66.67%.

Step-by-step explanation:

Find the percent of increase of baseball cards.

Step 1: Subtract the starting value from the final value.

                                       65 - 39 = 26

Step 2: Take the value you get and divide it by the starting value.

                                       26 ÷ 39 = 0.666667

Step 3: Multiply what you get by 100.

                                       0.666667 × 100 = 66.6667

Step 4: Round what you get the nearest hundredth of a percent.

                                        66.6667 → 66.67%

Answer: its sixty-nine

Step-by-step explanation:its my lucky number

Answer:

✓ 45% = 9/20

Step-by-step explanation:

What box?

Answer:

9/20.

Step-by-step explanation:

45/100

= 45/5 /  100/5

= 9/20.

Answer:

THIS THE ANSWER OF YOUR QUESTION. ☜☆☞

MARK ME AS A BRAINLIST PLZ

Answer:Answered 2 years ago. The total of the sum of the measures of any triangle has been proven to be 180 degrees. If the ratio of angle measure is 1:3:6.

Step-by-step explanation:

Answer:

1: 18 3: 54 6: 108

Step-by-step explanation:

A triangle has 180 degrees.

You need to add up all the ratios 1+3+6

Then divide that by 180----> 180/10=18

Then multiply all the ratios by but answer(18)

1*18=18

3*18=54

6*18=108

Answer:

slope = - 2.25

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

9x + 4y = 8 ( subtract 9x from both sides )

4y = - 9x + 8 ( divide through by 4 )

y = - 2.25x+ 2 ← in slope- intercept form

with slope m = - 2.25

Answer:

1.

Sin Q=14/50=7/25

Cos Q=PQ/50

Tan Q=14/PQ

Sin R=PQ/50

Cos R=14/50=7/25

Tan R=PQ/14

2. Tan (48) = x/14, x~~15.549

3. Sin (67) = x/29, x~~26.695

Step-by-step explanation:

REMEMBER SOHCAHTOA (Sin=Opp./Hyp., Cos=Adj./Hyp., Tan=Opp./Adj.)

1.

Sin Q=14/50=7/25

Cos Q=PQ/50

Tan Q=14/PQ

Sin R=PQ/50

Cos R=14/50=7/25

Tan R=PQ/14

2. Tan (48) = x/14, x~~15.549

3. Sin (67) = x/29, x~~26.695

Answer:

Its 65

1ft=304.8mm

Answer:

Step-by-step explanation:

Let n represent am unknown number

Q1) The sum of five times a number and six:

Let n represent an unknown number.

The expression is

Answer:

30s-18

Step-by-step explanation:

(10s-8)+(10s-8)+(7s-1)+(3s-1)=?

Combine like terms.

2(10s-8)+(7s-1)+(3s-1)

Remove parentheses.

2(10s-8)+7s-1+3s-1

Collect like terms.

2(10s-8)+10s-1-1

Subtract.

2(10s-8)+10s-2

Factor out 2 from the expression.

2(10s-8+5s-1)

Collect like terms.

2(15s-8-1)

Subtract.

2(15s-9)

Factor out 3 from the expression.

2x3(5s-3)

Multiply.

6(5s-3)

Simplified=30s-18

Hope this helps :)

Hello there!

3-k-5k=3

Combine like terms:

3-6k=3

-6k=3-3

-6k=0

k=0

Hope it helps!

~Just a determined gal

#CarryOnLearning

[tex]MysteriousNature[/tex]

Answer:

k = 0

Step - By - Step:

1. 3 - k - 5k = 3

3 - 6k =3

2. rearrange terms:

3 - 6k = 3

-6k + 3 = 3

3. Subtract  3 from both sides of the equation:

-6k_3=3

-6k+3-3=3-3

4. simplify:

-6k + 3 - 3 = 3 - 3

-6k = 3 - 3

-6k = 0

5. divide both sides of the equation by the same term:

-6k = 0

-6k/-6 = 0/-6

6. simplify:

k = 0/-6

-3/(-2/5) = -3 * (5/-2)=15/2=7.5

Answer:

im new but im pretty sure its 7.5

Step-by-step explanation:

To solve this expression, we can use PEMDAS or order of operations. Parenthesis. Exponents.

Answer:

x=16.9+34.6

x=51.5

.............................

- BRAINLIEST answerer

Answer:

A rational number can be expressed as a fraction.

√25 = 5 and 5 can be written in the form of a fraction 5/1.

Hope this helps :)

Step-by-step explanation:

when you get a decimal like 0.02 and you want to express it in fraction,this is a simple trick.

first,put your pen at the point and move it forward till you end at the last number.

While you move the pen over each value, you will count the number of jumps and record the number of jumps in zeros i. e

2÷100 and it means that,the last 1or 3or 3whole numbers will become the numerator

Answer:

1.20 percent

Step-by-step explanation:

Answer:

$1,270

Step-by-step explanation:

let x be the total amount of ice cream sold without tax

x + (x*0.0635)=21270

1.0635x=21270

x=20,000

so the amount he needs to send to state is

21270-20000

1,270

Total cost of icecream without cost be x

[tex]\\ \sf\longmapsto x+0.0635x=21270[/tex]

[tex]\\ \sf\longmapsto 1.0635x=21270[/tex]

[tex]\\ \sf\longmapsto x=21270/1.0635=20000[/tex]

Amount to be paid

[tex]\\ \sf\longmapsto 21270-20000=1270[/tex]

The height of Sally's plant in mixed fraction form will be equal to 3 4/5 inches.

The four basic operations of arithmetic can be used to add, subtract, multiply, or divide two or even more quantities.

They cover topics like the study of integers and the order of operations, which are relevant to all other areas of mathematics including algebra, data processing, and geometry.

As per the given information in the question,

Height of Lee's plant = 5 1/2 = 11/2

Let the height of Sally's plant be x.

Lee's plant is 1 7/10 taller than Sally's plant.

Then, the height of Sally's plant will be,

x = 11/2 - 17/10

Take LCM as 10

x = (55 - 17)/10

x = 38/10 = 19/5 inches

It can be written in the mixed fraction form as 3 4/5.

To know more about arithmetic operations:

https://brainly.com/question/13585407

#SPJ5

Answer:

D) 39

Step-by-step explanation:

There are a couple of steps to this. First, note that you must plug in the given number that replaces x into the right side's x. After you find the answers, you must then subtract both answers to get your result.

First step, find g(8):

g(x) = 3x - 2

When x = 8,

g(8) = 3(8) - 2

Remember to follow PEMDAS, the order of operations. First, multiply, then subtract:

g(8) = (3 * 8) - 2

g(8) = (24) - 2

g(8) = 22

Next step, find g(-5):

g(x) = 3x - 2

g(-5) = 3(-5) - 2

g(-5) = (3 * -5) - 2

g(-5) = (-15) - 2

g(-5) = -17

Note that you are subtracting both numbers. When there are two negative signs directly next to each other, it becomes a positive:

22 - (-17) = 22 + 17 = 39

D) 39 is your answer.

~

Answer:

You should always Use addition or subtraction to separate the variable on one side of a equation.

Step-by-step explanation: