Mathematics High School

## Answers

**Answer 1**

**Answer:**

Hi, the answer should be (-4,-6)

**Step-by-step explanation:**

## Related Questions

Find [f g](x) if g(x) = x + 1 and f(x) = 2x ^ 2 - 5x + 8

### Answers

**Answer:**

[tex]2x^{2}[/tex] - x + 5

**Step-by-step explanation:**

g(x)=x+1

f(x)=[tex]2x^{2}[/tex]-5x+8

f∅g(x)=2[tex](x+1)^{2}[/tex]-5(x+1) + 8

= 2([tex]x^{2}[/tex]+2x+1) - 5x - 5 + 8

= [tex]2x^{2}[/tex] +4x +2 - 5x +3

=[tex]2x^{2}[/tex] -x +5

:)

Solve the system by substitution.

x + 6y = -2

-x= 3y - 10

### Answers

**Answer:**

x = 22, y = -4

**Step-by-step explanation:**

x + 6y = -2 --- Equation 1

-x = 3y - 10 --- Equation 2

Equation 2 ×(-1): x = -3y + 10 --- Equation 3

**Substitute x = -3y + 10 into Equation 1: **

x + 6y = -2

-3y + 10 + 6y = -2

3y + 10 = -2

3y = -2-10

= -12

y = -12 ÷ 3

**y = -4 **

**Substitute y = -4 into Equation 3: **

x = -3y + 10

x = -3(-4) + 10

= 12 + 10

**x = 22**

doing percent of a fraction, how do i calculate: 95% of what is 68?

### Answers

**Answer:**

71.58

**Step-by-step explanation:**

95/100(x)=68

simplify the fraction: 19/20(x)=68

multiply 20 to get rid of the denominator: 19x=1360

divide 19 to get x: x=71.58

Wally must complete 40 hours of community service. He does 3 hours each day. Write a linear equation to represent the hours Wally has left after x days.

### Answers

**Answer: y = 40 - 3x**

**Step-by-step explanation:**

x = # of days

y= number of hours remaining

40 minus 3 times the number of days Wally volunteers would be the formula to find the number of hours he has remaining after a certain number, x, days.

The Hawks have 112 games which is 60% of the games they have played this year how many games have the Hawks played this season

### Answers

Answer:

187 games

Step-by-step explanation:

Calculation for how many games have the Hawks played this season

Numbers of games played=112 games/0.60

Numbers of games played=187 games

Therefore the numbers of games that Hawks

have played this season is 187 games

Choose the correct graph of the given system of equations. (1 point)

y + 2x = -1

3y – x = 4

### Answers

**Answer:**

y=2x-1

y=x+4/3

**Step-by-step explanation:**

The graphs below have the same shape What is the equation of the blue graph?

### Answers

**Step-by-step explanation:**

C

**Answer:**

Guy above me is wrong, it's actually D! Hope this helps.

**Step-by-step explanation:**

4x times4b be fast nowwwwwwwwwwwwwwww pls

### Answers

**Answer:**

16xb

**Step-by-step explanation:**

In algebra the numbers are multiplied with the numbers and the variables are multiplied with the variables.

In this question we would multiply x with b and 4 with 4 .

Multiplying x with b would give xb and 4 with 4 gives 16

So the answer will be 16xb

For example if you have 3x and 10 z the answer would be 30xz

Find the maximum value of

P = x + 6y

subject to the following constraints:

(2x + 4y < 10

X + 9y < 12

x > 0

y0

P = [?]

### Answers

**Answer:**

(3, 1)

**Step-by-step explanation:**

Given the following constraints:

2x + 4y ≤ 10

x + 9y ≤ 12

x ≥ 0

y ≥ 0

We have to first graph the above constraints and secondly, we find the boundary points for the feasible region. This is done by plotting the graphs of 2x + 4y ≤ 10 and x + 9y ≤ 12.

From the graph, the following points satisfy the constraints:

(0,0), (3,1), (0,4/3), (5,0)

Given that:

P = x + 6y

For (0, 0): P = x + 6y = 0 + 6(0) = 0

For (3, 1): P = x + 6y = 3 + 6(1) = 9

For (0, 4/3) P = x + 6y = 0 + 6(4/3) = 8

For (5, 0) P = x + 6y = 5 + 6(0) = 5

Answer:

9

Step-by-step explanation:

Acellus algebra 2

Roger can make 3 bird houses in 5 hours. Which proportion could be used to determine how many bird houses Roger could build in 20 hours?

### Answers

**Answer:**

the answer should be 12

**Step-by-step explanation:**

A political poll showed that 80 percent of those polled said they would vote for proposition P. Of those who said they would vote for proposition P,70 percent actually voted for P,and of those who did not say they would vote for P,20 percent actual voted for P.What percent of those polled voted for P

### Answers

Answer:

60%

Step-by-step explanation:

Let the total number of people polled to vote be 1000

80% said they would vote for him

That is 800

20% said they would not vote for him

That is 200

Out of the 800, 70% actually voted

That will be ;

70/100 * 80 = 560

Also, 20% of the 200 that said they would not vote actually voted

That will be ;

20/100 * 200 = 40

Total is thus;

569 + 40 = 600

% is 600/1000 = 60%

30 ⅓ % of 3 plz help me

### Answers

**Answer:**

3 / 10 is the answer in fraction and 0.3 is the answer in decimal.

**Step-by-step explanation:**

hope this answer will help you

have a great time

ABDE is an isosceles trapezoid. Select all

pairs of congruent triangles.

A. Triangle ABE and triangle DBE

B. Triangle ABD and triangle DAE

C. Triangle ABE and triangle BAD

D. Triangle AED and triangle BDE

E. Triangle EAB and triangle EDB

### Answers

**Answer:**

**Step-by-step explanation:**

triangles that are the same are congruent

A) no

B) no

C) yes

D) yes

E) no

If f(x) = 2/3x^2 +8 , what is the value of f(6)?

### Answers

**Answer:**

f(6) = 32

**General Formulas and Concepts:**

Pre-Algebra

Order of Operations: **BPEMDAS**

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right

Algebra I

Function Notation

**Step-by-step explanation:**

Step 1: Define

f(x) = 2/3x² + 8

f(6) is x = 6

Step 2: Evaluate

Substitute in *x*: f(6) = 2/3(6)² + 8Exponents: f(6) = 2/3(36) + 8Multiply: f(6) = 24 + 8Add: f(6) = 32

**Answer:**

f(6)= 72

**Step-by-step explanation:**

f(6)= 72

to evaluate:

substitute x = 6 into

f(x)f(6)= 23 × (6) 2 + (8×6)×x = 231 × 3612+ 48

The line passing through which two points is parallel to the line x - 2y = 16?

A) -6,-1 and 2,-5

B) -4,-6 and 2,-9

C) -5,7 and 0,-3

D) -1, 5 and 3,13

E) -4,7 and -2,8

### Answers

**Answer:**

E) -4,7 and -2,8

**Step-by-step explanation:**

parallel lines have same slope

x - 2y = 16

y = 1/2 x -8 slope: 1/2

E. slope = Δy / Δx = (8-7) / (-2 - -4) = 1/2

Using the **slope**, it is found that the line passing through **points (-4,7) and (-2,8), option E,** is parallel to the given line.

----------------------

The equation of a **line**, in **slope-intercept formula**, is given by:

[tex]y = mx + b[/tex]

In which **m** is the **slope**.If two lines are **parallel**, they have the same **slope**.Given two points, the slope is given by change in y divided by change in x.

----------------------

The **line **given is:

[tex]x - 2y = 16[/tex]

In** slope-intercept** formula:

[tex]2y = x - 16[/tex]

[tex]y = \frac{x}{2} - 8[/tex]

----------------------

In this question, we want a line with an **slope of 1/2.**

At** option E**, the points are **(-4,7) and (-2,8)**, thus, the slope is:

[tex]m = \frac{8 - 7}{-2 - (-4)} = \frac{1}{-2 + 4} = \frac{1}{2}[/tex]

Thus, the line passing through **points (-4,7) and (-2,8), option E,** is parallel to the given line.

A similar problem is given at https://brainly.com/question/22532445

Describe the lines below as parallel, perpendicular,or neither.

3x+6y=42 and y=2x-1

### Answers

**Answer:**

They are neither perpendicular nor parallel.

**Step-by-step explanation:**

Find the gradient of 2x + 6y = 42 by rearranging it in the form y = mx + c:

6y = -2x + 42

y = -(1/3)x + 7

The gradient is the co-efficient of x

Therefore the gradient is -(1/3)

The gradient of y = 2x - 1 is 2.

If they were parallel they would have the same gradient.

If they were perpendicular then the gradient of one would be the negative reciprocal of the other, e.g: if one was 2, the other would be -(1/2).

Neither of these are true, so they are neither perpendicular nor parallel.

The **lines** 3x+6y=42 and y=2x-1 **are perpendicular**

Two lines are** parallel** if they have **equal slope**

Two lines are **perpendicular **if the **product** of their slopes **equals -1**

The given lines are:

3x+6y=42 and y=2x-1

**Rewrite** each of the equations in the form** y = mx + c**

For **line 3x + 6y = 42**:

[tex]6y = -3x + 42\\\\y=\frac{-3}{6} x+\frac{42}{6}\\\\y=-0.5x+7[/tex]

The slope, **m₁ = -0.5**

For line** y = 2x - 1**

The slope, **m₂ = 2**

Since **m₁ ≠ m₂**, lines 3x+6y=42 and y=2x-1 are **not parallel**

m₁ m₂ = -0.5(2)

m₁ m₂ = -1

Since the **product** of the slopes **equals -1**, the **lines** 3x+6y=42 and y=2x-1 **are perpendicular**

Learn more here: https://brainly.com/question/20093063

Find the third side in simplest radical

form:

3

5

### Answers

**Answer:**

4?

**Step-by-step explanation:**

You buy 5 balloons and 3 banners for $14. Your friend buys 1 balloon and

1 banner for $4. How much does each item cost?

### Answers

**Answer:**

4 DLLS

**Step-by-step explanation:**

Rewrite the radical expression as an expression with a rational exponent.

pls help

### Answers

**Answer:**

come on baexz f** me in 69

**Answer:**

[tex]\sqrt[7]{x^{3} }= x^{\frac{3}{7} }[/tex]

**Step-by-step explanation:**

In order to solve this question we need to understand the following.

[tex]\sqrt{x}[/tex] = [tex]x^{\frac{1}{2} }[/tex]

[tex]\sqrt[3]{x} = x^{\frac{1}{3} }[/tex]

[tex]\sqrt[4]{x}= x^{\frac{1}{4} }[/tex]

(Notice that the numerator of the fraction is the power of the x that is being squared)

If you need proof here it is.....

[tex]\sqrt{x} = x^{\frac{1}{2} }[/tex]

[tex](\sqrt{x} )^{2}[/tex] = [tex](x^{\frac{1}{2} } )^{2}[/tex]

x = x

Now that we got that out of the way we can rewrite [tex]\sqrt[7]{x^{3} }[/tex] as........

[tex]\sqrt[7]{x^{3} }= x^{\frac{3}{7} }[/tex]

Paula is a banker who earns $15 per hour. If Paula worked 63 hours at her job, how much money did she earned? Please answer this is for my sister

### Answers

paula made $945 if you multiply $15 x 63

give an example of infinite solution

### Answers

**Answer:**

?

**Step-by-step explanation:**

an example of an i finite solution is

3=3

Mark incorrectly evaluated the expression 4x+12-x to the power of 2 where is x-2. Identify and correct mark’s mistake.

Plsss help mw

### Answers

**Answer:**

The value of [tex]4x+12-x^2[/tex] is 16.

**Step-by-step explanation:**

The given expression is [tex]4x+12-x^2\ at\ x=2[/tex].

Put x = 2 in the above expression as follows :

[tex]4x+12-x^2=4(2)+12-(2)^2\\\\=8+12-4\\\\=16[/tex]

**Hence, the final answer is 16.**

John, who is 42 years old, has a nephew age 9. In how many years will the age of his nephew be one-fourth John's age. Solve algebraically.

### Answers

**Answer:**

hope this is correct..........

Will give Brainliest!! This graph models the number of teachers assigned to a school, as determined by the number of students. What is the constant of proportionality? Number of Teachers A line graph titled Number of Teachers has number of students on the x-axis, and number of teachers on the y-axis. For every 60 students, there are 4 teachers; 120, 8. StartFraction 1 over 25 EndFraction StartFraction 1 over 20 EndFraction StartFraction 1 over 15 EndFraction StartFraction 1 over 10

### Answers

**Answer:**

b

**Step-by-step explanation:**

rude people delete meh answers

rude the answer is b

thank u very much now i must b on my way

**Answer:**

Its B

**Step-by-step explanation:**

Because the first one is correct give the credit to her.

Suppose that the function g is defined, for all real number, as follows.

### Answers

**Answer:**

g(-3) = [tex]\frac{17}{4}[/tex]

g(2) = -3

g(5) = [tex]-\frac{7}{4}[/tex]

**Step-by-step explanation:**

Let us solve the question

∵ g(x) = [tex]-\frac{3}{4}[/tex] x + 2, x ≠ 2

→ That means we can use it for any value os x except 2

∵ g(x) = -3, x = 2

→ That means we will use it only if x = 2

We want to find g(-3)

∵ **x = -3** ⇒ ≠ 2

∴ We will use g(x) = [tex]-\frac{3}{4}[/tex] x + 2

→ Substitute x by -3

∵ g(-3) = [tex]-\frac{3}{4}[/tex] (-3) + 2

∴ g(-3) = [tex]\frac{9}{4}[/tex] + 2

∴ **g(-3) = **[tex]\frac{17}{4}[/tex]

We want to find g(2)

∵ **x = 2**

∴ We will use g(x) = -3

→ This is a constant function which means g(2) equal to -3

∴ **g(2) = -3**

We want to find g(5)

∵ **x = 5** ⇒ ≠ 2

∴ We will use g(x) = [tex]-\frac{3}{4}[/tex] x + 2

→ Substitute x by 5

∵ g(5) = [tex]-\frac{3}{4}[/tex] (5) + 2

∴ g(5) = [tex]-\frac{15}{4}[/tex] + 2

∴ **g(5) = **[tex]-\frac{7}{4}[/tex]

Plz answer this!⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️

### Answers

**Answer:**

1/2 ÷ 3/10

1/2×10/3

5/3

1 2/3

1) option is correct

9514 1404 393

**Answer:**

1) 1 2/3

**Step-by-step explanation:**

**The model of choice 1** shows that 3/10 goes into 1/2 one and two-thirds times. That also happens to be the only model with the correct result.

1/2 ÷ 3/10 = 5/10 ÷ 3/10 = 5/3 = **1 2/3**

PLS HELP (LAST QUESTION)

If you have 360 Nickels, how many dollars do you have?

- 18

- 7,200

- 340

- 380

### Answers

**Answer:**

You would have $18

**Step-by-step explanation:**

Have a good day!

at the book fair 26 books were sold in the first 2.5 hours at this rate how many books will be sold in the 10 hours of the book fair

A. 78

B. 26

C. 104

D. 52

### Answers

**Answer:**

**Step-by-step explanation:**

if 26 books were sold in 2.5 hours

26 books.......................................2.5 hours

? books............................................10 hours

the books sold in 10 h

=(26*10)/2.5=104

Hey,

*Answer** **;*

*C*

2,5→26

10→x

2,5.x=26.10

2,5x=260

25x=2600

x=104

*Good **luck^**-**^*

What is an equation of the line that passes through the point (-5, -1) and is

parallel to the line 4x + 5y = 45?

### Answers

**Answer****:**

y = -4/5 x - 5

**Step-****by-step**** explanation****:**

What is the value of y = 3x -1 when x is equal to 4?

### Answers

Answer:

11

Step-by-step explanation:

Y = 11 when x is equal to 4.

y = (3)(4) − 1

Answer:

y = 11