Evaluate 2(x - 4) + 3x - XP for x = 4.
A. -6
B. 8
C. -12
D. -4

Answer:

a= 9, b= 11

Step-by-step explanation:

20= a +b

Let's rewrite this so that the variables are on the left-hand side of the equation:

a +b= 20 -----(1)

I have also labelled the equation as equation (1).

Since b is two more than a,

b= a +2 -----(2)

Label the equation as equation (2).

Substitute (2) into (1):

a +(a +2)= 20

2a +2= 20

-2 on both sides of the equation:

2a= 20 -2

2a= 18

Divide both sides by 2:

a= 18 ÷2

a= 9

Substitute a= 9 into (2):

b= a +2

b= 9 +2

b= 11

Answer: the numbers are different

Step-by-step explanation: in the form

Answer:

the price would be $72.25 after the coupon

Step-by-step explanation:

(85)(.15)=12.75

85-12.75=72.25

have a nice day.

Answer:

$72.25

Step-by-step explanation:

The original price is 100% of the price since 100% means the entire thing.

The discount is 15%.

100% - 15% = 85%

After taking off the discount, the price is 85% of the original price.

85% of $85 =

= 85/100 × $85

= 0.85 × $85

= $72.25

Answer: $72.25

Answer:

3/15 or 1/3

Step-by-step explanation:

Convert each fraction to a common denominator of 15:

7/15        7/15

2/5         6/15

1/3          5/15

4/15        4/15

Each step subtracts 1/15. so the next step would be 3/15 or 1/3.

Answer:

11

Step-by-step explanation:

50-x=3(24-x)

50-x=72-3x

2x=22

x=11years ago when kate's father was 3 times as old as kate=11

Answer:

[tex]\frac{18z-2}{3} [/tex]

Step-by-step explanation:

see attached for step-by-step

Step-by-step explanation:

[tex] \frac{20z - 1}{3} - \frac{8z + 4}{12} \\ = \frac{12(20z - 1) - 3(8z + 4)}{12 \times 3} \\ \frac{240z - 12 - 24z - 12}{36} \\ = \frac{216z - 24}{36} \\ = 6z - \frac{2}{3} [/tex]

Answer:

x = 9

Step-by-step explanation:

Since you have parallel lines intersected by a transversal, the angles are congruent so set them equal to each other and solve for x.

7x + 17 = 80

Subtract 17 from both sides

7x + 17 - 17 = 80 - 17

7x = 63

Divide by 7

7x/7 = 63/7

x = 9

Answer:

9 students.

Step-by-step explanation:

Assuming you meant 3/8 & 1/4

3/8 students are eating a salad and 1/4 are eating a sandwich

Add these two fractions to get 5/8

(3/8 + 1/4 -> 3/8 + 2/8 = 5/8)

This means that 5/8 of the students are eating one of the above options & 3/8 are not eating these options

Then we need to find 3/8 of 24

1/8 of 24 = 3

3 x 3 = 9

Compare two similar sides:

24:32 this reduces to 3:4

Answer: D) 3:4

Answer:

$45400

Step-by-step explanation:

Let's set up an equation:

125%x=56750

And then we solve...

125/100(x)=56750

5/4(x)=56750

x=56750*4/5

x=$45400

Answer:

-1

Step-by-step explanation:

Answer:

yes, because they are side to side

Step-by-step explanation:

Answer:

Yes these lines are parallel because like the person before me said they are side by side

Step-by-step explanation: If they weren't side by side they would be perpendicular. Perpendicular lines are lines that intersect at a right angle of 90°. Parallel lines are lines that are side by side and do not intersect.

Hope this helps ╰(*°▽°*)╯

Answer:

a x n = n √ a = n = √ a a x = n = √ a a 144 v ⋅ 3 ⋅ V = 432 v V

Step-by-step explanation:

n = √ a a Multiply 3 by 144 . 432 v V

List all of the solutions. a x n = n √

a = n = √ a

a x = n = √ a a 144 v ⋅ 3 ⋅ V = 432 v V

Answer: 24[tex]\sqrt{6}[/tex]

Step-by-step explanation:

1. Identify that 4[tex]\sqrt{18}[/tex] is equal to 4 times [tex]\sqrt{2}[/tex] times [tex]\sqrt{3^2}[/tex]. [tex]\sqrt{3^2}=3[/tex]. Our rational numbers are now 4 and 3. 4 times 3 equals 12, and we have a remainder of [tex]\sqrt{2}[/tex]. Knowing [tex]4\sqrt{18}=12\sqrt{2}[/tex] makes the second step much easier.

2. A fast approach for these types of problems is to multiply the rational numbers together and multiply the irrational numbers separately until the last step. 2 times 12 equals 24. [tex]\sqrt{3}[/tex] times [tex]\sqrt{2}[/tex] equals [tex]\sqrt{6}[/tex].

3. Now we must simply multiply the whole number with the irrational number. 24 times [tex]\sqrt{6}[/tex] equals 24[tex]\sqrt{6}[/tex].

Answer:

Um I'm just guessing

Step-by-step explanation:

2)congruent

3)noncongruent

4)noncongruent

5)noncongruent

6)congruent

7)noncongruent

8)noncongruent

9)noncongruent

10)congruent

my answers might have a high chance it is incorrect but maybe this might still help give a hint or small step on solving the problem?

The solution of given system equation can be calculated by using linear equation of two variable.

The correct option is [tex](3,\dfrac{1}{2})[/tex].

Given:

The given system equation is,

[tex]x+2y=4[/tex]

[tex]2x-2y=5[/tex]

The linear equation of two variables defines as an equation where a, b and r are real numbers where a and b both are not equal to 0.

[tex]ax+by=r[/tex]

Write the general linear equation of two variables.

[tex]a_1x+b_1y=r_1\\ a_2x+b_2y=r_2[/tex]

Comparing the above 4 equations.

[tex]a_1=1, b_1=2, r_1=4\\ a_2=2, b_2=-2,r_2=5[/tex]

Calculate the ratio of [tex]a_1[/tex] and [tex]a_2[/tex], [tex]b_1[/tex] and [tex]b_2[/tex].

[tex]\dfrac{a_1}{a_2}=\dfrac{1}{2}\\ \dfrac{b_1}{b_2}=\dfrac{2}{-2}=-1[/tex]

From the above calculation, [tex]\dfrac{a_1}{a_2}\neq \dfrac{b_1}{b_2}[/tex] the system of the equation has a unique solution.

Now, add the given equation,

[tex]3x=9\\ x=3[/tex]

Substitute the value of [tex]x[/tex] in above equation.

[tex]3+2y=4\\ y=\dfrac{1}{2}[/tex]

Thus, the correct option is [tex](3,\dfrac{1}{2})[/tex].

Learn more about linear equations here:

https://brainly.com/question/11897796

Answer:

B. (3, 1/2)

This is your answer!!!

Answer:

It would be F(0)=4

Step-by-step explanation:

Step-by-step explanation:

for a turning point the first derivative of the function must have zero points (= there must be some values of x that make the derivative function to have 0 as result).

the first derivative is the function that calculates the slope of the tangent at every x. so, if that function result is 0, it means the tangent slope is 0 at this point (a horizontal line), and this could be a real candidate for a turning point.

and then, left and right of such a point, the slope of the tangent must have different signs (+ to - or the other way around).

but if there is no real zero point of the first derivative, then there is no turning point anyway.

the first derivative f'(x) = -2 - 3x²

so,

-2 - 3x² = 0

-3x² = 2

x² = -2/3

x = sqrt(-2/3)

now, the square root of a negative number has no real number solution. so, on our grid of real number coordinates there is no point with a horizontal tangent (with the slope of the tangent = f'(x) = 0).

therefore, there cannot be any turning points.

Answer:

4618.25 sq.km.

Step-by-step explanation:

After 1 year, the forest has shrunk from 4900 sq.km to 4900*(1-0.0575) = 4900*(0.9425)

Answer:

What is the question

Step-by-step explanation:

The cost of the brand less than 6 bags is less than 11.94

If the cost y of a brand can be represented by the equation y=1.99x

where

For a brand that costs less than 6 bags, we will substitute x = 6 into the function

y = 1.99(6)

y = 11.94

Hence the cost of the brand less than 6 bags is less than 11.94

Learn more on cost and functions here: https://brainly.com/question/25109150

Reason:

The purple paint has 4 parts red and 3 parts blue.

The ratio of red to blue is 4:3

Multiply both parts of that ratio by 7 and we end up with 28:21

The two ratios 4:3 and 28:21 will produce the same shade of purple.

Answer:

108°

Step-by-step explanation:

∠4 and ∠2 are vertical angles meaning they have the same value.

Answer:

[tex] \frac{1}{0.2} = \frac{ \frac{1}{1} }{ \frac{2}{10} } = \frac{10}{2} = 5 \: and \: 1 \: and \: 0.2 [/tex]

Step-by-step explanation:

f(x) = (0.2)^x

x = -1

f(-1) = 0.2^-1 = 1/0.2 = 1/1/2/10 = 10/2 = 5

x = 0

f(0) = 0.2^0 = 1

x = 1

f(1) = 0.2

These would be the values for y, then you need to make a graph using them and the ones for,

Answer:

Yeah,I don't see the question