10. need help with this question-percentages and proof

Answer: x = -10

Isolate the variable by dividing each side by factors that don't contain the variable.

Answer:

x= -10

Step-by-step explanation:

7x-4(-4x-16)=-166 foil the ()

7x+16x+64= -166  combine terms

23x+64= -166  subtract 64 to both sides

23x= -230  divide by 23

x= -10

Answer:

9x= 360 -180

x= 180/9

x= 20°

Answer:

x = 30

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here n = 5, thus

sum = 180° × 3 = 540°

Sum the given angles and equate to 540, that is

x + 106 + 90 + 74 + 8x = 540, simplify

9x + 270 = 540 ( subtract 270 from both sides )

9x = 270 ( divide both sides by 9 )

x = 30

Answer:

IV

Step-by-step explanation:

The Y column is the same, and so is the graph.

Answer: w = 20 l = 38

Step-by-step explanation:

l = 2w - 2 (based on given info)

p = 2l + 2w (formula for perimeter)

p = 116 (given)

116 = 2l + 2w

116 = 2(2w-2) + 2w (substitute in l)

116 =‘ 4w-4 + 2w

116 = 6w-4

w=20

l=2(20) - 2 = 38

Answer:

Step-by-step explanation:

20,000 students 50% are accepted so that is 10,000 students of that 10,000 only 25% enroll which is 2,500.

Answer:

2,500 students

Step-by-step explanation:

50% of 20,000 is the amount of students that were accepted. That makes 10,000 students accepted. 25% of 10,000 is the amount enrolled. 25% is 1/4. So 1/4 of 10,000 is 2,500. So 2,500 students enrolled in that university.

Answer:

Step-by-step explanation:

Answer:

The top right one

Step-by-step explanation:

It’s 111 so first find the one with the 10x10 grid then get the one of ten finally get the one with one

Answer: It is the top right.

Step-by-step explanation:

Answer: -0.35

Step-by-step explanation:

Answer:

- 0.35

Step-by-step explanation:

4.2 / 12 = 0.35

But you would put a negative sign at the end because the 4.2 was a negative but not the 12. (When only one number is negative in an equation the answer also has to be negativ.)

Answer: length 48 width 38

Step-by-step explanation: 48+48+38+38=173

Answer:

counted down

Step-by-step explanation:

it was counting up and went down by couting down in 2

Answer:

27

Step-by-step explanation:

the cube root of 729=9 so sqrt729=27

Answer:

Part A: Figure 1 → Figure 4

Rigid Transformation

Equivalent to a reflection about the origin, or a rotation of 180° clockwise or anticlockwise about the origin which are types of rigid transformation

Part B: Figure 2 → Figure 5

Similarity transformation

Figure 5 is Figure 2 dilated by a scale factor of 1/2, which is a form of a similarity transformation

Step-by-step explanation:

Part A: Figure 1 → Figure 4

The coordinates of the vertices of the preimage are;

(5, 10), (2, 4), (9, 2)

The coordinates of the vertices of the image are;

(-9, -2), (-2, -4), (-5, -10)

Which is equivalent to a reflection about the origin, or a rotation of 180° clockwise or anticlockwise about the origin

Part B: Figure 2 → Figure 5

The coordinate points of figure 2 are;

(-9, 2), (-5, 10), and (-2, 4)

The coordinate points of figure 5 are;

(1, 2), (2.5, -1), and (4.5, 3)

The lengths of the sides of figure 2 are;

√((10 - 2)² + ((-5) - (-9))²) = 4·√5

√((10 - 4)² + ((-5) - (-2))²) = 3·√5

√((2 - 4)² + ((-9) - (-2))²) = √53

The lengths of the sides of figure 5 are;

√(((-1) - 2)² + (2.5 - 1)²) = (3·√5)/2

√((4.5 - 2.5)² + (3 - (-1))²) = 2·√5

√((4.5 - 1)² + (3 - 2)²) = (√53)/2

Therefore. Figure 5 is Figure 2 dilated by a scale factor of 1/2

Therefore, given that the sides of Figure 2 and Figure 5 are rotated by 180°

We have;

Figure 5 is obtained as follows;

1) The rotation of figure 2 by 180°, clockwise or anticlockwise about the origin to get;

(-9, 2), (-5, 10), and (-2, 4) → (9, -2), (5, -10), and (2, -4)

2) The image is translated left by 1 blocks and up by 6 blocks as follows;

(9, -2), (5, -10), and (2, -4)  → (8, 4), (4, -4), and (1, 2)

3) The image is then dilated by a scale factor of 1/2  with a center of dilation of (1, 2) to get;

Preimage (8, 4), (4, -4), and (1, 2) → Image (1, 2), (2.5, -1), and (4.5, 3).

Answer:

Lashawn used 15, $0.50 stamps, 21, $0.35 stamps, and 8, $0.02 stamps to mail the package

Step-by-step explanation:

The given parameters are;

The number of stamps Lashawn used to mail the small package = 44

The price of the combination of 44 stamp = $15.01

The price categories of the stamps are $0.50, $0.35, and $0.02

The number of $0.35 stamps = 2 × The number of $0.50 stamps - 9

Let, x represent the number of $0.50 stamps Lashawn used to mail the package

We have;

The number of $0.50 stamps Lashawn used to mail the package = x

The number of $0.35 stamps = 2 × x - 9 = 2·x - 9

The number of $0.35 stamps = 2·x - 9

The number of $0.02 stamps = 44 - x - (2·x - 9) = 44 - x - 2·x + 9 = 53 - 3·x

The number of $0.02 stamps = 53 - 3·x

Which gives;

0.5 × x + 0.35 × (2·x - 9) + 0.02 × (53 - 3·x) = 15.01

0.5·x + 0.7·x - 3.15 + 1.06 - 0.06·x = 15.01

1.14·x - 2.09 = 15.01

1.14·x = 15.01 + 2.09 = 17.1

x = 17.1/1.14 = 15

x = 15

The number of $0.50 stamps Lashawn used to mail the package = x = 15 stamps

The number of $0.50 stamps Lashawn used = 15 stamps

The number of $0.35 stamps Lashawn used = 2·x - 9 = 2 × 15 - 9 = 21 stamps

The number of $0.02 stamps Lashawn used = 53 - 3·x = 53 - 3 × 15 = 8 stamps.

Answer:

1.6

Step-by-step explanation:

you plug it into a calculator

Answer:

B.) 1.6

Step-by-step explanation:

9514 1404 393

Answer:

  $24,164,000

Step-by-step explanation:

The yearly salaries form an arithmetic sequence with a first term of 1700000 and a common difference of 4000.

The sum of n terms of an arithmetic sequence with first term a1 and common difference d is ...

  Sn = (2a1 +d(n -1))(n/2)

For the given numbers, the sum of 14 years' salaries will be ...

  S14 = (2·1,700,000 +4,000(14 -1))(14/2) = 24,164,000

The officer will earn $24,164,000 in a 14-year period.

Clearly, we can see that salary of the officer is in form of Arithmetic progession, where :

And we have to find total salary i.e. [tex] \tt s_{n} = ?[/tex]

Now, we know that :

[tex] \large \underline{\boxed{\bf{S_n = \dfrac{n}{2} \Bigg(2a + (n-1) d\Bigg)}}}[/tex]

By substituting values :

[tex] \tt : \implies S_n = \dfrac{14}{2} \Bigg(2(1700000) + (14-1) (4000)\Bigg)[/tex]

[tex] \tt : \implies S_n = \cancel{\dfrac{14}{2}} \Bigg(2\times 1700000 + 13 \times 4000\Bigg)[/tex]

[tex] \tt : \implies S_n = 7 \Bigg(3400000 + 52000\Bigg)[/tex]

[tex] \tt : \implies S_n = 7 \Bigg(3452000\Bigg)[/tex]

[tex] \tt : \implies S_n = 7 \times 3452000[/tex]

[tex] \tt : \implies S_n = 24164000[/tex]

[tex] \large \underline{\boxed{\bf{S_n = \$ 24,164,000}}}[/tex]

Hence, the total amount of money the officer will earn in 14 years is $ 24,164,000.

Answer:

Multiply

Step-by-step explanation:

Answer:

$3850

Step-by-step explanation:

It is given that,

A girl scout troop makes $1100 in two weekends of selling cookies.

2 weekend = $1100

1 weekend = $550

For 7 weekend, we will multiply $550 by 7 as follows :

7 weekend = $550 × 7

= $3850

So, for 7 weekend she will need $3850.

Answer:

Aphrodite

Step-by-step explanation:

Aphrodite is the goddess of love. I have done this question!

Answer:

24 questions

Step-by-step explanation:

Given

[tex]Score = 75\%[/tex]

[tex]Correct\ Questions = 18[/tex]

Required

Determine the number of question

Represent this with n.

Since each question has 1 point each, then

[tex]Score * Number\ of\ questions = Correct\ Questions[/tex]

Substitute values for Score, Number of Questions and Correct Questions

[tex]75\% * n = 18[/tex]

Make n the subject.

[tex]n = \frac{18}{75\%}[/tex]

Convert percent to decimals

[tex]n = \frac{18}{.75}[/tex]

[tex]n = 24[/tex]

Hence, there are 24 questions in total

Answer: The following shapes are similar. If they were congruent, their side lengths would be proportional but they are not. Thus, they are similar

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

hope this will help u.........

Answer:

I think the answer should be A

Answer:

Option d is correct that is range of the function is all multiples of 10 between 150 and 400, inclusive.

Step-by-step explanation:

We have been given the information that gretta is selling x raffle ticket by a function

f(x)=10 x

Range is the values that y takes in a particular function

Here, we will get any value which is multiple of 10 since we have a function 10 times of something whatever value we put for x we will get multiple of 10.

Hence, Option d is correct that is range of the function is all multiples of 10 between 150 and 400, inclusive.

Answer:

Money

Step-by-step explanation:

Ads help provide money for the company.

HOPE THIS HELPED

Answer:

The domain of R = [-2, ∞)

Step-by-step explanation:

We know that the domain of a function is the entire set of input values for which the function remains real and defined.

Given the attached graph, we can observe that at point x=-2 the graph heads towards positive infinity.

i.e. [-2, ∞) is the interval.

It means from x=-2 onwards to the positive infinity i.e. the interval [-2, ∞), the graph is representing the domain.

Therefore, the domain of R = [-2, ∞)

Answer:

5 dollars

Step-by-step explanation:

Answer:

The price of an adult ticket is $5

Step-by-step explanation:

5*5=25

31-25=6

4*5=20

62-20=42

42÷7=6