area and perimeter i need help with problems 2 & 3

Answer:

58 minutes

Step-by-step explanation:

Kelvin and Ornella completed the course in 1 hour 52 minutes

60 minutes + 52 minutes

= 112 minutes

Kelvin time is 54 minutes

Kelvin time is 4 minutes less than ornella

Hence Ornella time is 58 minutes

Answer:

4

Step-by-step explanation:

the smaller triangle is being enlarged 4 times

1.5x4 = 6

Answer:

20

Step-by-step explanation:

2x - 1 < 10

Add 1 to both sides:

2x < 11

Divide both sides by 2:

x < 5.5

Answers must be smaller than 5.5, therefore option (D) is the answer.

Answer: D. {2, 3, 4}

<3 - Bee

Answer: 7.71%

Step-by-step explanation:

Number of students in a school last year = 700

Number of students in a school this year = 646

Reduction in the number of students = 700 - 646 = 54

The percentage reduction will be:

= Reduction in number / Last year students × 100

= (54 / 700) × 100

= 7.71%

Answer:

A: Measure of center, also known as the Median.

Answer:

$22.50 I think I'm not 100% sure, Im sorry

Step-by-step explanation:

90/4 is 22.5 a year

Answer:

13m-3+8m

Step-by-step explanation:

Answer:

280.8 and the formula is Base x Height = ? x.5

Step-by-step explanation:

(31.2 x 18) x 0.5 =280.8

Answer:

Step-by-step explanation:

volume = [tex]\frac{4}{3}*pi*r^3[/tex]

= 4/3pi

pi is 3.15 so I think its pi time radius to get the area which is 3.15 times 9. that equals to 28.35

Answer:

B.)- Cosine is negative in the second quadrant and positive in the fourth quadrant.  

Step-by-step explanation:

Answer:

B.) Cosine is negative in the second quadrant and positive in the fourth quadrant. i just took the quiz

Step-by-step explanation:

I hope this helped ;)

Answer:

Probability of rolling number 3 = [tex]\frac{1}{6}[/tex]

Step-by-step explanation:

Lin has a die with 6 sides.

Each side of the die is labeled with 1, 2, 3, 4, 5 and 6.

Since, probability of rolling any number = [tex]\frac{\text{Favorable event}}{\text{Total number of events}}[/tex]

Therefore, probability of rolling number 3 = [tex]\frac{\text{Favorable event}}{\text{Total number of events}}[/tex]

Favorable event of getting 3 in single roll = 1

Total events that can happen in one roll = 6

Therefore, probability of rolling number 3 = [tex]\frac{1}{6}[/tex]

Answer:

How to Cube A Number

To cube a number, just use it in a multiplication 3 times .

A cube root goes the other direction:

3 cubed is 27, so the cube root of 27 is 3

Answer:

132

Step-by-step explanation:

I'm assuming the six is not supposed to be there so here's what I did:

M - 23 = 109                    - all you need to do is add 23 to both sides

M = 132                            - doing this cancels out the -23 on the left

Answer:

3.05

Step-by-step explanation:

Answer:

3 3/4 inches

Step-by-step explanation:

Answer and Step-by-step explanation:

To find the range, we must plug in the values 0 to 15 into the function to find the values of f(x), which are the range.

When plugging in the values, we see that the answer should be the last one.

We start with a pay of $15.50, and it increases each time by $10, until it reaches $165.50.

So, D is the answer.

#teamtrees #PAW (Plant And Water)

Answer:

The circumference of a circle =πd = π×18 =18π m

The diameter of a circle is 18 m. Find its circumference in terms of π.

Diameter of a circle = 18 m. (Given)

Radius (r) of a circle = 18/2 = 9 m.

We know,

[tex] \dag [/tex] Circumference of a circle is 2πr.

So, It's circumference is (2 × π × 9) m.

It's circumference is 18π m.

Answer:

g(-1)=4 ,f(g(-1))=18

Step-by-step explanation:

g(-1):

1-3(-1)=4

f(g(-1)):

sub in g(-1) as x

(4)^2+2=18

Answer:

D) 159°

Step-by-step explanation:

[tex]10x+9+90+34+6x-13=360[/tex]

→[tex]16x=240[/tex] →[tex]x=15[/tex]

∠[tex]YZU=10*15+9=159[/tex]

[tex]---------[/tex]

hope it helps...

have a great day!!

Answer:

159°

Step-by-step explanation:

A circle measures 360°. We can use this knowledge to find the unknown angles.

(10x + 9) + (6x - 13) + 34 + 90 = 360

Combine like terms and solve for x.

16x + 120 = 360

16x = 240

x = 15

So, we have found the value of x, and can now find m∠YZU.

10(15) + 9 = m∠YZU

m∠YZU = 159°

We can ascertain that this is the answer by plugging in x for the initial equation we created.

(10(15) + 9) + (6(15) - 13) + 34 + 90 = 360

159 + 77 + 34 + 90 = 360 It works!

Answer:

i would guess

Step-by-step explanation:

Answer:

the answer is 2x²-10x+8

The trinomial equation is A = 2x² - 10x + 8

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

A = ( x - 1 ) ( 2x - 8 )   be equation (1)

On simplifying the equation , we get

A = x ( 2x - 8 ) - 1 ( 2x - 8 )

A = x ( 2x ) - x ( 8 ) - 2x + 8

On further simplification , we get

A = 2x² - 8x - 2x + 8

A = 2x² - 10x + 8

Therefore , the value of A is 2x² - 10x + 8

Hence , the equation is A = 2x² - 10x + 8

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ2

Answer:

b=50 central angle equal to the arc

Answer:

B. 22 in ?

Step-by-step explanation:

circumference of the circle: 2πr

2 × π × 11 = 22π in

Answer:

The statement that gives the best conclusion that should be made based on the results and provides the best explanation for the conclusion is option D;

D. It is reasonable to conclude that the difference in sales was caused by the different cover designs because the cover designs were randomly assigned to stores

Step-by-step explanation:

The data given in the question are presented as follows;

The particulars the CD manufacturer wants to determine = The CD cover design that will generate more sales

The mode of selection of the stores for the test = Random selection

The number of stores in each group of stores, n = 35 stores

The number of sets of stores tested = 2 sets of stores

Let [tex]\overline x_1[/tex] represent the mean number CDs sold at one set of stores and [tex]\overline x_2[/tex] represent the mean number CDs sold at the other set of stores

The null hypothesis, H₀; [tex]\overline x_1[/tex] = [tex]\overline x_2[/tex]

The alternative hypothesis, H₀; [tex]\overline x_1[/tex] ≠ [tex]\overline x_2[/tex]

Given that the statistical analysis shows that the difference in mean between the two sets of randomly selected stores is significant, we therefore should reject the null hypothesis and accept the alternative hypothesis that there is a significant difference in CD sale attributable to the difference in cover design as the CDs having on of two cover design where assigned randomly to the stores.

Answer:

10.5

Step-by-step explanation:

Answer:

The answer is C, 48

Step-by-step explanation:

Its the only answer that makes sense

Answer:

75

Step-by-step explanation:

1. Eliminate wrong answers

a. (boys 5 & girls 4) meaning the boys should have a higher number than girls (which is 60) this meaning that 48 and 61 can not be the correct answer.

5/4=x/60

x=(5/4)*60

x=75

Math rocks

Leaving it to the obvious chose(The answer is 75)

Hope this helps