1st drop down answers are
1. NOT VALID
2. VALID
2nd drop down answers are
1. BIASED
2. UNBIASED
3rd drop down answers are
1. APPROPRIATE
2. INAPPROPRIATE

Step-by-step explanation:

80° - x + 80° = 90° { being complementary angles }

160° - x = 90°

x = 180° - 90°

x = 70°

Answer:

x = 65

Step-by-step explanation:

To solve the equation, we write it in radical form:

[tex]5\, \sqrt[3]{x-1} = 20[/tex]

Then, we divide both sides by 5 to isolate the root:

[tex]\sqrt[3]{x-1} = \frac{20}{5} \\\sqrt[3]{x-1} =4[/tex]

and next, we raise both sides of the equation to the power 3 so as to free the expression in x from the root:

[tex]x-1=4^3\\x-1=64[/tex]

now we add 1 to both sides to isolate x:

x = 65

Answer:

The distance between the points

d = LM = 10.24

Step-by-step explanation:

Step(i):-

Given that the points are L ( 7,-1) and M (-2,4)

The distance formula

  LM = [tex]\sqrt{(x_{2} -x_{1})^{2} +(y_{2} -y_{1} )^{2} }[/tex]

Step(ii):-

[tex]LM= \sqrt{(-2-7)^{2} +(4-(-1) )^{2} }[/tex]

LM = [tex]\sqrt{(-9)^{2} +(5)^{2} }[/tex]

LM = √106

LM = 10.29

The distance between the points

d = LM = 10.24

Answer:

the common demonator is 8.

Step-by-step explanation:

Answer:

The length of QR to the nearest tenth of a foot is 287.28 feet.

Step-by-step explanation:

Let a right angled Triangle QRS have base SQ, perpendicular RS and Hypotenuse QR.

∠S = 90°

∠Q = 17°

Perpendicular = 84 ft

We know that for a right angle triangle

SinΘ = perpendicular/Hypotenuse

Sin ∠Q = 84/QR

QR = 84/sin(17°)

QR = 84/0.2924

QR = 287.2777

QR = 287.28 feet

The cosine rule is used to determine the length of side q. Then the length of side q is 5.34 inches.

Trigonometry deals with the relationship between the sides and angles of a triangle.

In ΔQRS, r = 5.1 inches, s = 2.4 inches and ∠Q=26°.

Then the length of q will be given by the cosine rule.

[tex]\rm q = \sqrt{r^2 + s^2 - 2rs \cos Q}\\\\q = \sqrt{5.1^2 + 2.4^2 - 2 \times 5.1 \times 2.4 \cos 26^o}\\\\q = \sqrt{26.01 + 5.76 - 24.48 \times 0.89879}\\\\q = \sqrt{50.49 - 22}\\\\q = \sqrt{28.49}\\\\q = 5.34 \ inches[/tex]

The length of the q is 5.34 inches.

More about the trigonometry link is given below.

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Answer:

3.51% probability that this fund-raising event is a success

Step-by-step explanation:

In a set with mean  and standard deviation , the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Answer:

meiko has 32 pencils

Step-by-step explanation:

8×4=32

Meiko has 32 pencils.

An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Given that, Mieko has 4 times as many pencils as Holden. Holden has 8 pencils.

Let Mieko has x pencils,

Establishing the equation,

Therefore, according to question,

x = 4 × 8

x = 32

Hence, Mieko has 32 pencils

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Answer:

The cost of one ticket would be $2.5, the equation I believe is 9x + 13.50 = 36.

Step-by-step explanation:

I hope this helps.

Answer:

there are 6 more girls than boys

Step-by-step explanation:

i hope this is right good luck!:)

Answer:

Step-by-step explanation:

1/2 = 6/12

7/12= 7/12

2/3= 8/12

3/4= 9/12

5/6 = 10/12 the next fraction

Answer:

C. 6,900 ft^2

Step-by-step explanation:

Given the following data;

Base of triangle = 120 feet.

Height = 115 feet.

To find the area of triangle;

Area of triangle = ½*base*height

Area of triangle = ½*120*115

Area of triangle = 60*115

Area of triangle = 6900ft²

Therefore, the area of the park is 6900 square feet.

Answer:

2/(3a^(1/3))

Step-by-step explanation:

The derivative of g(x) = 2/(3x^(1/3))

you get this by bringing the exponent of g(x) down and the new exponent is (2/3) - 1 .

Then replace x with a

Answer:

[tex]y =\frac{1}{2}x -4[/tex]

Step-by-step explanation:

m = (1/2)  ; (2 , -3)

y -y1 = m(x - x1)

[tex]y - [-3] = \frac{1}{2}(x - 2)\\\\y + 3 = \frac{1}{2}x - 2 *\frac{1}{2}\\\\y + 3 = \frac{1}{2}x -1\\\\y = \frac{1}{2}x - 1 - 3\\y =\frac{1}{2}x -4[/tex]

Answer:

x= (-∞,∞)

Step-by-step explanation:

x could be any value and make this equation true

Answer:

$44 per 1 meal

Step-by-step explanation:

Answer:

0.0625 Days

Step-by-step explanation:

For 1 day Erin uses 1 3/8

1 day consumption is 11/8

11/2 bags of oranges would take

11/2 divided by 11/8

Answer:

$100

Step-by-step explanation:

We know that the total cost was $110 and that the phone is $100 more than the case. With this, we can figure out how much the case is, and use that information to find the price of the phone.

Case price = total price - 100

= 110 - 100

Case price = 10

Now that we know that the case price is $10, we can figure out the phone's price.

Phone price = total price - case price

= 110 - 10

= 100

The phone costs $100

Answer:

2,400 miles

Step-by-step explanation:

Distance = Speed x Time

Distance = 600 miles / hour x 4 hours

Distance = 2,400 miles

If you are looking for speed, use distance over time and if time, distance divided by speed.

Answer:

85.8

Step-by-step explains

4596.96-4200=396.96

4511.16--4200=

396.96-311.16=85.8

so 85.8 and b

Answer:

26/2

Step-by-step explanation:

the graph would go up 45$ per hour of work if she is charging a per hour rate

Step-by-step explanation:

becouse she charges 630$ per 14 hours you would do 630÷14 which =45$

the 45 represents the hourly rate

the graph should spike every hour mark.

Answer:

Step-by-step explanation:

a). Since, 20% of the total diagram is represented by one fifth part of the total length.

Therefore, by adding all parts we will get 100% weight of the adult puppy.

20% of the part = 9 pounds

So the total weight of the adult puppy = 9 + 9 + 9 + 9 + 9

                                                         = 45 pounds

b). Weight of the puppy =  9 pounds

    Weight of a adult = 45 pounds

    Therefore, fraction that represents the weight of the puppy as compared to the weight of an adult = [tex]\frac{9}{45}[/tex]

                                         = [tex]\frac{1}{5}[/tex]

Answer:

Question 1 Answer: The adult weight will be 45 pounds.

Question 2 Answer: The puppy is ⅕ of its adult weight.

Step-by-step explanation:

Q1- Why is the answer: because there are 5 9's and 5 ⋅ 9 = 45.

Q2-why is the answer : because the whole is divided into 5 pieces of equal length.

Hope this helps!

Answer:

I dont see the question

Step-by-step explanation:

soryy

Answer:

74%->91.22

100%-> 123.27(estimated)

The total amount of the utility bill will be $123.2.

The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that on a recent utility bill, the water/sewer/garbage portion of the bill was $91.22. This consisted of 74% of the total bill.

The total amount will be calculated as below:-

74% ⇒ $91.22

1% ⇒ 91.22 / 74

100% ⇒ ( 91.22 x 100 ) / 74

100% ⇒ $123.27

Therefore, the total amount of the utility bill will be $123.2.

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Answer:

35.56 (rounded to nearest hundredth)

Step-by-step explanation:

1.8x = 64

x= 64/1.8

x = 35.56

3.865in^2

It's (the area of the square minus the area of the circle) divided by 2.

So, Area of the square is 6x6=36

Area of the circle is (pi)*(radius=3)^2=28.27

36-28.27=7.73

7.73/2=3.865in^2

Answer:

You can’t see a rainbow from the other side. There is no other side. A rainbow happens when light is reflected from water droplets. If you get to the other side of the rain and look back, you can’t see the reflection. It would be like going behind a movie projection screen. You can’t see anything from the back side.

Step-by-step explanation:

Answer:

P(A, B or C) = 6/7 or 0.8571

Step-by-step explanation:

From the image, we have the frequency for each grade as;

Grade A = 5

Grade B = 10

Grade C = 15

Grade D = 3

Grade F = 2

We want to find the probability that a student earns a grade of A, B or C.

Total frequency for A, B & C = 5 + 10 + 15 = 30

There are a total of 35 students overall for the geometry course.

Thus;

P(A, B or C) = 30/35

P(A, B or C) = 6/7 or 0.8571

Answer:

Step-by-step explanation:

Total frequency for A, B & C = 5 + 10 + 15 = 30

There are a total of 35 students overall for the geometry course.

P(A, B or C) = 30/35

P(A, B or C) = 6/7 or 0.8571

now we round to the hundredths place

0.8571 ⇒ 0.86