In a survey of 12 people, it was found that an average of $36 was spent on their child's last birthday gift with a standard deviation of $11. Estimate the mean amount people spend on their child's last birthday gift with 80% confidence using the appropriate critical value to three decimal places. Enter your answer as equations or as numbers rounded to four decimal places.

Answer:

mAB=130°

Step-by-step explanation:

The tangent-chord theorem tells us that the angle the tangent makes with the curve (65°) is half the measure of the arc (mAB):

mAB=2(65)=130°

The value of measure of arc AB is,

⇒ m AB = 130°

An angle is a combination of two rays (half-lines) with a common endpoint. The latter is known as the vertex of the angle and the rays as the sides, sometimes as the legs and sometimes the arms of the angle.

Given that;

Line t is tangent to the circle.

Now, We know that;

The tangent-chord theorem tells us that the angle the tangent makes with the curve is half the measure of the arc.

Hence, We can formulate;

⇒ m AB = 2 × 65°

              = 130°

Thus, The value of measure of arc AB is,

⇒ m AB = 130°

Learn more about the angle visit:;

https://brainly.com/question/25716982

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Answer:

a) A = p(1 + r)^t

b) A = 500(1 + 0.07)^2=572.45

Step-by-step explanation:

t=2 in b)

Answer:

35

Step-by-step explanation:

its the 4th step your welcome

20-25-30-35

56-49-42-35

Answer: 35 I got it correct on the quiz

Step-by-step explanation:

1: F is equal to (7,-5) and 2 is equal to K and 3 is equal to B and 4 is equal to B

Answer:

Option 4

Step-by-step explanation:

Area of shaded region = Area of the circle - Area of the shaded triangles

Area of the circle = πr²

r = Radius of the circle

Therefore, area of the circle = π(4)²

                                               = 16π

Area of the given triangles = [tex]2[\frac{1}{2}(\text{Base})(\text{Height})][/tex]

                                             = Base × Height

                                             = (4 × 4)

                                             = 16

Area of the shaded region = 16π - 16

Option 4 will be the correct option.

Answer:

Its either L or N im not sure but if i had to guess out of the two i think its L.

Step-by-step explanation:

Answer:

14a   -2

Step-by-step explanation:

3(4a + 6) + 2(a – 10)

Distribute

12a+18   +2a -20

Combine like terms

12a+2a   +18 -20

14a   -2

Answer:

14a-2

Step-by-step explanation:

12a+18+2a-20

Answer:

43.75 ft²

Step-by-step explanation:

[tex]s_l[/tex] = (l√(w/2)² + h²) + (w√(l/2)² + h²)

l & w become 3.5, and h becomes 6.

[tex]s_l[/tex] = (3.5√(3.5/2)² + 6²) + (3.5√(3.5/2)² + 6²)

Step 1:Because this is a square pyramid, what you see above essentially becomes what you see below.

[tex]s_l[/tex] = 2(3.5√(3.5/2)² + 6²)

Step 2: Divide 3.5 by 2 to get 1.75.

[tex]s_l[/tex] = 2(3.5√1.75² + 6²)

Step 3: Square both 1.75 and 6 to get 3.0625 and 36 respectively.

[tex]s_l[/tex] = 2(3.5√3.0625 + 36)

Step 4: Add 3.0625 and 36 to get 39.0625.

[tex]s_l[/tex] = 2(3.5√39.0625)

Step 5: The square root of 39.0625 is 6.25.

[tex]s_l[/tex] = 2(3.5 * 6.25)

Step 6: Multiply 3.5 by 6.25 to get 21.875.

[tex]s_l[/tex] = 2(21.875)

Step 7: Multiply 2 by 21.875 to get 43.75.

[tex]s_l[/tex] = 43.75 ft²

The lateral area of this pyramid is 43.75 ft².

Answer:

zxcfghg

Step-by-step explanation:

xsdfghj

Answer:

-32

Explanation:

32/ -4 = -8

3 - -1 = 3+1 = 4

-8x4 = -32

Answer:

square root of 113 or 10.6

Step-by-step explanation:

7^2+ 8^2= C

49+64=C

113=C

square root of 113 OR 10.6

Hope this helped :)

Answer:

The answer is: 10.63

Step-by-step explanation:

7^2+8^2=c^2

113=c^2

sqrt113

10.63

can i get brainliest

9514 1404 393

Answer:

  13%

Step-by-step explanation:

The probability is the product of the individual probabilities.

  p(baking | rainy weekend) = 0.90

  p(rainy weekend) = p(rain | weekend) × p(weekend) = 0.50×0.29 = 0.145

Then ...

  p(baking) = p(baking | rainy weekend) × p(rainy weekend) =

  0.90 × 0.145 = 0.1305 ≈ 13%

Answer:

0.60

Step-by-step explanation:

Answer:

.60

Step-by-step explanation:

Answer:

The correct options are:

A, B, and E.

Step-by-step explanation:

A mathematical sentence (or a mathematical statement) is a sentence that can be true or false.

This is the only criteria we need to check, now let's analyze each option.

A: 4 - d = 12

This can be true or false, for example, if d = 0 the sentence is false because:

4 - 0 = 12

4 = 12 is false.

and if d = -8 the sentence is true, because:

4 - (-8) = 12

4 + 8 = 12

12 = 12

is true.

B: 4 - V > 2

This sentence can be true or false, same reasoning as before, we can find values of V such that this is true or false.

C: 3 + 2

Now, here we can't say if this is true or false, so this is not a mathematical sentence.

D: 59

Same as before, this is just a number.

E: 6 + a = 13

This can be true or false, depending on the value of a, then this is a mathematical sentence.

F: 12*x

Here we can not say if this is true or false, so this is not a mathematical sentence.

The correct options are:

A, B, and E.

Answer:

you have to give is more than that

Step-by-step explanation:

mb 27

Answer:

the length of BE is 27 units

Step-by-step explanation:

Answer. False... All rectangles are parallelograms.

I hope this helps! I would really appreciate it if you would please mark me brainliest! Have a blessed day!

Answer: False

Step-by-step explanation:

Parallelogram does not include some of rectangle's property

If you need a more graphical explanation, refer to the attachment below.

Answer:

5/12 pounds of chocolate

Step-by-step explanation:

converting 5/6 to 10/12, half of that is is 5/12. hope this helps !!! :D

Answer: 5/12 or about 0.42

Step-by-step explanation:

You are looking for 1/2 of 5/6

5/6 times 1/2 = 5/12

I hope it helps!

Answer: 5 and 27 as remainder

Step-by-step explanation:

Answer:

B (range)

Step-by-step explanation:

The IQR would actually increase, because the Q1, Q2, and Q3 would get most likely larger. (Or possibly stay the same).

The median would most likely increase, possibly stay the same.

The maximu would stay the same.

The range would decrease, because right now it’s 13, so without the outlier, the minimum value would be closer to the rest of the data.

Answer:22

Step-by-step explanation:

Add

Multiply

Divide

Answer: The required z-score = 1.25

Step-by-step explanation:

Let x be a random variable that denotes the scores in the exam.

The formula for z-score = [tex]\dfrac{X-\text{mean}}{\text{standard deviation}}[/tex]

As per given, we have

X= 625, mean=500, standard deviation = 100

Z-score = [tex]\dfrac{625-500}{100}[/tex]

i.e. Z-score = [tex]\dfrac{125}{100}[/tex]

i.e. Z-score =1.25

Hence, the required z-score = 1.25

Answer:

BLM

Step-by-step explanation:

Answer: =2/15

Step-by-step explanation: Hope this help :D

Answer:

2/15

Step-by-step explanation:

4/5 - 2/3

Step 1: Find a common denominator. 5 and 3 don't share any factors other than 1, so multiply them to get 15.

12/15 - 10/15

(12 - 10)/15

Step 2: Subtract 10 from 12 to get 2.

2/15

4/5 - 2/3 simplified is 2/15.

9514 1404 393

Answer:

  A) $157,555

Step-by-step explanation:

The sum of assets is ...

  house + 2 cars = $280,000 +5,200 +15,600 = $300,800

The sum of liabilities is ...

  mortgage +car loan +credit card +wedding

  = $113,545 +9,200 +2,300 +18,200 = $143,245

The family's net worth is the difference between assets and liabilities:

  $300,800 -143,245 = $157,555

Answer:17

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

4x+30=9x-5

35=5x

x=7

Answer:

matt=26 brown=11

Step-by-step explanation:

use ur brain and do it backwards or look at the guy above me

Answer:

the ration of 3:5. 5 x 4 gives you 20 so, 3x4 gives you 12.

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation: