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Answers:

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Explanation:

The point estimate is the midpoint of the two ends. We add up the endpoints and divide by 2 to get the midpoint. We have p = 0.43 and q = 0.55, so we get the midpoint (p+q)/2 = (0.43+0.55)/2 = 0.98/2 = 0.49, then this converts to 49%. Meaning 49% is exactly at the midway point of 43% and 55%

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The margin of error is the distance from the midpoint to either endpoint. If we try to aim for 49%, but have some error, then we have an error of 55-49 = 6%, or we could say 49-43 = 6%; either way the margin of error is 6 percentage points.

The formula we can use is (q-p)/2 where p and q are the left and right endpoints of the interval. So in this case, we'd have,

(q-p)/2 = (0.55-0.43)/2 = 0.12/2 = 0.06 = 6% margin of error

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Side note: We can think of it as if 49 is the center and 6 is the radius of the circle. We want to hit the center of the circle, but we have an error of 6 (meaning that's how far we could go in either direction).

Answer:

125

Step-by-step explanation:

5 to the third power is 125

Answer:

Each cupcake cost $2.50 and each brownie cost $2.00

Step-by-step explanation:

Let x represent the price of each cupcake and let y represent the price of each brownie.

Lily and Maddie bought one cupcake and one brownie for $4.50. Hence the equation is:

x + y = 4.50                (1)

Also Jessica purchased 3 cupcakes and one brownie for $9.50. Hence the equation is given by:

3x + y = 9.50              (2)

To find the price of each cupcake and brownie, we solve equation 1 and 2 simultaneously. To find x, subtract equation 1 from equation 2:

2x = 5

x = $2.50

Put x = $2.50 in equation (1):

2.50 + y = 4.50

y = $2.00

Therefore each cupcake cost $2.50 and each brownie cost $2.00

Answer:

Step-by-step explanation:

Answer:

C. 70

Step-by-step explanation:

Step-by-step explanation:

● 5(x+9)

● 5 (5)

● 5×9=45

● 5×5=25

● 45+25=70

Answer:

2/11

Step-by-step explanation:

There are 11 tiles and 2 of the have R's on them, so it is 2 out of 11, or 2/11

Answer:4

Step-by-step explanation:

1/2 cups equal 120 ml

so we have 500 ml and in order to find how many 1/2 cup can you find 500ml

ans = 500/120 = 4.16666666667 now we will try to convert it into a whole number which equal to four (4)

Answer:

35

Step-by-step explanation:

sdfghjkolkgdsdfghjkl

The possible number of the group the movies will be 840.

Permutation and combination are counting principles that are used in a variety of situations. A permutation is a count of the various arrangements that can be made from a given set of items. Details matter in permutation because the order or sequence is important.

Given that there are 7 movies that Christine wants to see over winter break. She only has time to see 4 of the movies.

The combinations will be calculated as:-

Combination = ⁷C₄

Combination = ( 7 x 6 x 5 x 4 )

Combination = 840

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Step-by-step explanation:

would you still like me to help you with this question

Angle of depression of the slope is 24. degree.

Angle of depression is equal to the angle of elevation.

sine = the vertical drop/ the ski slope

sine = 100/250

      = 2/5 = 0.4.

sine - 1 (0.4) = 23.57 which is about 24 degree.

Therefore, the correct angle of depression of the slope is approximately 24 degree.

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Answer:

[tex]perimeter = 15 + 7 + 8 + (12 - 8) + (15 - 8) + 12 \\ = 53 \: mm[/tex]

The perimeter of the figure is 70 mm.

Option B is the correct answer.

A rectangle is a 2-D shape with length and width.

The length and width are different.

If the length and width are not different then it is a square.

The area of a rectangle is given as:

Area = Length x width

We have,

The figure has two rectangles.

Bigger rectangle.

Length = 15 mm

Width = 12 mm

Smaller rectangle.

Length = 8 mm

Width =  (12 - 7) mm = 5 mm

Now,

The perimeter of the figure.

= 12 + 15 + 7 + 8 + 5 +  (15 + 8)

= 12 + 15 + 7 + 8 + 5 + 23

= 70 mm

Thus,

The perimeter of the figure is 70 mm.

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Answer:

the correct answer is c

Step-by-step explanation:

the correct answer is c

Answer:  x ≥ 4.50

Because the cost is at least $4.50 per pound

Answer:

y =  3x + 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (2, 10 )

m = [tex]\frac{10-4}{2-0}[/tex] = [tex]\frac{6}{2}[/tex] = 3

The y- intercept c = 4

y = 3x + 4 ← equation of line

Answer:

4th option

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x + 4)² + (y + 5)² = 64 ← is in standard form

with h = - 4, k = - 5 and r = [tex]\sqrt{64}[/tex] = 8

centre = (- 4, - 5) and r = 8

Answer:

2.9 cm³

Step-by-step explanation:

Note: For the copper and the lead to balance, they must have thesame mass.

Applying,

D' = m'/V.................... Equation 1

Where D' = density of the lead, m' = mass of the lead, V = Volume of the lead.

make m' the subject of the equation

m' = D'V................ Equation 2

From the question,

Given: D' = 11.4 g/cm³, V = 2.28 cm³

Substitute these values into equation 2

m' = (11.4×2.28)

m' = 25.992 g

Similarly,

for copper,

D = m/V............... Equation 3

Where D = density of  copper, m = mass of copper, V = volume of copper.

make V the subject of the equation

V = m/D.............. Equation 4

where, m = m' = 25.992 g

Given: D = 8.96 g/cm³

Substitute these values into equation 4

V = 25.992/8.96

V = 2.9 cm³

Answer:

x = 2

Step-by-step explanation:

The "axis of symmetry" of a quadratic graph is the vertical line through the vertex.  Identifying the vertex in the given diagram as (2, 6), we can immediately write the axis of symmetry as x = 2.

Answer:

9 ÷ 2

Step-by-step explanation:

or draw that small house thing over the 9 an place 2 to the left of it.

Answer:

The circle is centered at (9, -8) and diameter 8.

Step-by-step explanation:

(x-h)^2 +(y-k)^2 =r^2

(x-9)^2+(y+8)^2=4^2

Center: (h,k) = (9,-8)

Radius: r=4

The circle is centered at (9, -8) and radius is 4 or diameter 8.

Answer:

The answer is C

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

7

Answer:

83.61

Step-by-step explanation:

90 decreased by 7.1% = 83.61

Mark my answer as brainliest please.

Answer:

answer =83.61

Step-by-step explanation:

90( 1 - 7.1 / 100 )

lets break it down

step 1: 7.1 / 100 = 0.071

step 2: 1 - 0.071 = 0.929

step 3: 90 x 0.929 = 83.61

final answer = 83.61

Answer:

V = 5cm * 2 cm * 8 cm

Step-by-step explanation:

Volume is the length times the width times the height

V = l*w*h

V = 5cm * 2 cm * 8 cm

Answer: the y-intercept is 1/2

Answer:

3x-2y

Step-by-step explanation:

2y must be subracted

Step-by-step explanation:

4) lower, greater

5) The precision of the instrument would be 0.1 cm

Answer:

c

all the other numbers are too high

Answer:

A

Step-by-step explanation:

cuz  im smart

Answer:

2/3 and 8/12

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

480 inches cubed

Step-by-step explanation: