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2 years ago

Find the circumference and the area of a circle with diameter 7 cm.

Mathematics

1 answer:

Ilia_Sergeevich [38]2 years ago

3 0

Answer:

21.98 is the circumference because is it 7 pi 7 times 3.14. For the area though it is 38.48 because you need to get the radius of the circle and you divided 7 by 2 which is 3.5 and here is the work A=πr2=π·3.52≈38.48451

Step-by-step explanation:

Hope this helped and you understood if you want it would help a lot if you put it brainliest.

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Solve (X + 6)(x - 4) = -16 O {-4, 6) O {-4, 2] O (-12, 22)

masya89 [10]

Answer:

x=2 or x=−4

Step-by-step explanation:

Let's solve your equation step-by-step.

(x+6)(x−4)=−16

Step 1: Simplify both sides of the equation.

x2+2x−24=−16

Step 2: Subtract -16 from both sides.

x2+2x−24−(−16)=−16−(−16)

x2+2x−8=0

Step 3: Factor left side of equation.

(x−2)(x+4)=0

Step 4: Set factors equal to 0.

x−2=0 or x+4=0

x=2 or x=−4

6 0

3 years ago

Name the points which satisfy the conditions. The ordinate is zero.

sveticcg [70]

9514 1404 393

Answer:

Step-by-step explanation:

The one point with a y-value of 0 is the one on the x-axis: G.

4 0

2 years ago

Which label on the cone below represents the center of the base? D B Ο Α OB

Firlakuza [10]

Answer:

Step-by-step explanation:

The center of the base is the center of the circle

The center of the circle is C

8 0

2 years ago

Find the value of x that makes m ∥ n .

Alla [95]

Answer:

Step-by-step explanation:

(2x+15)=135 They're corresponding angles so they equal/congruent

-15 -15 Subtract 15 on both sides since you're looking for x

2x = 120 Bring down the remains and subtract 135 from 15

2 2 Add 2 on both sides

x= 60 Divide.

3 0

2 years ago

The cost C (in dollars) of producing x DVD players is represented by C = 4.5x2. How many DVD players are produced if the cost is

lisabon 2012 [21]

Given the following equation representing the cost of producing DVD Players:

$\text{ C = 4.5x}^2$

Let's determine the number of DVD players produced if the cost is $544.50

$\text{ C = 4.5x}^2$ $\text{ \$544.50 = 4.5x}^2$ $\text{ }\frac{\text{\$544.50}}{\text{ 4.5}}\text{ = }\frac{\text{4.5x}^2}{\text{ 4.5}}$ $\text{ 121 = x}^2$ $\text{ }\sqrt{\text{121}}\text{ = }\sqrt{\text{x}^2}$ $\text{ 11 = x}$

Therefore, it'll cost $544.50 to produce 11 DVD Players.

The answer is 11.

3 0

1 year ago