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Pachacha [2.7K]
3 years ago
15

Example 5: Writing and Solving an Equation

Mathematics
1 answer:
telo118 [61]3 years ago
5 0

Step-by-step explanation:

radius =x+2

diameter=4x

Diameter=2(radius)

4x=2(x+2)

4x=2x+4

4x-2x=4

2x=4

x=4/2

x=2

Subtitute x=2 in radius:

r=2+2=4

<u>A</u><u>r</u><u>e</u><u>a</u><u>=</u><u>π</u><u>r</u><u>²</u>

Area=3.14×4²

Area=3.14×16

Area=50.24

<u>Both the circles are identical so area is same.</u>

<u>Note</u><u>:</u><u>if</u><u> </u><u>you</u><u> </u><u>need</u><u> </u><u>to</u><u> </u><u>ask</u><u> </u><u>any</u><u> </u><u>question</u><u> </u><u>please</u><u> </u><u>let</u><u> </u><u>me</u><u> </u><u>know</u><u>.</u>

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What numbers multiply to equal -9 but add up to 12?
Elan Coil [88]
I don't think this is possible.

The factors of -9 are:
-1 x 9
-9 x 1
-3 x 3

And when you add them together you get:
-1 + 9 = 8
-9 + 1 = -8
-3 + 3 = 0

Sorry but there is not an answer. :(

7 0
3 years ago
What is f(4y)?? with f(x)=-2x-3
Olin [163]

Good evening ,

______

Answer:

f(4y) = -8y - 3.

___________________

Step-by-step explanation:

f(x) = -2x-3 Then f(4y) = -2(4y) -3 = -8y - 3.

:)

7 0
4 years ago
(1.02)
AVprozaik [17]

Answer:

-14

Step-by-step explanation:

3r2-5s+6t

3.2.2-5(-4)+6.(-1)

12-20-6

12-26

-14

7 0
3 years ago
Read 2 more answers
Estimate the probability of each event occurring. Write the probability as a fraction, as a decimal, and as a,percent.1- One of
Marianna [84]

Answer:

1/1, 1.0, 100%

Step-by-step explanation:

There are only seven days in a week, so no matter which day you start on, the next seven days will always include a Friday.

4 0
3 years ago
weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probabi
kenny6666 [7]

Answer:

0.34134

Step-by-step explanation:

In other to solve for this question, we would be using the z score formula

z = (x - μ) / σ

x = raw score

μ = mean

σ = Standard deviation

We are told in the question to find the probability that a worker selected at random makes between $350 and $400

let x1 = 350 and x2= 400 with the mean μ = 400 and standard deviation σ = $50.

z1 = (x1 - μ) / σ = (350-400) / 50 = -1

z2 = (x2 - μ) / σ = (400 - 400) / 50 = (0/50) = 0

From tables, P(z <= -1) = 0.15866

P(z <= 0) = 0.5

Then, the probability would give us, P(-1 ≤ z ≤ 0) =0.5 - 0.15866 =

0.34134

Hence, The probability that a worker selected at random makes between $350 and $400 = 0.34134

7 0
4 years ago
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