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katovenus [111]
3 years ago
13

The diameter of circles is 4 cm. ​

Mathematics
1 answer:
krok68 [10]3 years ago
8 0

Answer:

Step-by-step explanation:

C=pi d, here d=4 so

C=pi X 4

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The expression 2x + 50 represents the elevation above sea level, in meters, of a rock climber after x minutes of climbing. What
vova2212 [387]
We let y equal to the elevation above sea level so that the elevation of the rock climber after x minutes of climbing would be:

y = 2x + 50

His initial height can be calculated when x is equal to zero it is when the climber is not yet climbing. Therefore, the rock climber'sinitial height above sea level would be 50 meters.
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Thomas received a $50 gift card for an online store, and he wants to buy LED lights to decorate his bedroom. If one strand
olga nikolaevna [1]

Answer:

Thomas can buy 4 strands.

Step-by-step explanation:

We need to round $11.86 to the nearest dollar, which is $12.

Now we ask ourselves, "how many times does 12 go into 50 without going over?"

12 × 4 = 48

12 can go into 50 4 times.

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3 years ago
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Find range ,median mode and mean of the following numbers -19,-11,-19,-18,-13,-19,-18,-11.0, 11,12
IrinaK [193]
Range= 31 because 12- -19 = 31 you subtract the lowest with the highest.

Mean= 8.3

Mode = -19 because you mostly see -19 there’s 3 -19 . :)))
8 0
2 years ago
The receipt shows the prices of goods that Robert bought at the store.
Vladimir79 [104]

Answer:

4%

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5 0
3 years ago
Which of these equations have no solution? check all that apply
finlep [7]

Answer:

A, B, and E

Step-by-step explanation:

Let's look through each of the answer choices.

A) 2(x + 2) + 2 = 2(x + 3) + 1

Simplify this by expanding out the parentheses:

2x + 2 * 2 + 2 = 2x + 2 * 3 + 1

2x + 4 + 2 = 2x + 6 + 1

2x + 6 = 2x + 7

6 = 7

Well, we know that 6 is NOT equal to 7, so this has no solutions.

B) 2x + 3(x + 5) = 5(x – 3)

Simplify this by expanding out the parentheses:

2x + 3x + 3 * 5 = 5x - 5 * 3

5x + 15 = 5x - 15

15 = -15

Again, we know that 15 is NOT equal to -15, so this also has no solutions.

C) 4(x + 3) = x + 12

Simplify this by expanding out the parentheses:

4x + 4 * 3 = x + 12

4x + 12 = x + 12

3x = 0

x = 0

This actually does have a solution when x = 0, so eliminate this.

D) 4 – (2x + 5) = (–4x – 2)

Simplify this by expanding out the parentheses:

4 - 2x - 5 = -4 - 2

-2x - 1 = -6

-2x = -5

x = 2.5

This also has a solution when x = 2.5, so eliminate this.

E) 5(x + 4) – x = 4(x + 5) – 1

Simplify this by expanding out the parentheses:

5x + 5 * 4 - x = 4x + 4 * 5 - 1

4x + 20 = 4x + 19

20 = 19

Here, we know that 20 is NOT equal to 19, so this has no solution.

Hope this helps!

8 0
3 years ago
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