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RUDIKE [14]
3 years ago
14

The expression 2x+50 represents the elevation above sea level, in meters, of a rock climber after x minutes of climbing. What is

the rock climber's
Mathematics
1 answer:
ladessa [460]3 years ago
5 0
Elevation above sea level = 2x+50
rock climbers minute of climbing = x

2x + x + 50
3x + 50
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Stacy and Travis are rock climbing. Stacy's rope is 4 feet shorter than 3 times the length of Travis' rope. Stacy's rope is 23 f
hichkok12 [17]
3x23 =69
69-4  =65

travis's rope is 65 feet long
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3 years ago
Simplify. 15 X plus 2Y plus X plus 7X plus 8Y
disa [49]

Answer:

23x+10y

Step-by-step explanation:

add all x variables and all y variables together

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I need a thorough explanation for question 4 please. It’s about Operations of Powers/Exponents.
miskamm [114]

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2 years ago
Sue either travels by bus or walks when she visits the shops. The probability that she catches the bus from the shops is 0.7. Sh
Alina [70]

Corrected Question

Sue travels by bus or walks when she visits the shops. The probability that she catches the bus to the shops is 0.4. The probability she catches the bus from the shops is 0.7. Show the probability that Sue walks at one way is 0.72

Answer:

P(A \cup B) =0.72 (Proved)

Step-by-step explanation:

Sue travels by bus or walks when she visits the shops.

Let the event that she catches the bus to the shop=A

Let the event that she catches the bus from the shop=B

P(A)=0.4

P(B)=0.7

Both A and B are independent events.

Therefore,Probability that she catches the bus to and from the shop:

P(A∩B) = 0.4 X 0.7= 0.28

Probability Sue walks at least one way P(A \cup B) = 1 - P(A \cap B)

= 1 - 0.28\\= 0.72

Hence, the probability that Sue walks at least one way is 0.72.

8 0
3 years ago
GEOMETRY- FIND POLYGON AREA
Dvinal [7]

Answer:

Step-by-step explanation:

The area of a regular polygon is

A=\frac{1}{2}ap where a is the apothem and p is the perimeter. Perimeter is simple: just count the number of sides the polygon has and multiply it by 3 (the length of one side).

p = 3(9) is 27 inches for the perimeter.

We have what we need now to find the area:

A=\frac{1}{2}(4.1)(27) and

A=\frac{1}{2}( 110.7) so

A = 55.35 square inches

5 0
2 years ago
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