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pychu [463]
3 years ago
9

I need some help with this math question

Mathematics
1 answer:
kherson [118]3 years ago
6 0
Second one :) shshdjehwjsjdjdjs
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30 points Help ASAP How do division properties help you evaluate expressions? Drag a word or number to the box to correctly comp
yKpoI14uk [10]

Answer:

Numerator , 0

Anything divided by 0 is always 0

Brainliest Pls

3 0
3 years ago
A mouse climbs up a well of 86 meters. It advances 14 meters during the night, but during the day it retreats 2. The mouse will
Deffense [45]

Step-by-step explanation:

we assume day and night are equally long.

and the mouse will start at night of day 1.

then, on day 2, it will first retreat 2 meters (during daylight) and then advance 14 meters (at night).

so, on every full day, the mouse will effectively advance 12 meters (-2 + 14 = 12).

with a starting value of 14 (the first night).

so, we are getting an arithmetic sequence

an = an-1 + c

c = 12 in our case.

a1 = 14

a2 = a1 + 12 = 14+12 = 26

a3 = a2 + 12 = a1 + 12 + 12 = 14 + 2×12 = 38

an = a1 + (n-1)×12 = 14 + 12(n-1)

at what n will it reach 86 ?

86 = 14 + 12(n-1) = 14 + 12n - 12 = 2 + 12n

84 = 12n

n = 7

so, on the 7th day the mouse will reach the surface (if we truly count the first starting night day 1 - this is up to your teacher, but I would).

7 0
2 years ago
Please answer! Explain all steps!
MatroZZZ [7]
We will be using the formulas:
speed=distance/time
time=distance/speed
distance=speed×time
First let's find out Diane's rate of swimming. We can measure this by finding the slope (y/x) of a given coordinate on the graph. One point is (10,15), so you do 15/10=1.5m/s
Now for Rick's rate of swimming, just take a pair of values from the table. 12.5/10=1.25m/s
By the way m/s is metres per second for this
So at a constant speed of 1.5m/s, Diane swam 150m in 150/1.5= 100 seconds, or 1 minute 40 seconds
And at a constant speed of 1.25m/s, Rick swam 150m in 150/1.25= 120 seconds, or 2 minutes.
So the difference between their two times is 20 seconds
7 0
3 years ago
Read 2 more answers
Help me please and thanks
yawa3891 [41]
I think it's the one u picked
7 0
3 years ago
Angle ABC measures 30 degrees. It is rotated 90 degrees to create Angle A’B’C’. What is the measure of Angle A’B’C’?
Studentka2010 [4]
A. 30 degrees

We just rotated the figure but we didn't change the angles!
8 0
3 years ago
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