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vagabundo [1.1K]
3 years ago
12

??? Homework need answer

Mathematics
1 answer:
kolezko [41]3 years ago
3 0

Answer:

40

Step-by-step explanation:

i minus

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Is sarah faster than Katie? and what is the average rate?​
slamgirl [31]

Step-by-step explanation:

here's the solution: -

Average time taken by sarah :

=》

\frac{79 + 70 + 68 + 75 + 69 + 64 + 69 + 75 + 64 + 76}{10}

=》

\frac{709}{10}

=》

70.9

average time taken by sarah = 70.9 seconds

now,

average time taken by katie :

=》

\frac{ 79 + 79 + 76 + 81 + 89 + 76 + 64 + 85 + 82 + 78}{10}

=》

\frac{789}{10}

=》

78.9

average time taken by katie = 78.9 seconds

so, sarah is more efficient (faster) than katie.

i agree with sarah.

cuz, she took less time than katie.

7 0
3 years ago
Read 2 more answers
It's raining outside, and after 1 hour of rain, the water level in Jake's pond is 2 meters. After 3 hours, the water level is 2.
alexira [117]

Answer: 0.4 meters per hour.

Step-by-step explanation:

The rate of change of distance with respect to time is known as speed.

Formula :\text{Rate of change}=\dfrac{\text{Change in position}}{\text{Change in time}}

Given : It's raining outside, and after 1 hour of rain, the water level in Jake's pond is 2 meters. After 3 hours, the water level is 2.8 meters.

i.e. Change in position= 2.8-2=0.8 meters

Change in time = 3-1=2 hours

i.e. \text{Rate of change}=\dfrac{0.8}{2}=0.4

Hence, the rate of change =0.4 meters per hour.

4 0
3 years ago
Read 2 more answers
There are______<br>Pairs of integers satisfying a÷b = -2​
aleksandr82 [10.1K]

Answer:

There are only 1  

Pairs of integers satisfying a÷b = -2​

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Whats the awnser to this question
horsena [70]
The sum of the angles of a triangle is 180º.
We have three angles:
∠yxz=3x+5
∠xzy=180º-(8x-14)
∠xyz=4x

Therefore:
(3x+5º) + [180º-(8x-14º)]+(4x)=180º
3x-8x+4x=180º-5º-14º-180º
-x=-19º
x=19º

∠yxz=3x+5º =3(19º)+5º=62º
∠xzy=180º-(8x-14)=180º-(8(19º)-14)=42º
∠xyz=4x=4(19º)=76º

Answer:  m∠yxz= 62º.
8 0
3 years ago
CAN AN EXPERT&lt; ACE&lt; MODERATOR OR GENIUS HELPP ME WITT THIS PLSSSSSSSSSSSSSS!!!!!!!!!!!!!!!!!!!!!!!!
RideAnS [48]

Answer: HI ^_^

your answer will be D. (2x+3)(4x^2-6x+9)

Step-by-step explanation:

hope it helps

have a nice day !!

3 0
3 years ago
Read 2 more answers
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