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Sladkaya [172]
3 years ago
12

Does anyone know a website to answer my questions

Mathematics
2 answers:
Stels [109]3 years ago
7 0
Sladar or this one right here :) or mathchat and gotit
cricket20 [7]3 years ago
5 0
Isn't this a pretty good website to answer homework questions?
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Someone help and plz make sure it’s right
Archy [21]
The answer is b because 80+60=140, -7 and then divide by three you get 11
7 0
3 years ago
Read 2 more answers
In a class of 40 28 passed their maths test what fraction of the class passed
photoshop1234 [79]

Answer:

Unsimplified: 28/40 people passed

Simplified: 7/10 people passed

Step-by-step explanation:

28/40 passed now we simplify it, divide both sides by two

28/4=7

40/4=10

7/10

6 0
4 years ago
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BRAINLY!!!- if a=7, b=8, and c=9.2 is this a right triangle? why?
Travka [436]

Answer:

no

Step-by-step explanation:

If this were a right triangle we would assume the Pythagorean Theorem to prove it

a^{2} +b^{2} =c^{2}

7^{2} +8^{2} =9.2^{2}

this gives us

49+64=84.64

this is 143=84.64 and therefore not equal and not a right triangle

7 0
3 years ago
HELP ASAP will give brainliest
Natalka [10]

Average rate of change is 0

Interpretation: The crop yield did not change from year 5 to year 15

<em><u>Solution:</u></em>

The function that models the yield is:

f(x) = -x^2 + 20x + 75

The average rate of change of f(x) from x = a to x = b is given by the formula:

\text{ average rate of change }=\frac{f(b)-f(a)}{b-a}

Find and interpret the average rate of change from year 5 to year 15

f(5) = -(5)^2 + 20(5) + 75\\\\f(5) = -25 + 100 + 75\\\\f(5) = 150

f(15) = - (15)^2 + 20(15) + 75\\\\f(15) = -225 + 300 + 75\\\\f(15) = 150

<em><u>Thus average rate of change:</u></em>

\text {average rate of change}=\frac{f(15)-f(5)}{15-5}

\text {average rate of change}=\frac{150-150}{10}=0

Thus Average rate of change is 0

Interpretation: The crop yield did not change from year 5 to year 15.

7 0
3 years ago
Read 2 more answers
under certain circumstances, a rumor spreads according to the where p(t) is the proportion of the population that knows the rumo
Gnesinka [82]

Answer:

p(t) = 0.8 when t = 7.38 hours

Step-by-step explanation:

3 0
3 years ago
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