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pychu [463]
2 years ago
6

Peyton says the sum of two numbers can never be zero. Explain why Peyton's reasoning is incorrect. Use an example.

Mathematics
1 answer:
Elena-2011 [213]2 years ago
4 0

Answer:

Well, there can be negative numbers added to their positive opposite.

Step-by-step explanation:

For example, -3 + 3 = 0

or you could 0 + 0 = 0

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6. Alex and Brian park their bikes side-by-side. Alex leaves to visit friends, and Brian leaves 30 minutes later,
Aleksandr-060686 [28]

Answer:

See below.

Step-by-step explanation:

When Brian passes Alex they both have travelled the same distance.

Call this distance d.

Let the speed that Brian passes = x miles/hour.

Distance = speed * time  so:

For Alex:

d = (x - 5) * 1.5        ( Alex cycles for 1 + 30 minutes =  1.5 hours)

For Brian:

d = x * 1

So substituting d = x in Alex's equation:

x = 1.5(x - 5)

x = 1.5x - 7.5

7.5 = 0.5x

7/5 / 0.5 = x

15 = x.

ANSWER:

Brian's speed is 15 miles/hour.

Alex's speed is 15 - 5 = 10 miles/hour.

8 0
3 years ago
There are approximately 3.5 million deaths per year in a country express this quantity as deaths per minute
astra-53 [7]
Hmmm ok... 3.5 million.. or 3,500,000

now, keeping in mind that, there are 365 days in a year(exempting leap-year), and 24 hrs in a day, and 60 minutes in 1hr.

\bf \cfrac{3500000~deaths}{\underline{year}}\cdot \cfrac{\underline{year}}{365~\underline{day}}\cdot \cfrac{\underline{day}}{24~\underline{hr}}\cdot \cfrac{\underline{hr}}{60~min}\implies \cfrac{3500000~deaths}{365\cdot 24\cdot 60~min} 
\\\\\\
\cfrac{3500000~deaths}{525600~min}\qquad \approx \qquad 6.6590563~\frac{deaths}{min}
8 0
3 years ago
What shape are possible cross section cylinder?
san4es73 [151]

Answer:

Circle

Step-by-step explanation:

The cross-section of a cylinder is a circle.

6 0
3 years ago
What is the answer to -12= -2x-4x
Eddi Din [679]

Answer:

x = 2

Step-by-step explanation:

-12 = -2x - 4x

-12 = - 6x

x = -12/(-6) = 2

7 0
3 years ago
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In arizona 85% of the days are sunny how many are there in an average year
balandron [24]
306 Days are sunny in an average year in Arizona.
8 0
4 years ago
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