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andrey2020 [161]
4 years ago
7

How can the order of operations be used to simplify expressions? Create your own unique example showing order of operations.

Mathematics
1 answer:
Lostsunrise [7]4 years ago
4 0
10(13+12)=x thats a good one
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Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels 18 miles per hou
11111nata11111 [884]

Answer: 76 miles per hour

<u>Step-by-step explanation:</u>

east bound: t = 4, r = x - 18

west bound: t = 4, r = x

d = r * t

680 = 4(x - 18 + x)

680 = 4(2x - 18)

170 = 2x - 18

188 = 2x

94 = x

eastbound: x - 18   = 94 - 18   = 76

6 0
4 years ago
If a building casts a 20 foot shadow when the angle of elevation to the roof is 72o, how tall is the building?
SOVA2 [1]
Well im a rastafarian so u know everything, Bumboclaat
7 0
4 years ago
the quadratic p(x)=.65x squared - .047x +2 models the population p(x) in thousands for a species of fish in a local pond, x year
ivanzaharov [21]

Answer:

2007

Step-by-step explanation:

we have

p(x)=0.65x^{2} -0.047x+2

This is a vertical parabola open upward

The vertex represent a minimum

p(x) is the population in thousands for a species of fish

x is the number of years since 1997

Remember that p(x) is in thousands

so

If the population reach 66,530 fish

then

the value of p(x) is equal to

p(x)=66.53

substitute in the quadratic equation

66.53=0.65x^{2} -0.047x+2

0.65x^{2} -0.047x+2-66.53=0

0.65x^{2} -0.047x-64.53=0

Solve the quadratic equation by graphing

The solution is x=10 years

see the attached figure

therefore

Find the year

Adds 10 years to 1997

1997+10=2007

7 0
3 years ago
Could anyone find this?
LiRa [457]
A and B are correct for this one!!

4 0
3 years ago
Luna is 12 blocks from school and walk towards the concert at an average speec of 2 blocks per minute. select the equation that
irinina [24]

Answer: I do not know

Step-by-step explanation:

5 0
3 years ago
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