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postnew [5]
3 years ago
12

Need help with 2 3 and 4, show work if possible

Mathematics
1 answer:
marin [14]3 years ago
4 0
You're in luck i'm feeling the mood to do your homework :)


2) The table would change, the number of hydrogen and oxygen atoms would be the same ALWAYS.
3) 15 Hydrogen Atoms and 5 Nitrogen Atoms (5*3=15, 5*1=5)
4) Not so great with System of Equations, I feel like there is a value missing. It'd be much easier if I was given how many people went.
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Sylvia is hiking from Mineral Creek to Blueberry Hilla distance points of 6 1/5 miles. After hiking 2 2/3 miles , Sylvia stops f
Margarita [4]

Given:

Total distance = 6\dfrac{1}{5} miles

Hiking before lunch = 2\dfrac{2}{3} miles

To find:

How much further does Sylvia have left to hike?

Solution:

Let x be the remaining hiking distance.

We know that,

Total hiking distance = Hiking before lunch + Remaining hiking distance

6\dfrac{1}{5}=2\dfrac{2}{3}+x

\dfrac{(6\times 5)+1}{5}=\dfrac{(2\times 3)+2}{3}+x

\dfrac{30+1}{5}=\dfrac{6+2}{3}+x

\dfrac{31}{5}=\dfrac{8}{3}+x

Isolate variable term.

\dfrac{31}{5}-\dfrac{8}{3}=x

\dfrac{93-40}{15}=x

\dfrac{53}{15}=x

It can be written as

\dfrac{45+8}{15}=x

\dfrac{(3\times 15)+8}{15}=x

3\dfrac{8}{15}=x

So, 3\dfrac{8}{15} miles left to hike.

Therefore, the correct option is C.

3 0
3 years ago
Water boils at 100 \degree \text{C}100°C100, degree, C. This is 400\%400%400, percent more than my room's temperature. What is m
Sophie [7]

Answer:

20\°C

Step-by-step explanation:

Let

x------> my room's temperature

we know that

400\%=\frac{400}{100}=4

so

The equation that represent this situation is

4x+x=100

Solve for x

5x=100

x=20\°C

5 0
3 years ago
Read 2 more answers
Brian drove 638 miles in 11 hours.
NemiM [27]

Answer: 638 x= 754*11

638 x= 8294 then divide by both sides by 638

x = 13

she will drive 754 miles in 13 hrs.

Step-by-step explanation:

brainliest me

6 0
3 years ago
Find the length of ab
Anvisha [2.4K]

Answer:

^\frown_{AB}=11.16m

Step-by-step explanation:

The given circle has radius 8m and a central angle of 80\degree.

We want to find the length of arc AB.

Recall that the length of an arc is given by:

l=\frac{\theta}{360\degree}\times 2\pi r

where \theta=80\degree is the central angle and r=8m is the radius.

^\frown_{AB}=\frac{80}{360\degree}\times 2*3.14*8

This simplifies to:

^\frown_{AB}=11.16m

8 0
3 years ago
A truck driver makes a trip that covers 2,380 km in 28 hours. What is the driver’s average speed in km/h? WRITE YOUR ANSWER IN 3
il63 [147K]

Answer: Divide the total kilometers covered by the number of hours the driver travels. This means you divide 2,380 km by 28 hrs. To find the average. Meaning the average speed is 85km/h.

Step-by-step explanation:

Take the total km the driver has traveled and divide it by the total hours they have driven to find your answer.

2,380 km /28 hrs = 85 km/h

5 0
3 years ago
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