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Otrada [13]
3 years ago
5

What's the scientific notation for 420

Mathematics
2 answers:
LenKa [72]3 years ago
8 0
4.2•10^2 is the answer to your question
fenix001 [56]3 years ago
4 0
The person on top got the correct answer so put his down i was gonna write that
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A girl is pedaling her bicycle at a velocity of 0.05 km/h east. How far will she travel in 2 hours?
SpyIntel [72]

The girl will travel 0.1 km in 2 hours

Step-by-step explanation:

The formula for speed will be used for the given problem

Given

Speed =s = 0.05 km\h

Time = t =2 hours

So,

Speed= \frac{distance}{time}\\s=\frac{d}{t}\\d=s*t\\d=0.05*2\\d=0.1\ km

The girl will travel 0.1 km in 2 hours

Keywords: Speed,Distance

Learn more about Speed at:

  • brainly.com/question/2367554
  • brainly.com/question/2670657

#learnwithBrainly

6 0
4 years ago
Write a linear function from the given values: <br><br> f(2)=-2, f(1)=1<br><br><br> f(4)=1, f(8)=4
kap26 [50]

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have:

f(2)=-2\to(2,\ -2)\\f(1)=1\to(1,\ 1).

Substitute:

m=\dfrac{1-(-2)}{1-2}=\dfrac{3}{-1}=-3

Therefore we have y=-3x+b.

Substitute the coordinates of the point (1, 1) to the equation:

1=-3(1)+b

1=-3+b      <em>add 3 to both sides</em>

4=b\to b=4

<h3>Answer: y = -3x + 4</h3>

We have:

f(4)=1\to(4,\ 1)\\f(8)=4\to(8,\ 4)

Substitute:

m=\dfrac{4-1}{8-4}=\dfrac{3}{4}

Therefore we have y=\dfrac{3}{4}x+b.

Substitute the coordinates of the point (4, 1) to the equation:

1=\dfrac{3}{4}(4)+b

1=3+b      <em>subtract 3 from both sides</em>

-2=b\to b=-2

<h3>Answer: y=\dfrac{3}{4}x-2</h3>
3 0
4 years ago
Ian and Rachel each made a trail mix. The amounts of ingredients they have are shown. Ian used all of the coconut, dried cranber
Otrada [13]

Answer:

The values written as Trail mix ingredients is not well written below is the trail mix ingredients

answer :

i) Ian made : 1 3/4 cups  of trail mix

ii) Racheal made 1/4 more cup of trail mix

Step-by-step explanation:

<em>Given that :</em>

Trail Mix Ingredients

3 /4 cup almonds

1 /4 cup pumpkin seeds

2 /4 cup coconut

3 /4 cup dried cranberries

1 2 /4 cup walnuts

1 cup granola

2 /4 cup dried bananas

i) Ian used all of coconut , dried cranberries and dried Bananas

= 2/4 + 3/4 + 2/4

Amount of trail mix made = 7/4  = 1 3/4 cups

ii) Racheal made 2 cups of trail mix containing ; all almonds , pumpkin seeds and granola

= 3/4 + 1/4 + 1 = 2 cups of trail mix

Hence Racheal made (  2 - 1 3/4 ) more trail mix than Ian

                      = 1/4 more cup of trail mix was made by Racheal

8 0
3 years ago
Which operation should you use to find a hypotenuse given an angle and<br> the opposite leg?
stiks02 [169]

Answer:

TOA

Step-by-step explanation:

3 0
3 years ago
Can someone please help me ASAP<br> 1.6 is 8% of what?
frutty [35]
1.6 is 8% of 20
Hope this helps!
7 0
4 years ago
Read 2 more answers
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