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Ghella [55]
3 years ago
12

Andy drove 840 miles in 12 hours. How far could he drive in 3 hours

Mathematics
2 answers:
WITCHER [35]3 years ago
7 0
210 miles in 3 hours
hodyreva [135]3 years ago
4 0
840mi. - 12 hrs
   x       -  3 hrs
This is a simple cross multiplying problem.
840 _ 12
  x   --  3    ⇒12x=3(840) ⇒ 4x=280 ⇒ x=70 miles
:D
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a small plane lands at a point 324 miles east and 92 miles north of the point at which it took off. Find the distance the plane
Setler79 [48]

Answer: 336.80 miles, 15.85^{\circ} North of east

Step-by-step explanation:

Given

Plane lands at a point 324 miles east and 92 miles north

Distance is given by using Pythagoras theorem

\Rightarrow d=\sqrt{324^2+92^2}\\\\\Rightarrow d=\sqrt{113,440}\\\\\Rightarrow d=336.80\ \text{miles}

Direction is given by using figure i.e.

\Rightarrow \tan \theta=\dfrac{92}{324}\\\\\Rightarrow \tan \theta=0.2839\\\\\Rightarrow \theta=15.85^{\circ}

Direction is 15.85^{\circ} North of east

7 0
3 years ago
4. (#18) A vine is 1.3 inches long now and it will grow 0.2 inches a day. Identify a rule for the linear function that describes
Jet001 [13]

The rule for the linear function that describes the length of the vine is L = 1.3 + 0.2d

The number of days it would take the vine to grow to be 10.3 inches long is 45 days

<h3>Linear functions</h3>

From the question, we are to determine a linear function that describes the situation

From the given information,

Then vine is 1.3 inches long now

and it grows 0.2 inches a day

∴ After the days, the vine will increase by 0.2d in length

Then,

If L represents the length of the vine, d represent the number of days

The length of the vine after d number of days will be

L = 1.3 + 0.2d

Hence, the rule for the linear function that describes the length of the vine is L = 1.3 + 0.2d

Now, we are to determining the number of days it will take the vine to grow to be 10.3 inches long

Using the above linear function

L = 1.3 + 0.2d

10.3 = 1.3 + 0.2d  

0.2d = 10.3 - 1.3

0.2d = 9

d = 9 / 0.2

d = 45

Hence, the number of days it would take the vine to grow to be 10.3 inches long is 45 days

Learn more on Linear function here: brainly.com/question/2408815

#SPJ1

7 0
2 years ago
Which one is a polynomial ? it’s not B!!
Alina [70]
A probably i dont know
7 0
3 years ago
What time is 5 3/4 hours after 11:32 pm?
elixir [45]

11:32 pm + 5 hours= 4:32pm

4:32 pm + 45 minutes = 5:17 pm

3/4 hour = 45 min


6 0
3 years ago
Read 2 more answers
Sam has three identical tennis balls with a diameter of 2.7 inches. Determine the volume of all three tennis balls?
melamori03 [73]

Answer:

They are 30.93 in³ altogether.

Step-by-step explanation: V = 4/3 π r³

r = 2.7/2 = 1.35

π x 1.35 x 1.35 x 4/3 = 10.31 in³

10.31 x 3 = 30.93

3 0
3 years ago
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