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Phantasy [73]
3 years ago
7

A car travled 200 miles in 4 hours . What was the car average rate of speed in miles per hour ?

Mathematics
2 answers:
statuscvo [17]3 years ago
8 0
The answer would be 50miles/h
Dahasolnce [82]3 years ago
7 0

rate = 200 miles/ 4 hours = 50 miles/hour

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Solve the following triangle in which given sides are<br> a=7 b=7 c=9
blagie [28]
We have an isosceles triangle;
A=opposite angle side a.
B=opposite angle side b.
C=opposite angle side c.

A=B
Method 1:

We can divide the isosceles triangle in two right triangles,
hypotenuse=7
side=9/2=4.5

B=A=arccossine (4.5/7)=49.994799...º≈50º
C/2=90º-50º=40º  ⇒ C=2*40º=80º

Answer:
a=7;  A=50º
b=7;  B=50º
<span>c=9;  C=80º

Method 2:
Law of cosines:
a²=b²+c²-2bcCosA  ⇒CosA=(a²-b²-c²)/(-2bc)
CosA=(49-49-81) / (-126)=0.642857
A=arco cos (81/126)≈50º

B=A=50º

A+B+C=180º
50º+50º+C=180º
C=180º-100º
C=80º

Answer:

</span>a=7;  A=50º
b=7;  B=50º
<span>c=9;  C=80º</span>

8 0
3 years ago
PLEASE HELP!!<br><br> What is the value of y in the product of powers below?
Eduardwww [97]
4       will be y                                                hope this helps u

6 0
3 years ago
Read 2 more answers
HELP ME PLEASE I NEED THIS &lt;3333
WITCHER [35]

Answer:

214°

Step-by-step explanation:

The arc subtending an angle at the centre are equal, that is

arc ED = 90° and

arc DF = 360° - (90 + 146)° = 360° - 236° = 124°

Thus

arc EDF = arc ED + arc DF = 90° + 124° = 214°

4 0
3 years ago
13 ≤ 4n n = 3 <br><br> True or false ? ( show work )
yaroslaw [1]

Answer:

False

Step-by-step explanation:

13 ≤ 4n if n = 3

13 ≤ 12

Is this true?

First of all this symbol (≤) means

  1. Less than
  2. Equal to

Is 13 less than 12?

No

Is 13 equal to 12?

No

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

5 0
3 years ago
Solve pls branliest!
Shkiper50 [21]

Answer:

2004-(-185)=2189

-185+469=284

Step-by-step explanation:

I double checked them

5 0
3 years ago
Read 2 more answers
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