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My name is Ann [436]

2 years ago

7

Bicycles have 2 wheels an tricycles have 3. There are a total of 7 bicycles and tricycle. If there are 17 wheels in all how many

bicycles are there?

1 answer:

Anika [276]2 years ago

5 0

There are 7 bicycles and 1 tricycle

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If you run a marathon of 26 1/5 miles in a time of 5 4/5 how far do you run in 1 hour<br><br>pls

alisha [4.7K]

First let's make both the miles and the hours ran improper fractions:

$26+\frac{1}{5}=\frac{131}{5}\\ 5+\frac{4}{5}=\frac{29}{5}$

So, to find our miles per hour, we have to divide the miles by the hours to get: $\frac{\frac{131}{5}\text{miles}}{\frac{29}{5}\text{hours}}=\frac{131\text{miles}}{29\text{hours}} \\ \text{ Now we have to divide the top and the bottom by 29 to get our miles per hour so: }\\ \frac{\frac{131}{29}}{\text{hour}} \approx \frac{4.52 \text{miles}}{\text{hour}}$

8 0

2 years ago

Prove that : sinA/1+cosA + 1+cosA/sinA=2cosecA

tekilochka [14]

Step-by-step explanation:

$\frac{sinA}{1+cosA} +\frac{1+cos}{sinA} =2cosec\\\\\\\frac{sin^{2}A+(1+cos)^{2} }{sinA(1+cosA)} \\\\$

$\frac{sin^{2}A+1+cos^{2}+2cos}{sinA(1+cosA)} \\\\$ and we have $sin^{2}+cos^{2} =1$

so $\frac{1+1+2cosA }{sinA(1+cosA)} \\\\$

$\frac{2+2cosA }{sinA(1+cosA)} \\\\$

$\frac{2(1+cosA)}{sinA(1+cosA)} \\\\$

$\frac{2}{sinA}$ we have $\frac{1}{sin}=cosec\\$

<em>Finally </em> $2cosecA$ <em />

<em>I really hope this helps coz it took much time </em>

3 0

2 years ago

Can someone help me this please? Problems 3 and 4. Number 3 is the "Find x" and Number 4 is the Yield sigh.

Nataly [62]

Answer:

I am gonna take a guest and say <em>178</em> for number 3. And for number 4, the answer is <em>44.</em>

Step-by-step explanation:

For number 3, I added 76 and 102 which equals 178. For number 4, I put n+6+3n-10=180 because its a triangle. Do the math and you get n=44. Correct me if I am wrong; I tried my best.

6 0

2 years ago

I am a polyhedron.

scZoUnD [109]

It could be a deltahedron. A deltahedron has all faces being an equilateral triangle. The amount of faces can vary from 4, 6, 8, 10, 12, 14, 16 and 20.

4 0

3 years ago

Ethan has 18 cartons of yogurt in a fridge, of which 6 were blueberry 3 were strawberry and 9 were orange cream. What is the pro

Ivenika [448]

Answer:

54/324

Step-by-step explanation:

Multiply probability of first event (6/18) by probability of second (9/18), you can then simplify if you need to to 1/6 or leave it as 54/324

5 0

2 years ago