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3 years ago

Calculate circumstance of the circle. Use =3.14

Mathematics

2 answers:

kiruha [24]3 years ago

7 0

Answer 3.14 x 41 = 128.74 or 3.14 x 41= 44.14 I don’t know I hope this help you ?

Jobisdone [24]3 years ago

4 0

Answer: 257.48cm²

Step-by-step explanation:

Formula for circumference = 2 $\pi$ r

$\pi$ = 3.14

r = 41cm

C = 2×3.14×41

=257.48cm²

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7x-2y=16 11x+6y=32.3<br>how to solve this math problem

Aneli [31]

Answer:

Step-by-step explanation:

These types of equations are called simultaneous equations and the method we can use to solve these type of equations is either Substitution, Elimination and Graphing.

We use substitution here because it is easier.

Equation 1

$7x-2y=16$

Equation 2

$11x+6y=32.3$

Lets take equation 1

$7x-2y=16\\7x=16+2y\\x=\frac{16+2y}{7}$

This is our equation 3 , now put it inside equation 2.

$11x+6y=32.3\\11(\frac{16+2y}{7} )+6y=32.3\\\frac{176+22y}{7} +6y=32.3\\\frac{176+22y+42y}{7}=32.3\\176+22y+42y=226.1 \\\\42y+22y=226.1-176\\64y=50.1\\y=\frac{50.1}{64} \\y=0.783\\$

We found the value of y , now to find the value of x insert the value of y in equation 3

$x=\frac{16+2y}{7}\\x=\frac{16+2(0.783)}{7} \\x=\frac{16+1.566}{7}\\x=\frac{17.566}{7}\\x=2.509$

Solved ! See the attached image on both the straight line graphs i have attached for better understanding. Where both the lines intersect each other is our value of (x , y) respectively.

6 0

3 years ago

Write 6×10 to the power of 4 in standard form!<br> Please include an explanation!<br> Thanks!

lidiya [134]

Answer:

60,000

Step-by-step explanation:

Evalute

6 x 10*4

6 x 10,000

60,000 is the standard form :)

3 0

3 years ago

Read 2 more answers

What is 2 4/7 of 10 1/9

Fudgin [204]

Answer:

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katrin [286]

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3 years ago

What is the answer for -2(x-7) + 10x=34

Lelu [443]

Answer:

Step-by-step explanation:

-2x-14+10x=34

8x-14=34

8x=48

x=6

6 0

3 years ago