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stiv31 [10]
3 years ago
13

The diameter of a circle is 4 cm. Which equation can be used to find its circumference?

Mathematics
1 answer:
luda_lava [24]3 years ago
8 0

Answer: OC = πx4

Step-by-step explanation:

This question is incomplete, the correct question is

The diameter of a circle is 4 cm. Which equation can be used to find its circumference?

OC = πx2

OC= πx4

4

Answer,

Since the diameter is given as 4cm

Also,

The circumference of a circle OC = π x diameter

Therefore, OC = πx4

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Solve for x. Write the smaller solution first, and the larger solution second. (x -4)(-5x +1)=0
Vesnalui [34]

The product of the two is 0, so one of them have to equal 0 as any number multiplied by 0 is 0.

First solution: x - 4 = 0

If x - 4 = 0, then x = 4. So the first solution for <em>x </em>is 4.

Second Solution: -5x + 1 = 0

Solving...

-5x + 1 = 0

-5x = -1

x = -1/-5

x = 1/5 or 0.2


So x = 0.2 and 4

4 0
3 years ago
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Check all the statements that are true:
Dahasolnce [82]

Answer:

The true statements are;

A, B, G, H, I, J

Step-by-step explanation:

To answer the question, we test each option as follows

A. If a and b both divide c, then ab divides c².

The above statement is true as c/a exists,

c/b exits therefore c²/ab = c/a×c/b

B. If p and q are distinct primes, then p2q2 has exactly 11 positive divisors.

The above statement is true as p² and q² each have 3 positive divisors, therefore, p²q² will also have pq and p²q² as possible divisors, therefore, true

C. If p and q are distinct primes, then p+q is prime as well.

The above statement is not correct as 5 + 7 = 12 an even number

D. If a divides b and c divides d, then a+c divides b+d.

The above statement is not correct as

8 is divisible by 2 and

9 is divisible by 3

but 17 is not divisible by 5

E. If p is prime, then so is p+2.

The above statement is not correct as 7 + 2 = 9 which is divisible by 3

G. If a and b both divide c, and a and b are relatively prime, then ab divides c.

The above statement is true as both a and b are factors of c

H. There are infinitely many prime numbers.

The above statement is true as there are infinitely many numbers

I. If p is prime, then p2 has exactly 3 positive divisors.

The above statement is true

1, p and p²

J. There are three consecutive odd numbers that are prime.

The above statement is true

3, 5, 7.

4 0
3 years ago
Factor 42v^3 – 21v^2 + 34v – 17
BartSMP [9]

Answer:

(2v-1)(21v^2+17)

Step-by-step explanation:

add and subtract the second term to the expression and factor by "grouping"

answer should be:

(2v-1)(21v^2+17)

4 0
3 years ago
A professional baseball team won 84 games this season. The team won 14 more games than it lost. There were no ties. How many gam
siniylev [52]

14+x=84

x=70

The team lost 70 games.

84+70=x

154=x

The team played a total of 154 games.

5 0
3 years ago
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Andrew is flying a kite held by 175 meters of string that makes an angle of elevation with the ground of 40. Emma is standing di
Alja [10]

Answer:

x=134.05m

Step-by-step explanation:

From the question we are told that:

Slant Height of Kite h_s=175

Angle \theta=40 \textdegree

Since Emma,The Kite and Andrew forms a right angle triangle

Generally the equation for distance between Andrew from Emma is mathematically given by

 x=h_scos\theta

 x=175cos40

 x=134.05m

8 0
3 years ago
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