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Marina CMI [18]
3 years ago
8

What is the solution to this equation?

Mathematics
1 answer:
GuDViN [60]3 years ago
3 0
20x+12=14x+30
6x+12=30
6x=18
x=3
answer D
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Twice a number is increased by one-third the same number. The result is 42. Find the number
Sonja [21]
X - the unknown number.

2x +  \frac{1}{3} *x = 42 \\  \frac{6}{3} *x +  \frac{1}{3} *x = 42 \\  \frac{7}{3} *x = 42 \\ x = 42 :  \frac{7}{3} \\ x = 42 *  \frac{3}{7} \\ x =  \frac{126}{7} \\ x= 18

x = 18. 
5 0
4 years ago
A circle has a circumference of 34 54 cm. What is the area of the circle to the nearest whole centimeter? Use 3.14
inysia [295]

Answer:

<h2>9498.5 m</h2>

Step-by-step explanation:

We know that the Circumference = 3454 cm

And we also know that the formula for the Circumference of Circle is,

2\pi \times r

So we can put the equation this way,

3454 = 2\pi \times r

So we can solve for 'r'

3454 = 2 \times 3.14 \times r \\ 3454 = 6.28r \\ r   =   \frac{3454}{6.28}  \\ r = 550

Now we have radius and we can solve for the area of the circle,

\pi \times  {r}^{2}

3.14 \times 550 \times 550  \\  = 949850

We can convert this to meter,

9498.5 m

I am not sure if this is correct just let me know thanks :)

8 0
3 years ago
What is 10 over 64 in simplest form
kykrilka [37]
To write a fraction in simplest form, you have to divide the numerator and the denominator by their greatest common factor.

Factors of 10: 1, 2, 5, 10
Factors of 64: 1, 2, 4, 8, 16, 32, 64
Common Factors: 1, 2
Greatest Common Factor: 2

\frac{10}{64} = \frac{10/2}{64/2} = \frac{5}{32}
6 0
3 years ago
What is the final step in the problem-solving process
Mademuasel [1]
<span>Implement and follow up on the solution. Hope this helps :)</span>
7 0
4 years ago
An English professor determined the mean of her final exam scores to be 78 with a standard deviation of 6.3. Find the minimum an
Morgarella [4.7K]

Solution: We are given:

Mean =78, Standard-deviation =6.3

We know that a usual values of the test scores falls within 2 standard deviation from the mean.

Therefore, the minimum usual test score is:

Mean - 2 Standard-deviation

78-2 \times 6.3

78-12.6

65.4

The maximum usual test score is:

Mean + 2 Standard-deviation

78+2 \times 6.3

78+12.6

90.6

Therefore, the minimum and maximum “usual” values of the test scores are:

65.4 and 90.6

5 0
3 years ago
Read 3 more answers
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