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Nady [450]
3 years ago
12

The ratio of the numerator to the denominator of a fraction is 2 to 3. If both the numerator and the denominator are increased b

y 2, the fraction becomes . What is the original fraction?
Mathematics
1 answer:
Kipish [7]3 years ago
8 0

Answer:

a) If both the numerator and the denominator are increased by 2, the fraction becomes?

= 4/5

b) What is the original fraction?

= 2/3

Step-by-step explanation:

The ratio of the numerator to the denominator of a fraction is 2 to 3.

a) If both the numerator and the denominator are increased by 2, the fraction becomes .

2:3 = 2/3

We are told that both numerator and denominator are increased by 2, hence:

2 + 2/3 + 2

= 4/5

b) What is the original fraction?

The ratio of the numerator to the denominator of a fraction is 2 to 3.

Hence, the original fraction is:

2:3 = 2/3

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What is the contrapositive of the statement below?
algol13

Answer:

B. -y = -x

Step-by-step explanation:

When the values on both sides of the equal sign are changed, it becomes a negative number.

6 0
2 years ago
The mean one-way commute to work in Chowchilla is 7 minutes. The standard deviation is 2.4 minutes, and the population is normal
adell [148]

Answer:

The answer is below

Step-by-step explanation:

Given that:

The mean (μ) one-way commute to work in Chowchilla is 7 minutes. The standard deviation (σ) is 2.4 minutes.

The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:

z=\frac{x-\mu}{\sigma}

a) For x < 2:

z=\frac{x-\mu}{\sigma}=\frac{2-7}{2.4} =-2.08

From normal distribution table,  P(x < 2) = P(z < -2.08) = 0.0188 = 1.88%

b) For x = 2:

z=\frac{x-\mu}{\sigma}=\frac{2-7}{2.4} =-2.08

For x = 11:

z=\frac{x-\mu}{\sigma}=\frac{11-7}{2.4} =1.67

From normal distribution table, P(2 < x < 11) = P(-2.08 < z < 1.67 ) = P(z < 1.67) - P(z < -2.08) = 0.9525 - 0.0188 = 0.9337  

c) For x = 11:

z=\frac{x-\mu}{\sigma}=\frac{11-7}{2.4} =1.67

From normal distribution table,  P(x < 11) = P(z < 1.67) = 0.9525

d) For x = 2:

z=\frac{x-\mu}{\sigma}=\frac{2-7}{2.4} =-2.08

For x = 5:

z=\frac{x-\mu}{\sigma}=\frac{5-7}{2.4} =-0.83

From normal distribution table, P(2 < x < 5) = P(-2.08 < z < -0.83 ) = P(z < -0.83) - P(z < -2.08) =  0.2033- 0.0188 = 0.1845  

e) For x = 5:

z=\frac{x-\mu}{\sigma}=\frac{5-7}{2.4} =-0.83

From normal distribution table,  P(x < 5) = P(z < -0.83) = 0.2033

8 0
3 years ago
1. Solve the following proportion x/2 = 8/9
Ivanshal [37]
X/2=8/9   | *2
x=16/9≈ 1,78

2. 1 $.........1,09 Euro
      x$...........157 Euro

x=157*1/1,09≈144,04 $
5 0
3 years ago
Please help with this arc equation.
boyakko [2]

Answer:

Part 1) arc\ AB=49^o

Part 2) arc\ ABC=204^o

Part 3) arc\ BAC=156^o

Part 4) arc\ ACB=311^o

Step-by-step explanation:

Part 1) Find the measure of arc AB

we know that

arc\ AB=m\angle AOB ----> by central angle

we have

m\angle AOB=49^o

therefore

arc\ AB=49^o

Part 2) Find the measure of arc ABC

we know that

The central angle of complete circle is equal to 360 degrees

so

arc\ ABC=360^o-107^o-49^o=204^o

Part 3) Find the measure of arc BAC

we know that

arc\ BAC=arc\ BA+arc\ AC ----> by angle addition postulate

we have

arc\ BA=49^o ---> by central angle

arc\ AC=107^o ---> by central angle

so

arc\ BAC=49^o+107^o=156^o

Part 4) Find the measure of arc ACB

we know that

The central angle of complete circle is equal to 360 degrees

so

arc\ ACB=360^o-arc\ AB

substitute

arc\ ACB=360^o-49^o=311^o

4 0
3 years ago
Select the functions that have identical graphs.
Elan Coil [88]

Answer:

c. 1 and 3

Step-by-step explanation:

To quickly solve this problem, we can use a graphing tool or a calculator to plot each equation.

Please see the attached image below, to find more information about the graph

s

The equations are:

1) y = sin (3x + π/6)

2) y = cos (3x - π/6)

3) y = cos (3x - π/3)

Looking at the graphs, we can see that the identical ones

are equations one and three

Correct option:

c. 1 and 3

3 0
3 years ago
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