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3 years ago

Name a fraction equal to 1/2 with a denominator of 9

Mathematics

2 answers:

Lisa [10]3 years ago

7 0

1/2 = 9/18 which can cancell down to 4.5/9 but whole number fractions look better.

kolezko [41]3 years ago

3 0

4.5/9. It is technically an improper fraction but it still counts.

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The area of a circle having radius 14 cm is cm. Use * 22 7

DaniilM [7]

Answer:

A=616cm²

Step-by-step explanation:

The question says to use

$\frac{22}{7}$

for pi, now that we know that we proceed like normal and do the formula like this.

$\frac{22}{7} {r}^{2} \\\frac{22}{7} \times 196 \\ = 616$

6 0

3 years ago

A country's population in 1994 was 140 million. In 1998 it was 146 million. Estimate the population in 2011 using the exponentia

serious [3.7K]

Answer:

Estimated To Be 167 Million

Step-by-step explanation:

The exponential growth formula is given by

where: P is the population of the country, t years after the initial year (i.e. in this case, 1994). is the initial population of the country (i.e. the population of the country in 1994).

r is the growth rate of the population and

t s the number of years after the initial year.

We obtain the value of r by comparing the growth between 1994 and 1998.

Here: P = 146, , and t = 4 years

Thus To estimate the population of the country in 2011, we note that 2011 is 17 years after 1994.

Thus, the population of the country in 2011 can be estimated to be

million

Therefore, the population of the country in 2011 can be estimated to be 167 million to the nearest million

7 0

3 years ago

Plss help! Question: Find a,b and c

Roman55 [17]

Answer:

See below, please

Step-by-step explanation:

The right：

${(y + c)}^{2} - b \times (x + a) \\ = ( {y}^{2} + 2yc + {c}^{2} ) - bx - ba =$

$= {y}^{2} - bx + 2cy + {c}^{2} - ab$

The left:

$= {y}^{2} - 7x - 18y + 109$

So, after comparing the right side and the left side of this equation, we know

$b = 7$

$2c = - 18 \\ so \\ c = - 9$

${c}^{2} - ab = 109$

So,

$a = \frac{ {c}^{2} - 109}{b} = \frac{ { (- 9)}^{2} - 109}{7} = \frac{ - 28}{7} = - 4$

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2 years ago

A coin and die are tossed together. Find the Probability that

jarptica [38.1K]

Answer:

1)0.5

2)0.25

3)0.083

Step-by-step explanation:

1 is just 3/6

2 is 3/6*1/2

3is 1/6*1/2

6 0

3 years ago

AD is a diameter of a circle and AB is a chord. If AD=34cm, AB=30cm, the distance of AB from the centre of the circle is :

e-lub [12.9K]

Answer:

The distance is 8 cm

Step-by-step explanation:

The chord and the diameter form one leg and the hypotenuse of a right triangle. The other leg, BD, has length ...

BD² +AB² = AD²

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BD = √256 = 16

The segment from the center of the circle to the midpoint of the chord is the midline of triangle ABD, so is half the length of BD.

distance from AB to the center = 16/2 = 8 . . . cm

7 0

3 years ago