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Leto [7]
3 years ago
9

What does 9 x 2/5 equal​

Mathematics
2 answers:
sergeinik [125]3 years ago
4 0

Answer:

3 3/5

Step-by-step explanation:

9 * 2/5

We rewrite the whole number as a fraction

9/1 * 2/5

Multiply the numerators

9*2 = 18

Multiply the denominators

1*5 = 5

Numerator over denominator

18/5

Now we change it to a mixed number

5 goes into 18 3 times 3*5 = 15   18-15 = 3

The 3 that is left over goes over the denominator

3 3/5

fomenos3 years ago
3 0

Answer:

3 3/5

Step-by-step explanation:

9/1*2/5=18/5

=3 3/5

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The diameter of a circle is 9 feet. Find the radius.
slava [35]
The radius is half of the diameter.

9/2=4.5

The radius is 4.5 feet.

Hope this helps!
4 0
3 years ago
An article estimates, with 90% confidence, that the proportion of elementary school teachers who are female is 82%. The article
GREYUIT [131]

Answer:   (80% , 85%)

Step-by-step explanation:

We know that, confidence interval for population proportion is given by :-

(p-E , p+E)

, where p = sample proportion , E = Margin of error.

Given : Proportion of elementary school teachers who are female = 82%.

The article also states the maximum error of their estimate = 3%.

Then, the 90% confidence interval for the proportion of elementary school teachers who are female will be :

(82%-2% , 82%+3%)

= (80% , 85%)

Hence, the resulting 90% confidence interval for the proportion of elementary school teachers who are female = (80% , 85%)

5 0
3 years ago
Two buses leave a station at the same time and travel in opposite directions. One bus travels 15 /kmh faster than the other. If
Nat2105 [25]
Since the buses travel in opposite directions, the speed at which they distance themselves is the sum of their speeds.
One bus travels at speed s.
The other bus travels at speed s + 15.
The sum of the speeds is s + s + 15 = 2s + 15

speed = distance/time

distance = speed * time

366 = (2s + 15) * 2

183 = 2s + 15

168 = 2s

s = 84

The slower bus travels at 84 km/h.

s + 15 = 84 + 15 = 99

The faster bus travels at 99 km/h.

Check:
In 2 hours, the slower bus travels 2 * 84 km = 168 km
In 2 hours, the faster bus travels 2 * 99 km = 198 km
In 2 hours, the buses are 198 km + 168 km = 366 km apart.
Our answer is correct.
6 0
3 years ago
The sum of two numbers is -6. The difference is 16. Find the two numbers.
Bess [88]

Answer:

-5\:\mathrm{and}\: 11

Step-by-step explanation:

We can write the following system of equations:

\begin{cases}x+y=6\\x-y=16\\\end{cases}

Adding both equations together, we isolate x and get:

2x=22,\: x=11

Plugging x=11 in any of the equations, we can solve for y:

11+y=6,\: y=-5

Verify that the solution pair (11, -5) works \checkmark

Therefore, the two numbers are \fbox{$-5\:\mathrm{and}\: 11$}.

7 0
2 years ago
Marsha's house is located on the coordinate plane below. Tasha's house is located 6 units from Marsha's house. Which of the foll
Gekata [30.6K]

B 4,2 because it is 6 units away from the point

3 0
2 years ago
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