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Effectus [21]
3 years ago
9

2/9 of the students in a school are in sixth grade.

Mathematics
2 answers:
IRISSAK [1]3 years ago
5 0

There are 20 students in sixth grade

Step-by-step explanation:

  • Step 1: Find the number of sixth-graders in the school.

Total number of students = 90

Number of sixth-graders = 2/9 of total students

⇒ Number of 6th graders = 2/9 × 90 = 20 students

Alekssandra [29.7K]3 years ago
4 0

Answer:

20

Step-by-step explanation:

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What is the length of the hypotenuse?
yaroslaw [1]

Answer:

10

Step-by-step explanation:

c²=b²+a²=100

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c=10

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3 0
3 years ago
The height of a triangle is 3cm less than twice the base. The area is 10cm2
Kamila [148]

Answer:

The base is 4cm and the height is 5cm.

Step-by-step explanation:

This is a solve the system question. Call H the height of the triangle and B the base. The question tells us:

H=2B-3

and

\frac{B \times H}{2}=10

Sub the first equation into the second (as H is already isolated). You will end up with a quadratic equation - solve that any way you wish (e.g. quadratic formula). I've provided the factored form below which shows you the roots:

\frac{B(2B-3)}{2}=10\\\frac{2B^2-3B}{2}=10\\2B^2-3B=20\\2B^2-3B-20=0\\(2B+5)(B-4)=0\\B= - \frac{5}{2},4

In this question, we take B=4. You can't have a negative side length so the other answer is eliminated. Now sub the value for B into either of the original equations. I'll use the first, again because H is already isolated:

H=2(4)-3\\H=8-3\\H=5

3 0
3 years ago
How much greater is the value of the 6 in 4,786.53 than in 3,821.69?
zepelin [54]

Answer:

The 6 in 4,786.53, is 6 times greater than the 6 in 3,821.69.

Step-by-step explanation:

The value of 6 in 4,786.53, is in the ones. 6

The value of 6 in 3,821.69, is in the tenths. 0.6

6/0.6 = 10

The 6 in 4,786.53, is 6 times greater than the 6 in 3,821.69.

Hope that helps!

4 0
2 years ago
The Shinkansen, the fastest train in Japan, traveled 75 kilometers in 0.25 hours. What was its speed in kilometers per hour?
d1i1m1o1n [39]

Answer:

300 kilometers per hour

Step-by-step explanation:

See the step-by-step solution in the picture attached below.

I hope this answer will help you. Have a nice day !

8 0
3 years ago
What major contribution to both government in England and in the colonies was made by the Roman style of government?
Lera25 [3.4K]

Answer:

B

Step-by-step explanation:

8 0
3 years ago
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