suppose that the ages of a father are in the ratio 9:4 today. Six years from now their ages will be in the proportion 2:...

MS

Miamoto Shizuka

17 tháng 12 2016

suppose that the ages of a father are in the ratio 9:4 today. Six years from now their ages will be in the proportion 2:1. What's the father ages today

#Toán lớp 8

2

NH

Nguyễn Huyền Anh

1 tháng 2 2017

54

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LH

Lưu Hiền

20 tháng 12 2016

bạn có thể ... dịch sang mother tounge hộ mình đc ko, ko hiểu cái j sất

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NN

Nam Nguyễn Trọng

18 tháng 10 2017 - olm

A factory has male and female workers in the ratio of 3 : 5. Some female workers but no male workers resigned. 5 more workers are then employed. The ratio of male to female workers is now 4 : 3 while the number of female workers is 15. Find possible original numbers of female workers.

#Toán lớp 8

0

NH

Nguyễn Hồng Mến

6 tháng 4 2015 - olm

1,A circular cynlinder with a volume 81 pi.if the perimeter of the base is 6 pi,the height is ?2,The total surface area of 2 indentical blocks which together with the volume is 1,458 units is ?3,If one side of 6-inch ruler will be marked in inches,how many points will be in the edge including 0 and 6 inch mark?4,Two sides of the O and P pointer that started from a vertical position as shown.Pointer O turns back the clock with a speed of 5 degrees per second and pointer P rotate clockwise at9...

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#Toán lớp 8

0

LH

La Ho Thi Minh Khue

3 tháng 2 2017

Question 1:In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is____

Q2:Find the highest common factor of 147x and 98y if HCF(x;y)=1

Q3: A pattern of triangles is made from matches shown as follows

if there are 207 matches used, how many triangles has been formed

#Toán lớp 8

1

HV

Hồ Việt Bảo Long

3 tháng 2 2017

Q1 có ai dịch đề dùm k ạ

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SE

Sahra Elizabel

26 tháng 12 2016 - olm

the length and width of a rectangle are in the ratio of 5:12. If its rectangle has an area of 240 square centimeters then what is the length in centimeters of its diagonal?

#Toán lớp 8

1

TT

Thiên Thiên Chanyeol

26 tháng 12 2016

the length of the diagonal is 26 centimeters

k cho mình nha cảm ơn

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PP

Phạm Phương

15 tháng 3 2016 - olm

In a triangle of area 100cm² , the ratio between the length of one side and the corresponding height is 1:2.
What is the length of the height, in m?
Answer: The height is...m.
(write your answer by decimal in simplest form)

#Toán lớp 8

1