HAL со:
15. M
tic
B
S
16. 7
f
Find the ratios x:y: z if:
(a) x: y = 9:10 and y: z= 5:3
(b) x = 4y and 2y = 3z
If x : y = 9:11, find the ratio (5x – 3y): (2x + 3y).
Two numbers are in the ratio s:t. If the first is a, find the second
The ratio of the radii of two spheres is 4 : 5. What is the ratio of
(a) their surface areas.
(b) their volumes.
The length of each side of a square is increased by 15%. Calculate
percentage increase in its area.
There is a 25% loss when an article is sold at sh. 200. At what price she
it be sold in order to make a profit of 5%?
A manufacturer sells goods to a shopkeeper at a profit of 15%
shopkeeper sells them so as to make a profit of 25%. During a sale.
shopkeeper reduced his prices by 10%. Find, to the nearest shilling,
factory nrice of an article which is marked at sh. 450 during the sale​

answer:

125 yards

explanation:

75+50=125. that is my answer

its 50 miles away from the starting point

simplifying

5(x + -6) = 2(x + 3)

reorder the terms:

5(-6 + x) = 2(x + 3)

(-6 * 5 + x * 5) = 2(x + 3)

(-30 + 5x) = 2(x + 3)

reorder the terms:

-30 + 5x = 2(3 + x)

-30 + 5x = (3 * 2 + x * 2)

-30 + 5x = (6 + 2x)

solving

-30 + 5x = 6 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-30 + 5x + -2x = 6 + 2x + -2x

combine like terms: 5x + -2x = 3x

-30 + 3x = 6 + 2x + -2x

combine like terms: 2x + -2x = 0

-30 + 3x = 6 + 0

-30 + 3x = 6

add '30' to each side of the equation.

-30 + 30 + 3x = 6 + 30

combine like terms: -30 + 30 = 0

0 + 3x = 6 + 30

3x = 6 + 30

combine like terms: 6 + 30 = 36

3x = 36

divide each side by '3'.

x = 12

simplifying

x = 12

this should .