MATHEMATICS HIGH SCHOOL

Suppose you got 8 mangoes and 3 apples for $18 and 3 mangoes and 5 apples for $14.50.How many does each mango and each apple cost?

Answers

Answer 1
Answer: m = mangoes
a = apples

8m + 3a = 18               Equation 1
3m + 5a = 14.50          Equation 2
Lets multiply equation 1 by 5 and equation 2 by 3
The new equations are:
45m + 15a = 90
9m   + 15a = 43.5

Subtract them and get:
36m = 46.5
m     = 1.30     Divide both sides by 36

Substitute m into equation 2 (either is fine, but choose the easier one)
3(1.30) + 5a = 14.5
3.9     + 5a  = 14.6        Expand the bracket
5a = 10.6                      Minus both sides by 3.9
a   = 2.12                      Divide both sides by 5

Mangoes cost $1.30
Apples cost $2.12 (more like $2.10)

I feel that my working out is wrong, but that is how you work out the answer.

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2. The line BC in the figure above is the ___ of the cylinder.A. slant height
B. axis
C. altitude
D. vertex

Answers

Answer:

BC denotes the axis of the cylinder in the given figure.

Step-by-step explanation:

Given an oblique cylinder. It is three dimensional shape having sides not perpendicular to the base. it means it is leaning toward one side left or right as shown in figure below.

We have to determine what BC denotes.

Height is always perpendicular to the base so the given line BC is the axis of the cylinder . When there is a slant to the cylinder axis is also not perpendicular to the base.

Thus, BC denotes the axis of the cylinder in the given figure.
The line BC in the figure above is the AXIS of the cylinder.

Axis of the cylinder is the line formed by the centers of the bases of a cylinder.

What is the length of a rectangle with an area of 8 1/0 square feet and a width of 2 1/4 feetA. 1/8 ft
B. 3 3/5 ft
C. 4 2/5 ft
D. 1 5/72

Answers

The answer D because that’s the answer that I think

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Answers

Subtract the old reading from the new reading

7143 - 6997 = 146

146 units in all

Note: The first one hundred units costs 24p each unit
the rest cost 16p per unit

100 + 46 = 146
100(24p) = 2400p
46(16p) = 736p

2400 + 736 = 3136p

cost: 3136p

hope this helps

Put the following equation of a line into slope-intercept form, simplifying all fractions2x+4y=4

Answers

Answer:

y = -1/2x + 1

Step-by-step explanation:

You want to get y by itself. subtract 2x from both sides. now you're left with 4y = -2x + 4. then divide both sides by 4 to get y by itself. this equals y = -1/2x + 1

Solve each quadratic equation. 4x²=100

Answers

x=100/4
x=25
the square root of 25 is 5
that means x=5
4x^2=100
Square root 4x^2=square root 100
4x=plus or minus 10
4x/4=plus or minus 10/4
X= -2.5, x= 2.5

Time = 8 yearsInterest rate = 14%
Principal = $1,010

What is the total amount of simple interest that is earned?
a.$113.20
b.$1,131.20
c.$11,311.20
d.$113,112.00

Answers

B)1,131.20 would be the answer. 1010x0.14=141.4x8=B                                                                        
 
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