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lord [1]
3 years ago
8

At a concert

Mathematics
1 answer:
finlep [7]3 years ago
7 0

Answer:

adult = £5

child = £2

Step-by-step explanation:

a = adult c = child

3a + 4c = 23

1a + 5c = 15

multiply second equation by 3 and rewrite

3a + 4c = 23

3a + 15c = 45

subtract

0 - 11c = - 22

-11c = -22

11c = 22

<em><u>c</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>£</u></em><em><u>2</u></em>

subsitute into one of the equations and solve for a

1a + 5c = 15

a + 5(2) = 15

a + 10 = 15

<em><u>a</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>£</u></em><em><u>5</u></em>

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The formula for the future value V (in dollars) of an investment earning simple interest is V=p+prt, where p (in dollars) is the
Vitek1552 [10]
A) V = P + PRT
<span>     
    V=P(1+RT)
 
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P = 6000 / (1 + .08 X 7)

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5 0
4 years ago
What percent of 150 is 9?
irga5000 [103]
One of the ways to find the answer is to find how much 1 percent of 150 is. To do that we just have to divide 150 by 100:

150 / 100 = 1.5

Now we can divide 9 by 1.5 to know how much percent of 150 it is:

9 / 1.5 = 6

Let's check it:

150 * 6% = 150 * 6/100 = 15 * 6/10 = 3 * 6/2 = 18/2 = 9

It's correct then :)
3 0
3 years ago
1.4×10−5 and 2.8×10−4
leva [86]

Answer:

1 : 9

2 : 24

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Spot eats of a can of dog food each day
Anit [1.1K]

Answer:

$110

Step-by-step explanation:

First we would need to find out how many cans of dog food are required.

To find that you would divide 60 by 3.

60/3 = 20

You would then have to multiply that number by how much it costs for each pair of 3 cans, that being $5.50.

20 * 5.50 = $110

6 0
3 years ago
Two angles form a linear pair. The measure of one angle is 1/3 of the other angle. Find the measure if each angle
sdas [7]

Answer:

<em>The measure of the angles is 45° and 135°</em>

Step-by-step explanation:

When two lines intersect, a linear pair of angles is formed. Two angles are said to be linear if they are adjacent, so a linear pair of angles must add up to 180 degrees.

Let's call x and y the two required angles. Knowing they form a linear pair:

x+y=180

We also know one angle is 1/3 of the other angle, thus:

x=y/3

Or, equivalently:

3x=y

Substituting y into the first equation:

x+3x=180

Simplifying:

4x=180

Solving:

x=180/4=45

The other angle is:

y=3x=3\cdot 45=135

Thus the measure of the angles is 45° and 135°

5 0
4 years ago
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