The range would be between 2000 and 3000 PSI.
Explanation:
2500 PSI - 500 PSI = 2000 PSI
2500 PSI + 500 PSI = 3000 PSI
Hope this helps :)
Answer:
Q1A) $1750
Q1B) 64.3 %
Q2A) $49.50
Q2B) 66%
Step-by-step explanation:
Q1A) Total prize money for competition
= $500/4 × 14
= <u>$</u><u>1</u><u>7</u><u>5</u><u>0</u>
Q1B) Percentage of money given as first prize
= 9/14 × 100%
= <u>6</u><u>4</u><u>.</u><u>3</u><u> </u><u>%</u> (3 s.f)
Q2A) Total amount spent on music, films and books
= $16.50/5 × 15
= <u>$</u><u>4</u><u>9</u><u>.</u><u>5</u><u>0</u>
Q2B) Total amount as a percentage of $75
= 49.5/75 × 100%
= <u>6</u><u>6</u><u>%</u>
You could factor a 7 out of 7 + 14 to get 7(1 + 2).
This would equal the same thing as 7 + 14, which is 21.
7 * 3 = 21.
21 can be factored like so:
1 * 21 = 21
3 * 7 = 21
Given:
1st purchase: <span>38 bed sheets and 61 towels for $791.50
2nd purchase: </span><span>54 bed sheets and 50 towels for $923
Let x = bed sheets ; y = towels
38x + 61y = 791.50
54x + 50y = 923.00
Find the value of y:
50y = 923.00 - 54x
y = 923/50 - 54x/50
y = 18.46 - 1.08x
Substitute y to find the value of x.
38x + 61y = 791.50
38x + 61(18.46 - 1.08x) = 791.50
38x + 1126.06 - 65.88x = 791.50
38x - 65.88x = 791.50 - 1126.06
- 27.88x = -334.56
x = -334.56/ -27.88
x = 12
Find the value of y using the value of x.
y = 18.46 - (1.08x)
y = 18.46 - (1.08*12)
y = 18.46 - 12.96
y = 5.5
Each bed sheet costs $12 and each towel costs $5.50
To check:
</span>38x + 61y = 791.50
38(12) + 61(5.5) = 791.50
456 + 335.5 = 791.50
791.50 = 791.50
<span>54x + 50y = 923.00</span>
54(12) + 50(5.5) = 923
648 + 275 = 923
923 = 923