I need help with 18-19

Mathematics

2 answers:

Svet_ta [14]2 years ago

8 0

Answer:

18-19= -1

Step-by-step explanation:

18-19=-1

Sweetheart, you cant subtract a smaller number from an bigger number or it will be a negitive number so the answer is -1

elena-s [515]2 years ago

8 0

Answer:

18. p = 5

19. b = 8

Step-by-step explanation:

all you have to do is apply the inverse of the number being added to the variable to the other side of the equation to balance the equation. And if you are ever stuck there are great algebra calculators online. For example MathPapa. Good luck

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Write the fraction 2/5 as an equivalent with the given denominator 25

OlgaM077 [116]

Answer:

10/25

Step-by-step explanation:

2/5 = x/25

We need to multiply the bottom by 5 to get to 25

5*5 = 25

What we to the bottom, we do the the top

2/5 * 5/5 = 10/25

6 0

3 years ago

Read 2 more answers

a cell phone company has a basic monthly plan of $40plus $0.45 for many minutes ised over 700. John was charged a total of $48.1

jonny [76]

Cost of month plan = $40

Cost of minutes used = $0.45 after 700 minutes

Total cost = $48.10

Let x be the total minutes used
Total cost = 40 + 0.45(x - 700)

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Form the equation and solve x
------------------------------------------------------------------
40 + 0.45(x - 700) = 48.10
40 + 0.45x - 315 = 48.10
0.45x - 275 = 48.10
0.45x = 48.10 + 275
0.45x = 323.10
x = 323.10 ÷ 0.45
x = 718

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Answer: John had used 718 mins this month
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3 years ago

How do I simplify 4 over 12 times 8 over 20

garri49 [273]

4 over 12 times 8 over 20

= 4/12 * 8/20 ....( 4/12 = 1/3; 8/20 = 2/5)

=1/3 * 2/5

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2 years ago

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