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fredd [130]
2 years ago
12

Michael mowed lawns during the summer to earn extra money. He charged each customer $30 to cut the grass plus $9 for each hour o

f work. One customer paid Michael $93. How long did it take Michael to mow that customer's lawn?
Mathematics
1 answer:
kramer2 years ago
6 0
Answer: 7 hours


Explanation: We can use the equation 93=9h+30 to represent the problem.

When we solve for h with (93-30)/9, we get 7 hours.
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One day, a person went to a horse racing area. Instead of counting the number of humans an horses, he conuted 74 heads and 196 l
DerKrebs [107]
Data:

Humans (x) = 2 Legs
Horses (y) = 4 Legs

74 Heads
196 Legs

Solving:

Addition method

\left \{ {{x + y =74} \atop {2x + 4y =196}} \right.

Simplify by (-4) The first equation

\left \{ {{x + y =74(-4)} \atop {2x + 4y =196}} \right.
\left \{ {{-4x - \diagup\!\!\!\!\!4y =-296} \atop {2x + \diagup\!\!\!\!\!4y =196}} \right.
\left \{ {{-4x =-296} \atop {2y =196}} \right.
-2x = -100.simplify(-1)
2x = 100
x = \frac{100}{2}
\boxed{x = 50}

Now, to find the number of horses, I will use the following equation and I will replace the found value, we will have:

x + y = 74
50+y = 74

Number with incognito are to the left of the equality and numbers without incognito are to the right, remembering that when changing of side changes the signal.

y = 74-50
\boxed{y = 24}

Answer:
Humans = 50
Horses = 24


7 0
3 years ago
(3x-8)° (4x-23)° fine the x
Veronika [31]

You cannot find x.

Because both phrases are to the power of 0, we know that it is essentially 1*1

So:

(3x - 8)^0 (4x - 23)^0 = 1

7 0
3 years ago
There are 34 balls in a bucket. The balls are numbered from 1 to 34. One ball is randomly selected from the bucket. What is the
V125BC [204]

Answer:

1/34

Step-by-step explanation:

There is one 13 ball and there are 34 balls total.

1/34 is the answer. :)

4 0
3 years ago
Read 2 more answers
Juan pulled a red card from the deck of regular playing cards. This probability is 2652 or 12 . He puts the card back into the d
kenny6666 [7]

Answer:

no

Step-by-step explanation:

if he randomly pulls it out it's still the same number of red cards and also the total number of cards as always

can't change

6 0
2 years ago
Read 2 more answers
Joy bought 2 bath towels from a linen store, but returned 3 hand towels. Kay bought 3 bath towels and 3 hand towels. Joy's bill
nevsk [136]

Answer:

Bath towels: $10 Hand towels: $5

Step-by-step explanation:

If Joy bought two bath towels, that are $10 each that's $20 total; but she returned 3 hand towels that cost $5 and $15 total. 20-15=5

3 0
3 years ago
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