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REY [17]
3 years ago
14

Add to negative 20 and multiply to 21

Mathematics
1 answer:
likoan [24]3 years ago
7 0
-20+13=-7 ,  -7 multiplied by -3 equals 21
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Select all the equivalent to a^2/a^9 assume a doesnt equal 0
Alenkinab [10]
a ^ 2 / a ^ 9
 For this case what you should do is use the power properties to write the expression in different ways.
 Three different ways to write the expression are:
 Way 1:
 a ^ 2 / a ^ 9 = a ^ (2-9) = a ^ (- 7) = 1 / a ^ 7
 1 / a ^ 7
 Way 2:
 a ^ 2 / a ^ 9 = a ^ (2-9) = a ^ (- 7)
 a ^ (- 7)
 Way 3:
 a ^ 2 / a ^ 9 = a ^ 2 * a ^ (- 9)
 a ^ 2 * a ^ (- 9)
 Answer:
 
all the equivalent to a ^ 2 / a ^ 9 are:
 
1 / a ^ 7
 
a ^ (- 7)
 
a ^ 2 * a ^ (- 9)
6 0
3 years ago
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What does y = x mean and how do I solve it?​
timofeeve [1]

Answer:

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Step-by-step explanation:

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0.75x+0.8(x + 10) = 101

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3 years ago
Coach miller is having a cookout at the park for his baseball team. Coach bought 5.15 of ground beef to make burgers. The cost o
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4 years ago
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Use unit multipliers to convert 123 pounds per mile to ounces per centimeter. There are 5,280 feet in 1 mile. There are 16 ounce
gregori [183]
A unit multiplier is a conversion factor of value 1 that we can use to convert quantities.
We want to convert 123 pounds per mile to ounces per centimeter. 
First, we are going to express the quantity to convert as a fraction:
123 pounds per mile=123 \frac{pounds}{mile}

Next, we are going to find our multipliers:
- We know for our problem that there are 5,280 feet in 1 mile, so our first multiplier will be: \frac{1mile}{5280ft}
- We also know that there are 16 ounces in 1 pound, so our second multiplier will be: \frac{16ounces}{1pound}
- We know that there are 12 inches in 1 foot, so our third multiplier will be: \frac{1ft}{12in}
- We know that t<span>here are approximately 2.54 cm in 1 inch, so our fourth multiplier will be: </span>\frac{1in}{2.54cm}

Now we can put all our multipliers together:
123 \frac{pounds}{mile} * \frac{1mile}{5280ft}*\frac{16ounces}{1pound}* \frac{1ft}{12in}*\frac{1in}{2.54cm}=0.01 \frac{ounces}{cm}

We can conclude that the answer is 0.01
3 0
4 years ago
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