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Musya8 [376]
2 years ago
7

A) 3= x + 7 b) -7a-49

Mathematics
2 answers:
xxTIMURxx [149]2 years ago
8 0

Answer:

A: x = -4

B: a = -7 (I'm assuming the '-' in front of 49 was supposed to be an '=')

Step-by-step explanation:

A: You need to group the like terms together, and isolate the variable, which in this case is x.

Take the 7 over to the other side, so the equation looks a little bit like this.

3-7 = x.

3-7 is -4, so we've gotten our answer.

x = -4.

B: -7a = 49.

When two negative numbers are multiplied together, the product becomes positive.

49 is 7x7.

-7 times -7 would be 49.

So, in this situation, a would be -7.

a = -7.

mars1129 [50]2 years ago
3 0

Answer: b im pretty sure hope this helps :)

Step-by-step explanation:

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Marcella bought a 300 pack of candied chocolates. she randomly picked out 30 candies. the results
klemol [59]

Answer:

there are 75 colors of each candy

Step-by-step explanation:

300÷4=75

8 0
1 year ago
Two angles of a triangle measure 22 and 53 what is the measure of the third angle
Musya8 [376]
The third angle is 105.
How do I know this?
Add 22 and 53:
22 + 53 = 75
All interior angles on a triangle should add up to 180.
Subtract 75 from 180:
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105 is our answer.
Hope this helps! =)
3 0
3 years ago
The first week they drank 2 gallons 1quart and 1cup. The second week the drank 3 gallons how much more cups of milk did they dri
stellarik [79]

Answer:

11 cups

Step-by-step explanation:

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and there is 4 cups in a quart

the first week there was 37 cups of milk or 2 gallons 1 quart and 1 cup

the second week there was 11 more cups drinking making a total of 48 cups

4 0
3 years ago
The human eye contains approximately 9.1 x 10^7 rod cells and 4.5 x 10^6 cone cells . Samuel subtracts 9.1-4.5 and says there ar
Paul [167]

Samuel is incorrect because he didn't subtract the power of the numbers.

<h3>How many more rod cells are there?</h3>

The number of rod and cone cells in the human eye is written in scientific notation. Scientific notation is used in expressing large numbers in smaller numbers. To write a number in scientific notation, the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10. For example, 1 x 10² is equivalent to 100

(9.1 x 10^7) - (4.5 x 10^6)

= (9.1 - 4.5) x 10^(7 - 6)

4.6 x 10 = 46

To learn more about scientific notation, please check: brainly.com/question/25334755

#SPJ1

6 0
1 year ago
Which type of data would be most appropriate to collect to indicate student performance that is not related to tests?
mamaluj [8]
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