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dalvyx [7]
3 years ago
8

can someone fill in the blanks for me I'm doing a vocab test on math so plz help thx brainliest awarded

Mathematics
2 answers:
777dan777 [17]3 years ago
8 0

Answer:

15 - Given a system of two equations, we can produce an equivalent system by replacing one equation by the sum of the two equations, or by replacing an equation by a multiple of itself.

16 - It tells us that two expressions mean the same thing, or represent the same number. An equation can contain variables and constants.

17 - Commutative Properties

Step-by-step explanation:

irga5000 [103]3 years ago
5 0

Answer:

i gotchu babe lol,

14.Associative Property

15. equivalent systems

16. equation

17.Commutative Property

Step-by-step explanation:

i love you so much, i hope this helps you babe.

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Ja'kniya and Alayjah are shopping at the Apple Store. Ja'kniya bought 4 screensavers and 3 Otterboxes for $29. Alayjah bought 6
Katarina [22]

Answer:  Each screensaver costs $2 and each Otterbox costs $7.

Step-by-step explanation:

Let x = Cost of each screensaver and y = cost of each Otterbox.

As per given, 4x+3y=29       (i)

6x +2y = 26  (ii)

Divide both sides of (i) by 2 and the multiply it by 3 on sides , we get

9x+3y=39    (iii)

Eliminate (i) from (iii) , we get

5x = 10

⇒ x = 2  [Divide both sides by 5]

Put value of x in (i), we get

4(2)+3y=29

⇒ 8+3y= 29

⇒ 3y= 21

⇒ y =7 [Divide both sides by 7]

Hence, Each screensaver costs $2 and each Otterbox costs $7.

7 0
3 years ago
The top of a ladder rests at a height of 15 feet against the side of a house. If the base of the ladder is 6 feet from the house
Ksju [112]
90
15 x 6 = 90
You need to multiply
6 0
3 years ago
Read 2 more answers
Find the mean, median, and mode for the data set. Round answers to the nearest tenth if necessary
pentagon [3]
Please type out the data set and share it here.

Median:  arrange the data in ascending order.  If the number of data points is odd, then take the center data point as your median.

Mean:  add up the data and divide your sum by the number of data points.

Show us what you've got.  Then we can finish responding to these questions. 
5 0
3 years ago
4 hours a week for a month. how many hours you have
love history [14]
7 days a week

4x7=28

About 4 weeks each month

28x4=112

The answer should be 112 hours. I hope this helped
7 0
3 years ago
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The probability of flipping a coin and noting Heads is 50%. If you flip the coin 100 times, what is the standard deviation of He
BaLLatris [955]

Answer: 5.000

Step-by-step explanation:

The formula to find the standard deviation for binomial distribution is given by :-

\sigma=\sqrt{np(1-p)}, where p is the probability of getting success in each trial and n is the number of trials.

Given : The probability of flipping a coin and noting Heads is = 0.50

The total number of trials = 100

Then , the standard deviation of Heads to be noted will be :-

\sigma=\sqrt{100(0.50)(0.50)}=5.000

Hence, the standard deviation of Heads to be noted = 5.000

5 0
3 years ago
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