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spayn [35]
3 years ago
7

Sofia owes her brother $25. She gives her brother the $18 she earned dog-sitting. Write an addition expression to describe this

situation. Then find the sum and explain its meaning.
Mathematics
1 answer:
ValentinkaMS [17]3 years ago
3 0

Answer:

She owes her brother $7.

Step-by-step explanation:

Subtract $18 made from dogsitting from the total (which is $25).

addition expression : $18 + x =$25

                      check :  $25 - $18 = $7

$7 is what she needs to finish paying back.  

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Find each value of the five-number summary for this set of data. [Note: Type your answers as numbers. Do not round.] 46, 19, 38,
frozen [14]

Answer:

Maximum : 51

Minimum: 12

Median: 38

Lower quartile: 19

Upper quartile: 46

Step-by-step explanation:

To answer this question, we first order the data from largest to smallest:

46, 19, 38, 27, 12, 38, 51

12, 19, 27, 38, 38, 46, 51

It can be seen that the maximum value is:

51

The minimum value is

12

Let's call N the amount of data.

To calculate the quartiles we use the following formula:

Q_1 = X_{\frac{1}{4}(N + 1)}

So:

Q_1 = X_{\frac{1}{4}(7 + 1)}

Q_1 = X_2

Where X_2 is the data number 2.

Q1 = 19

As the number of data is imapar, then, the median is the central data:

12, 19, 27, {38}, 38, 46, 51

Median = 38

Finally:

Q_3 = X_ {\frac{3}{4}(n + 1)}\\\\Q_3 = X_ {6}

Where X_6 represents the data number 6

Q_3 = 46

4 0
3 years ago
I need quick help pls!!<br><br> by reason: AAA or ASA, SAA or Cannot be determined or SAS or SSS
Ray Of Light [21]

Answer:

  ΔDCE by ASA

Step-by-step explanation:

The marks on the diagram show AE ≅ DE. We know vertical angles AEB and DEC are congruent, and we know alternate interior angles BAE and CDE are congruent. The congruent angles we have identified are on either end of the congruent segment, so the ASA theorem applies.

Matching corresponding vertices, we can declare ΔABE ≅ ΔDCE.

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fenix001 [56]
√120 ≈ 10.95
and 10.95²≈ 120 
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If the club is sending 3 members to a convention, how many different groups of 3 members are possible?
Natasha2012 [34]
There are 120 different possible groups.
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8

Step-by-step explanation:

The domain is from the points (-4,0) through (4,0).

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3 years ago
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