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melisa1 [442]
3 years ago
14

Pls help i thought i understood it but it was incorrect the first time

Mathematics
1 answer:
Elina [12.6K]3 years ago
3 0
<h3>Answer: Choice D</h3>

Subtraction property of equality

====================================================

Reason:

We subtract 18 from both sides to go from 4x+18 = 78 to 4x = 60

So we use the aptly named subtraction property of equality.

In general that rule is if a = b, then a-c = b-c

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What is the mean of the following numbers? 10,39,71,39,76,38,25<br><br>​
Iteru [2.4K]

Answer:

42.57

Step-by-step explanation:

10+39+71+39+76+38+25=298

298/7=42.57

8 0
3 years ago
Find the 5 number summary for the data shown x 3.1 10.2 12 12.1 12.2 15.3 27.9 30
Kazeer [188]

Answer:

  Min.     1st Qu.    Median      Mean       3rd Qu.        Max.  

  3.10     11.55       12.15        15.35        18.45         30.00

Step-by-step explanation:

The five-number summary includes five things that are:

1. Minimum Value

2. First Quartile (Q₁)

3. Median

4. Third Quartile (Q₃)

5. Maximum Value

So,  

1. Minimum Value = 3.10

It can be found by arranging the data in ascending order, the first value we will get is the minimum value.

2. First Quartile is the middle value between Minimum value and Median of data after arranging data in ascending order.

First Quartile (Q₁) = 11.55

3. Median is the middle value of the data after arranging them in ascending order.  

Median = 12.15

4. The third Quartile is the middle value between Median and Maximum Value of data after arranging data in ascending order.

Third Quartile (Q₃) = 18.45

5. Maximum Value is the largest value of the data or is the last value after arranging the data in ascending order.

Maximum Value = 30.

Percentiles are mostly use in very large data. Here n percent of data shows the nth percentile.

5 0
4 years ago
Tres mineros,A,B,C.con cargas de 40,50 y 90 kg, respectivamente , se disponen a cruzar el rio. Se sabe que el bote solo puede tr
Veseljchak [2.6K]
10 y porque estas copiando
6 0
3 years ago
PLEASE HELP I WILL NAME YOU BRAINLIEST IF YOU ANSWER CORRECTLY PLEASE HLP THIS TEST IS SOOO IMPORTANT!!!
aleksandrvk [35]

Answer:

c

Step-by-step explanation:

ive done this before and passed

8 0
3 years ago
Read 2 more answers
The surface areas of two similar figures are 25 in2 and 36 in2. If the volume of the smaller figure is 250 in3, what is the volu
Slav-nsk [51]
Since the figures are similar, we can establish a rule of three as follows.
We know that the area of the smaller figure is 25in^{2}, and its volume is 250in^{3}. We also know that the area of the larger figure is 36in^{2}; since we don't now its volume, lets represent it with X:
\frac{25in^{2}----\ \textgreater \ 250in^{3}}{36in^{2}----\ \textgreater \ Xin^{3}} 
\frac{25}{36} = \frac{250}{X}
X= \frac{(250)(36)}{25}
X=360

We can conclude that the volume of the larger figure is 360in^{3}; therefore, the correct answer is a.
6 0
3 years ago
Read 2 more answers
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