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Sergio [31]
3 years ago
8

What is 19 x 3.564239

Mathematics
2 answers:
Phoenix [80]3 years ago
5 0
67.720541 multiply 19 by 3.564239
SSSSS [86.1K]3 years ago
5 0
19 x 3.564239=67.720541

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A group of students takes a test and the average score is 72. One more student takes the test and receives a score of 88 increas
Stells [14]

Answer:

3 student.

Step-by-step explanation:

From the first statement:

Let the total score be T

Let the total number of student be x

The average of the score = 72

Average = Tota score / number of student

72 = T/x

Cross multiply

T = 72x ..... (1)

Second statement:

One more student took the test and the average becomes 76 with the student having a score of 88.

Therefore,

Overall score = T + 88

Total student = x + 1

Average = 76

Average = overall score / total number of student

76 = (T + 88) /(x + 1)

Cross multiply

76(x + 1) = T + 88

Clear bracket

76x + 76 = T + 88

From equation 1

T = 72x

76x + 76 = 72x + 88

Collect like terms

76x – 72x = 88 – 76

4x = 12

Divide both side by the coefficient of x i.e 4

x = 12/4

x = 3

Therefore, the initial number of the student were 3.

4 0
3 years ago
Which statements are true about the graph of y s 3x + 1 and y = -x + 2? Check all that apply.
m_a_m_a [10]

Answer:

correct answers bc and d just did it

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
An exercise machine with an original selling price of $1,275 is marked down by 20%. What is the sale price of the exercise machi
krek1111 [17]

Answer:

1,020

Step-by-step explanation:

If it is marked down by 20%, then 80% is left. What is 80% of 1275 you ask? .8*1275=1020!

5 0
3 years ago
Find the sum of the first 10 terms 0.5,0.9,1.3,1.7,..
IRINA_888 [86]

Answer:

0.5, 0.9, 1.3, 1.7, 2.1, 2.5, 2.9, 3.3, 3.7, 4.1

Now you can add them all

which is equal to 23

Step-by-step explanation:

8 0
2 years ago
Vertical, Complementary and Linear Pair Angles help me please
Mariana [72]
I saw this same type of question and page but with different numbers just 5 minutes ago...

Anyway here’s the answers:
1) Complementary
3x+1+44=90
3x+45=90
3x=45
x=5
2) Vertical
Ignore everything about the work. The answer is 120 degrees because they’re vertical angles.
3) Supplementary
15x-5+110=180
15x+105=180
15x=75
x=5
And I can’t see the last question clearly
5 0
3 years ago
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