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4 years ago

Which question is equivalent to2(x+7)-18+4/5

Mathematics

2 answers:

Paraphin [41]4 years ago

5 0

Answer:

$2x-16/5$

Step-by-step explanation:

$2x+14-18+0.8$

$2x-3.2$

Airida [17]4 years ago

4 0

Answer:

2x + 16/5

Step-by-step explanation:

= 2x + 14 - `18 + 4/5

= 2x + 4 + 4/5

= 2x + 16/5

Hope this helps!

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3 years ago

In a psychology class, 44 students have a mean score of 96.6 on a test. Then 13 more students take the test and their mean score

NikAS [45]

Answer: 89.7

Step-by-step explanation:

The mean of a data set is the average of all the information given. Therefore, the total combined score is the number of students multiplied by the mean

The total score of the first 44 students: 96.6*44 = 4250.4

The total score of the later 13 students: 66.3*13 = 861.9

(4250.4 + 861.9)/(44 + 13) = 89.7

Hope this helped

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2 years ago

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4 years ago

What is the missing number in this pattern? 1, 4, 9, 16, 25, 36, 49, 64, 81,

Musya8 [376]

Answer:

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Step-by-step explanation:

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4 years ago

What is the slope of the line that passes through the points (5,9)and (-3,9).

Romashka [77]

Answer:

$\displaystyle m=0$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (5, 9)

Point (-3, 9)

Step 2: Identify

x₁ = 5, y = 9

x₂ = -3. y = 9

Step 3: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m=\frac{9-9}{-3-5}$
[Slope] [Fraction] Subtract: $\displaystyle m=\frac{0}{-8}$
[Slope] [Fraction] Divide: $\displaystyle m=0$

3 0

3 years ago