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ira [324]
3 years ago
5

Urgent please!!! I really don’t understand it, tysm to anyone who can answer thissss :))))

Mathematics
1 answer:
Vikki [24]3 years ago
6 0

Answer:

  • (ax + by + cz)/(a + b + c)

Step-by-step explanation:

  • Average = Sum / Number

<u>In terms of the scores we calculate the sum as:</u>

  • ax + by + cz

<u>The number is the sum of the frequencies:</u>

  • a + b + c

<u>Mean average score is:</u>

  • (ax + by + cz)/(a + b + c)
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Xavier climbs 9 feet up into an apple tree. What integer represents the direction and how far he will climb to get back down to
natima [27]

Answer:

-9

Step-by-step explanation:

We are told in the question that:

Xavier climbs 9 feet up into an apple tree.

The direction symbol or sign for upwards movement = Positive (+) sign

If Xavier would climb back down , he will climb back down 9 feet as well

The direction symbol or sign for downwards movement = Negative (-) sign

Since we know the distance (or how far) he has to climb by downwards is also 9 feet, therefore, the integer that represents the direction and how far he will climb to get back down to the ground is -9

7 0
3 years ago
Evaluate 18-T, if T=4
vampirchik [111]

Answer:

14

Step-by-step explanation:

18-4

5 0
3 years ago
Read 2 more answers
State the number of real solutions for x^2 + 12 = -6x
Papessa [141]
No real solution
you must take the square root of a -3 which gives you an imaginary number
7 0
3 years ago
18.
skad [1K]

9514 1404 393

Answer:

  a) 10(3x+2) ≤ 140; x ≤ 4

  b) no

Step-by-step explanation:

a) The area is the product of length and width. We want that product to be no greater than 140:

  10(3x +2) ≤ 140 . . . . your inequality

We can solve this by dividing by 10 first.

  3x +2 ≤ 14

  3x ≤ 12 . . . . . . subtract 2

  x ≤ 4 . . . . . . . . divide by 3; the solution to the inequality

__

b) If the length were 15, the area would be 10×15 = 150, which is greater than 140. The length cannot be 15 if the area is at most 140.

6 0
3 years ago
Given: measure 1, measure 2, measure 3, and measure 4 formed by two intersecting segments Prove: measure 1 and measure 3 are con
lesantik [10]

Step-by-step explanation:

<h3><u>Note</u>: </h3>

The text below that are formatted in bold and underlined font are the solutions to the missing boxes in your given problem.  

<h3><u>Explanation:</u></h3>

Given that ∠1, ∠2, ∠3, and ∠4 are formed by two intersecting segments, and that:

∠1 and  ∠2 form a linear pair  

∠2 and ∠3 form a linear pair  

These linear pair relationships suggest that by the Linear Pair Postulate:

<u>∠1 and ∠2 are supplementary</u>.    ⇒  Linear Pair Postulate

<u>∠2 and ∠3 are supplementary</u>.    ⇒  Linear Pair Postulate

m∠2 + m∠ 3 = 180°  ⇒  <u>Definition of supplementary angles</u>.

<u>m∠1 + m∠3  = m∠2 + m∠ 3</u>  ⇒  Substitution Property of Equality.          

m∠1  =  m∠3   ⇒  <u>Subtraction Property of Equality</u>.  

4 0
3 years ago
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