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bulgar [2K]
3 years ago
9

What is the average of -30 -15 -20 55

Mathematics
2 answers:
defon3 years ago
8 0

Answer:

-2.5

Step-by-step explanation:

-30 + (-15) + (-20) + 55 = -10. Then you divide it by how many numbers there are (4). Which equals - 2.5. If this is wrong, then round up to -3.

IRINA_888 [86]3 years ago
6 0

Answer:

{ \tt{ =  \frac{ (- 30) + ( - 15) + ( - 20) + 55}{4} }} \\  \\  = { \tt{ \frac{ - 10}{4} }} \\  \\  = { \tt{ -  \frac{5}{2} }}

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Answer:

The statement that is not true is;

c) m∠ABO = m∠ODC

Step-by-step explanation:

With the assumption that the lengths AO, and OD are equal, we have that in ΔABO and ΔOCD, the following sides are corresponding sides;

Segment AO on ΔABO is a corresponding side to segment OD on ΔOCD

Vertices B and C on ΔABO and ΔOCD are corresponding vertices

Therefore;

Segments AB and OB on ΔABO are corresponding sides to segments OC and OD on ΔOCD respectively

Therefore, ∠ABO on ΔABO is the corresponding angle to ∠OCD on ΔOCD

Given that ΔABO ≅ ΔOCD, we have that ∠ABO ≅ ∠OCD

Therefore;

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5 0
3 years ago
16. a. Melissa earned $112.80 for working an 8 hour shift at the Apple Store. What is her hourly rate of pay?
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4 0
3 years ago
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What are the coordinates of the point (-1,9) after a clockwise rotation of 90 degree about the origin
Elina [12.6K]

The rule for clockwise rotation of 90 degrees about the origin is (-y, x).

So (-1,9) would now be (-9,1).

Hope this Helps!!

7 0
3 years ago
Halle has 10 times as many pages to read for her homework assignment as Janet altogether they have to read 264 pages how many pa
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ATQ

\\ \sf\longmapsto 1800x+10=0.08x

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\\ \sf\longmapsto x(1800-0.08)=-10

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6 0
3 years ago
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