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aliya0001 [1]
3 years ago
9

Please help on two math questions. I don’t understand how to do them.

Mathematics
1 answer:
Sidana [21]3 years ago
3 0

When you represent intervals on the number line, you're including full dots, excluding empty dots, and you're considering numbers highlighted by the line.

In the first case, you've highlighted everything before -2 (full dot, thus included), and everything after 1 (empty dot, excluded). So, the set would be

x\leq -2 \lor\ x>1

or, in interval notation,

(-\infty,-2]\cup (1,\infty)

In the second case, you are looking for all numbers between -3 and 5. This interval is symmetric with respect to 1: you're considering all numbers that are at most 4 units away from 1, both to the left and to the right.

This means that the difference between your numbers at 1 must be at most 4, which is modelled by

|x-1|\leq 4

where the absolute values guarantees that you'll pick numbers to the left and to the right of 1.

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Answer the following questions using metric conversions.
nydimaria [60]

Answer:

Ok, here is the answers! brainliest pleaseee :D

Step-by-step explanation:

13. - 0.624 kg.   (Explanation: 104 grams per one pack of pop-tarts. 104 g x 6 packs of pop-tarts equal 624 grams in total. 624 grams to kilograms is 0.624 kg.)

14. - No. The tablecloth is 155 cm long. It needs to cover a table that is 1.6 meters long. 155 cm to meters is 1.55 meters. The tablecloth is 0.05 to short to cover the table. 1.6 meters - 1.55 meters = 0.005.

15 - Alex's sister rode the farthest. She rode 1,000 meters farther than Alex. 2 kilometers in meters is 2,000 meters. His sister rode 1,000 meters more than that, 3,000.

3 0
3 years ago
What is the distance between Points P(-2,1,3) and Points Q(-1,4,-2) to the nearest tenth?
Jobisdone [24]
4 is the right answer

8 0
3 years ago
Solve 3^x − 2 = 3^7<br><br> A. 2<br> B. 5<br> C. 7<br> D. 9
Vikki [24]

Answer:

C) 7

Step-by-step explanation:

3^x−2=2187

Step 1: Add 2 to both sides.

3^x−2+2=2187+2

3^x=2189

Step 2: Solve Exponent.

3^x=2189

log(3x)=log(2189)        <<Take log of both sides

x*(log(3))=log(2189)

x= log(2189)/log(3)

x=7.000832

4 0
3 years ago
Help me please find the area of the rectangle.recall that area=length . Width
Lelechka [254]

Answer:

1/35 sq. ft.

Step-by-step explanation:

Area = 3/35 x 1/3

= 1/35 sq. ft.

Hope it helps.

;)

8 0
2 years ago
Read 2 more answers
2. (-4) - 3- 1- 8<br><br> A) -10 <br><br> B)-16<br><br> C) -19 <br><br> D) -8
DedPeter [7]

Answer:

B) -16

Step-by-step explanation:

-4-3-1-8

subtract them all lol

7+9= 16

Then add the negative symbol

-16

7 0
3 years ago
Read 2 more answers
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