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alekssr [168]
3 years ago
9

True or false the values [x] and [-x] are always equal

Mathematics
1 answer:
RoseWind [281]3 years ago
4 0

Answer:

If you mean |x| and |-x| yes they are equal.

Step-by-step explanation:

Brackets do not exactly specify the meaning of absolute value.

On most keyboards, above the enter button on the main keyboard part (not the keypad one) there is a back slash symbol \ and if you hold shift, there might be another symbol | which more accurately represents absolute value,

If you aren't talking about the absolute value, then no.

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Mildred bought 2-cent stamps, 4-cent stamps, and 5-cent stamps for $4.35. The number of 2-cent stamps exceeded the number of 5 c
vfiekz [6]

5 cent = 0.05x

<span><span>2 cent  </span>= 0.02(x+50)</span>

4 cent = 0.04(2x-10)

 

0.05x + 0.02(x+50) + 0.04(2x-10)

0.05x + 0.02x +1 + 0.08x -0.4 = 4.35

0.15x +0.6 = 4.35

0.15x = 3.75

X = 3.75 / 0.15 = 25

<span> 25 5 cent stamps ( 25*0.05 = 1.25)</span>

25+50 = 75 2 cent stamps ( 75*0.02 = 1.50)

2*25 =50-10 = 40 4 cent stamps ( 40*0.04 =1.60)

 

1.25 + 1.50 +1.60 = 4.35

5 cent = 25

2 cent = 75

4 cent = 40


8 0
3 years ago
Complete the solution of the equation. Find the value of y when X equals 15. -X - 9y = 39
mrs_skeptik [129]
-15-9y=39
+15     +15
-9y/-9=54/-9
y=-6

6 0
3 years ago
The table below shows a proportional relationship. True or False?
lana66690 [7]

According to the image, the table shows a relationship that is not proportional. First of all, you cannot multiply a number by 0 and get something other than 0. Anything multiplied by 0 is always 0.

Second, the rule is different for each row.

2x5=10

4x4=16

6x3.6=22

A proportional relationship must increase by the same amount, and this does not, which means it is not proportional.

6 0
3 years ago
Find the missing number.<br><br><br>____ × 4 = 52
cupoosta [38]
13

Divide 52 by 4 which gives you 13. 13 x 4 = 52
6 0
3 years ago
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The bottom floor of a parking garage has an elevation of -36 feet. The top floor is 124 feet higher. What is the elevation of th
Reika [66]

Answer:

x-36=214

Step-by-step explanation:

If you already have the elevation of the bottom floor, you need to figure out how to get the top floor's elevation by taking 124 and 36 and adding them together. You will get 160. Then, take 160 and plug it in for x, leaving you with x-36=124 or 160-36=124. Hope this helps.

8 0
3 years ago
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