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Ganezh [65]
3 years ago
12

What is the solution to the inequality? −4x−8>−20

Mathematics
1 answer:
Sliva [168]3 years ago
4 0
<span>−4x−8>−20
Add 8 to both sides
-4x>-12
Divide both sides by -4
Final Answer: x<3</span>
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How much water must be evaporated from 130 gallons of a 9% acid solution to make a 12% acid solution?
Bad White [126]

Answer: 33 gallons

Step-by-step explanation:

We initially have 130 gallons of a 9\% acid solution and we need to change it to a 12\% acid solution, and for that it is necessary to evaporate n gallons of water.

So, this situation can be mathemtically expressed as follows:

(130)(9\%)=(130-n)(12\%)

Then:

(130)(\frac{9}{100})=(130-n)(1\frac{12}{100})

Isolating n:

11.7=15.6-0.12 n

n=32.5 \approx 33

Hence, we need to evaporate 33 gallons of water.

6 0
3 years ago
Can someone help me asap
stealth61 [152]

Answer:

Option Y is correct.

Step-by-step explanation:

We are given the table representing the relation between new students and returning students for difference classes.

It is required to form the relative frequency table for the given situation.

So, relative frequency table is obtained by dividing the valued by the total number of values in the data set.

<em>Thus, we will get the relative frequency table by dividing the given table values by 500.</em>

Hence, we will get the following table,

                          New Students               Returning Students           Total

10th                         0.01                                   0.34                             0.35

11th                          0.006                                0.324                           0.33

12th                         0.004                                0.316                            0.32

Total                        0.02                                  0.98                                1

Thus, option Y is correct.

4 0
3 years ago
PLS HELP ME ASAP FOR 10 and 11 (SHOW WORK!!) + LOTS OF POINTS!!
hoa [83]
17>n because 17 is more than n
3 0
3 years ago
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Find the x-intercepts for the ellipse x^2/25+y^2/16=1
Kay [80]
A²=25  then a = + 5 & a =-5, so this ellipse intercepts the x axis at the points +5 & -5
8 0
3 years ago
A collection of quarters and nickels contains at least 42 coins and is worth at most $8.00. If the collection contains 25 quarte
Elenna [48]

Answer:

17

35

Step-by-step explanation:

9 0
3 years ago
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