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tensa zangetsu [6.8K]
3 years ago
15

Expand and simplify (x-5)(x+5)

Mathematics
1 answer:
BigorU [14]3 years ago
4 0
The answer is X^2 - 25 click on the box for more details or explain.

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Please help asap ty just for numbers 29 31 and 32
Allisa [31]

Answer:

105, D, 13,9899/138530? not sure on that one

5 0
3 years ago
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Solve 15 ≥ -3x or 2/5x ≥ -2. <br><br> A.) {x | x ≤ -5}<br> B.) {x | x ≥ -5}<br> C.) {all reals}
Lapatulllka [165]
15 \geq -3x\quad|:(-3)\qquad\vee\qquad  \dfrac{2}{5}x \geq -2\quad|\cdot5\\\\\\&#10;-5 \leq x\qquad\vee\qquad  2x \geq -10\quad|:2\\\\\\&#10;-5 \leq x\qquad\vee\qquad  x \geq -5\\\\\\x\geq -5\qquad\implies\qquad\boxed{\{x | x \geq -5\}}

Answer B.
6 0
3 years ago
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what is the difference between teh largest prime number less than 50 and the smalest composite number grater than 10
Slav-nsk [51]

Answer:

The answer is 35.

Step-by-step explanation:

Prime numbers that are less than 50 are --> 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

The largest prime number in here that is less than 50 is 47, right?

Lastly, the smallest composite number which is greater than 10 is what? It is 12, okay?

So, 47 - 12 = 35

6 0
2 years ago
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The jars of peanut butter that I buy cost $7.20 each and normally contain 500 grams. At present, however, each jar contains an e
Alex_Xolod [135]

Answer:

$0.54

Step-by-step explanation:

Given:

The jars of peanut butter that I buy cost $7.20 each and normally contain 500 grams.

At present, however, each jar contains an extra 20% free.

And additionally, the supermarket has a "buy 3 jars get another one free''.

Question asked:

By how much is the cost per 100 grams of peanut butter less than it normally is if I take full advantage of the supermarket's offer today?

Solution:

Cost of a jars of peanut = $7.20

Normally, weight of peanut butter in one packet = 500 gram

At supermarket offer, each jar contains an extra 20% free, means a packet  of peanut butter contains = 500 + 20% of 500                                                                                                            =500+500\times \frac{20}{100} =500+100=600\ gram

And extra benefit = buy 3 jars get another one free, means we will get 4 jars by just giving price of only 3 jars.

That means, total weight of peanut butter you are getting by giving 3 packet's price =  Each jar weigh \times number of jars

                       = 600 \times 4 = 2400 gram

<u>Cost of each packet will be same as previously as during the offer;</u> $7.20

Cost of 3 packet's peanut (2400 gram) =  7.20\times3=\$21.6

Now, we will calculate cost per 100 grams of peanut butter :

<u>During offer:</u>

Cost of 2400 grams of peanut butter = $21.6

Cost of 1 gram of peanut butter = \frac{21.6}{2400}

Cost of 100 gram of peanut butter = \frac{21.6}{2400}\times100=\frac{2160}{2400} =\$0.9

<u>Normal day:</u>

Cost of 500 grams of peanut butter = $7.20

Cost of 1 gram of peanut butter = \frac{7.20}{500}

Cost of 100 gram of peanut butter = \frac{7.20}{500}\times100=\frac{720}{500} =\$1.44

We found that cost of 100 gram of peanut butter in normal day is $1.44 while cost of 100 gram of peanut butter during offer is $0.9 means cost per 100 gram during offer is ($1.44 - $0.9 = )$0.54 less than cost during normal day.

<u>Conclusion:</u>

Therefore, cost per 100 grams of peanut butter is $0.54 less than it is normally if you take full advantage of the supermarket's offer today.

             

7 0
3 years ago
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It is negative six because down three is -3 so 3+3 =6 but the numbers are negative so the answer is -6
7 0
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