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monitta
3 years ago
6

Please help me solve this. :)​

Mathematics
1 answer:
Aloiza [94]3 years ago
6 0

Answer:

40

Step-by-step explanation:

   Given problem:

            x² - y²

x+ y = 10

x - y = 4

Solution:

Using the concept of differences of two squares;

      x² - y² = (x + y)(x - y)

                 

So;

      x² - y²  = 10 x 4 = 40

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Hope this helps!

7 0
4 years ago
What is x if 4x-79=3x-29
elena-14-01-66 [18.8K]
<em>4x-79=3x-29</em>

<em>Move the terms with "x" on the left, and the numbers on the right.</em>

<em>4x-3x=79-29</em>
<em>x=50</em>
6 0
3 years ago
Read 2 more answers
I need help on all of them T-T (I'm bad at math)
Sav [38]

Answer:

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Step-by-step explanation:

3 0
2 years ago
Research results showed that experimental Drug R had a minimal to modest effect in reducing the symptoms of generalized anxiety
Angelina_Jolie [31]

Answer:

The variable that may change in response to the increase of the drug is the GAD symptoms by a 37,5%.

Step-by-step explanation:

According to the results of the first experiment with a mass of 200 mg of Drug R, they obtain a reduced of the GAD symptoms by a 25 percent evidenced by the Hamilton Anxiety Scale.

If they decided to increase the mass of Drug R to 300 mg the results expected are a increase of the porcentange of the reduced symptoms of generalized anxiety disorder, according to the tendence of the first hypothesis and the Hamilton Anxiety Scale.

We can express this increase by using the three simple rule. Where if 200 mg of Drug R reduced the 25% of the GAD symptoms, if we increase to 300 mg of Drug R how much porcentage this amount will be reduced.

Doing the maths 300mg × 25%=7500mg%,

    ⇒ 7500mg% ÷ 200mg = 37,5%.

<u>In conclusion</u> if they increased the mas of Drug R to 300 mg they will be reduced the generalized anxiety disorder (GAD) to a 37,5%.

3 0
4 years ago
the number of pages in the US tax code exceeds the number of pages in The Bible by 18528 the combined number of pages in the tax
Pani-rosa [81]
Tax code- Bible = 18528
tax code + Bible = 21472

add the two together to get
2* tax code = 18528 + 21472
tax code = 20000
7 0
3 years ago
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