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Gnesinka [82]
3 years ago
14

Can you please help me please?

Mathematics
1 answer:
VashaNatasha [74]3 years ago
7 0

Answer:

K= -6

Step-by-step explanation:

-12 divided by 2. Hope this helps.

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Which expression is equal to 8?<br> A. 25-22<br> B. 25.22<br> C. 8-3.82<br> D. 83.82
SpyIntel [72]

Answer:

D I guess is the answer for the question

7 0
3 years ago
3. A wall is 12 feet high. If its area is 132 sq ft, what is its
dalvyx [7]

B. 46 feet because 132/12=11 and 12+12+11+11=46

5 0
3 years ago
The sum of Two numbers is 9. The<br> sum of the squares of the numbers is<br> 41. Find the numbers.
Tju [1.3M]

Answer:

4 and 5

Step-by-step explanation:

Assuming your 2nd sentence should be: "The sum of the squares of the two numbers is 41"

X + Y = 9   {equation 1}

X² + Y² = 41  {equation 2}

from equation 1:  y = 9-x

Substitute that into equation 2

x² + (9-x)² = 41

x² + 81 - 18x + x²= 41

2x² - 18x + 40 = 0

We can factor out a 2

x² - 9x + 20 = 0

(x-5)(x-4) = 0

x = 5 or 4

checking

Your two numbers are 4 and 5

4² + 5² 

= 16 + 25

= 41

3 0
3 years ago
If A ⊂ B, then A ∩ B = A ∪ B. always sometimes or never
Lisa [10]

Sometimes. Proof:

Assume A\subset B.

Let a\in A\cap B, so that a\in A and a\in B. Then of course a\in A\cup B, so A\cap B\subseteq A\cup B.

Now let a\in A\cup B, so that a\in A *or* a\in B. Since A\subset B, if a\in A then a\in B, so that a\in A\cap B. But if a\in B, then a\not\in A, so it's not always the case that a\in A\cap B, and therefore in general A\cup B\not\subseteq A\cap B.

6 0
3 years ago
Please answer this question.as fast as you can.
viktelen [127]

Answer:

first

Step-by-step explanation:

first -3<x<1

hehgdudkdhduf

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3 years ago
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