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Minchanka [31]
2 years ago
10

Solve the system by either substitution or elimination

Mathematics
1 answer:
kipiarov [429]2 years ago
6 0
The answer to the equation 3x-5y=21, 2x+y=1 is (2, -3)
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Which inequality represents all values of x for which the quotient below is<br> defined?
garri49 [273]

Answer:

Option B: x > 0

Step-by-step explanation:

Option A is wrong because \sqrt{3(0)}will be 0. So, the inequality can't be divided by 0.

Option C is wrong because 1 will suffice this inequality. \sqrt{7}/\sqrt{3}=1.5 (approx)

Option D is wrong because any value in the root has to be greater or equal to 0 (otherwise, it's imaginary number). -1 will give the latter root a value of root-(-3).

Leaving us with only option B, which is the right answer.

7 0
2 years ago
What is 40,023,032 in expanded form
Tanya [424]

40,023,032 = (4 x 1000000000) + (0 x 100000000) + (0 x 10000000) + (0 x 1000000) + (2 x 100000) + (3 x 10000) + (0 x 1000) + (0 x 100) + (3 x 10) + (2 x 1)

4 0
2 years ago
Nancy has to find the reflection of point A across the y-axis. In the graph, which point is the reflection of the point A across
Otrada [13]

Answer:

(2,4)

Quadrant 1

Good luck!

6 0
2 years ago
Read 2 more answers
The length of a rectangular deck is 4 times its width if the decks perimeter is 30 ft, what is the decks area
omeli [17]

Answer:

The area of the rectangular deck is 36 sq feet.

Step-by-step explanation:

Let the width of the deck  =  k ft

So, the length of the deck = (4k) ft

Now, perimeter = 30 ft

PERIMETER OF A RECTANGLE =  2(LENGTH + WIDTH)

⇒2( k + 4k)  = 30

or, 2 x 5k = 30   ⇒  10k = 30

⇒ k = 30/10 = 3

So, the width of the deck = k  = 3 ft

Length of the deck = 4k = 3 x 4  = 12 ft

Now, AREA OF A RECTANGLE =  LENGTH X WIDTH

So, the area of the rectangular deck = 3 ft x 12 ft

                                                             = 36 sq feet

Hence, the area of the rectangular deck is 36 sq feet.

8 0
2 years ago
I know one of the answers is 25, please help me find the other!
Nadusha1986 [10]

Answer:

five to the second power.

6 0
2 years ago
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