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DaniilM [7]
3 years ago
12

Please help me with this

Mathematics
1 answer:
inn [45]3 years ago
7 0
It's the first one and the last one need any more help let me know okay
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Which choice shows the result of substituting 3x – 5 into the second equation for y?
ahrayia [7]

Answer:  The answer is (B) 2x + 3(3x – 5) = 51 .

Step-by-step explanation:  We are given three options and we are to select which choice shows the result of substituting 3x – 5 into the second equation for y.

So, y = 3x - 5.

Since the standard form of a linear equation i two variables is ax + by = c, so the second equation as given in the options must be of the form 2x + 3y = 51.

If we substitute y = 3x - 5, then this equation becomes

2x + 3(3x - 5) = 51.

Thus, (B) 2x + 3(3x – 5) = 51  is the correct option.

5 0
3 years ago
Read 2 more answers
TVs are described by the length of their diagonals. The diagonal of a TV is
elena55 [62]

Answer:

32

Step-by-step explanation:

4 0
3 years ago
Write a quadratic function in standard form having zeros of -9 and -12
tia_tia [17]
(x + 9)(x + 12) = 0
Expanding the brackets, we get:
x^{2}+21x+108=0
3 0
3 years ago
There are 52 playing cards in a standard deck of cards. If Patrica selects a card at random, what is the probability that it wil
Alisiya [41]
Since there are two black queens out of 52 cards, there is a 2/52 chance of drawing a black queen first.  This is equivalent to a 1/26 chance.

Now that we have removed a black queen, there are 51 cards left in the deck.  26 of them are red because we only took away a black card.  This means that there is a 26/51 of drawing a red card next.

In order to find the probability of both of these happening, we multiply the two together.  1/26 * 26/51 = 26/1326.  This reduces to 1/51.  So, there is a 1/51 chance of drawing a black queen, then a red card.
8 0
3 years ago
6. Carrie buys 4.16 pounds of apples for $5.20.<br> How much does 1 pound cost?
spayn [35]
$1.25
Hope I helped !!
8 0
3 years ago
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