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Archy [21]
3 years ago
6

I'd appreciate the right answer​

Mathematics
1 answer:
shutvik [7]3 years ago
8 0

Answer:

No.

If y is greater than 3, it is not a solution to the system of inequalities. (7,5) has a y value of 5, therefore it is is not a solution.

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6x squared plus 12x plus 13 equals 2x squared plus 4
Andrews [41]
12x^2+12x+3=2x^2+4\\\\12x^2-2x^2+12x+3-4=0\\\\10x^2+12x-1=0\\\\a=10;\ b=12;\ c=-1\\\\\Delta=12^2-4\cdot10\cdot(-1)=144+40=184\\\\x_1=\frac{-b-\sqrt\Delta}{2a};\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{184}=\sqrt{4\cdot46}=2\sqrt{46}\\\\x_1=\frac{-12-2\sqrt{46}}{2\cdot10}=\frac{-6-\sqrt{46}}{10};\ x_2=\frac{-12+2\sqrt{46}}{2\cdot10}=\frac{-6+\sqrt{46}}{10}
6 0
3 years ago
That's not an answer for me
Alik [6]

Answer:

so you need a answer or a question

3 0
3 years ago
Read 2 more answers
The triangles are similar.
RSB [31]

Answer:

The value of x is 12.

Step-by-step explanation:

In order to find the value of x, we first need to find the scale factor. We can find this by dividing any side of the larger triangle with the corresponding part of the smaller triangle.

28/7 = 4

This means everything in the larger triangle is 4 times as great as the smaller triangle. Knowing this, we can set the larger hypotenuse equal to 4 times the smaller.

6x + 28 = 4(25)

6x + 28 = 100

6x = 72

x = 12

8 0
3 years ago
In a memory​ experiment, Alice is able to memorize words at a rate given by m '(t)= - 0.009t^2 + 0.6t. In the same memory​ exper
White raven [17]

Answer:

1) Ben, 2) \Delta = 2, 3) \dot m = 2.7, 4) \dot M = 2.9

Step-by-step explanation:

1) Ben has a higher rate of memorization, since the coefficient of the second power is lesser than the one from Alice.

2) The number of words can be estimated by integrating the function:

Alice

\Delta m = -0.003\cdot (10\,min)^{3} + 0.3\cdot (10\,min)^{2}

\Delta m = 27

Ben

\Delta M = -0.001\cdot (10\,min)^{3} + 0.3\cdot (10\,min)^{2}

\Delta M = 29

\Delta = \Delta M - \Delta m

\Delta = 2

3) The average amount of words per minute is:

\dot m = \frac{27}{10}

\dot m = 2.7

4) The average amount of words per minute is:

\dot M = \frac{29}{10}

\dot M = 2.9

4 0
3 years ago
a discounted concert ticket cost $14.50 less than the original price P. You pay $53 for a discounted ticket. Right and solve an
mihalych1998 [28]

\text{Hello there!}\\\text{In this question, we're making an equation to find the original price}\\\\\text{We know that:}\\\\\text{Discounted ticket cost \$14.50 less}\\\\\text{You paid \$53 for the discounted ticket}\\\\\text{Equation:}\\\\\text{c=cost; p = price}\\\\c = p - 14.5\\\\\text{Plug 53 to c}\\\\53 = p - 14.5\\\\\text{Solve:}\\\\53 = p -14.5 \\\\\text{Add 14.5 to both sides}\\\\67.5 = p\\

\text{Original price is \$67.50}

7 0
3 years ago
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