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Masja [62]
3 years ago
15

I don't know how to do this can you help me please?

Mathematics
1 answer:
DIA [1.3K]3 years ago
5 0

Answer:

Key characteristics include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity.

Step-by-step explanation:

I don't really know how to help on this but I hope of you know what key characteristics are you'll understand what to dom

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Solve for x and y in the system of equation<br>3x²+4y=17 <br>2x²+5y=2<br>I'll mark brainliest​
Novay_Z [31]

Answer:

x=\pm \sqrt{11} \\y=-4.

Step-by-step explanation:

\left \{ {{3x^2+4y=17} \atop {2x^2+5y=2}} \right. \\\\Then\\\\\left \{ {{2 \times (3x^2+4y)=2 \times 17} \atop {3\times(2x^2+5y)=3\times2}} \right. \\\\\left \{ {{6x^2+8y=34 \quad (1)} \atop {6x^2+15y=6\quad (2)}} \right.\\\\(1)-(2) \Rightarrow -7y=28 \Rightarrow y =-4.\\Since \: \:  2x^2+5y=2 \Rightarrow 2x^2=2-5y\\\Rightarrow 2x^2=2+20=22\\\Rightarrow x^2=22:2=11\\\Rightarrow x=\pm \sqrt{11}.

7 0
3 years ago
The area of a rectangular fountain is (x^2 + 12x +20) feet squared. The width is (x + 2) feet.
n200080 [17]
Part A:
The total area = x² + 12x + 20 = (x+2)(x+10)
<span>The width = x+2
∴ Length = area / width = </span>[ <span>(x+2)(x+10) ] / (x+2) = x+10

Part B: </span>
<span>A 2-foot walkway is built around the fountain
</span>
<span>∴ The width = (x+2) + 2 + 2 = x + 6
The length = (x+10) + 2 + 2 = x +14

Part C:
</span><span>the total area covered by the fountain and walkway. </span><span>
   = (x+6)(x+14)
   = x² + 20 x + 84

See the attache figure for more explanation

</span>

5 0
4 years ago
WILL MARK BRAINLIEST!!! PLZ HELP! The following graph describes function 1, and the equation below it describes function 2. Dete
Assoli18 [71]

Answer:

C

Step-by-step explanation:

The maximum/minimum values is simply the y-value of the vertex. Since both of the functions have a negative leading coefficient, they will both have maximum values.

For Function 1, we can see that the vertex is at (4,1). Thus, it's maximum value is at y=1.

For Function 2, we need to work out the vertex. To do this we can use:

x=\frac{-b}{2a} ,y=f(-b/2a)

To find the vertex.

Function 2 is defined by:

f(x)=-x^2+4x+1

Therefore:

a=-1, b=4, c=1

x=-(4)/2(-1)=-4/-2=2\\f(2)=-(2)^2+4(2)+1\\=-4+8+1\\=4+1=5

Thus, the vertex of Function 2 is at (2,5). Therefore, the maximum value of Function 2 is y=5.

5 is greater than 1, so the maximum value of Function 2 is greater.

The answer is choice C.

6 0
3 years ago
Before last week's baseball game, Darnell did 50 knee lifts in 2 minutes.
Natali [406]

Answer:

^ratio/perbandingan (indonesia)^

2 minutes= 50 kbee lifts

3 minutes= ...... knee lifts

ok, enter:

50 × 3/2

=25 × 3

=75 knee lifts

<h2>FINALLY FOUND, M0DERATOR!!!</h2>
8 0
3 years ago
Can you conclude that these triangles are congruent?<br> Yes or no
vfiekz [6]

Answer:

Yes

Step-by-step

If there flipped then they’re congruent

7 0
3 years ago
Read 2 more answers
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