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katen-ka-za [31]
4 years ago
13

I need help ASAP plz

Mathematics
1 answer:
valentinak56 [21]4 years ago
3 0
After simplifying, the answer comes to x-y. I Hope this helped :).
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What is the value of the expression 2x2+3xy-4y2when x=2 and y=4
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The answer is 32 .....
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Jillian rows 20 km in 1 hour. Compute Jillian's speed in m/s.
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B

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If there are 14 dogs and 23 cats in the shelter. Which ratio DOES NOT accurately compare the
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Answer: B. 23 to 14

Since it asks for the ratio of dogs to cats the 14 has to go first. The other options are all different ways to write the same ratio. Hope this helps!
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A plane slices diagonally through a rectangular prism as shown. Which term best describes the cross-section formed by the inters
joja [24]

Answer:

Rectangle shaped cross section is formed by intersection of plane and prism.

Step-by-step explanation:

Given: A rectangular Prism.

To find: Shape of Cross Section when a plane intersect the prism diagonally

A plane intersect the Rectangular prism .i.e, Cuboid diagonally which means plane passes from top edge of cuboid to edge on bottom on opposite side.

Figure is attached.

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Can somebody solve this: x^4+2x^3-25x^2-26x+120
Dafna11 [192]

Answer:

 (x + 5) • (x + 3) • (x - 2) • (x - 4)

Step-by-step explanation:

Step-1 : Multiply the coefficient of the first term by the constant   1 • 15 = 15

Step-2 : Find two factors of  15  whose sum equals the coefficient of the middle term, which is   8 .

     -15    +    -1    =    -16

     -5    +    -3    =    -8

     -3    +    -5    =    -8

     -1    +    -15    =    -16

     1    +    15    =    16

     3    +    5    =    8    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  3  and  5

                    x2 + 3x + 5x + 15

Step-4 : Add up the first 2 terms, pulling out like factors :

                   x • (x+3)

             Add up the last 2 terms, pulling out common factors :

                   5 • (x+3)

Step-5 : Add up the four terms of step 4 :

                   (x+5)  •  (x+3)

            Which is the desired factorization

 (x + 5) • (x + 3) • (x - 2) • (x - 4)

3 0
3 years ago
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