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Luba_88 [7]
4 years ago
10

6.

Mathematics
1 answer:
joja [24]4 years ago
6 0

Answer:

x² - 16

Step-by-step explanation:

Given

(x - 4)(x + 4)

Each term in the second factor is multiplied by each term in the first factor, that is

x(x + 4) - 4(x + 4) ← distribute both parenthesis

= x² + 4x - 4x - 16 ← collect like terms

= x² - 16

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Plz correct me if i'm wrong thx
OLEGan [10]

Answer:

30 fish

Step-by-step explanation:

Each fish needs 1/3 liter of water.

This means that there can be 3 fish in 1 liter of water. There are 10 liters in all. Multiply 3 with 10

3 x 10 = 30

30 fish is your answer.

~

6 0
3 years ago
Read 2 more answers
If f(x) = kx^3+ x^2 − kx + 2, find a number k such that the graph of f contains the point (k, -10)
Elina [12.6K]

If we write k where we see x in the equation and set the result equal to -10, we get the result.

  • f(k)=k(k)^3+k^2-k(k)+2
  • =k^4+k^2-k^2+2
  • =k^4+2=-10
  • k^4=-12
  • k_{1}=\sqrt[4]{3}(-1-i)
  • k_{2}=\sqrt[4]{3}(-1+i)
  • k_{3}=\sqrt[4]{3}(1-i)
  • k_{4}=\sqrt[4]{3}(1+i)

4 0
1 year ago
Find the x and y intercepts of -7xt6y=5
iren2701 [21]
-7x + 6y =5
x intercept. y=0
-7(x) + 6(0)=5
x=-5/7

y intercept, x=0
-7(0)+6(y) =5
y=5/6
3 0
3 years ago
Kinsey has a plan to save $60 a month for 16 months so that she can purchase a new television. After 11 months Kinsey has saved
kirza4 [7]

Answer:

b. Kinsey must save $72 per month to achieve her goal.

Step-by-step explanation:

<em>Goal over 16 months:</em> $60 x 16 = $960

<em>Collected after 11 months:</em> $600

  • $360 still needed
  • 5 months lefts

$360 ÷ 5 = $72

4 0
3 years ago
X=2y=14 and x-3y=-11
levacccp [35]
X - 2y= 14
x - 3y= - 11   | * ( -1)

x - 2y = 14
-x + 3y= 11
----------------
/    y= 25

x - 2*25= 14
x - 50 =14
x= 14+50
x=64

7 0
3 years ago
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