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pantera1 [17]
3 years ago
14

Evaluate z^2−3z+4, when z = −4

Mathematics
2 answers:
Mashutka [201]3 years ago
5 0

Answer:

32

Step-by-step explanation:

(-4)^2 -3(-4) +4=16+12+4

=32

AVprozaik [17]3 years ago
5 0

\implies {\blue {\boxed {\boxed {\purple {\sf {32}}}}}}

\sf \bf {\boxed {\mathbb {STEP-BY-STEP\:\:EXPLANATION:}}}

{z}^{2}  - 3z + 4

Plugging "-4" for all values of "z", we have

=  ({ - 4})^{2}  - 3( - 4) + 4

= ( - 4 \times  - 4) + 12 + 4

= 16 + 12 + 4

= 32

\large\mathfrak{{\pmb{\underline{\red{Mystique35 }}{\red{❦}}}}}

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o-na [289]
'Tis a Binomial. if it were a monomial, there would be no operator between 6x^2 and 2xy^2 
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3 years ago
Please Help, Geometry find exact value of missing sides
zzz [600]

Answer:

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Step-by-step explanation:

i helps

3 0
2 years ago
katie collets stamp she has stamps from canada, United Staes,ands Rest of the world in a ratio of 1:1.2:1.5 she has 135 stamps f
lyudmila [28]

Answer:

90 stamps from Canada, 108 stamps from the United States, and 135 stamps from the Rest of the World

Step-by-step explanation:

Since this is a problem of proportion we can use the Rule of three to solve this. We do this by multiplying the diagonal available values and dividing by the third value in order to get the missing variable, which in this case would be the number of stamps in the other country. Like so...

1.5  <=====>  135 stamps

1.2  <=====>  x  stamps (United States)

(1.2 * 135) / 1.5 = 108 stamps (United States)

1.5  <=====>  135 stamps

1  <=====>  x  stamps (Canada)

(1 * 135) / 1.5 = 90 stamps (Canada)

Finally, we can see that Katie had 90 stamps from Canada, 108 stamps from the United States, and 135 stamps from the Rest of the World. All creating a ratio or 1:1.2:1.5

8 0
2 years ago
Find a formula for the sum of the first n even positive integers.
melisa1 [442]
So even postive integers are by defention in form 2k where k is a natural number so
let the sum of even integers to n=S
S=2(1+2+3+4+5+6+7+8+......+k-1+k
divide bith sides of equation 1 by 2
0.5S=1+2+3+4+5+...........+k-1+k
S=2(k+(k-1)+..............................+2+1)
divide both sides of equation 2 by 2
0.5S=k+k-1+..............................+2+1)
by adding both we will get
___________________________
S=(k+1)(k)
so the sum will be equal to
S=
{k}^{2}  + k
so let us test the equation
for the first 3 even number there sums will be
2+4+6=12
by our equation 3^2+3=12
gave us the same answer so our equation is correct
7 0
2 years ago
Evaluate the function.<br> Given f(x) = x2 - 4x2 - 3x - 5, find f(5).
Simora [160]

Answer:

5

Step-by-step explanation:

4 0
3 years ago
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