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san4es73 [151]
3 years ago
7

If;= V-1, what is the value of 3?

Mathematics
1 answer:
seraphim [82]3 years ago
3 0
4











That’s what my tutor told me
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If i^2 = −1 and a = (i + 7), which is the result of squaring a?
Artyom0805 [142]

Answer:

48+14i

Step-by-step explanation:

So squaring (i+7) looks like this

(i+7)^2

(i+7)(i+7)

Use foil.

First: i(i)=i^2=-1

Outer: i(7)=7i

Inner: 7(i)=7i

Last: 7(7)=49

____________Add the terms.

48+14i

8 0
4 years ago
Plz help me with the once that are circle
nlexa [21]
Actually let me give you a website that can tell you any math answers with the work..... it is called wolframalpha.......YOUR WELCOME
5 0
3 years ago
Read 2 more answers
karen needs to make a total of 70 deliveries this week. so far she has completed 28 of them. what percentage of her total delive
dolphi86 [110]
To determine the percentage of deliveries Karen has completed, divide the number of deliveries completed by the total deliveries to be made. Then, multiply the quotient by 100%. This is shown below,
                            (28 / 70) x 100% = 40%
Therefore, Karen has completed 40% of her deliveries. 
8 0
3 years ago
I need help! Im very confused!
frez [133]

Answer:

Surface area of net = 310 cm²

Step-by-step explanation:

Given:

Dimension of two same rectangle = 11 cm by 9 cm

Dimension of single rectangle = 11 cm by 7 cm

Height of two triangle = 5 Cm

Base of two triangle = 7 Cm

Find;

Surface area of net

Computation:

Surface area of net = Surface area of two same rectangle + Surface area of single rectangle + Surface area of two same triangle

Surface area of net = 2[l x b] + [l x b] + 2[(1/2)(b)(h)]

Surface area of net = 2[11 x 9] + [11 x 7] + 2[(1/2)(7)(5)]

Surface area of net = 198 + 77 + 35

Surface area of net = 310 cm²

4 0
3 years ago
How can you tell whether a scatter plot is negative, positive, or approximately zero
Mashutka [201]
It will be going down read it from left to right and it it goes up its positive if not its negative<span />
4 0
4 years ago
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