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slava [35]
3 years ago
10

Plz help Me and thank you

Mathematics
1 answer:
kirza4 [7]3 years ago
7 0
X=32/7
Or
4 4/7 as mixed number
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If K is the midpoint of JL , JK = MN, LM = 3JK and JN = 78, find LN
borishaifa [10]
A. 42

JN, which is the whole line, equals 78. We learned that JK, KL, and MN are all equal, and that LM equals three points.

So, there are 6 parts to the line in total. Dividing 78 by 6 gives you 13 for a sixth of the line.

Now, to find LN all you have to do is know that LM is 13 times three. And just add one more 13 from MN.

13 x 4 = 42 as your answer. I hope you were able to follow my explanation lol
6 0
3 years ago
A box of oats cereal measures 24 cm long by 5 cm wide 25 cm high. A box of rice cereal measures 26 cm long by 4 cm wide by 28 mm
Tanzania [10]

Answer:

Box of oat:

24*5*25(all in cm)=3000 cm3

cereal:

26*4*2.8=291.2 cm3

oat is grater by 2708.8

Step-by-step explanation:

28mm was changed to 2.8 cm

7 0
2 years ago
Find the third degree polynomial function that has an output of 40 when x=1, and has zeros −19 and −i?
Yanka [14]

Answer:

f(x) = (x + 19)(x^2 + 1)

Step-by-step explanation:

Complex numbers:

The following relation is important for complex numbers:

i^2 = -1

Zeros of a function:

Given a polynomial f(x), this polynomial has roots x_{1}, x_{2}, x_{n} such that it can be written as: a(x - x_{1})*(x - x_{2})*...*(x-x_n), in which a is the leading coefficient.

Has zeros −19 and −i

If -i is a zero, its conjugate i is also a zero. So

f(x) = a(x - (-19))(x - (-i))(x - i) = a(x+19)(x+i)(x-i) = a(x+19)(x^2 - i^2) = a(x + 19)(x^2 + 1)

Output of 40 when x=1

This means that when x = 1, f(x) = 40. We use this to find the leading coefficient a. So

f(x) = a(x + 19)(x^2 + 1)

40 = a(20)(2)

40a = 40

a = 1

The polynomial is:

f(x) = (x + 19)(x^2 + 1)

3 0
3 years ago
Find the x and y intercepts. 2x-4y=8
ivanzaharov [21]

Answer:

2

x

+

4

y

+

8

=

0

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A cone has a height of 5 cm, and the radius is 2 cm. Calculate the volume.
mash [69]

Answer:

20.9 cm^3

Step-by-step explanation:

5 0
3 years ago
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