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lara [203]
4 years ago
7

Need mega help

Mathematics
1 answer:
Nookie1986 [14]4 years ago
7 0
5+2(3+2x)=x+3(x+1)

11=3
no real solution
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If y varies jointly as x and the cube of z and y=16 when x=4 and z=2 then y=0.5 when x=-8 and z=-3?
Evgesh-ka [11]

Answer: F (False)

Step-by-step explanation:

 Jointly variation has the following form:

y=kxz

Where k is a constant of propotionality.

Substitute values:

If y=16, x=4 and z=2, then k is:

16=k(4)(2)^{3}\\k=1/2

If x=-8 and z=-3 the the value of y is:

y=(1/2)(-8)(-3)^{3}\\y=-108

Then the answer is FALSE.

8 0
4 years ago
Read 2 more answers
Z2+4z-165=(z-11)(z+-15)
Contact [7]

Answer: look at the picture

Step-by-step explanation: Hope this help :D

8 0
3 years ago
Suppose that in a particular country, the probability that a randomly chosen person is a left-handed baseball player is 0.015 0.
never [62]

Answer:

0.0625

Step-by-step explanation:

P(left/baseball) =

P(baseball ^ left)/P(baseball)

0.24 = 0.015/P(baseball)

P(baseball) = 1/16 or 0.0625

4 0
4 years ago
For a sale, a store decreases its prices on all items 20%. An item that cost $120 before the sale now costs $120 - 0.2($120). Wh
tino4ka555 [31]
If the store decreases its prices by 20%, then ur actually paying 80%

0.80(120)  <=== ur expression

lets check..
0.80(120) = 96
120 - 0.2(120) = 120 - 24 = 96 (yep, it matches)
4 0
3 years ago
How to factorise 7x+7 and x²+2x i need help bad
jasenka [17]
There is a 7 in both 7x and 7 so you will take that out.

7 (x+1)

Then there is an x in both x2 and 2x so you take that out.

x (x+2)
6 0
3 years ago
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