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Helen [10]
3 years ago
7

Please helllppp its in the picture and due in 5 mins​

Mathematics
2 answers:
Alina [70]3 years ago
7 0

Answer:

D (I think)

Step-by-step explanation:

If you multiply -4 times -2 you get positive 8 and the five stays the same so it would be 8/5. If you multiply -4 times 3x you would get -12x. So the total equation would read 8/5 - 12x

ioda3 years ago
3 0

Answer:

it is a it's a

Step-by-step explanation:

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Studying a group of children from first grade through high school to see the effect of pre-schooling on educational success woul
aleksandr82 [10.1K]

Answer:

Longitudinal study

Step-by-step explanation:

Information is collected over extended periods of time in a longitudinal study, but in cross-sectional, natural observation, and experimental studies, information is collected over short periods of time or in one time only. Based on the choices given, this type of study would be a longitudinal study.

4 0
2 years ago
If one letter is chosen at random from the word refuse what is the probability that the letter chosen will be an e
mrs_skeptik [129]

Answer: 1/3

Step-by-step explanation: The probability is given by the number of times the event could happen (in this case get an "e"), over the number of all the possibilities (in this case, the six letters of the word)

Therefore, probability \frac{letter_e}{all letter}=\frac{2}{6} =\frac{1}{3}

5 0
3 years ago
I don't know how to do this :(
Lemur [1.5K]
Hello.

e is a mathematical constant, and it's like pi, it's irrational. It's approximately equal to 2.71828....

So, e^{\frac{3}{2}} = 4.4816... 
It's approximately equal to 4.5 which is choice 2.
8 0
3 years ago
Read 2 more answers
What is the center and radius of the circle with equation x2 + y2 - 4x + 22y + 61 = 0?
lesantik [10]
Hello,

x^2+y^2-4x+22y+61=0\\\\
(x^2-4x+4) +(y^2+22y+121)-121-4+61=0\\\\
(x-2)^2+(y+11)^2=64




Center is (2,-11) and radius is 8
6 0
3 years ago
A small plane flew 808 miles in 4 hours with the wind. Then on the return trip flying against the wind it travels only 488 miles
Blababa [14]

Answer:

Step-by-step explanation:

let wind velocity=x

speed of plane=y

(x+y)*4=808

x+y=808/4=202   ...(1)

(y-x)*4=488

y-x=122 ...(2)

add (1) and (2)

2y=202+122=324

y=324/2=162

from (1)

x+162=202

x=202-162=40

wind velocity=40 m/hr

speed of plane=162 m/hr

8 0
2 years ago
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