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ella [17]
3 years ago
11

Done8P4_Lessons_for_23 March 20209x + 6y – 2 – 4y + 22​

Mathematics
1 answer:
Anon25 [30]3 years ago
8 0
The result is: 9x+2y+20
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Linda is planning to build a rectangular deck that is 12 feet longer than it is wide. Find its width if its area is 589 square f
BaLLatris [955]
Let the width be x, then the length is x + 12.
Area = length x width = x(x + 12) = 589
x^{2} +12x = 589
Solving the quadratic equation, we have that
x = 19 feet
i.e. the width is 19 feet.
6 0
3 years ago
What is the value of (-3)(5)(-4)?
Stells [14]

Answer:

60

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Write a word problem that could be solved using the expression 2x+60​
Sonbull [250]

Answer:

Step-by-step explanation:

james want to buy a sirt that cost 95 dollars. he only has 60 dollars saved.

if james gets paid 2 dollars a day how many days would he have to work to get 80 dollars.

solve for x

y=2x+60

95=2x+60

3 0
3 years ago
Pioneer company has given an aptitude test to 71 potential job applicants. The test score had an average of 81 and a standard de
Agata [3.3K]

Answer:

Follows are the solution to the given points:

Step-by-step explanation:

In point A:

\to df = n - 1 = 71-1= 70

In point B:

\to t = \frac{(x -X)}{s} = \frac{(93-81)}{8} = \frac{12}{8}= 1.5

In point C:

For df = 70, the top 5% critical t score

tcrit = 1.666914479

Thus,

\to 1.666914479 = \frac{(x - 81)}{8}\\\\\to 1.666914479 \times 8 = (x - 81)\\\\\to  13.335315832 = (x - 81)\\\\\to  13.335315832 +81 =x \\\\\to x= 94.335315832

In point D:

For df = 70, the top 5% critical t score

tcrit = -1.666914479

\to -1.666914479 = \frac{(x - 81)}{8}\\\\\to -1.666914479 \times 8= (x - 81)\\\\\to -13.335315832= (x - 81)\\\\\to -13.335315832+81 = x \\\\\to x = 67.664684168\\\\

In point E:

The lower cutoff is 0.10 in the center, which would be around 80 %. The critical point therefore is

tcrit = -1.293762898

\to -1.293762898 = \frac{(x-81)}{8}\\\\\to -1.293762898 \times 8= (x-81) \\\\\to -1.293762898 \times 8= (x-81) \\\\\to -10.350103184=x-81\\\\\to -10.350103184+81=x\\\\\to x=70.649896816

In point F:

The lower cutoff is 0.90 in the center, which would be around 80 %. The critical point therefore is

tcrit = 1.293762898

\to 1.293762898 = \frac{(x-81)}{8}\\\\\to 1.293762898 \times 8= x-81\\\\\to 10.350103184 =x-81\\\\\to 10.350103184 +81=x\\\\\to x = 91.350103184\\

5 0
3 years ago
A coral reef grows 0.12 m every week how much does it grow in 5 weeks
densk [106]
0.12m(x)=?
0.12m × 5 weeks = 6m
4 0
3 years ago
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