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ki77a [65]
3 years ago
12

O

Mathematics
1 answer:
stich3 [128]3 years ago
8 0

Answer:

$207

Step-by-step explanation:

From the question, we have;

  • Rate for the first 300 containers of 55 cents per container
  • Rate of containers above 300 as 60 cents per container

We are required to determine the amount earned from 370 containers;

Thus;

For the first 300 containers;

Amount earned = 300 × 55 cents

                           = $165

For the extra containers above 300

Extra containers = 370 containers - 300

                           = 70 containers

Amount earned = 70 × 60 cents

                           = $42

Therefore;

Total amount earned = $165 + $42

                                  = $207

Therefore, Jill earned $207 for the work.

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The difference between the squares of two numbers is 20. three times the square of the first number increased by the square of t
Mashcka [7]
We need a system of equations to solve this.  "Difference" is to subtract, and we are taking this difference of the 2 squared unknowns to be 20.  That equation is x^{2} -y^2=20.  Our "first number is x^2, so 3 times that is 3x^2.  "Increased by" is adding to that first number.  What we are adding is the second number.  The second equation is 3x^2+y^2=124.  Let's solve the first equation for x^2: x^2=y^2+20 and sub that value for x^2 into the second equation.  3(y^2+20)+y^2=124 and 3y^2+60+y^2=124.  Subtract 60 from both sides and combine the y^2 terms to get 4y^2=64.  Divide both sides by 4 to get y^2 = 16 and y = 4.  Let's go back now and solve for x.  We will use the fact that y^2 = 16 to solve for x^2 and then take the square root of it.  x^2-16=20, x^2 = 4, so x = 2.  Your solutions are x = 2 and y = 4.  There you go!
8 0
3 years ago
It is said that a student’s college GPA (grade point index) can be predicted by his/her HOCS (higher- order cognitive skills) su
cricket20 [7]

Answer:

apart from using the hoc to predict the college students gpa, some other variables can be used

1. the students intelligent quotient

2. ability to remember

3. study time

4. gym practice

Step-by-step explanation:

<u>1. the students intelligent quotient</u>

<u>gpa</u><u> </u>has a positive relationship with iq. they are both directly related. The more the iq of a a student, the greater is his ability to understand and have a good gpa. the slope will therefore be positive and be in an upward direction.

2. <u>ability to remember</u>

the gpa of students who have a good ability to remember but do not have a good grasp of the subject may not be high. the slope would be in a slightly upward direction

3. <u>study time</u>

gpa and practice have a positive relationship. the more a student studies, the more likelihood exists of having a better gpa. the slope would be upward bound.

4. <u>gym</u><u> </u><u>practice</u>

gpa and gym practice are not related so the slope would be in a downward direction.

when interpreting the direction of relationship after carrying out such an analysis, it is useful to watch out for the accompanying signs of the variables. if the sign of the beta coefficient is positive then a positive relationship with the dependent variable exists.

6 0
4 years ago
Evaluate the expression 2(8 − 4)2 − 10 ÷ 2. (5 points)
Marrrta [24]

Answer:

11

Step-by-step explanation:

2(8−4)(2)− 10/2

=11

___________________________________________________________

EASY

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6 0
3 years ago
In 29.6, which digit is in the tenths place?
mixer [17]

Answer:

6

Step-by-step explanation:

29.6

9 is ones

2 is tens

but 6 is tents because it is after the point or decimal

6 0
3 years ago
B. Betelgeuse
katen-ka-za [31]

Answer:

I think A..............

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