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stealth61 [152]
3 years ago
9

The perimeter of a rectangle is 42 cm and the area is 80 cm². Write an equation to model the situation and find the dimensions o

f the rectangle.
​
Mathematics
1 answer:
mafiozo [28]3 years ago
7 0

Answer:

16cm by 5cm

Step-by-step explanation:

P=2(l+w)  

A= wl

80 factorization: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80.

you then would have to find 2 numbers that would add up to make 42.

When you try 16*2+5*2= 32+10= 42 cm as your perimeter.

16*5= 80 cm^2 as your area.

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{ Look at the first image. }
Pepsi [2]

Answer:

Question 1. Correct choice A

Question 2 Correct choice A

Step-by-step explanation:

To answer the first question, let's do the following operation, subtract the salary for n years of education with the salary for n-1 years of education:

(125.66x_{2}-846.3) - (125.66x_{1}-846.3)\\

Where:

x_{2} represents n years of education

x_{1} represents n-1 years of education.

Then, solving:

(125.66x_{2}-846.3) - (125.66x_{1}-846.3) = 125.66x_{2}-846.3-125.66x_{1} + 846.

= 125.66x_{2}-125.66x_{1}\\

= 125.66 (x_{2}-x_{1}) Since x_{2} is always a unit greater than x_{1}, its subtraction is always equal to 1.

= 125.66(1)\\ = 125.66

This result shows that the increase for an additional year of education is always equal to the value of the slope of the line, that is, $ 125.66. Therefore the correct option for this question is "A".

In cuano to the second question:

The intersection of the line with the y-axis occurs when the value of x is equal to zero, or in this case, when the years in the collage are 0.

This means that when there are no years of education in the collage, the salary is expected to be equal to the value of the intersection of the line with the axis y, that is, equal to 24,600 thousand dollars.

Then the correct option is A.

5 0
3 years ago
Strep throat is caused by Streptococcus bacteria. The amount of bacteria multiplies at a rate of 10^13 per 10^2 hours. What is t
Lyrx [107]
Multiplication rate is 10¹³/100=10¹¹ per hour.
After 1000 hours there are 10¹¹×1000=10¹⁴
5 0
3 years ago
And an equation of the line. Write the equation using function notation.
NeTakaya

Answer:

F(x) = - 2/5x - 11

Step-by-step explanation:

F(x) = - 2/5x + c

-9 = - 2/5(-5) + c

-9 = 2 + c

- 11= c

F(x) = - 2/5x - 11

7 0
2 years ago
Please help! I will give Brainliest!
pochemuha

Answer:

its c

Step-by-step explanation:

8 0
3 years ago
I WILL MARK BRAINLEST PLS HELP
Natali5045456 [20]

Answer:

Definition of segment bisector, SSS

Step-by-step explanation:

Definition of segment bisector (It says that the midpoint is part of the line that cuts through the middle of the angle of an isosceles)

SSS (side side side, meaning that because each side is equal to the others, than they are equal triangles


8 0
3 years ago
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