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madreJ [45]
3 years ago
12

The temperature of a chemical solution is originally 21^\circ\text{C}21 ? C21, degree, C. A chemist heats the solution at a cons

tant rate, and the temperature of the solution is 75^\circ\text{C}75 ? C75, degree, C after 121212 minutes of heating.
Mathematics
1 answer:
Kryger [21]3 years ago
5 0

Answer:

The rate is 4.5\frac{\°C}{min}

Step-by-step explanation:

we know that

The formula to calculate the rate or slope between two points is equal to m=\frac{y2-y1}{x2-x1}

Let

x----> the time in minutes

y-----> the temperature in Celsius degrees

we have

A(0,21)\ B(12,75)

Substitute the values

m=\frac{75-21}{12-0}

m=\frac{54}{12}=4.5\frac{\°C}{min}

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Pete works as a door to door vacuum salesman and earns a base salary of $400 per week plus 8% commission on
ololo11 [35]

Answer:

$516.48

Step-by-step explanation:

Base salary is what Pete will be paid whether he makes a sale or not.

Sales commission is the percentage of the value of the sale that Pete makes which is added to his base salary.

Base salary = $400

Total sales last week = $1456

Commission = 8% of total sales

Commission of last week = 8% of $1456

= 0.08*1456 = $116.48

Gross salary = base salary + commission

= 400 + 116.48

= $516.48

5 0
3 years ago
Please please help me
Archy [21]

Answer:

The formula is: A = B * H where B is the base, H is the height, and * means multiply. The base and height of a parallelogram must be perpendicular. However, the lateral sides of a parallelogram are not perpendicular to the base.

Step-by-step explanation:

8 0
3 years ago
WHT is 1/6 +3/4 equal and put that answer in simplest form
Luba_88 [7]
So first you would have to make the two have common denominators. What we can do for that is say that they both go into 12. 1/6 x 2 = 2/12 and 3/4 x 3 = 9/12. Then we can add the two which is 2/12 + 9/12 = 11/12.
6 0
4 years ago
Read 2 more answers
There are 182 on 13 terms how many players are in each team
zheka24 [161]
Fourteen. 
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4 0
3 years ago
Read 2 more answers
What are the solutions to the equations?
Ghella [55]

Answer:

D

Step-by-step explanation:

x=(-4(plus minus)sqrt(4^2-4*2*(-1))/2*2

x=(-4(plus minus)sqrt(16+8))/4

x=(-4(plus minus)sqrt(24))/4

x=(-4(plus minus)sqrt(2*2*6))/4

x=(-4(plus minus)2*sqrt(6))/4

x=(2(-2(plus minus)*sqrt(6)))/2*2

x=(-2(plus minus)*sqrt(6))/2

x=(-2+sqrt(6))/2

x=(-2-sqrt(6))/2

(Option 4 I think, but can see for sure)

3 0
4 years ago
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