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Alla [95]
2 years ago
8

Are the following two expressions equivalent? 7+7x ; 7 (x+ 1/7 )

Mathematics
1 answer:
love history [14]2 years ago
6 0

Answer:

no 7(x+1/7) is not equivalent to 7+7x

Step-by-step explanation:

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

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}

5 0
3 years ago
A bag contains 8 white, 4 red, 7 green, and 5 blue marbles. Eight marbels are withdrawn randomly. How many withdrawn marbles wer
Wewaii [24]

We are starting with 8+4+7+5=24 marbles. We're taking out 8, so we'll be left with 24-8=16 marbles. Think about those 16. If the probability of drawing a white one is 1 in 4, that means that 1/4 of the marbles are white. 1/4 of 16 is 16/4 = 4 marbles are white. Since we started with 8 white, and there are 4 left, we must have taken out 8-4 = 4 white marbles.

7 0
3 years ago
Imma need some help with this plz
koban [17]
 a= 3, b = 2 and c = -3
- a^2 -3 b^3 +c^2 +2b^3-c^2 = -a^2 -b^3
                        = -(3)^2-(2^3)=-9 -8 =-17
4 0
3 years ago
What is the second term of the sequence generated by the formula an = 3n?
astraxan [27]
I think b.3 i am not sure but it should be b
6 0
3 years ago
Read 2 more answers
Explain how the value of 7 in 327,902 will change if you move it to the tens place
Ilya [14]
In the initial number xx7,xxx; 7 is in the thousands place meaning its value is 7,000.
If it is moved to the tens place = xxx,x7x then it's value will decrease, it will become 70 only.

Every placement has its corresponding values, thus whereven the number 7 is place it is multiplied by its corresponding values (ones, tens, hundreds, etc).


5 0
3 years ago
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