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3 years ago

Which is the correct first step -3x+2-5x-7=4x+2

Mathematics

1 answer:

Advocard [28]3 years ago

5 0

The answer to the question is to combine like terms first:

-8x - 5 = 4x + 2

Isolate the variable x:

-5 = 12x + 2

12x = -7

x = -7/12

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Charles owes $2,500 on a credit card. The card charges 12% interest compounded continuously. Write a formula that describes how

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Answer:

see below

Step-by-step explanation:

The formula for the amount resulting from P earning interest at rate r continuously compounded is ...

A = Pe^(rt)

for P=2500 and r=0.12, this becomes ...

A = 2500e^(0.12t)

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3 years ago

One third of a birds eggs hatched. If 2 eggs hatched, how many eggs did the bird lay?

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If 1/3 of a birds eggs hatch and 2 eegs hatch the bird would have to have laid 6 eggs in total.

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3 years ago

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Outline the process for Inscribing an equilateral triangle in a circle. Perform the construction in GeoGebra, and take a

mezya [45]

Answer:

I don't use Geogebra, but the following procedure should work.

Step-by-step explanation:

Construct a circle A with point B on the circumference.

Use the POINT and SEGMENT TOOLS to create a circle with centre B and radius BA.
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3 years ago

Use counting to determine the whole number that corresponds to the cardinality of these sets:______. (a) A= (xl x € Nand 20.<

Harlamova29_29 [7]

Answer:

Step-by-step explanation:

Cardinality of a set is defined as number of element in a set. It is represented as n(X) where X is any set.

a) Given the set A =(x l x € N and 20.< x<27). According to the set, the set contains the values of natural numbers between 20 and 27. The values are 21, 22, 23, 24, 25 and 26

A = (21, 22, 23, 24, 25, 26)

According to the set A, it can be seen that there are 6 elements in the set, this means n(A) = 6.

b) Given B=(x | xeN and x+1=x)

Since natural numbers starts from 1, the first element in the set is 2 i.e 1+1

The elements of the set B = (2, 3, 4, 4...)

The number of whole number in the set is therefore infinite.

c) For the set C={x l xe N and (x- 1)(x - 9) = 0)

We need to get the root of the equation (x- 1)(x - 9) = 0

x-1 = 0 and x-9 = 0

x = 1 and x = 9

Hence the element C = (1,9)

The number of whole number in the set is n(C) = 2

d) D={xlx E N, H X 5 100, and x is divisible by both 5 and 8)

Given the value of x between 5 and 100, the values of x divisible by 5 = (10, 15, 20, 25, 30, 35, 40, 45, 50 , 55, 60 , 65, 70, 75, 80 85, 90, 95)

values of x divisible by 8 = (16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96)

The total number of elements in both set = 29 i.e n(D) = 29

3 0

3 years ago

-3 ≤ 6 add 8 to both sides

yawa3891 [41]

Answer:

-3=5

6=14

so it would be 6

Step-by-step explanation:

8 0

2 years ago