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nexus9112 [7]
3 years ago
14

The answer is 8 but how do you solve it 6-2(3-4)

Mathematics
2 answers:
icang [17]3 years ago
5 0
Do the parentheses first (3 - 4 ) then in this case 6 - 2 

((3 - 4)) = -1 (Since this equal a negative number we will take this out0

6 - 2 = 4 

the we change the subtraction ( - ) symbol to a(n)  addition ( + ) symbol for the one in 6 - 2

So, it becomes 6 + (2)
Because you had to divide ( ÷ ) and multiply ( × ) on the both of your sides.. }{from the leftside to the rightside}

Then  6 + 2  = 8

This can be your explaination ↑
Neko [114]3 years ago
3 0
Start with the parentheses 

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What is the perimeter of a square with an area of 81 cm2
tatyana61 [14]

Answer:

36 cm

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
G a survey of property owners' opinions about a street-widening project was taken to determine if owners' opinions were related
Naily [24]

Answer:

The expected frequency for people against the project and who have over 120 feet of property foot frontage is 3.9.

Step-by-step explanation:

The data provided is:

                                                   Opinion    

Front Footage   For       Undecided Against    Total

Under 45 feet    12                4              4              20

  45-120 feet           35                5             30      70

Over 120 feet     3                2              5              10

       Total           50                11             39    100

The formula to compute the expected frequency is:

E(X)=\frac{\text{Row Total}\times \text{Column Total}}{\text{TOTAL}}

Compute the expected frequency for people against the project and who have over 120 feet of property foot frontage as follows:

E(X)=\frac{\text{Row Total}\times \text{Column Total}}{\text{TOTAL}}

E(5)=\frac{10\times 39}{100}=\frac{39}{10}=3.9

Thus, the expected frequency for people against the project and who have over 120 feet of property foot frontage is 3.9.

6 0
3 years ago
If f(x)=3x^3 then what is the area enclosed by the graph of the function, the horizontal axis, and vertical lines at x=2 and x=4
Ber [7]

Answer:

Area: 180 units2 (units 2 is because since the are no specific unit given but every area should have a unit  of measurement)

Step-by-step explanation:

The area enclosed by the graph of the function, the horizontal axis, and vertical lines is the integral of the function between thos two points (x=2 and x=4)

So , let's solve the integral of f(x)

Area =\int\limits^2_4 3{x}^3 \, dx = 3*x^4/4+C

C=0

So if we evaluate this function in the given segment:

Area= 3* (4^4)/4-3*(2^4)/4= 3*(4^4-2^4)/4=180 units 2

Goos luck!

5 0
3 years ago
Divide 800ml into ratio 3:7
Brums [2.3K]
Simply take the numerator (3) and denominator (7) and add them together. 

3+7 = 10, which means that the ratio will provide parts that are in multiples of 10 depending on the total

so take 10x = 800 

x = 80.

Then multiply this by the numerator and denominator 

3*80/7*80 = 240/560. 
6 0
3 years ago
What are some numerical expressions for 9 times x?
Lorico [155]

Answer:

9x

9 • x

9(x)

9*x

I think that's what the question means?

7 0
3 years ago
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