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Arada [10]
2 years ago
5

Marshall evaluates the expression 15.3 - 7.9 and gets an answer of 7.4.

Mathematics
1 answer:
d1i1m1o1n [39]2 years ago
8 0

Answer:

C

Step-by-step explanation:

Anything less than 5 rounds down while 5 and anything more rounds up. Therefore...

15.3 rounds to 15

7.9 rounds to 8

7.4 rounds to 7

So, his answer is reasonable.

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What is x-2+=6 because my teacher say that it's not hard and i look hard
aivan3 [116]

Answer:

x=8

Step-by-step explanation:

x-2=6

x=6+2

x=8

7 0
2 years ago
Read 2 more answers
Consider the following equations. f(x) = − 4/ x3, y = 0, x = −2, x = −1. Sketch the region bounded by the graphs of the equation
Sindrei [870]

Answer:

1.5 unit^2

Step-by-step explanation:

Solution:-

- A graphing utility was used to plot the following equations:

                         f ( x ) = - \frac{4}{x^3}\\\\y = 0 , x = -1 , x = -2

- The plot is given in the document attached.

- We are to determine the area bounded by the above function f ( x ) subjected boundary equations ( y = 0 , x = -1 , x = - 2 ).

- We will utilize the double integral formulations to determine the area bounded by f ( x ) and boundary equations.

We will first perform integration in the y-direction ( dy ) which has a lower bounded of ( a = y = 0 ) and an upper bound of the function ( b = f ( x ) ) itself. Next we will proceed by integrating with respect to ( dx ) with lower limit defined by the boundary equation ( c = x = -2 ) and upper bound ( d = x = - 1 ).

The double integration formulation can be written as:

                           A= \int\limits_c^d \int\limits_a^b {} \, dy.dx \\\\A = \int\limits_c^d { - \frac{4}{x^3} } . dx\\\\A = \frac{2}{x^2} |\limits_-_2^-^1\\\\A = \frac{2}{1} - \frac{2}{4} \\\\A = \frac{3}{2} unit^2

Answer: 1.5 unit^2 is the amount of area bounded by the given curve f ( x ) and the boundary equations.

Download docx
3 0
3 years ago
Erin wants to purchase 3 CDs for $10 each. How much money<br>does she need?​
Aloiza [94]

Answer: 30

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
4:3 and 25:45 are equal ratios true or false
kondaur [170]
False.

The scale factor for 3 and 45 is 15.

45 / 3 = 15.

We know that 25 isn't even a whole number for the scale factor, because no number x 4 can equal 25 (whole numbers only).

25 / 3 = 6.33333
8 0
2 years ago
bill can paint a room in 6 hours, but bills father could do it in four. if the two work together, how long would it take them to
aleksley [76]

Answer:

3 hrs thats my anwser

Step-by-step explanation:

brainliest if right

3 0
3 years ago
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