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Murrr4er [49]
3 years ago
15

31.24 to 1 decimal place

Mathematics
1 answer:
Blababa [14]3 years ago
6 0

Answer:

31.2

Step-by-step explanation:

Because you only round up if the number next to the 1st decimal place is greater than 5, you just drop the 4 and keep 31.2.

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Alja [10]

Answer: she made 11 sparkelers and gavin made 21

Step-by-step explanation:

4 0
3 years ago
If f(x)= 6x+7, determine the value of f(r-2)
Tanzania [10]

The value of f(r - 2) is 6r - 5

<h3>What is a function?</h3>

Function can be defined as an expression, rule, or law that defines a relationship between one variable known as the independent variable and another called the dependent variable.

From the information given ,we have;

f(x)= 6x+7, with f ( r - 2)

From here, we have that x = r -2

Now, let's substitute x as r - 2 in the function given;

f(x) = 6x + 7

f(r - 2) = 6 ( r - 2) + 7

Expand the bracket

f(r - 2) = 6r - 12 + 7

collect like terms

f(r - 2) = 6r - 5

Thus, the value of f(r - 2) is 6r - 5

Learn more about functions here:

brainly.com/question/6561461

#SPJ1

5 0
1 year ago
How do u do parabola
alekssr [168]

Answer:

Step-by-step explanation:

Finding the vertex or the end of the shape.

Find the y -intercept, (0,f(0)) ( 0 , f ( 0 ) ) .

Solve f(x)=0 f ( x ) = 0 to find the x coordinates of the x -intercepts if they exist.

Make sure that you've got at least one point to either side of the vertex. ...

Sketch the graph.

4 0
2 years ago
An equivalent expression for 4(x+2)+5(y+3)
Anit [1.1K]

Answer:

4x+5y+23

Step-by-step explanation:

4(x+2)+5(y+3)

4x+8+5y+15

4x+5y+8+15

4x+5y+23

7 0
3 years ago
Beth is moving into a new house and purchased cardboard boxes for packing her things. Each cardboard box has a square base and a
Shtirlitz [24]
Answer: Choice D)
S(x) = 6x^2 - 20x

-----------------------------------------------
-----------------------------------------------

Explanation:

x = side length of base
x*x = x^2 = area of base

The top also has an area of x^2 since the base and top are both congruent squares. The total base area is x^2+x^2 = 2x^2

The height h is 5 inches shorter than the base, so
h = (base length) - 5
h = x-5

Each lateral side is of area h*x = (x-5)*x = x^2-5x

There are 4 lateral sides
Total lateral area = 4*(area of one lateral side)
Total lateral area = 4*(x^2-5x)
Total lateral area = 4*x^2-4*5x
Total lateral area = 4*x^2-20x

Add the total lateral area (4x^2-20x) to the total base area (2x^2)

Doing so gets us
S(x) = Total Surface Area
S(x) = (Area of bases) + (area of lateral sides)
S(x) = (2x^2) + (4x^2-20x)
S(x) = (2x^2+4x^2) - 20x
S(x) = 6x^2 - 20x
which is why the answer is choice D

4 0
3 years ago
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