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patriot [66]
3 years ago
5

The length of a rectangle is 3cm the with the width is 4cm . What is the area of the rectangle ?

Mathematics
1 answer:
dybincka [34]3 years ago
6 0

Answer:

12 cm²

Step-by-step explanation:

Use the area formula A = lw, where l is the length and w is the width:

A = lw

A = (3)(4)

A = 12

= 12 cm²

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100 Points!
tester [92]

Part A: x = -5/4, 3 || (-5/4, 0) (3, 0)

To find the x-intercepts, we need to know where y is equal to 0. So, we will set the function equal to 0 and solve for x.

4x^2 - 7x - 15 = 0

4 x 15 = 60 || -12 x 5 = 60 || -12 + 5 = -7

4x^2 - 12x + 5x - 15 = 0

4x(x - 3) + 5(x - 3) = 0

(4x + 5)(x - 3) = 0

4x + 5 = 0

x = -5/4

x - 3 = 0

x = 3

Part B: minimum, (7/8, -289/16)

The vertex of the graph will be a minimum. This is because the parabola is positive, meaning that it opens to the top.

To find the coordinates of the parabola, we start with the x-coordinate. The x-coordinate can be found using the equation -b/2a.

b = -7

a = 4

x = -(-7) / 2(4) = 7/8

Now that we know the x-value, we can plug it into the function and solve for the y-value.

y = 4(7/8)^2 - 7(7/8) - 15

y = 4(49/64) - 49/8 - 15

y = 196/64 - 392/64 - 960/64

y = -1156/64 = -289/16 = -18 1/16

Part C:

First, start by graphing the vertex. Then, use the x-intercepts and graph those. At this point we should have three points in a sort of triangle shape. If we did it right, each of the x-values will be an equal distance from the vertex. After we have those points graphed, it is time to draw in the parabola. Knowing that the parabola is positive, we draw in a U shape that passes through each of the three points and opens toward the top of the coordinate grid.

Hope this helps!

6 0
2 years ago
13/17 as a decimal rounded to the nearest tenth
erma4kov [3.2K]

Answer:

0.8

Step-by-step explanation:

It's right.

6 0
3 years ago
Describe the net for a square pyramid with a base with edges of 6 inches and slant height of 4 inches. Calculate the surface are
motikmotik

The square pyramid with a base with edges of 6 inches and slant height of 4 inches have a surface area of 84 in².

The net of the square pyramid have a base of 6 inches and the height of each triangle is 4 inches.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

The square pyramid with a base with edges of 6 inches and slant height of 4 inches. Hence:

Surface area = (6 * 6) + 2(6 * 4) = 84 in²

The net of the square pyramid have a base of 6 inches and the height of each triangle is 4 inches.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

7 0
2 years ago
Am I right?<br> I want to know if I am right
german

Answer:

B $13

Step-by-step explanation:

Julie has 16.73  That is approximately 17 dollars

She buys a purse that is 4.12.   That is approximately 4 dollars

17 -4 = 13

She will have approximately 13 dollars left

8 0
3 years ago
Read 2 more answers
A red die is tossed and then a green die is tossed what is the probability that the red die shows a six or the green die shows a
Dovator [93]
The red die would be 1/6 and the green die would be 1/6 but when you combine them you get the awnser 2/12.
6 0
3 years ago
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