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svetoff [14.1K]
3 years ago
8

Two paperback books cost a total of

Mathematics
1 answer:
KengaRu [80]3 years ago
3 0

Answer:

20 dollars

Step-by-step explanation:

I think 20+20+20=60 then 60-40=20

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A triangle has a base length of 3ac2 and a height 5 centimeters more than the base length. Find the area of the triangle if a =
pochemuha

Answer:

45750 cm²

Step-by-step explanation:

<h3>Area of triangle:</h3>

    a = 4 and c = 5

 base length = 3ac²

                      = 3 * 4 * 5 * 5

                     = 300 cm

    height = 5 cm more than the base length

               = 300 + 5

               = 305 cm

      \sf \boxed{\bf Area \ of \ triangle = \dfrac{1}{2}*base \ length * height}

                                    \sf =\dfrac{1}{2}*300*305\\\\= 150 * 305\\\\= 45750 \ cm^2

3 0
2 years ago
Draw polygon abcdef in this coordinate plane, given its vertices a=(-2,-3), b=(0,-3), c=(0,1), d=(3,1), e=(3,3), f=(-2,3)
tiny-mole [99]

The polygon abcdef in the coordinate plane shown with area of 18 square units.

<h3>What is a regular polygon?</h3>

A polygon is a geometric figure with a finite number of sides in two dimensions. On the sides or edges of a polygon, straight-line segments are joined end to end to form a closed shape. The vertices, also known as corners, are the points where two line segments meet and form an angle.

We have vertices for the polygon:

a=(-2,-3), b=(0,-3), c=(0,1), d=(3,1), e=(3,3), f=(-2,3)

After marking the coordinates on the coordinate plane and connecting the lines, we will get a polygon.

We can find the area of the shape:

Area of the shape = 18 square units

Thus, the polygon abcdef in the coordinate plane shown with area of 18 square units.

Learn more about the regular polygon here:

brainly.com/question/11810316

#SPJ1

7 0
2 years ago
If f (7) = 22, then<br> ff-1(22)) = [?]
lozanna [386]

Answer:

f(f^{-1} (22)) equals 22.

Step-by-step explanation:

For every input in a function, there will be one corresponding output. When taking the output of the function and inserting it as the input to the inverse function of the original, the output will be equivalent to the exact input of the original function. In this case, because f(7)=22, that means f^{-1} (22) will equal 7. Using this knowledge, you can find the value of f(f^{-1} (22)), which will be f(f^{-1} (22)) = f(7)=22, so f(f^{-1} (22)) equals 22.

8 0
3 years ago
Which comparison is true? A. 4,237 &gt; 4,327 B. 5,094 &lt; 5,904 C. 6,438 = 6,448 D. 7,215 &lt; 7,152
Mkey [24]
B. 5,094 < 5,904 is the answer
7 0
3 years ago
Read 2 more answers
How to find all of the angles and sides of a triangle using sine
Hoochie [10]

Answer:

how to find them

Step-by-step explanation:

1. The sine of the angle = the length of the opposite side. the length of the hypotenuse.

2. The cosine of the angle = the length of the adjacent side. the length of the hypotenuse.

3. The tangent of the angle = the length of the opposite side. the length of the adjacent side.

6 0
4 years ago
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