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SSSSS [86.1K]
2 years ago
13

How do i solve this (give steps please)

Mathematics
2 answers:
Rus_ich [418]2 years ago
8 0

Step-by-step explanation:

Let

A_1 = area of the small rectangle

\:\:\:\:\:= x(3x + 1) = 3x^2 + x

A2 = area of the large rectangle

\:\:\:\:\:= (4x + 3)(10x - 7)

\:\:\:\:\:= 40x^2 - 28x + 30x - 21

\:\:\:\:\:= 40x^2 + 2x - 21

Since there are 3 small rectangles, the area A of the shaded area is

A = A_2 - 3A_1

\:\:\:\:= (40x^2 + 2x - 21) - 3(3x^2 + x)

\:\:\:\:= 40x^2 + 2x - 21 - 9x^2 - 3x

\:\:\:\:= 31x^2 - x - 21

anygoal [31]2 years ago
4 0

Answer:

42x - 21 - 9x^2

Step-by-step explanation:

basically do the area of the whole rectangle then di the area of one of the empty spaces. then subtract the value of the empty space three times because there are three empty spaces.

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Will make brainliest if answered correctly
Komok [63]

Answer:

i think the answer is (B)

Step-by-step explanation:

The y value of a point where a vertical line intersects a graph represents an output for that input x value. If we can draw any vertical line that intersects a graph more than once, then the graph does not define a function because that x value has more than one output.

6 0
3 years ago
Read 2 more answers
Jessie is going to the county fair. The cost of admission is $5.00 and it is $2.00 for each ride. If Jessie has $19.00, Write an
shusha [124]

Answer:

7

Step-by-step explanation:

7 0
2 years ago
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Write an equation in slope-intercept form of the line that passes through the points (-2.3) and (2.7)
liraira [26]

I'm pretty sure the answer is y=x+5

8 0
2 years ago
The produce manager at a market orders 10 lb of​ tomatoes, 20 lb of​ zucchini, and 40 lb of onions from a local farmer one week.
rewona [7]

Answer:

(A) A=\left[\begin{array}{ccc}10&20&40\end{array}\right]

(B) B=\left[\begin{array}{ccc}11&22&44\end{array}\right]

(C) A+B=\left[\begin{array}{ccc}21&42&84\end{array}\right]

Step-by-step explanation:

The manager ordered 10 lb of​ tomatoes, 20 lb of​ zucchini, and 40 lb of onions from a local farmer one week.

(A)

Matrix <em>A</em> represents the amount of each item ordered. ​It is 1 × 3 matrix.

Then matrix <em>A</em> is:

A=\left[\begin{array}{ccc}10&20&40\end{array}\right]

(B)

Next week the manager increases the order of all the products by 10%.

Then the amount of new orders are:

Tomatoes =10\times [1+\frac{10}{100}]=10\times1.10=11

Zucchini =20\times [1+\frac{10}{100}]=20\times1.10=22

Onions =40\times [1+\frac{10}{100}]=40\times1.10=44

Th matrix <em>B</em> represents the amount of each order for the next week. Then matrix <em>B</em> is:

B=\left[\begin{array}{ccc}11&22&44\end{array}\right]

(C)

Add the two matrix <em>A</em> and <em>B</em> as follows:

A+B=\left[\begin{array}{ccc}10&20&40\end{array}\right]+\left[\begin{array}{ccc}11&22&44\end{array}\right]\\=\left[\begin{array}{ccc}(10+11)&(20+22)&(40+44)\end{array}\right]\\=\left[\begin{array}{ccc}21&42&84\end{array}\right]

The entries of the matrix (<em>A</em> + <em>B</em>) represent the amount of tomatoes, zucchini and onions ordered for two weeks.

5 0
3 years ago
Jolly measured the cake. Then she calculated that it has a circumference of 15cm. what is the cake's diameter? Use 3.14 for pi.
Hatshy [7]

Answer:

4.76cm

Step-by-step explanation:

Given data

circumference= 15cm

The expression for circumference is

C= 2πr

substitute and solve for r

15= 2*3.14*r

r= 15/ 2*3.14

r=15/ 6.28

r= 2.38 cm

Hence the diameter is

D= 2r

D= 2*2.38

D=4.76cm

6 0
2 years ago
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