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postnew [5]
3 years ago
15

What property is illustrated by this question? 0.2x + 1.3 + 3.9x + 9.75 A.

Mathematics
1 answer:
Bond [772]3 years ago
6 0

Answer:

The associative property is illustrated by this question ⇒ B

Step-by-step explanation:

Commutative Property states that you can move numbers around and still arrive at the same answer

For addition, a + b = b + a

For multiplication, a × b = b × a

Associative Property states that you can re-group numbers and you will get the same answer and the commutative property

For addition, (a + b) + c = a + (b + c)

For multiplication, (a × b) × c = a × (b × c)

Distributive Property  states that the sum of two numbers times a third number is equal  to the sum of each addend times the third number

(a + b) × c = a × c + b × c

∵ The question is 0.2 x  + 1.3 + 3.9 x + 9.75

- To solve it you will add the like terms so you must group them

∴ 0.2 x  + 1.3 + 3.9 x + 9.75 = (0.2 x + 3.9 x) + (1.3 + 9.75)

- This is the associative property because you re-group the numbers

∴ The associative property is illustrated by this question

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A rectangular picture from has a length of 7 inches and a width
mezya [45]

Answer:

8.6

Step-by-step explanation:

This uses the Pythagorean Theorem

a^2 + b^2 = c^2

a = 5

b = 7

c = ?

5^2 + 7^2 = c^2

25 + 49 = c^2

74 = c^2

sqrt(c^2) = sqrt(74)

c = 8.60 which when rounded = 8.6

6 0
2 years ago
Angles of a triangle
PilotLPTM [1.2K]

Answer:

180 -93+37= 180 -124 = 56

Step-by-step explanation:

interior angles of a triangle are 180 degrees

so 180 - 124 = 56

6 0
2 years ago
X2 - 4x + 4 = 0 solve following quadratic equations graphically and a table
stepan [7]

Let's create a table, and use arbitrary values of x between -3 and 3 (if the solution is not in this interval, we can use another one later). If we call:

f(x)=x^2-4x+4

We want to find the x's for with f(x) = 0

This is the table:

And now we can evaluate f(x) in each value of x to complete the table:

\begin{gathered} f(-3)=(-3)^2-4\cdot(-3)+4=9+12+4=25 \\ f(-2)=(-2)^2-4\cdot(-2)+4=4+8+4=16 \\ f(-1)=(-1)^2-4\cdot(-1)+4=1+4+4=9 \\ f(0)=0^2-4\cdot0+4=4 \\ f(1)=1^2-4\cdot1+4=1-4+4=1 \\ f(2)=2^2-4\cdot2+4=4-8+4=0 \\ f(3)=3^2-4\cdot3+4=9-12+4=1 \end{gathered}

The table is:

If we use this values and plot them in the cartesian plane.

We get:

And now if we plot a line that connects the points, we get the graph of the quadratic equation:

Since the problem ask us to find the value of x for which f(x) = 0, we can see both in the table and in the graph that this value is x = 2

6 0
1 year ago
8x^2+3xy+4y^2_12x^2+3xy-5y^2
antiseptic1488 [7]

Answer:

- 4x² + 6xy - y²

Step-by-step explanation:

8x² + 3xy + 4y² - 12x² + 3xy - 5y² ← collect like terms

= (8x² - 12x² ) + (3xy + 3xy) + (4y² - 5y²)

= - 4x² + 6xy - y²

7 0
2 years ago
Read 2 more answers
The expression to find the perimeter of a rectangle is 2(length + width). What is the perimeter, in units, of a rectangle of len
harina [27]

Answer:

OPTION B

1\frac{2}{7}units

Step-by-step explanation:

1. You have the following formula for calculate the perimeter of a rectangle:

P=2(l+w)

Where l is the lenght and w i the width.

2. Therefore, if the rectangle has the following dimensions:

l=\frac{1}{7}units\\\\w=\frac{1}{2}units

You can substitute these values into the formula shown above to calculate the perimeter of a rectangle. Therefore, you obtain the following result:

P=2(\frac{1}{7}units+\frac{1}{2}units)=\frac{9}{7}units or 1\frac{2}{7}units

5 0
3 years ago
Read 2 more answers
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