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eduard
3 years ago
12

Which number sentence is true? A. 3.4 x (-3.4) = 11.56 B. 3.4 x 3.4 = 11.56 C. -3.4 x (-3.4) = -11.56 D. -3.4 x 3.4 = 11.56

Mathematics
2 answers:
cupoosta [38]3 years ago
7 0

Answer:

The answer is b. i just took the test

Step-by-step explanation:

avanturin [10]3 years ago
3 0

answer b is true 3.4x3.4 = 11.56

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What is the property 389•0=0
Ghella [55]

Multiplication Property of Equality, i'm pretty sure is your answer you are not very clear in the question

6 0
3 years ago
Use a protractor to draw a quadrilateral so that three of its four sides measure 5 centimeters each. The angles between these si
Anna11 [10]

The length of the third side of the quadrilateral is 7.5 cm.

<h3>Quadrilateral</h3>

A quadrilateral is a polygon that has four sides and four angles. The sum of interior angles in a quadrilateral is 360°. Types of quadrilateral are square, rectangle, rhombus, kite and so on.

Let x represent the length of the third side, hence:

x = 5 + (5 * sin(20)) + (5 * sin(10)) = 7.5 cm

The length of the third side of the quadrilateral is 7.5 cm.

Find out more on Quadrilateral at: brainly.com/question/16691874

8 0
2 years ago
Help me plssssssssssss....<br>I will give brainlist <br>​
olya-2409 [2.1K]

Answer:

C) 1/3

Step-by-step explanation:

First look at equation: 3x+y=1

re-write as y=mx+b

y=-3x+1

so the slope of this equation i s-3

so if a line is perpendicular to the above equation,

its slope will be reciprocal negative which is 1/3

6 0
2 years ago
If DM=35, what is the value of r ?
balu736 [363]

Answer:

r=12.5 units

Step-by-step explanation:

Well assuming that DM means diameter of a circle, then r should be the radius of the circle.

Diameter of a circle is twice the radius of the circle, hence with the value of Diameter, you should half it to get the value of radius.

Given  diameter =25

Radius will be= 25/2 = 12.5 units

7 0
3 years ago
When x-y=3 work out the value of y-x
GalinKa [24]

The value of y-x is (-3)

<u>Solution:</u>

Given: The value of x-y=3

To find: The value of y-x

\bold{x-y=3\rightarrow (1)}

Let's multiply the equation (1) by (- 1) on both sides,

\Rightarrow\bold{(x - y)\times(- 1) = 3\times(- 1)}

\Rightarrow\bold{-(x-y)=-3}

On multiplying the sign,

\Rightarrow\bold{(-x+y)=-3}

The above equation can also be written as,

\Rightarrow\bold{y-x=-3\rightarrow \text{(The required equation)}}

<u>Multiplication of signs:</u>

\Rightarrow( + )\times( + ) = ( + )

\Rightarrow( + )\times( - ) = ( - )

\Rightarrow( - )\times( + ) = ( - )

\Rightarrow( - )\times( - ) = ( + )

In simpler terms, when we multiply two integers with the same signs, the result is always positive and when we multiply two integers with different signs, the result is always negative.

5 0
3 years ago
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