MATHEMATICS MIDDLE SCHOOL

A triangle has a height of 18 centimeters and a base of 3.5 centimeters. What is the area of the triangle?

Answers

Answer 1
Answer:

Answer:

31.5 cm^2

Step-by-step explanation:

The formula for the area of a triangle is 1/2 x (b x h)

in the provided question -

b = 3.5 cm

h = 18cm

thus the area of the triangle will be -

1/2 x (3.5 x 18)

= 1/2 x 63

= 31.5 cm^2

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Which expression is equivalent to (-2)(a+6)?a.) -2a+6b.) 2a+12c.) -2a-12d.) -2a+12

Please do these three and show work

Answers

Answer:

2)16.5

Step-by-step explanation:

step1:v/2.2 -0.1=7.4

         add 0.1 on both sides

step2:v/2.2=7.5

       multiply by 2.2 on both sides

step3:v=16.5

2) v/2.2 - 0.1 = 7.4

   v/2.2 = 7.4 + 0.1

   v /2.2 = 7.5

   v = 7.5 * 2.2

   v = 16.5


4) -1.3g + 1.9 = -11.1

    -1.3g = -11.1-1.9

    -1.3g = -13

     g = -13/-13

      g = 1


6) -14.3 = -1.4 -3d

   -14.3 + 1.4 = -3d

    -12.9 = -3d

    3d = 12.9

    d = 12.9/3

    d= 4.3

All squares are parallelograms?

Answers

yes since the four sides are always parallel in a square 
Yes, there is a theorem used in geometry and it states, "Definition of a Parallelogram: is a quadrilateral who's opposite sides are parallel." Since a square has all parallel sides, it fits the definition and is therefore a parallelogram.

Hope this helps!!!

Find the mean, median, lower Q, upper Q, Interquartile range (IQR), mode, and range for the following data:3, 3, 7, 21, 2, 5, 16, 58, 2, 9, 2, 2

what is the MODE:

what is the UPPER Q:

Answers

The mode is 2 and the UPPER Q is 12.5
The mode is 2 because mode means it appears more than once mode=more

(4a-5)+(3a+6)

Adding polynomials

Answers

(4a-5)+(3a+6)=
=4a-5+3a+6=
=7a+1
(4a-5)+(3a+6)=\n 4a-5+3a+6=\n 7a+1

Which one is the answer?

Answers

its dedpool!

the answer here is B!

hope this helps!

if i got it wrong please tell me in comments and i will edit my answer!

what is 14b+3a=91?

I need to find the values of  a and b please

Answers

14b+3a=91\ \ \ \Rightarrow\ \ \ \ 14b=-3a+91\ /:14\n \n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ b=- (3)/(14)a +6 (1)/(2) \n \n \n14b+3a=91\ \ \ \Rightarrow\ \ \ \ 3a=-14b+91\ /:3\n \n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ a=-4 (2)/(3)b +30 (1)/(3)
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