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vodka [1.7K]
3 years ago
14

Find the area of the triangle that has a base of 4.2 mm and a height of 1.5 mm. 2.85 mm2 6.3 mm2 3.15 mm2 5.7 mm2

Mathematics
2 answers:
Readme [11.4K]3 years ago
7 0

Answer:

Step-by-step explanation:

Advocard [28]3 years ago
4 0

Answer: 3.15 mm²

Step-by-step explanation:

First, we multiply the height by the base: 4.2 x 1.5 = 6.3

But, since this is a triangle, we have to divide this number by 2: 6.3 / 2 = 3.15

Hope this helps you!

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Determine whether the following sequence is geometric. If​ so, find the common ratio.
Debora [2.8K]

The sequence is geometric and the common ratio is 2

7 0
3 years ago
Solve for n.<br> n^2–15n–16=0
Fofino [41]
N =  {15   +-  root of ( 225 + 64)  } / 2
  =  {15  +-  root of 289  } / 24
  = 15 + 17 } / 2   or  { 15 -17 } /2 
 = 16  or  -1


5 0
3 years ago
The area of a trapezium is 800 cm2
svlad2 [7]

Answer:

The distance between the parallel sides is 20cm.

Step-by-step explanation:

Area of a trapezoid:

A=\frac{a+b}{2}\times h

where a and b are the 2 bases, and h is the height. The value we're trying to find here is the height.

3 of the 4 variables in this equation are already given:

A = 800

a = 48

b = 32

Just plug those in and solve for h:

\rightarrow 800=\frac{48+32}{2}\times h\\\rightarrow 800=\frac{80}{2}\times h\\\rightarrow 800=40\times h\\\rightarrow 800\div40=h\\\rightarrow h=20

5 0
3 years ago
Read 2 more answers
Which is a correct first step for solving this equation?<br> - 32 + 2 - 52 - 7 = 4x + 2
MArishka [77]

Answer:

-8x - 5 = 4x + 2

6 0
2 years ago
1+4(6p-9) simplified
snow_lady [41]

Answer

24p+ (-31)

Step-by-step explanation:

  1. P.EM.D.A.S
  2. 4*6p=24p
  3. 4*-9=-36
  4. now it looks like: 1+4+24p+-36
  5. now for addition 1+4+24p+-36= 24p+ (-31)
5 0
3 years ago
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