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2 years ago

Which statement best describes the area of Triangle ABC shown below?

Mathematics

1 answer:

melamori03 [73]2 years ago

5 0

Answer: It is one-half the area of a rectangle with sides 2 units × 3 units.

It is twice the area of a square of side length 3 units.

It is one-half the area of a square of side length 3 units.

Step-by-step explanation:

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Using Euler’s formula, how many edges does a polyhedron with 20 faces and 12 vertices have?

astra-53 [7]

Euler's formula for a polyhedron is given by:

$\begin{gathered} F+V=E+2 \\ \text{where,} \\ F=\text{faces} \\ V=\text{vertices} \\ E=\text{edges} \end{gathered}$

Make E, the subject of the formula:

$\begin{gathered} F+V=E+2 \\ E=F+V-2 \end{gathered}$

Put F = 20, V = 12, to obtain E,

$\begin{gathered} E=20+12-2 \\ E=30 \end{gathered}$

Therefore, there are 30 edges

3 0

11 months ago

Find f(-3) for f(x)=3x^2+5x-14

Afina-wow [57]

Answer:

-2

Step-by-step explanation:

f(x)=3x^2+5x-14

f(-3)=3(-3)^2+5(-3)-14

f(-3)=3(-3)(-3)-15-14

f(-3)=3(9)-29

f(-3)=27-29

f(-3)=-2

8 0

3 years ago

Read 2 more answers

Given the functions below, find (g * h)(1). g(x) = x^2 + 4 + 2x. h(x) = -3x + 2

pshichka [43]

Answer:

Step-by-step explanation:

g(x) = x² + 2x+4

h(x) = -3x+2

(g*h)(1) is the same as

g(h(1)) , next solve for h(1) first by substituting in h(x), x with 1

g( h( x= 1)) = g( -3*1 +2) = g( -1) so substitute in g(x) , x with -1

g(x= -1) = (-1)² +2(-1) +4 =1-2+4 =3

7 0

3 years ago

17,22,36,55,61,79 what is the median

Lunna [17]

Median is the middle number. To find median, the numbers must be ordered from least to greatest. The numbers are already ordered.

$17,22,36,55,61,79$

The middle numbers are 36 and 55, with 2 numbers on each side.

a, b, c, d, e, f

Add the 2 numbers and divide by 2

$36 + 55 = 91$

Now divide by 2

$91 \div 2 = 45.5$

The median is 45.5

6 0

3 years ago

Read 2 more answers

When one half of a number is added to one third of a number, the answer is 30. find the number

ANTONII [103]

Answer 36

Step-by-step explanation:

4 0

2 years ago