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gregori [183]
4 years ago
12

Find the value of 2a squared + 5b squared when a = -6 and b =2

Mathematics
1 answer:
jenyasd209 [6]4 years ago
5 0

92

given 2a² + 5b²

substitute given values for a and b into the expression

2(- 6)² + 5(2)² = (2 × 36 ) + (5 × 4) = 72 + 20 = 92


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Guven the following absolute value function sketch the graph of yhe function and find the domain and range. F (x) = |x + 3| - 1
lana66690 [7]

Answer:

See below

Step-by-step explanation:

The graph is formed from f(x) = |x|.

f(x) = |x| is shaped like a V with the vertex at  the origin and the slope of each arm = 1.  Then f(x) = |x + 3| will have the same shape but will be moved 3 units to the left so the vertex  is at (-3,0). The - 1  ( to give f(x) = |x + 3| - 1) translates the whole graph 1 unit down so the vertex is at the point (-3, -1).

The domain is All Real x and the range = All real values of f(x)

equal or greater than -1.

4 0
4 years ago
Is anyone good with geometry? If yes, please show your work on these questions so i can see how its done. C:
Dvinal [7]

(7)

if r perpendicular to s then angles 1,2,3,4=90 deg.

if t perpendicular to s then angles 5,6,7,8=90 deg.

If two different lines intersect a third line at the same angle then they must be parallel.

r and t intersect s at the angle 2=90 deg  and 6 = 90 deg, therefore r and t are parallel.

(6) use sum of angles in a triange =180 deg property.

first, the complement to 105 is an angle of 75 deg. then x=180-(24+75)=81 deg

x=81 deg

(5)

\angle STU=180-\angle STR=180- \angle SRT   \\\\\4x = 180-20=160\\\\x=40

(4) sum of angles = 180 deg

62 +45 + k = 180

k = 180 -107  = 73

k = 73


6 0
4 years ago
Thanks if you helped​
777dan777 [17]
Answer:

The slope is 0
The line is a horizontal line
The line has no y-intercept
3 0
3 years ago
The perimeter of a square is 54cm. Find the length of a diagonal, rounding
andreyandreev [35.5K]

Answer:

B. 19.1cm

Step-by-step explanation:

Perimeter of a square = 4 × length

Perimeter = 54cm

Perimeter of a square = 4 × length

54 = 4 × length

54 = 4l

Divide both sides by 4

l = 54 / 4

= 13.5cm

Find the length of a diagonal,

Diagonal = hypotenuse

Using Pythagoras theorem

Hypotenuse^2 = opposite^2 + adjacent^2

Opposite = adjacent in a square because of the equal length

Opposite = adjacent = 13.5cm

Hypotenuse^2 = opposite^2 + adjacent^2

= 13.5^2 + 13.5^2

= 182.25 + 182.25

Hypotenuse^2 = 364.5

Find the square root of both sides

√Hypotenuse^2 = √ 364.5

Hypotenuse = 19.09cm

To the nearest tenth = 19.1cm

B. 19.1cm

7 0
3 years ago
Determine the domain of the graph shown.<br> [0, 8]<br> [0, 24]<br> [0, 20]<br><br> [0, 10]
Luda [366]

Answer:

Step-by-step explanation:

0,20

8 0
3 years ago
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