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Ad libitum [116K]
3 years ago
8

Please Help me !!Q 1,2,3

Mathematics
1 answer:
Virty [35]3 years ago
4 0
The area of a parallelogram is the product of the length of the base and the height measured perpendicular to the base.

1i) (20 cm)*(12 cm) = 240 cm^2

2ii) (7 cm)*(7.5 cm) = 52.5 cm^2

3iii) 27 cm^2 = (6 cm)*h
.. h = (27 cm^2)/(6 cm) = 4.5 cm
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What substitution should be used to rewrite 4x^4-21x^2+20=0 as a quadratic equation
Andreyy89

let y = x^2

4y^2 -21y + 20 = 0

solve for y

then substitute back in to get x

8 0
3 years ago
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Can somebody please show me how to do this problem
tia_tia [17]

Answer:

  • g(20) > f(20)
  • g(x) exceeds f(x) for any x > 4

Step-by-step explanation:

As with most graphing problems not involving straight lines, it works well to start with a table of values. Pick a few values of x and compute f(x) and g(x) for those values. Plot the points and draw a smooth curve through them.

As in the attached, your table will show that there are two points of intersection between f(x) and g(x), and that for values of x more than 4, g(x) becomes much greater very quickly. Both curves rapidly reach the top of your graph space.

To find whether f(20) or g(20) is greater, you can evaluate the functions for that value of x.

  f(20) = 20² = 400

  g(20) = 2²⁰ = 1,048,576

Clearly, g(20) has a greater value.

8 0
3 years ago
Miss Kirkland Works 40 hours on Mondays in 8 hours on Tuesdays in the school library during one week in May she worked 1/4 of he
Rashid [163]

Answer:

She worked 12 hours for the week

Step-by-step explanation:

Given that :

Hours worked :

Mondays = 40 hours

Tuesdays = 8 hours

If 1/4 of regular hours was worked in a certain week, the number of hours worked that week can be calculated thus ;

1/4 (Monday hours + Tuesday hours)

1/4(40 + 8)

(1/4 * 40) + (1/4 * 8)

10 + 2

= 12 hours

8 0
2 years ago
PLEASE HELP IM IN A HURRY
Liula [17]

Answer:

The area of the figure composed of a parallelogram, a square and a rectangle is 126 in².

Step-by-step explanation:

Hope I could help!

7 0
3 years ago
What term generally describes small chunks of rocks and debris in space? meteorites meteoroids meteors meteorides
deff fn [24]

Answer:

meteoroids

Step-by-step explanation:

5 0
3 years ago
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