3 years ago

I need help with 18, 19, & 20

Mathematics

1 answer:

luda_lava [24]3 years ago

4 0

18. 17.9
19. 21.1
20. I cant see the numbers sorry; if the sides are 6, √85 than it should have an angle of 40.6

You might be interested in

What are the greatest common factors of 28,35 and 56.

Zinaida [17]

Answer:

Step-by-step explanation:

28 35 56

1 and 28 1 and 35 1 and 56

2 and 14 7 and 5 2 and 28

4 and 7 4 and 14

7 and 8

5 0

2 years ago

The vertex of the parabola below is at the point (3,2) and the point (4,6) is on the parabola. What is the equation of the parab

nata0808 [166]

Answer:

$\large\boxed{y=4(x-3)^2+2\ \bold{vertex\ form}}\\\boxed{y=4x^2-24x+38\ \bold{standard\ form}}$

Step-by-step explanation:

The vertex form of a parabola:

$y=a(x-h)^2+k$

(h, k) - vertex

We have the vertex at (3, 2) → h = 3 and k = 2.

Substitute:

$y=a(x-3)^2+2$

The point (4, 6) is on athe parabola. Put the coordinates of this point to the equation:

$6=a(4-3)^2+2$ subtract 2 from both sides

$6-2=a(1)^2+2-2$

$4=a\to a=4$

Finally:

$y=4(x-3)^2+2$ vertex form

use (a - b)² = a² - 2ab + b²

$y=4(x^2-6x+9)+2$ use the distributive property

$y=4x^2-24x+36+2$

$y=4x^2-24x+38$ standard form

6 0

2 years ago

Does it matter which two points you use to create a slope triangle?

Fynjy0 [20]

Answer:

yes

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What dose 9m = 4m +35 equal?

Umnica [9.8K]

Answer:

m=7

Step-by-step explanation:

9m=4m+35

move variable to the left

9m-4m=35

collect like terms

5m=35

divide both sides by 5

m=7

7 0

3 years ago

Which expression is equivalent to 18x+45 A-9(5x+2) B-9(2x+5) C-3(2x+15 D-3(6x-5)

makkiz [27]

I think the answer is B -9(2x+5)

3 0

2 years ago

Read 2 more answers