All categories

3 years ago

I need help on these 9 questions!!!!

Mathematics

1 answer:

sineoko [7]3 years ago

6 0

Answer:

Step-by-step explanation:

13. -2(4)= -8 14. 6(-5)= -30 15. 3(-5)(2)= -30

16. -12(4)= -48 17. -4(2)^2= -64 18. (-5)^2= -25

19. -5(-3)(4)= =60 20. 13(-5)(2)= -130. 21. 3(-3)= -9

Hope this helps!

You might be interested in

Use the following image to assist in your answer.<br> a =<br> - 6<br> - 9<br> - 4

vfiekz [6]

Step-by-step explanation:

Pythagoras' theorem for the smallest one :

$c^2 = 4^2 + 6^2$

$c^2 = 16 + 36$

$c^{2}$ = 52

Pythagoras' theorem for the middle one :

$b^{2}$ = $6^{2}$ + $a^{2}$

Pythagoras' theorem for the biggest one :

$(4+a)^2 = c^2 + b^2$

$16 + 8a + a^2 = 52 + b^2$

Using the formula before (for $b^2$ ) it becomes :

$16 + 8a + a^2 = 52 + (6^2 + a^2)$

$16 + 8a + a^2 = 52 + 6^2 + a^2$

$16 + 8a = 52 + 6^2$

16 + 8a = 52 + 36

16+8a = 88

8a = 88-16

8a = 72

$a = \frac{72}{8}$

a = 9

Verifying :

$b^2 = 6^2 + a^2$

$b^2 = 36 + 81$

$b^2 = 117$

$b^{2}$ = 117

The biggest one :

$(4+a)^2 = c^2 + b^2$

$(4+9)^2 = 52 + 117$

$13^2 = 169$

True

8 0

2 years ago

The parking garage has 9 rows with 10 parking spaces in each row. There are 8 empty spaces.How many spaces are filled?

andrew-mc [135]

Answer:

Step-by-step explanation:

&&'&_555555555----&&&&---

4 0

3 years ago

Read 2 more answers

What one of the shape has a flat surface

melisa1 [442]

Answer:

Cylinder

Step-by-step explanation:

A cylinder has a 2 flat surfaces.

1 on each side

Answer: Cylinder is the correct answer

Hope this helps.

4 0

3 years ago

12. Martina rents a room in her home to guests. She charges a $25 flat fee per night for one person. Additional guests are welco

gtnhenbr [62]

Answer:

Step-by-step explanation:

the answer is A

BECAUSE the fixed charged or the charged that is always there is 25 dollars plus and additional cost for 10 dollars per person plus additional cost depending on how many hours u stay past 10 am

6 0

3 years ago

Read 2 more answers

How does the graph of the function g(x) = 2x - 3 differ from the graph of f(x) = 2X?

fredd [130]

Answer:

Step-by-step explanation:

Ο Α.

A. It is moved up 3 units.

4 0

2 years ago