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BabaBlast [244]
3 years ago
7

Need help on #s 9 10 and 11 thx!

Mathematics
2 answers:
VikaD [51]3 years ago
3 0
9 is D. 10 is A. And 11 is either A or B. I am unsure about that last one...
I hope that helped. if I am wrong please correct me I like to learn from mistakes. but I am pretty sure that they are right...
malfutka [58]3 years ago
3 0
9. 4:2 which can be simplified to 2:1 which is d)

10. Plug in 4 for x and 55 for y which is a)

11. b)
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What is the value of x? Enter your answer in the box.
Radda [10]

Answer:

x = 8

y = 6

Step-by-step explanation:

First and foremost, it's an equilateral triangle, therefore all sides and angles are equal.

Knowing that the sum of angle in a triangle is 180°, therefore each angle is 60°.

Then equating (7x+4)° to 60, we have that,

7x+4=60

7x=60-4

7x=56

x=56÷7

x=8.

5 0
2 years ago
Please explain why i need help
insens350 [35]
(8•40) + (8•5) = 320 + 40 = 360
7 0
3 years ago
Need help please! what is the total length of a 20 mm steel coiled like a spring with a 16 turns and an outer diameter of 600 mm
Norma-Jean [14]

Answer:

L = 29,550 mm

Step-by-step explanation:

i think i've done this before.. but anyway Lets make it simple and easy.

Let A = 600mm

Let B = 300mm

Let C = 16 as number turns

Let d = 20mm

L = sqrt ((3.14 * (600 - 20))² + 300³)    * 16

L = 29,550 mm

4 0
4 years ago
Place the <,> or = symbols between the following:
spayn [35]
The choice A will be the correct choice dealing with proportion
6 0
3 years ago
Simplify the expression. Rewrite using only positive exponents.
Afina-wow [57]

Answer:

The answer is D

Step-by-step explanation:

((c^6d^5e^4)*(c^-3de^-2))^2\\

Reorder the terms

= ((e^4c^6d^5)*(e^-2c^-3d))^2\\

Calculate

= (e^4c^6d^5e^-2c^-3d)^2

Use the properties of exponents

= (e^2c^3d^6)^2

Therefore, the answer is c^6 d^12 e^4 or D

8 0
1 year ago
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