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nadya68 [22]
3 years ago
11

This is my last question. Please help me!

Mathematics
1 answer:
sesenic [268]3 years ago
3 0

Okay so first you want to simplify the given equation  (7x+3y)(7x-3y)

in order to do this you multiply the first number of the first equation (7x) with the first number of the second equation (7x) this gives you 49x^2

Now you want to multiply the second number of the first equation (3y) by the second number of the second equation (-3y) this gives you -9y^2

Its as easy as pie!

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When measuring volume of a cone, if the line goes all the way across the base, define this current value (what is the term for t
krek1111 [17]

Answer: the line across the circle is the diameter, you find diameter by multpyling radius by two

Step-by-step explanation:

6 0
3 years ago
An angle measures 84° What is the measure of its supplement?
Lesechka [4]

<u>Answer:</u>

Supplement of 84° is 96°

Complement of 54° is 36°

<u>Step-by-step explanation:</u>

1<u>) A supplementary angle is two angles that add up to 180°</u>

so to find the supplement of 84° ⇒  180°- 84° = 96°

2) <u>A complementary angle is two angles that add up to 90°</u>

so to find the complement of 54° ⇒ 90°- 54° = 36°

8 0
3 years ago
Which of the following would be an acceptable first step in simplifying the expression (cot x)/(1 - csc x) ?
alukav5142 [94]

Answer:

cotx(1+csc x)/(1-csc x)(1+csc x)

5 0
3 years ago
Read 2 more answers
Factorise <br>16x²y+8xy all divided by 32xy+16y​
Fed [463]

Answer:

3x^2+4x/16x+8

Step-by-step explanation:

6x²y+8xy/32xy+16y​

Factor the top and bottom

2xy(3x+4)/16y(2x)  -This is the most it can be factored but there is also another way (I'm not sure which one you're looking for)

The problem is that this is not simplified so in order to cancel things out the factored number should be the same.

2y(3x^2+4x)/2y(16x+8)

Cancel out 2y

3x^2+4x/16x+8

8 0
3 years ago
I need help on this please
Ludmilka [50]

circumference =2πr=2× 7 22  ×28=22×8 =176 cm

Area =πr 2 = 7   22 ×28×28=88×28 =2464 cm 2

<u><em>circumference=176 cm </em></u>

<u><em>Area= 2464 cm 2</em></u>

3 0
3 years ago
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