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RoseWind [281]
3 years ago
14

If a • b > 0 and a < 0, what must be true about b?

Mathematics
1 answer:
Musya8 [376]3 years ago
8 0

Answer:

It is a negitive number

Step-by-step explanation:

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9) p(a) = a) – 3a; Find p(-2)<br> A) 18<br> B) 198<br> C) -110<br> D) -2
Afina-wow [57]
ANSWER: B)198



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6 0
2 years ago
Find the domains of the following expressions: 5/the square root of 5-5x
AleksandrR [38]
Interval notation

(-infinity sign, 1)

Set-builder notation

{x|x less than equal to 1}
7 0
3 years ago
Can you check my answers and help with number 3?
mamaluj [8]

Answer: Question 1 :B,D.

Question 2:option B,

Question 3:Degree=5.

Question 4:option D.

Question 5: option c.


Step-by-step explanation:

1) A polynomial can not have any exponent as a variable or a fraction.

Options B and D are polynomials.

2) The polynomial is having 3 terms and is of degree 3.so it is a cubic trinomial Option B.

3) Degree is the highest power of the variables in the terms .The term 6x^{3} y^{2} has the power=3+2=5

So degree =5.

4)(5x-2+3x^{2} )+(4x+3)=3x^{2} +5x+4x-2+3=3x^{2}+9x+1.

Option D


5)(5x^{2} +2x-5)-(3x^{2}+3x+1)= 5x^{2}+2x-5-3 x^{2}-3x-1

Simplifying like terms,

=2x^{2}-x-6.

Option c.


6 0
3 years ago
Write an equation that represents the total cost for pop music bundles. Write another equations to represent the total cost for
Anestetic [448]

Answer:

Equation for the total cost for pop music bundles = $ 1200 x + 300

Where variable is the Cost.

Equation for the total cost for rock music bundles = $ 950 x + 250

Where variable is the Cost.

Step-by-step explanation:

P.S - The exact question is -

Given - The Music Express is going to buy music bundles from a

             company that is going out of business. The company

             charges different amounts for bundles of pop and rock

             music:

             Cost for each pop music bundle is $1200

             Cost for each rock music bundle is $950

             One - time fee for rights to the pop music is $300

             One - time fee for rights to the rock music is $250.

To find - Write an equation that represents the total cost for pop

               music bundles.

              Write another equations to represent the total cost for rock

              music bundles.

              Identify the variables in the equations.

Proof -

Given that,

Cost for each pop music bundle is $1200.

Cost for each rock music bundle is $950.

One - time fee for rights to the pop music is $300.

One - time fee for rights to the rock music is $250.

Let the total music bundles buy = x

Now,

Given, Cost for 1 pop music bundle = $1200

⇒Cost for x pop music bundles = $ 1200 x

Also given,

One - time fee for rights to the pop music is $300.

∴ we get

Equation for the total cost for pop music bundles = $ 1200 x + 300

Where variable is the Cost.

Now,

Given, Cost for 1 rock music bundle = $950

⇒Cost for x pop music bundles = $ 950 x

Also given,

One - time fee for rights to the pop music is $250.

∴ we get

Equation for the total cost for rock music bundles = $ 950 x + 250

Where variable is the Cost.

5 0
3 years ago
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