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yan [13]
3 years ago
12

What is the sum of the polynomials?

Mathematics
2 answers:
Monica [59]3 years ago
8 0

Answer:

The answer is B.

Step-by-step explanation:

Allisa [31]3 years ago
4 0

Answer:

( -  {x}^{2}  + 9) + ( - 3 {x}^{2} - 11x + 4) \\  -  {x}^{2}   + 9 - 3{x}^{2}  - 11x + 4 \\ =   - 4 {x}^{2}   - 11x + 13

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Given that x= –1/2 and y = 4 , evaluate 3x²y + xy²​
zvonat [6]

Answer:

-5

Step-by-step explanation:

3x²y + xy²​

Let x = -1/2 and y = 4

3(-1/2)^2 (4) + (-1/2) (4)^2

Exponents first

3(1/4) (4) + (-1/2) 16

Multiply

3 - 8

Subtract

-5

​

7 0
3 years ago
Read 2 more answers
Find the measure of each side of this triangles. Answer in exact form. ​ Find x and y​
Kazeer [188]
I think the answer is 5
3 0
3 years ago
A supervisor must split 60 hours of overtime between five people. One employee must be assigned twice the number of hours as eac
Nezavi [6.7K]
<h3>4 people do 10 hours and one person does 20 hours</h3>

<em><u>Solution:</u></em>

Given that,

A supervisor must split 60 hours of overtime between five people

One employee must be assigned twice the number of hours as each of the other four employees

Let  "x" be the number of hours overtime per person.

One person does 2x hours of overtime

Which means,

(number of hours overtime per person)(6 person) = 60 hours

6x = 60

x = 10

Thus, 4 people do 10 hours and one person does 20 hours

6 0
3 years ago
Find the surface area of the pyramid. Correct answer will be marked brainliest!!!!
stepladder [879]

Answer:

178.3 mm²

Explanation:

The surface area of the regular pyramid is equal to the sum of the base and lateral areas:()

5 0
3 years ago
What is the exact value of cos (67.5° )?
Brilliant_brown [7]

Answer:

0.38268343

Step-by-step explanation:

cos( 67.5 )

Rewrite  

67.5

as an angle where the values of the six trigonometric functions are known divided by  2 . cos ( 135\ 2)

Apply the cosine half-angle identity.

±

√

1

+

cos

(

135

)

2

 

Change the  

±

to  

+

because cosine is positive in the first quadrant.

√

1

+

cos

(

135

)

2

Simplify  

√

1

+

cos

(

135

)

2

√

2

−

√

2

2

The result can be shown in multiple forms.

Exact Form:

√

2

−

√

2

2

Decimal Form:

0.38268343

…

6 0
3 years ago
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