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Bond [772]
3 years ago
5

Cos87°cos33° - sin87°sin33°

Mathematics
1 answer:
alina1380 [7]3 years ago
6 0

Answer:

-\frac{1}{2}

Step-by-step explanation:

cos(87° + 33°) = cos(120°) = -\frac{1}{2}

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Is the polynomial prime? <br> 7x2-35x+2x-10
wolverine [178]

The given polynomial is not a prime polynomial.

Given the polynomials, we have to choose the polynomial which is prime.

A polynomial with integer coefficients that cannot be factored into lower degree polynomials is Prime polynomials.

7x^2-35x+2x-10

7x^2-33x-10

\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}

<h3>What is the formula for the quadratic roots?</h3>

\quad x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

\mathrm{For\:}\quad a=7,\:b=-33,\:c=-10

x_{1,\:2}=\frac{-\left(-33\right)\pm \sqrt{\left(-33\right)^2-4\cdot \:7\left(-10\right)}}{2\cdot \:7}

x_{1,\:2}=\frac{-\left(-33\right)\pm \sqrt{\left(-33\right)^2-4\cdot \:7\left(-10\right)}}{2\cdot \:7}

x_{1,\:2}=\frac{-\left(-33\right)\pm \:37}{2\cdot \:7}

x_1=\frac{-\left(-33\right)+37}{2\cdot \:7},\:x_2=\frac{-\left(-33\right)-37}{2\cdot \:7}

x=5,\:x=-\frac{2}{7}

Therefore the factor is (x-5) and (7x+2).

can be factored

∴ not a prime polynomial.

To learn more about the prime polynomial visit:

brainly.com/question/26388060

#SPJ1

4 0
2 years ago
Break apart the addends to find the sum 18+21
ololo11 [35]
We break apart the first numer:

10+8

the second:

20+1

and add like this:

18+21=10+8    +  20+1

now, we can mix up the order:

18+21=10+8    +  20+1= 10+20     + 8+1

add the parts:

18+21=10+8    +  20+1= 10+20     + 8+1=30+9=39




3 0
3 years ago
HELP!! express the following decimal as a percent. 1.544
Mashcka [7]
To convert 1.544 to percent multiply by 100

1.544 × 100 = 154.4 %
3 0
3 years ago
Read 2 more answers
What is the volume of a pyramid with base area B = 9 ft2 and height h = 11 ft?
guapka [62]
The answer is A. 33 ft3
6 0
2 years ago
Read 2 more answers
A circle graph has five
Norma-Jean [14]

Answer:

the missing section is 49%

Step-by-step explanation:

11 + 18 + 15 + 7= 51

51 + 49 = 100

add the percentages together and you get 100%

4 0
2 years ago
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