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3 years ago

Lesson 2 Quiz please help ❗️

Mathematics

1 answer:

jeka943 years ago

8 0

It’s going to be C.

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<img src="https://tex.z-dn.net/?f=7%20-%208%20%5Cdiv%204%28%20%7B3%7D%5E%7B2%7D%20%20-%201%29" id="TexFormula1" title="7 - 8 \di

Aleonysh [2.5K]

Use PEMDAS

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

$7-8\div4\cdot(3^2-1)=7-2\cdot(9-1)=7-2\cdot8=7-16=-9$

4 0

3 years ago

Prove the polynomial identity.

Kaylis [27]

Answer:

Proven

Step-by-step explanation:

We prove the polynomial with factorization. We must first simplify the expression before we can factorize:

$(4\cdot{x^2}-2)\cdot{(4\cdot{x^2}-2)}-16\cdot{x^4}$

$16\cdot{x^4}-8\cdot{x^2}-8\cdot{x^2}+4-16\cdot{x^4}$

$4-16\cdot{x^2}$

4 is the common number and we can take it out of the expression:

$4\cdot{(1-4\cdot{x^2})}$

We can factorize further with the x term being zero. For this to be true we must have -2x and 2x to cancel out and therefore the expression is proven:

$4\cdot{(1-2\cdot{x})}\cdot{(1+2\cdot{x})}$

5 0

3 years ago

What is the equation of the line with a y-intercept of −10 and a slope of 3

Anika [276]

Step-by-step explanation:

we have y intercept -10

and slope 3

we know the equation of line in slope -intercept form

y=mx+b

where m is slope and b is y-intercept

so the final equation would be

y=3x-10

5 0

3 years ago

The sum of three consecutive odd numbers is 51. Find the numbers. Show your work and

Pachacha [2.7K]

15,17,19 are all odd numbers and add to 51

4 0

3 years ago

Simplify square root of -13

tino4ka555 [31]

Answer:

$\sqrt{13i}$

Step-by-step explanation:

Theoretically, there is not square root of neither 13 nor a negative number so the special symbol is used to represent the square root of a number.

8 0

3 years ago