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3 years ago

Im justso confused for that one

Mathematics

1 answer:

drek231 [11]3 years ago

3 0

What? What’s the question

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Solve please i’ll give brainliest

valina [46]

Answer:

3 is 60°, as well as 5 and 7 and the rest are 120°

Step-by-step explanation:

6 0

3 years ago

Describe how you would estimate the first number of the quotion for the division497÷22

liraira [26]

I would round them so it would be 500 divided by 20
The answer should be close to 25

4 0

4 years ago

Which phrase is a description of 7n+11?

ivann1987 [24]

Answer:

n=18

Step-by-step explanation:

7n+11?

n=7+11

7+11=18

n=18

4 0

3 years ago

Which would be the best method to use to solve the following equations? Explain your reasoning.

o-na [289]

A. square root property

$3x^2-192=0\\x^2-66=0\\x^2=66\\x= -\sqrt{66} or \sqrt{66}$

it has one value with x which is x^2 and it cn be easily solved without having to factorise, quadratic formula cant be used as it need ax^2+bx+c=0 format

B. factorising

$x^2-x-6=0\\x^2+2x-3x-6=0\\(x+2)(x-3)=0\\x+2=0 and x-3=0\\x= -2 \\x= 3$

i just felt like this was easier to factorise than the other 2 options left

C. Completing the square

$x^2-6x-7=0\\(x-3)^2=0\\x= -1\\x= 7$

same reason personal preference

D- Quadratic

$x^2-17x-7=0\\x=\frac{-(-17)+\sqrt{(-17)^2-4(1)(-7)} }{2(1)} \\x=\frac{-(-17)-\sqrt{(-17)^2-4(1)(-7)} }{2(1)}\\x=17.4\\x=-0.402$

the 17 kinda threw me off and i didnt wanna get on factorising or doing completing the square so quadratic formal

7 0

3 years ago

5 (3z-3) =30 it’s from delta math 8 grade

Mkey [24]

Answer:

$5$

Step-by-step explanation:

Substitute the value of the variable into the equation and simplify.

3 0

3 years ago

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