4 years ago

Name the Property of Equality that justifies this statement:

1 answer:

5 0

Symmetric because it is the same thing and also i really dont know so dont hmu im just tryna get points lol sorry for being garabage

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David pays a 20% income tax on his $2,100 salary. How many dollars is the tax?

Ganezh [65]

20% of 2100 is 420
So the tax is $420
Then 2100-420= 1680
So he has $1680 left after paying the tax.

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3 years ago

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I need help with question because I not very good a math please help

Fittoniya [83]

Sorry I am not good at math either

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3 years ago

What is the equivalent logarithmic form of the equation 4(10)1.5t=20?

Cloud [144]

Answer: t = 1/3

Divide both sides by 60.

4 x 10 x 1.5t = 20/60

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3 years ago

1) 3 (x - y)² - 10 (x-y) + 8

katovenus [111]

Answer:

$(3x-3y-4)(x-y-2)$

Step-by-step explanation:

Given expression:

$3(x-y)^2-10(x-y)+8$

Let u = (x - y):

$\implies 3u^2-10u+8$

To factor a quadratic in the form $ax^2+bx+c$ find two numbers that multiply to $ac$ and sum to $b$ :

$\implies ac=3 \cdot 8=24$

$\implies b=-10$

Therefore, the numbers are: -6 and -4.

Rewrite $b$ as the sum of these two numbers:

$\implies 3u^2-6u-4u+8$

Factor the first two terms and the last two terms separately:

$\implies 3u(u-2)-4(u-2)$

Factor out the common term (u - 2):

$\implies (3u-4)(u-2)$

Substitute back in u = (x - y):

$\implies (3(x-y)-4)((x-y)-2)$

Simplify:

$\implies (3x-3y-4)(x-y-2)$

3 0

2 years ago

1 less then the quotent of a number n and 6

Irina18 [472]

" the quotient " means divide

(n/6) - 1 <== ur expression

7 0

2 years ago

Read 2 more answers