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noname [10]
4 years ago
6

What is 3(x-7x)-y and how do you do it?

Mathematics
1 answer:
svetoff [14.1K]4 years ago
5 0

3(x-7x)-y 3(-6x)-y -18x-y

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if someone wants to buy something that costs $750.000 and it’s 35% off, how much does it costs after the discount?
Serggg [28]

Answer:487.5

Step-by-step explanation:

if it is a 35% discount it means you are trying to find 65% of the number because 65+35=100%

to find 65%, you find 5% first, then multiply by 13 to get 65%.

to find 5%, you divide by 20.

750/20=37.5.

37.5*13=487.5

7 0
2 years ago
Does (1,6) make the inequality x<1 true
kari74 [83]

Answer: Yes

Step-by-step explanation: As long as they are 1 or above, 1 will be greater. If  you have a negative, it would be a no.

7 0
3 years ago
Find the coefficient of the squared term in the simplified form for the second derivative, f "(x) for f(x) = (x3 + 2x + 3)(3x3 −
diamong [38]

Use:\\(h(x)\cdot g(x))'=h'(x)g(x)+h(x)g'(x)\\\\h(x)=x^3+2x+3\to h'(x)=3x^2+2\\\\g(x)=3x^3-6x^2-8x+1\to g'(x)=9x^2-12x-8\\\\f(x)=(x^3+2x+3)(3x^3-6x^2-8x+1)\\\\f'(x)=(x^3+2x+3)'(3x^3-6x^2-8x+1)+(x^3+2x+3)(3x^3-6x^2-8x+1)'\\\\=(3x^2+2)(3x^3-6x^2-8x+1)+(x^3+2x+3)(9x^2-12x-8)\\\\=9x^5-18x^4-24x^3+3x^2+6x^3-12x^2-16x+2+9x^5-12x^4-8x^3+18x^3-24x^2-16x+27x^2-36x-24\\\\=18x^5-30x^4-8x^3-6x^2-68x-22

f''(x)=(18x^5-30x^4-8x^3-6x^2-68x-22)'\\\\=90x^4-120x^3-24x^2-12x-68\\\\Answer:\ \boxed{-24}

7 0
3 years ago
Read 2 more answers
How are squares and rectangles the same
OleMash [197]

Squares and rectangles are both: parallelograms and quadrilaterals.
5 0
3 years ago
Read 2 more answers
F(x)=22xplus 33 and ​g(x)=x2−44x−55​, find ​(g◦​f)(88​)
Law Incorporation [45]
F(x) = 22x + 33
g(x) = x² - 44x - 55
(g о f)(88) = (22(88) + 33)² - 44(22(88) + 33) - 55
(g о f)(88) = (1936 + 33)² - 44(1936 + 33) - 55
(g о f)(88) = (1969)² - 44(1969) - 55
(g о f)(88) = 3,876,961 - 86,636 - 55
(g о f)(88) = 2,790,325 - 55
(g о f)(88) = 3,790,270
5 0
4 years ago
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