3 years ago

Please do questions 18-20

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

6 0

Answer:

Step-by-step explanation:

18.-1139/500

19-21/20

20. 30/23

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5y^2+5−4−4y^2+5y^2−4x^3 −1

vredina [299]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{4 {x}^{3} + 6 {y}^{2} }}}}}$

Step-by-step explanation:

$\sf{5 {y }^{2} + 5 - 4 - 4 {y}^{2} + 5 {y}^{2} - 4 {x}^{3} - 1}$

Collect like terms

⇒ $\sf{ 4 {x}^{3} + 5 {y}^{2} - 4 {y}^{2} + 5 {y}^{2} + 5 - 4 - 1}$

⇒ $\sf{4 {x}^{3} + {y}^{2} + 5 {y}^{2} + 5 - 4 - 1}$

⇒ $\sf{4 {x}^{3} + 6 {y}^{2} + 5 - 4 - 1}$

Calculate

⇒ $\sf{4 {x}^{3} + 6 {y}^{2} + 1 - 1}$

⇒ $\sf{4 {x}^{3} + 6 {y}^{2} }$

Hope I helped!

Best regards! :D

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3 years ago

This year, a small business had a total revenue of $ 62 , 100. If this is 35 % more than their total revenue from the previous y

Olegator [25]

Answer:

$46000

Step-by-step explanation:

if x represents the previous years revenue, and they made 35% more than x, we need to find what 35% of x is and then add it to x to get the new total, so the equation becomes:

x + .35x = 62100

1.35x = 62100

x = 46000

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3 years ago

Read 2 more answers

19 is greater than the sum the number n and 3

masha68 [24]

Your answer should be 19>n+3

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2 years ago

What is the simplest form of the monomial given in factored form

IRINA_888 [86]

8d³e²f. ..................................

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3 years ago

Can someone please help me

Salsk061 [2.6K]

Answer:

Step-by-step explanation:

Area of pool = l × b

l = 6x and b = 3x - 5

Area = 6x(3x - 5)

Area = 18x² - 30x

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3 years ago