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evablogger [386]

2 years ago

11

Combine like terms in the following expression: 2x+5y+7t+4p-x-4t+3y-4t-3p

1 answer:

Maslowich2 years ago

4 0

Answer:

Answer is option D. because 4p minus 3p is just p and D is the only option with just p.

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Hep me with this question

nasty-shy [4]

x=3 for both of the questions

6 0

2 years ago

Find the third term in the expansion of (a+b)^9 in the simplest form

forsale [732]

Answer:

$The\ third\ term\ is\ \boxed{36a^7b^2}\\$

Step-by-step explanation:

$\left(\begin{array}{c}9\\ 1\end{array}\right)=\dfrac{9}{1} =9\\\\\left(\begin{array}{c}9\\ 2\end{array}\right)=\dfrac{9*8}{2*1} =36\\\\\\(a+b)^9=a^9+\left(\begin{array}{c}9\\ 1\end{array}\right)a^8b+\left(\begin{array}{c}9\\ 2\end{array}\right)a^7b^2+....+b^9\\\\\\The\ third\ term\ is\ \boxed{36a^7b^2}\\$

6 0

2 years ago

Which expressions are equivalent to the expression 48a - 36b? Select All that apply.

matrenka [14]

Answer:

A. 30(18a - 6b) and D. 4(10a + 2a - 9b)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

90 is n multiplied by 123 write equation (IXL)

Gennadij [26K]

First translate words to symbols

The word is translates to =

The word multiplied translates to *

The letter n is a variable, do nothing with it

90=123n

P.S. If its multiplication and there is something to multiply with a variable

Dont do 123 * n or n * 123

Write it 123n (its the proper way)

8 0

2 years ago

What is 7P4<br><br><br><br> A: 28<br><br> B: 35<br><br> C: 210<br><br> D: 840

Semmy [17]

Answer:

D

Step-by-step explanation:

using the definition of n $P_{r}$ = $\frac{n!}{(n-r)!}$

where n! = n(n- 1)(n - 2)......× 3 × 2 × 1

here n = 7 and r = 4, hence

7 $P_{4}$

= $\frac{7!}{3!}$

= $\frac{7(6)(5)(4)(3)(2)(1)}{3(2)(1)}$ ← cancel 3 × 2 × 1 leaving

7 $P_{4}$ = 7 × 6 × 5 × 4 = 840 → D

4 0

2 years ago

Read 2 more answers