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3 years ago

What is the product of (2x-1) (x+5)?

Mathematics

1 answer:

Sever21 [200]3 years ago

6 0

Answer:

2x^2+9x-5

Step-by-step explanation:

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Given the volume of a rectangular prism is 192 and the length is four more than the width and the height is 6, what is the surfa

wolverine [178]

Answer:

something

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3 years ago

Find the sum of a finite geometric sequence from n = 1 to n = 7, using the expression −4(6)n − 1.

Verizon [17]

Answer:

Step-by-step explanation:

The formula of a sum of terms of a gometric sequence:

$S_n=a_1\cdot\dfrac{1-r^n}{1-r}$

a₁ - first term

r - common ratio

We have

$a_n=-4(6)^{n-1}$

Calculate a₁. Put n = 1:

$a_1=-4(6)^{1-1}=-4(6)^0=-4(1)=-4$

Calculate the common ratio:

$r=\dfrac{a_{n+1}}{a_n}\\\\a_{n+1}=-4(6)^{n+1-1}=-4(6)^n\\\\r=\dfrac{-4(6)^n}{-4(6)^{n-1}}=6^n:6^{n-1}\\\\\text{use}\ a^n:a^m=a^{n-m}\\\\r=6^{n-(n-1)}=6^{n-n+1}=6^1=6$

$\text{Substitute}\ a_1=-4,\ n=7,\ r=6:\\\\S_7=-4\cdot\dfrac{1-6^7}{1-6}=-4\cdot\dfrac{1-279936}{-5}=-4\cdot\dfrac{-279935}{-5}=(-4)(55987)\\\\S_7=-223948$

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4 years ago

Utilizando a calculadora determine o valor aproximado de raiz quadrada de

Zielflug [23.3K]

Answer:

i think D or F

Step-by-step explanation:

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3 years ago

Read 2 more answers

Pls help ima mark BRAINLIST and give u a like

sladkih [1.3K]

Answer:

Step-by-step explanation:

You can tell C is the right answer because one of the inequalities is a vertical line at y=3, which rules out all the other answers. However, if you continue to look at the 2nd inequality, you find the equation is x + y > 2, because the slope is -1 and the y-int is 2.

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3 years ago

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Which polynomial has a leading coefficient of 4 and a degree of 3?

Sedbober [7]

(3)

as 4x + -3^3 + 212

(Coefficient of the leading x is 4 and the power of the highest power term is 3) (it isn’t in correct polynomial form, however)

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3 years ago