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3 years ago

Write D +5+ D +5+ D +5+ D +5 as an equivalent expression by grouping like terms

Mathematics

1 answer:

Hitman42 [59]3 years ago

8 0

Answer:4D+20

Step-by-step explanation:

Simplified by grouping the D’s and and 5’s

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How do you write 143% as a decimal

umka2103 [35]

Answer:

1.43

Step-by-step explanation:

1.43 or 1 43/100 turned into a percent is 143%

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2 years ago

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Twenty-six , 2 tens 6 ones , 25, 20+6 which one is the odd one out?

Aneli [31]

Answer:

Step-by-step explanation:

twenty-six=26

2 tens 6 ones= 26

25=25

20+6=26

25 is the odd one out.

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2 years ago

The second one I don’t know it

loris [4]

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The third one $\sqrt[3]{15}$

Step-by-step explanation:

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3 years ago

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8x2 − 5 + 7x4 − 9x − x5

Veseljchak [2.6K]

Answer:

$=-\left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)$

Step-by-step explanation:

Factor out comon Term -1

$=-\left(x^5-7x^4-8x^2+9x+5\right)$

Factor $x^5-7x^4-8x^2+9x+5:\quad \left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)$

$x^5-7x^4-8x^2+9x+5$

Use the rational root theorem

$a_0=5,\:\quad a_n=1$

The dividers of $a_{0}$ : 1, 5, The dividers of $a_n$ : 1

Therefore, check the following rational numbers: ± $\frac{1,\:5}{1}$

$\frac{1}{1}$ is a root of the expression, so factor out $x-1$

$=\left(x-1\right)\frac{x^5-7x^4-8x^2+9x+5}{x-1}$

$\frac{x^5-7x^4-8x^2+9x+5}{x-1}=x^4-6x^3-6x^2-14x-5$

$=x^4-6x^3-6x^2-14x-5$

$=-\left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)$

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3 years ago

A board measures 2½m by 1¼m and costs 750 naira. calculate the cost of 1m² of the board.

maw [93]

Answer:

240naira

Step-by-step explanation:

The board measures 2½m by 1¼m

The area of the board is;

2½× 1¼ = 5/2 × 5/4 = 25/8 m²;

But 25/8 m² cost 750 naira;

Therefore 1m² cost 750 / 25/8

750 × 8/25 =

30 × 8

240naira

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3 years ago