3 years ago

Ruben has decided that all even number are composite since they can all be dovided by 2.Is Ruben correct?explain

Mathematics

1 answer:

IRISSAK [1]3 years ago

5 0

Yes. All even numbers are divisible by 2. Every single one of them

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Prove that the value of the expression 7^8–7^7 +7^6 is divisible by 43.

murzikaleks [220]

Step-by-step explanation:

1. if to evaluate the given experssion, then

7⁶(7²-7+1)=7⁶*43.

2. if to divide this evaluated expression by 43, then

7⁶*43/43=7⁶.

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3 years ago

I need help with this does anyone understand this?

soldier1979 [14.2K]

Answer:

Let y = f(x)

$= > y = \frac{19}{ {x}^{3} }$

$= > {x}^{3} = \frac{19}{y}$

$= > x = \sqrt[ 3]{ \frac{19}{y} }$

${f}^{ - 1} (x) = \frac{ \sqrt[3]{19} }{ \sqrt[3]{x} }$

<h2>option A</h2>

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6......................................... i mean this is probably wrong but yeah

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3 years ago

Name two customary units of length. Which measurement is more accurate?

prohojiy [21]

Inches
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3 years ago

BD bisects ∠ABC, m∠ABD=(7x−1)°, and m∠DBC=(4x+8)°. Find m∠ABD.

Naya [18.7K]

Answer:

m∠ABD = 20°

Step-by-step explanation:

The bisector makes angles ABD and BDC congruent, so ...

7x -1 = 4x +8

3x = 9 . . . . . . add 1-4x to both sides

x = 3

m∠ABD = (7x-1)° = (7·3 -1)°

m∠ABD = 20°

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3 years ago