3 years ago

If T (n) = 2 -7n, what is the first term?

Mathematics

1 answer:

marin [14]3 years ago

6 0

$T(1)=2-7\cdot1=2-7=-5$

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You bought a magazine for $5 and four erasers. You spent a total of $25. How much did each eraser cost? Write the equation and s

Usimov [2.4K]

Answer:

$5\$

Step-by-step explanation:

Let x be cost of 1 eraser.

$5 +4x=25$

$4x=20$

$x=5$

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4 years ago

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Prove that 5^7+5^6 is divisible by 6.

pishuonlain [190]

Answer:

The Proof for $5^{7}+5^{6}\ is\ divisible\ by\ 6$ is below.

Step-by-step explanation:

To Prove:

$5^{7}+5^{6}\ is\ divisible\ by\ 6$

Proof:

We know law of indices

$a^{m}.a^{n}=a^{m+n}$

Therefore,

Step 1: Applying law of indices

$\dfrac{5^{7}+5^{6}}{6}=\dfrac{5^{6}.5^{1}+5^{6}}{6}$

Step 2: Taking common $5^{6}$ we get

$\dfrac{5^{7}+5^{6}}{6}=5^{6}\times (\dfrac{5^{1}+1}{6})$

Step 3: $5^{1} = 5$ so add 5 + 1 we get

$\dfrac{5^{7}+5^{6}}{6}=5^{6}\times \dfrac{6}{6}$

Step 4: Cancel 6 from both denominator and numerator we get

$\dfrac{5^{7}+5^{6}}{6}=5^{6}\times 1=5^{6}$ ...That is Divisible by 6 Proved

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3 years ago

Which price choice has the lowest unit price per ounce? (5 points) Choice A: 6 ounces of chocolate chips for $2.49. Choice B: 8

leonid [27]

2.49/6 = 0.415
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unit rates are equal :)

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4 years ago

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Answer:

Step-by-step explanation:

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3 years ago

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Sphinxa [80]

Answer:

The two equations are not equivalent and no property is used.

Step-by-step explanation:

54 - (30 - 8) ... (i)

(54 - 30) - 8 ... (ii)

Solving (i) and applying PEMDAS:

We open the brackets first;

54 - 30 + 8 = 54 + 8 - 30 = 32

Solving (ii) and applying PEMDAS:

We open the brackets first;

54 - 30 = 24

24 - 8 = 16

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3 years ago