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4 years ago

8

Your shopping list for this week consists of 6 items that are available at 2 different grocery stores and are featured in their

weekly ads. You want to do some comparison shopping and find the best price for each item.

1 answer:

Goryan [66]4 years ago

7 0

Maybe look on their website to see each price for an item

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What is the value of y in this simplified expression?<br> 11^-4<br> 11^-8 = 11^y<br> y = ?

kkurt [141]

Answer:

y = - 8

Step-by-step explanation:

${11}^{ - 8} = {11}^{y} \\ \therefore \: - 8 = y \\ \huge \purple{ \boxed{ \therefore \: y = - 8}}$

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3 years ago

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Which of the following is equivalent to (1/2)^-2t

Zepler [3.9K]

Answer:

Choice (3) $\left(2^2\right)^t$ is correct.

Step-by-step explanation:

Given expression is $\left(\frac{1}{2}\right)^{-2t}$

Now we need to simplify this and check which of the given choices best match with it.

$\left(\frac{1}{2}\right)^{-2t}$

$=\left(\frac{1}{2^1}\right)^{-2t}$

$=\left(2^{-1}\right)^{-2t}$ {using formula $=\frac{1}{x^m}=x^{-m}$ }

$=\left(2^{-1}\right)^{-2t}$ {using formula $=\left(x^m\right)^n=x^{\left(m\cdot n\right)}$ }

$=2^{\left(-1\right)\left(-2t\right)}$

$=2^{2t}$

$=\left(2^2\right)^t$ {using formula $=\left(x^m\right)^n=x^{\left(m\cdot n\right)}$ }

Hence choice (3) $\left(2^2\right)^t$ is correct.

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3 years ago

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3/4*x = 1/5<br> X=<br> A. 3 3/4<br> B. 11/20<br> C. 4/15<br> D. 3/20

Pepsi [2]

X = 1/5 ÷ 3/4
x = 1/5 × 4/3
x = 4/15

the answer is C

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3 years ago

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How do you identify perfect square trinomials and differences of square binomials for factoring?

hoa [83]

A perfect square is a number that can be expressed as the product of two equal integers. To determine that a trinomial is a perfect square we use the the discriminant given by:
b^2-4ac
where a,b and c have been obtained from the trinomial given by:
ax^2+bx+c;
if the value of the discriminant is a perfect square then the trinomial is a perfect square trinomial

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3 years ago

Convert 0.0000001 to a power of 10. 107 10−7 106 10−6

Westkost [7]

I think it's 10^-7 hope that helps

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3 years ago

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