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2 years ago

6

The total cost of 5 pencils and 1 protractor which costs $3.00 is twice the total cost of 3 pencils and 2 erasers that each cost

$0.40. What is the price of one pencil?

1 answer:

Stolb23 [73]2 years ago

4 0

Answer:1.73$ per pencile

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago

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Tell whether each function is linear or non-linear.

MrMuchimi

Answer:

Function A is non-linear and Function B is linear.

Step-by-step explanation:

Linear function:

Has the following format:

y = mx + b

In which m is the slope and b is the y-intercept.

In a linear function, when x changes by 1, y will always changes by the same amount.

Function A:

When x changes by 1, y can change by various amounts. So function A is non-linear.

Function B:

y = -x + 5

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3 years ago

Simplify the expression by using a double-angle formula or a half-angle formula. (a) cos2 θ 2 − sin2 θ 2

SCORPION-xisa [38]

If this is supposed to be
$cos^{2}θ-sin^{2}θ$
Then this can simply be reduced to
$cos2θ$
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4 years ago

Which is log x+ 6 log(x+7) written as a single logarithm.

Elina [12.6K]

Answer: option d.

Step-by-step explanation:

To solve this problem you must keep on mind the properties of logarithms:

$log(b)-log(a)=log(\frac{b}{a})\\\\log(b)+log(a)=log(ba)\\\\a*log(b)=log(b)^a$

Therefore, knowing the properties, you can write the expression gven in the problem as shown below:

$5logx+6log(x+7)=logx^5+log(x+7)^6=logx^5(x+7)^6$

Then, the answer is the option d.

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Anastasy [175]

I have already done this question. The correct answer is c

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4 years ago

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