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2 years ago

PLEASE HELP ME IM STUCK

Mathematics

2 answers:

Tanya [424]2 years ago

8 0

Answer:

Step-by-step explanation:

$(5x^{2} + 7) - (3x - 2)\\5x^{2} + 7 - 3x - (-2)\\5x^{2} + 7 - 3x + 2\\ B - 5x^{2} - 3x + 9\\$

Tems11 [23]2 years ago

3 0

Answer:

5x^2 -3x +9

Step-by-step explanation:

To subtract, line up the common terms. I add a 0 term to keep the terms in line.

5x^2 + 0x +7

- (0x^2 +3x- 2 )

------------------------

Distribute the negative sign.

5x^2 + 0x +7

- 0x^2 -3x + 2

------------------------

5x^2 -3x +9

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What is the value of **y** where the two lines are equal?

Novosadov [1.4K]

Answer:

y = - 1

Step-by-step explanation:

The 2 lines are equal at the point of intersection

The point of intersection is (2, - 1 ) with y = - 1

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3 years ago

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Enzo is building a dog run that measures 10 feet by 9 feet. How many feet of fencing does he need to fence in the area?

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2 years ago

Can you show all steps to simplify (3x-4)+(x+3)^2

ella [17]

(3x-4)+(x+3)^2
= 3x - 4 + x^2 + 6x + 9 .........(expand using (a+b)^2 = a^2 + 2ab + b^2)
= x^2 + 9x + 5 ..........(combine like terms and simplify)

hope that helps

3 0

2 years ago

Any time Speedy the Sloth is not sleeping, she drinks chamomile tea at a steady rate of 2/7 of a cup per hour. Yesterday, she dr

Nitella [24]

Answer:

She stayed awake for 295 minutes today

Explanation:

We are given that:

Yesterday, she drank one cup

Today, she drank $\frac{17}{42}$ of a cup more than yesterday

This means that:

Number of cups she drank today = $1+\frac{17}{42}=1\frac{17}{42}cups$

Now, we know that she drinks $\frac{2}{7}$ of a cup per hour any time she is not sleeping

We use cross multiplication to get the time she took to drink $1\frac{17}{42}$ cups

1 hour ...........................> $\frac{2}{7}$ of a cup

?? hours ......................> $1\frac{17}{42}$ cups

Time taken = $\frac{1\frac{17}{42}*1 }{\frac{2}{7} } = \frac{59}{12} = 4\frac{11}{12} hours$

This means that she was awake for $4\frac{11}{12}$ hours

Finally, we convert this to minutes:

Knowing that 1 hour has 60 minutes, therefore:

She stayed awake for $4\frac{11}{12} * 60 = 295$ minutes

Hope this helps :)

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3 years ago

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Given the function f(x)=4|x-5|+3 for what values of x is f(x)=15

Andreyy89

Answer:

{2, 8}

Step-by-step explanation:

We want to find x for ...

15 = 4|x -5| +3

12 = 4|x -5| . . . . subtract 3

3 = |x -5| . . . . . . divide by 4

±3 = x -5 . . . . . . show the meaning of absolute value

5 ±3 = x = {2, 8} . . . . . add 5

The values of x for which f(x) = 15 are 2 and 8.

3 0

3 years ago