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3 years ago

Can you please help me

Mathematics

2 answers:

alexdok [17]3 years ago

6 0

The fist one is it increases I think and the other one is 4

puteri [66]3 years ago

4 0

Answer:

The first one

Step-by-step explanation:

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Danielle can run one mile in 8.835 minutes Alex can run 1 mile and 9.75 minutes how much longer in minutes does it take for Alex

hichkok12 [17]

Answer:

0.915 minutes

Step-by-step explanation:

First, take the 9.75 minutes that it takes Alex and the 8.835 minutes it takes Danielle.

Second, line up the numbers annexing zeros as placeholders as needed.

Third, subtract them

9.750

-8.835

-----------

0.915

7 0

3 years ago

Will give brainlest <br><br><br> thank you so much

kodGreya [7K]

Answer:

1. -1

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Step-by-step explanation:

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2 years ago

To simplify the expression 3+5×3-8÷4

oee [108]

Answer:

5x3

Step-by-step explanation:

this is the first step

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3 years ago

Negative three times a number plus four is no more than the number minus 8

ki77a [65]

Answer:

-3n+4< (or equal to) n-8

4 0

3 years ago

Read 2 more answers

You are designing a rectangular garden. the garden will be enclosed by fencing on three sides and by a house on the fourth side.

RUDIKE [14]

Suppose the dimensions of the rectangle is x by y and let the side enclosed by a house be one of the sides measuring x, then the sides that is to be enclosed are two sides measuring y and one side measuring x.

Thus, the length of fencing needed is given by

P = x + 2y

The area of the rectangle is given by xy,

i.e.

$xy = 288 \\ \\ \\ \\ \Rightarrow y= \frac{288}{x}$

Substituting for y into the equation for the length of fencing needed, we have

$P=x+2\left( \frac{288}{x} \right)=x+ \frac{576}{x}$

For the amount of fencing to be minimum, then

$\frac{dP}{dx} =0 \\ \\ \Rightarrow1- \frac{576}{x^2} =0 \\ \\ \Rightarrow \frac{576}{x^2} =1 \\ \\ \Rightarrow x^2=576 \\ \\ \Rightarrow x=\sqrt{576}=24$

Now, recall that

$y= \frac{288}{x} = \frac{288}{24} =12$

Thus, the length of fencing needed is given by

P = x + 2y = 24 + 2(12) = 24 + 24 = 48.

Therefore, 48 feets of fencing is needed to enclose the garden.

8 0

3 years ago