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3 years ago

Help me please ! show ALL WORK and do it right .

Mathematics

1 answer:

Neporo4naja [7]3 years ago

3 0

Answer:

≈ 37%

Step-by-step explanation:

Percent decrease is calculated as

$\frac{decrease}{original}$ × 100%

decrease = $3.92 - $2.46 = $1.46, thus

percent decrease = $\frac{1.46}{3.92}$ × 100% ≈ 37%

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Plz help me if you use me for points you will get reported.

Zanzabum

Answer:

140.63 is the correct answer

Step-by-step explanation:

Since we have given that

Length of 1 square tile = 11.25 inches

Number of tiles to cover the length of floor = 12.5

We need to find the length of the floor.

So, Length of floor is given by

Length of 1 square tile × Number of tiles

Hence, the length of floor is 140.625 inches.

4 0

3 years ago

Read 2 more answers

41 coins, consisting of nickels and quarters, have a total value of $4.65. How many coins of each kind are there?

aivan3 [116]

You first have to make an simple equation.

$x$ = How many pennies

$y$ = How many quarters

After that, since a penny is 5 Cents and a quarter is 25 Cents, we make the equation as:

$5x + 25y = 465$ (cents)

To write the whole entire thing in an equation is:

$x + y = 41$

$y = 41 - x$ Since I brought the x from the left to right, we change the positive " $x$ " to negative " $y$ "

To bring the ' $y = 41 - x$ ' to $5x + 25y = 465$ , we get rid of the " $y$ "s from both equations.

Now, you are left with the simplified equation:

$5x+25(41-x)=465\\$

$25*41+5x-20x=465$

$-20x+25*41=465$

$-20x=465-(25*41)$

$-20x=465-1025$

$-20x=-560$

$20x=560$

$x=28$

Now you find the $y$ .

$x$ = 28

$28+y=41\\41-28=y\\y=13$

Conclude:

So the y was the quarter and the x was the pennies.

Quarters = 13

Pennies = 28

5 0

3 years ago

Find the area of trapezoid. Send a picture so I can understand the work you did.

inn [45]

I think is very complicated the way u set it up maybe try to put a picture for it

3 0

3 years ago

Linear Equations : <br><br><br> 3x - 5/3 = x - 3

Nataly [62]

Answer:

x=(-2/3)

Step-by-step explanation:

Looked it up on google and got that answer, also used an online linear equation calclator

8 0

3 years ago

How high is a tree that casts a 2222-ftft shadow at the same time a 44-ftft postpost casts a shadow which is 77-ftft long?

Zina [86]

Answer: The height of the tree is 12.57 ft.

Step-by-step explanation:

The height of a thing is proportional to the its shadow.

Let H = Height and S = length of shadow

Then by equation direct proportion , $\dfrac{H_1}{S_1}=\dfrac{H_2}{S_2}$ (i)

Given : A tree that casts a 22 ft shadow at the same time a 4 ft postpost casts a shadow which is 7-ft long.

Put $S_1=22 ,\ H_2= 4,\ \ S_2=7$ in (i), we get

$\dfrac{H_1}{22}=\dfrac{4}{7}\\\\ H_1=\dfrac{4}{7}\times22\approx12.57$

Hence, the height of the tree is 12.57 ft.

8 0

4 years ago