Naomi used 100 tiles to create a design. Blue tiles make up 1/2 of the design. Another 15 tiles are green, and 1/5 of the tiles are yellow. The rest of the tiles are red. How many red tiles did Naomi use in her design? A. 15 tiles
B. 25 tiles
C. 65 tiles
D. 85 tiles

Answers

Answer 1

Answer:

Answer:

Naomi used 15 red tiles in her design.

Step-by-step explanation:

We need to add the total number of tiles that we know to find out the unknown value of red tiles. The blue tiles make up 1/2 of the design, or 50 tiles. Next we will add the green tiles, which Naomi used 15 of, as stated.

So far, we have figured out how many blue and green tiles we have. (50 blue, and 15 green, which is a total of 65).

Now we need to calculate the number of yellow tiles, which equal 1/5 of the design. 1/5 of 100 is 20.

Now we add all of our tiles that we already know. We have 50 red + 15 green + 20 yellow which = 85.

Now to find the unknown value of red tiles, we subtract our 85 other tiles from the 100 total tiles, and the ends us up with 15 red tiles.

Hope this helps!!

stay safe :0)

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The bird house in your friend's yard casts a shadow that is 14 feet long. Your friend is 5 feet tall and casts a shadow that is 3.5 feet long. What is the height of the bird house?

Answers

Answer:

Bird house is 20 ft. high.

Step-by-step explanation:

Let the height of the bird house is h feet high casts a shadow of 14 ft long.

My friend is 5 feet high and casts a shadow of 3.5 feet.

Now we see both the triangles Δ ABC and Δ XYZ are similar.

By the similar triangles theorem sides opposite to the corresponding angles will be in the same ratio.

$(5)/(h)=(3.5)/(14)$ (from similar triangles ABC and XYZ)

$h=(14*5)/(3.5)=(70)/(3.5)=20 ft.$

Therefore bird's house is 20 feet high.

Answer:

20 feet high

Step-by-step explanation:

Do the work

Sarah wants to go sky-diving. In order for her to safely sky-dive, she must be 200 pounds of less. Right now, she weights 231 pounds. She decided to work out and eat healthy so that she could lose weight each week. The table below shows her data. Part a. Based on the data in the table, what is the slope? Explain what the slope means in context of the situation.

Part b. What is the linear equation to represent the situation?

Part c. How many weeks will it take her to safely sky-dive?

Answers

a) -2, b) y = -2x + 231, c) 16

the cylindrical fish tank shown bellow has a height of 25 inches and a volume of 5,625 pie cubic inches. that is the diameter of the fish tank?

Answers

r = square root of V/πh

r = square root of 5625/78.l5

r = 8.46

D = 16.92

Estimate the sum of 299 and 388

Answers

Hello Its 700 Glad To Help! :)

What is 1 and 3/4-7/10

Answers

$1 (3)/(4) - (7)/(10)$
We first have to change the mixed number into a fraction and we do this by multiplying the denominator to the whole number and adding the product to the numerator.
It looks something like this:
$1 (3)/(4)$
4×1=4 (Multiply the denominator and the whole number)
4+3=7 (Add the product and the numerator)
$(7)/(4)$
Keep the same denominator
Now that we have the improper fraction, we can subtract.
$(7)/(4) - (7)/(10)$
Now in order to subtract we have to have a common denominator, so lets make both of the denominators 20.
$(7)/(4)$ × $(5)/(5)$ = $(35)/(20)$
$(7)/(10)$ × $(2)/(2)$ = $(14)/(20)$
$(35)/(20) - (14)/(20) = (21)/(20)$
21÷20=1.05 or $1 (1)/(20)$
If you have any questions, feel free to ask. Hope that helped :)

first turn 1 3/4 into an improper fraction

1x3=3+4=7
7/4-7/10

now make a common denominator

the common denominator is 20 so do 4x5=20 and 10x2=20

do the same to the numerators 7x5=35 and 7x2=14

35/20-14/20

the answer as an improper fraction is 21/20 and as a mixed number it is 1 1/20

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