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3 years ago

Luci cuts a board that is 5/9 yard long into pieces that are 5/18 yard long. How many pieces does she cut?

Mathematics

1 answer:

satela [25.4K]3 years ago

5 0

Answer:

Step-by-step explanation:

9x2=18

5x2=10

10/18=5/9

10/18 divided by 2 5/18

so its 2

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- Todd uses 21 white tiles and some black tiles to make a mosaic. The mosaic has a total area of 144 square centimeters. Each

Anna71 [15]

Answer:

Step-by-step explanation:

21 white tiles = 63 cm2

total number is 144

144-63 = 81

81/3 = 27

so 27 black tiles

21+27 = 48 total.

5 0

3 years ago

Read 2 more answers

W usng a calculator, paper and pencil, or mental math.

Paraphin [41]

Answer:

Mandy will take 67.5 mins to complete the 15 km race.

Step-by-step explanation:

Given:

Mandy runs 4 km in 18 min

She plans to run in a 15 km race.

We need to find how much time required to run 15 km.

4 km =18 min

15 km = time required for 15 km race

By Using Unitary method we get,

Time required for 15 km = $\frac{18\times 15}{4}=67.5 mins$

Hence time required by Mandy to complete 15 km race is 67.5 mins.

4 0

4 years ago

PLZ HELP ASAP!!!! What is 20x(8+4) x 9

dolphi86 [110]

Answer:

1440x+720

Step-by-step explanation:

Expanding up the brackets, you get

160x+80.

Then you multiply the whole thing by 9.

9(160x+80)=

1440x+720

8 0

3 years ago

A. Multiply the factors you found above to verify that their product equals x2 + 6x + 5. Show your work

madreJ [45]

Answer:

Step-by-step explanation:

x2 + 6x + 5

x2 + x + 5x + 5

x ( x + 1) + 5(x + 1)

(x + 5) and ( x + 1) are the factors

Now multiplying the factors

(x + 1) (x + 5)

x2 + 5x + x + 5

x2 + 6x + 5

5 0

3 years ago

Prove the following statement: If the x- and y-intercepts of a line are identical nonzero numbers, the line must have a slope of

dlinn [17]

Answer:

Step-by-step explanation:

Proof:

If:

x intercept is at a number nonzero "a"

so the point where it intersects the x-axis is at (a,0)

y-intercept is at the same nonzeronumber "a"

so the point where it intersects the y-axis is at (0,a)

Then:

slope between point (a,0) and (0,a) is m= (y2-y1)/(x2-x1) = 0-a/a-0=-a/a= -1

x intercept is 2 (for example)

so the point where it intersects the x-axis is at (2,0)

y-intercept is 2

so the point where it intersects the y-axis is at (0,2)

slope between point (2,0) and (0,2) is m= (y2-y1)/(x2-x1) = 0-2/2-0=-2/2=-1

6 0

3 years ago