4 years ago

Ted is picking one of his three children (Ed, Jed, or Ned) to do the dishes.

Mathematics

1 answer:

maxonik [38]4 years ago

3 0

D, as they all have an equal chance of doing the dishes

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Find three consecutive odd integers whose sum is-213.

Degger [83]

X + x + 2 + x + 4 = -213
3x + 6 = -213
3x = -219
x = -73
-73 + 2 = -71
-73 + 4 = -69
Solution: -73, -71, -69

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3 years ago

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77julia77 [94]

Answer:

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3 years ago

The ratio of the perimeters of two similar triangles is 4:7. What is the area of each of these triangles if the sum of their are

Mashcka [7]

Answer:

The area of triangles are 16 cm^2 and 49 cm^2

Step-by-step explanation:

we know that

If two figures are similar, the ratio of its perimeters is equal to the scale factor and the ratio of its areas is equal to the scale factor squared

Let

z ----> the scale factor

x ----> the area of the smaller triangle in square centimeters

y ----> the area of the larger triangle in square centimeters

we know that

$z=\frac{4}{7}$

$\frac{x}{y}=z^2$

$\frac{x}{y}=(\frac{4}{7})^2$

$\frac{x}{y}=\frac{16}{49}$

$x=\frac{16}{49}y$ -----> equation A

$x+y=65$ ----> equation B

solve the system by substitution

substitute equation A in equation B

$\frac{16}{49}y+y=65$

solve for y

$\frac{65}{49}y=65$

$y=49\ cm^2$

Find the value of x

$x=\frac{16}{49}(49)$

$x=16\ cm^2$

therefore

The area of triangles are 16 cm^2 and 49 cm^2

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4 years ago

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Orlov [11]

Basically all you have to do is 5,000 x 5% = 250 Hope this helps.

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3 years ago

a square field has an area of 2000 square feet. to the beat fest foot, how much fencing would be needed to enclose the field

swat32

Answer:

180 feet

Step-by-step explanation:

√2000 = 44.8

44.8 x 4 = 179.2 = 180 feet

5 0

4 years ago