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3 years ago

Y=2 2: 2x+4=8y -10 Solve for x

Mathematics

1 answer:

mr_godi [17]3 years ago

3 0

Answer: (x,y) = -18/77,10/7

Step-by-step explanation:

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Which quantity is not equal to 75(32+88)

Anna35 [415]

Without the choices given it would be any number
EXCEPT 9000
75(32+88)=
75(120)= 9000

HOPE THIS HELPS

3 0

3 years ago

To keep cylindrical flower vases from spilling, a designer is planning to enlarge the original area of the base by 25%. The new

spin [16.1K]

Answer:

To keep the same volume, the designer needs to decrease the height of the vase by 20%

Step-by-step explanation:

Volume of cylinder formula is $V=\pi r^2 h$

Area of base is $\pi r^2$ , if this area is increased by 25%, the new area of base would be:

$\pi r^2 + \frac{25}{100}(\pi r^2)\\=\pi r^2 + (0.25)(\pi r^2)\\=1.25\pi r^2$

Since volume would be same, we can make the height as:

$V=\pi r^2 h\\V=(1.25\pi r^2)(\frac{h}{1.25})\\V=\pi r^2h$

Thus, we can see that the height needs to be divided by 1.25, which we can write in fractional form as:

$\frac{h}{1.25}\\=\frac{h}{\frac{5}{4}}\\=h*\frac{4}{5}\\=h*(0.8)$

Thus, height needs to be $\frac{4}{5}$ of original (or 80% of original)

4 0

4 years ago

On a coordinate plane, the vertices of a rectangle are (-2,1), (3,1), (-1,-4), and (3,-4). what is the perimeter of the rectangl

Ratling [72]

You can graph the points, then use the distance formula to find each side length. Then just add the sides together.
Distance formula:
$d = \sqrt{(x_2-x_1)^{2} + (y_2-y_1)^2 }$

4 0

3 years ago

Simplify 4x-3(x-2y)+ .5(6x-8y)

Marina CMI [18]

Answer:

4x +2y

Step-by-step explanation:

4x-3(x-2y)+ .5(6x-8y)

Distribute

4x -3x+6y +3x -4y

Combine like terms

4x-3x+3x +6y-4y

4x +2y

5 0

3 years ago

A mouse population starts with 2,000 mice and grows at a rate of 5% per year. The number of mice after T years can be modeled by

andrezito [222]

P(t)=2000(1.05)^2 P(t)=2000(1.05)^5

P(t)=2000(1.1025) P(t)=2000(1.2762)

P(t)=2205 for the second year P(t)=2552.5 for the fifth year

2552.5-2205= 347.5 347.5/3 about 115.8 more mice each year or 116 when rounded.

I hope that helped. :)

7 0

3 years ago