3 years ago

Simplify the expressions -8(5r+6)+9(6r+3)

Mathematics

1 answer:

nirvana33 [79]3 years ago

7 0

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Solve the formula <br> F=ma for a<br> plss

barxatty [35]

Answer:

Step-by-step explanation:

F = ma

ma = F

a = F/m

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3 years ago

Which statements are true regarding the area of circles & sectors? Check all that apply.

Fynjy0 [20]

Answer:

4pi r

Step-by-step explanation:

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3 years ago

Erin feeds her dog 7/10 cup of food a day . With 3/10 cup canned and the rest dry . She also gives her dog 1 treat a day . How m

gavmur [86]

Answer:

$2\frac{4}{5}\ \ or \ 2.8 \ \ cups$

Step-by-step explanation:

-The total portion fed to the dog is 7/10 cup

Canned-3/10
Dry=7/10-3/10=4/10

-One week has 7 days. we multiply the dry portion per day by the number of days in a week.

$Dry= Total -Canned\\\\=\frac{7}{10}-\frac{3}{10}\\\\=0.40 \ cup\\\\Dry \ per \ Week= Dry/ day\times days\\\\=0.40\times 7\\\\=2\frac{4}{5}\ or\ 2.8 \ cups$

Hence, Erin feed her dog 2 4/5 0r 2.8 cups of dry food

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3 years ago

For what values of x is the area of the rectangle greater than the perimeter?

soldier1979 [14.2K]

Area = 7(x + 2) = 7x + 14
Perimeter = 2(7 + x + 2) = 2(9 + x) = 18 + 2x
7x + 14 > 18 + 2x
7x - 2x > 18 - 14
5x > 4
x > 4/5

4 0

3 years ago

Given the regular octagon, what is the length of any side?

Jlenok [28]

Answer:110

Step-by-step explanation:x^2+17x=15x+35

x^2+17x-15x-35=0

x^2+2x-35=0

delta=2^2-4*1*(-35)=4+140=144

x1=(-2+V144)/2=(-2+12)/2=10/2

x=5

so 15*5+35=75+35=110

3 0

3 years ago

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