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3 years ago

......................... HELP

Mathematics

1 answer:

mrs_skeptik [129]3 years ago

8 0

Answer:

Step-by-step explanation:

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Billy and Michael have 2 lemonade stands. Billy charges $2 per lemonade plus a flat rate of $2.

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1 lemonade.

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2 years ago

Multiply the binomials:<br> (x + 3y) (3x - 2y)

4vir4ik [10]

multiply the binomials:

(x + 3y) (3x - 2y)

Answer:

Simplify the expression:

3x^2+7xy−6y^2

Steps:

3x·2+7xy-6y·2

Multiply the numbers: 3·2=6

=6x+7xy-6·2y

Multiply the numbers: 6·2=12

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3 years ago

Three friends met for a book club at a coffee shop, each friend ordered a cup of coffee and two donuts. the total of the order w

4vir4ik [10]

Answer:

$Cost\ of\ donut=\frac{49}{24}\approx \$2.042\\\\cost\ of\ donuts=\frac{49}{4}\approx \$12.25$

Step-by-step explanation:

$Let\ cost\ of\ coffee=y\\\\cost\ of\ one\ donut=x\\\\Each\ friend\ buy\ one\ coffee\ and\ two\ donuts\\\\Amount\ for\ 1\ friend=Cost\ of\ coffee+2\times cost\ of\ donut\\\\Amount\ for\ 1\ friend=y+2x\\\\Amount\ required\ for\ 3\ friend=3\times Amount\ for\ 1\ friend\\\\Amount\ required\ for\ 3\ friend=3\times (y+2x)\\\\Amount\ required\ for\ 3\ friend=3y+6x\\\\Total\ bill=\$ 22\\\\3y+2x=22\\\\Given\ cost\ of\ coffee=\$3.25\\\\y=\$3.25$

$Hence\ solution\ of\ following\ system\ of\ equation\ will\ give\ cost\ of\ donut:\\\\3y+6x=22\\\\y=3.25\\\\\\Substitute\ y=3.25\ in\ first\ equation\\\\3\times 3.25+6x=22\\\\9.75+6x=22\\\\6x=22-9.75\\\\6x=12.25\\\\x=\frac{12.25}{6}\\\\x=\frac{49}{24}\approx \$2.042\\\\Cost\ of\ donut=\frac{49}{24}\approx \$2.042$

See attached diagram.

$Each\ friend\ takes\ 2\ donuts\\\\Total\ donuts=Number\ of\ friends\times 2\\\\Total\ donuts=3\times 2=6\\\\cost\ of\ donuts=number\ of\ donuts\times cost\ of\ 1\ donut\\\\cost\ of\ donuts=6\times \frac{49}{24}\\\\cost\ of\ donuts=\frac{49}{4}\approx \$12.25$

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3 years ago

In a list of seven consecutive numbers a quarter of the smallest number is five less than a third of the largest number. If x is

liraira [26]

Answer:

a) 0.25x

b) (0.25x+5)*3

Step-by-step explanation:

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