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3 years ago

What is 2|u|-|v|, if u= -9 and v=-2? A.-18 B. -20 C. 16 D. 20

1 answer:

3 0

$\text{Put the values of u = -9 and v = -2 to the expression }2|u|-|v|:\\\\2|-9|-|-2|=2(9)-2=18-2=16\\\\Answer:\ \boxed{C.\ 16}\\\\|a|=a\ if\ a\geq0\\|a|=-a\ if\ a$

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Find the height of the giraffe in the diagram. Show your work below.

dlinn [17]

The distance from the person to the mirror is 5 ft. The distance from the mirror to the giraffe is 15 ft.

15/5 = 3

Multiply the height of the person by 3:

5 ft = 60 inches 60+3 = 63 inches

63 x 3 = 189 inches

189/12 = 15.75 ft = 15 feet 9 inches

The giraffe is 15 ft 9 inches tall

7 0

3 years ago

Write an equation to represent Catherine's profit (p) from selling cupcakes for one month Catherine sells cupcakes, c, for 1.50

Archy [21]

Answer:

$\text{p}=\$1.20\text{c}-\$20$

Step-by-step explanation:

GIVEN: Catherine sells cupcakes c for $\$1.50$ each, The ingredients for each cupcake cost her $\$0.30$ , and the sum of all her other expenses is $\$20/\text{month}$ .

TO FIND: Equation to represent Catherine's profit from selling cupcakes.

SOLUTION:

Cost of ingredients for each cupcake $=\$0.30$

sum of all other expenses $=\$20/\text{month}$

Selling price of each cupcake $=\$1.50$

Total cupcakes sold $=\text{c}$

Now,

As we know that $\text{Net profit}=\text{Selling price}-\text{Cost price}-\text{Other expense}$

putting values,

$\text{p}=\$1.50\text{c}-\$0.30\text{c}-\$20$

$\text{p}=\$1.20\text{c}-\$20$

Hence the equation to represent Catherine's profit (p) from selling cupcakes for one month Catherine sells is $\text{p}=\$1.20\text{c}-\$20$

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4 years ago

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sdas [7]

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nevsk [136]

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