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2 years ago

14

3. Orenda has a total of 41 loonies ($1 coin) and toonies ($2 coin) in her piggy bank. Their total value is $59.

1 answer:

Flauer [41]2 years ago

5 0

Answer:

20 toonies and 1 loonie

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Eric sold cell phones for 70 dollars Eric increases his sale price by 100% what is the sales price of the cell phone

Stella [2.4K]

Current Price = $70

Percentage increase = 100% of $70 = $70

Sale Price = $70 + $70 = $140

------------------------------------------------------------------------
Answer: The sale price of the cell phone is $140.
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7 0

2 years ago

A survey of 102 high school students on the amount of money they spend on prom yields an average of $893. Assuming the populatio

Mnenie [13.5K]

Answer:

Margin of error $=E=[69]$

Step-by-step explanation:

Data provided in the question:

$\bar{x}=\$\ 893$

$\sigma=\$\ 450$

$n=102$

At $88 \%$ confidence level the $z$ is.

$\alpha=1-88 \%=1-0.88=0.12$

$\frac{\alpha}{2}=\frac{0.12}{2}=0.06$

$z_{\frac \alpha 2}=20.06=1.555$

$\text { Margin of error }=E=Z_{\frac \alpha 2} \times \frac{\sigma}{\sqrt{n}}$

$E=1.555 \times \frac{450}{\sqrt{102}}$

Margin of error $=E=[69]$

7 0

2 years ago

Justin spends $15 at the grocery store. He buys a loaf of bread for $3 and buys 112 pounds of cheese. What is the price per poun

mezya [45]

Answer:

$0.11 per pound

Step-by-step explanation:

15 - 3 = 12

12/112 = 0.10714286

= about 0.11

4 0

2 years ago

A manufacturing company has the following fixed monthly costs and unit variable costs: Rent = $2,200 Utilities = $375 Variable c

valentinak56 [21]

A manufacturing company has the following fixed monthly costs and unit variable costs:

Rent = $2,200

Utilities = $375

Variable costs for materials and assembly = $13.25/unit

Monthly labor = $750

Given is the product is sold at $24.99 per unit

Let the number of units sold be x

Adding total cost = $2200+375+750=3325$

Equation becomes:

$3325+13.25x=24.99x$

$11.74x=3325$

x= 283.21

So, rounding it to nearest whole number we get, 283 units.

3 0

2 years ago

Which equation, when graphed, has x-intercepts at (-1,0) and (-5,0) and a y-intercept at (0, -30)?

Vladimir [108]

If a function has roots -1 and -5, it must be in the form

$f(x)=a(x+1)(x+5)$

We can fix the coefficient a by imposing the passing through (0,-30):

$f(0)=-30=a(1)(5)\iff a=-6$

So, the function is

$f(x)=-6(x+1)(x+5)$

7 0

2 years ago