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3 years ago

The Spanish club is arranging a trip to a Mexican restaurant in a nearby city. Those who go

Mathematics

1 answer:

Hoochie [10]3 years ago

7 0

Answer:

20 people

Step-by-step explanation:

well we know that only going to the restaurant every person must pay $7

so we have only $3 extra

those 3 dollars times the number of people must give 60 dollars

$3x=60\\\\\frac{1}{3} *3x=\frac{1}{3} *60\\\\x=20$

so 20 people must go, to pay only $10

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The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is

trasher [3.6K]

The function is graphed as shown below

Part A:

We use the formula $- \frac{b}{2a}$ to find the vertex of the function. A quadratic function of the form of $a x^{2} +bx+c$ and equating this form to the given function $- x^{2} +20x-75$ , we have
$b=20$ and $a=-1$ .

Substituting $a$ and $b$ into the vertex formula, we have
$x=- \frac{20}{2(-1)}=10$ , as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

$- x^{2} +20x-75=0$
$-( x^{2} -20x+75)=0$
$x^{2} -20x+75=0$
$(x-5)(x-15)=0$
$x=5$ and $x=15$ , as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

8 0

3 years ago

HELP PLEASE CAN’T FIGURE THIS OUT NEED HELP

Ivanshal [37]

Answer:

LN= 68°

Step-by-step explanation:

6 0

3 years ago

One liter is approximately equal to 0.26 gallons. Find the volume rounded to the nearest hundredth of a liter of a container tha

labwork [276]

5.5 gal divided by 0.26 gal per litre is approximately 21.15 litres. Hope this helps! :3

3 0

3 years ago

Pls answer quickly, this is due today !!!!!!

Flura [38]

Answer:

Step-by-step explanation:

Dear Mrs.Rappa,

I don't know much about this but i do know that saving accounts are risky and she should just set up a checking. Because it's proven that you'll take the risk of losing value in your money. And you take a risk, but to help you more i need to know about what the 5% 7 means. if i do know what it's means, but the 5% is good, it's compound interest which means you get more money on that interest It grows, but as far as the 7 goes, IDK. but the saving %"s are good like yay money, but she takes the risks. So why the risk is there is because of the stock market, and also because the bank takes other clients money for them to pay other client's. So a risk in 7yrs.

Sincerely,

First name Last name Here

4 0

3 years ago

*UNIT RATE AND PROPORTIONS*

Advocard [28]

Answer:

Unit rate is $7 per pound.

6 pounds will cost $42

You can buy 10 pounds for $70

Step-by-step explanation:

28/4 = $7 --> Unit rate is $7 per pound.

7 × 6 = $42 --> 6 pounds will cost $42

70/7= 10 --> You can buy 10 pounds for $70

3 0

2 years ago