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3 years ago

Need help figuring this out!

Mathematics

1 answer:

Ulleksa [173]3 years ago

6 0

For this case, we have that by definition, the area of a triangle is given by:

$A = \frac {b * h} {2}$

where:

b: It's the base

h: It's the height

In this case we have:

$b = 21 \ ft\\h = 6 \ ft$

Substituting:

$A = \frac {21 * 6} {2}\\A = 63 \ ft ^ 2$

Answer:

$63 \ ft ^ 2$

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To find out, all you have to do is divide 91980 by 36. Doing this will give you the result 2,555. This means that 36 can go into 91980 2,555 times.

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3 years ago

Helena has saved $595 to put toward snowboarding equipment and lift tickets at the hill. Each lift ticket costs $35. If she want

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3 years ago

Peter is renting two kinds of rafts for a vacation company. One type seats 3

Nady [450]

Answer:

Peter rents 6 of the rafts seating 3 people, and 7 of the rafts seating 5 people.

Step-by-step explanation:

Let $x$ denote the number of rafts seating 3 people and $y$ the number of rafts seating 5 people. The total number of rafts is 13, so $x+y=13$ . We can also assume that every raft is filled to the brim (it isn't stated explicitly though, but it's probably the intention of the question maker), so $3x+5y=53$ .

It's always a good idea to put these equations under each other:

$\left \{ {{x+y = 13} \atop {3x+5y=53}} \right.$

We can subtract the first equation three times from the second one to obtain $(3x+5y)-3(x+y) = 53 - 3(13)\\3x-3x + 5y - 3y = 53 - 39\\2y = 14\\y=\frac{14}{2} = 7$

Now, substitute this found value for $y$ into $x+y = 13$ and we see that $x=6$ . We are now done: Peter rents 6 of the rafts seating 3 people, and 7 of the rafts seating 5 people.

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3 years ago

10) pls help i’ll give 20 points :)

NikAS [45]

Answer: The blank space in the equation is 4.

Step-by-step explanation: -6 x +2 is -12. -48/-12 is 4. Therefore, the blank space in the equation is 4.

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3 years ago

Jenna and her 2 sisters want to take a camping trip. they have $125 saved. each of them will save $24 a week until they have $42

Alexxandr [17]

Answer:

After 4 weeks they have $413

After 5 weeks they have $485 (more than enough money)

Step-by-step explanation:

we know that here are 3 people saving up this money and we know that they have already saved 125 dollars.

if each saves $24 per week... 24*3=72 (total profit per week)

for 4 weeks... 72*4=288

288+125(already saved up)= 413

If they go one more week and save up another 72 dollars in 1 week this will bring them past their goal

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4 years ago