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dedylja [7]
3 years ago
8

Math 8 Review:Question 9

Mathematics
1 answer:
forsale [732]3 years ago
5 0

Answer:

$5 per hour

Step-by-step explanation:

Just divide the amount that he earns by the price.

25/5=5

50/10=5

Brett is making $5 an hour.

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The coordinates of triangle GBW are G (20, 10) B (-35, 20), and W (5,-10). Is GBW a right triangle? Justify your answer.
Artist 52 [7]
We know from Pythagoras' Theorem, a right angle triangle can be identified by the relationship:

a^2+b^2=c^2

Thus, we know if the side lengths of the triangle in question abide by this relation, the triangle is right.

First, we must find the greatest side length.

We know, using the distance formula.

GB= \sqrt{(-35-20)^2 +(20-10)^2} =\sqrt{3125}
BW= \sqrt{(5+35)^2 +(-10-20)^2} =\sqrt{2500}
WG= \sqrt{(20-5)^2 +(10+10)^2} =\sqrt{625}

From this, we know that:
GB\ \textgreater \ BW\ \textgreater \ WG
Therefore, GB would be the hypotenuse of the triangle.
Now we substitute the values for the two shorter lengths and the greater length into the pythagorean theorem:
a^2+b^2=2500+625=3125
c^2=3125
\therefore LHS=RHS
Therefore, this triangle is a right angled triangle

6 0
3 years ago
Can someone please help with these please!!
ryzh [129]

Answer:

27.57

is the Mean

20 is the mode (most repetative)

26 is the median (the number in the middle when in order)

Step-by-step explanation:

SO they look better by using their Mean Score 27.57 Points

5 0
2 years ago
Read 2 more answers
A credit card company charges 18% simple interest for overdue accounts. How much interest will Kristen owe three months from now
Ber [7]

Answer: The amount that Kristen would owe three months from now is $67.5

Step-by-step explanation:

The formula for determining simple interest is expressed as

I = PRT/100

Where

I represents interest paid on the loan.

P represents the principal or the current balance.

R represents interest rate

T represents the duration for which the account is overdue in years.

From the information given,

P = 1500

R = 18%

T = 3 months = 3/12 = 0.25 year

I = (1500 × 18 × 0.25)/100 = $67.5

4 0
3 years ago
3 Gordon is selling popcorn that costs
riadik2000 [5.3K]

Answer:

30 more bags

Step-by-step explanation:

7 0
3 years ago
If 2000 is placed into a bank account that pays 3% compound interest per year how much will be in the account after 2 years
Margarita [4]

Answer:

Account Balance = Principal x (1 + interest rate (decimal)) number of years, compounded annually.

Step-by-step explanation:

This is based on the information provided: 2121.80 (1.03)2 = 2000 So, on your initial deposit of 2000, you can collect 121.80 in interest after two years.

5 0
2 years ago
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