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Makovka662 [10]
3 years ago
7

PLEASE HELP PREALGEBRA !!!

Mathematics
1 answer:
LekaFEV [45]3 years ago
4 0

The third box as well.

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The original price of a toaster is $18.00. If the toaster is marked down 25%, what is the new price?
Alla [95]

Answer:

$13.50

Step-by-step explanation:

First, we got to multiply $18 by 25% or .25

$18 x .25 = $4.50

Lastly, we just subtract $4.50 from $18.

$18 - $4.50 = $13.50

5 0
3 years ago
A triangular lot has sides of 215m, 185m, and 125m. Find the measures of the angles at its corners
Vlada [557]

Answer:

The measures of the angles at its corners are 59.1\°,35.4\°,85.5\°

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of angle A

Applying the law of cosines

185^{2}= 215^{2}+125^{2}-2(215)(125)cos(A)

2(215)(125)cos(A)= 215^{2}+125^{2}-185^{2}

cos(A)= [215^{2}+125^{2}-185^{2}]/(2(215)(125))cos(A)=0.513953

A=arccos(0.513953)=59.1\°

step 2

Find the measure of angle B

Applying the law of cosines

125^{2}= 215^{2}+185^{2}-2(215)(185)cos(B)

2(215)(185)cos(B)= 215^{2}+185^{2}-125^{2}

cos(B)= [215^{2}+185^{2}-125^{2}]/(2(215)(185))cos(B)=0.81489

B=arccos(0.81489)=35.4\°

step 3

Find the measure of angle C

Applying the law of cosines

215^{2}= 125^{2}+185^{2}-2(125)(185)cos(C)

2(125)(185)cos(C)= 125^{2}+185^{2}-215^{2}

cos(C)= [125^{2}+185^{2}-215^{2}]/(2(125)(185))cos(C)=0.0784

C=arccos(0.0784)=85.5\°

3 0
3 years ago
How many ways can first, second, and third place be awarded in a race of 20 people?
Volgvan
That would be 20 x 19 x 18 which equals 6840. 
After first place is chosen, 19 spots left and so on.
The answer is 6840 ways.
3 0
3 years ago
The graph below represents the average monthly rainfall (y), in inches, in
White raven [17]

Answer:

The amount of rainfall increases as an exponential function of time.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Hannah can complete 4 math problems per minute.write and solve a direct variation equation to find how many math problems she ca
scoundrel [369]
15 x 4 = 60
Hope this helps!
4 0
3 years ago
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