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MrRissso [65]
4 years ago
15

Need some math help!

Mathematics
2 answers:
boyakko [2]4 years ago
8 0

Angle A is 91°

In order to get to that answer, you have to remember your SOHCAHTOA method (Or Sin= Opp/Hyp Cos= Adj/Hyp and Tan= Opp/Adj)

So first try to find Angle C, you would use SOH. So Sin C = 7/14 (7 is your opposite and 14 is your hypotenuse) Which when you inverse Sin (or Sin^-1) the 7/14, in degrees, you should end up with 30°. Next do the same thing to Angle B but this time instead of 7/14, it's now gonna be Sin B= 12/14 (12 being opposite to B and 14 being the hypotenuse) and then you Inverse Sine (Or Sin^-1) the 12/14 and you should get 59°.

At this point, you should know basic angle solving skills. Which being Angle C + Angle B + Angle A = 180. Plug in the two you know, so 30+59+Angle A= 180

89+ Angle A = 180

180-89= 91°

Final solution: Angle A = 91°

krok68 [10]4 years ago
5 0

This is a right triangle, the measure of angle A is 90 degrees.

First thing to do I guess is finding B and C.

tan^-1 (7/12) = 30 degrees

tan^-1 (12/7) = 60 degrees

60 + 30 = 90

180 - 90 = 90. Therefore angle A = 90 degrees

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A unit rate is a ratio that compares an amount of one quantity to _______________ unit of another quantity.
masya89 [10]

Answer:

one

Step-by-step explanation:

A unit rate compares a quantity to one unit of measure.

6 0
3 years ago
PLEASE HELP!! Is the discriminant of f positive,zero, or negative
GalinKa [24]

Answer:

positive

Step-by-step explanation:

The discriminant is positive

If there are 2 real roots ( where it crosses the x axis), then the discriminant is positive

7 0
3 years ago
Read 2 more answers
A jewellery store paid a unit price of $250 less 40%, 16 1/3 %, for a shipment of designer watches . The store's overhead is 65%
ruslelena [56]

The regular selling price of the jewelry is $253.00. The sale price for the jewelry is $189.75. And the rate of markdown is 25%.

A jewellery store paid a unit price of $250 less 40%, 16 1/3 %, for a shipment of designer watches . The store's overhead is 65% of cost and the normal profit is 55% of cost.

Overhead and Profit means those costs incurred by you and paid to a General Contractor to perform and oversee covered repairs to the insured location. “Overhead and Profit” does not apply to independent or specialty contractors including, but not limited to, roofers, plumbers, electricians and painters.

It is given that the unit price of the watch is $250 and the discount rates are 40%, 16 +2/3 or 16.666666667%, and 8%. Therefore the purchase price of watches per unit can be estimated as:

Purchase price of watches per unit = Unit price*(1- first discount %)(1-second discount %)(1-third discount %)

Purchase price of watches per unit = 250*(1-40%)(1-16.66666667%)(1-8%)

Purchase price of watches per unit =115

Now, the overhead expense is 65% of the cost. So the overhead amount is Overhead amount = 65% of the cost

Overhead amount = 115*65%

Overhead amount = 74.75

Now, the profit is 55% of the cost. So

Profit amount = Cost *profit %

Profit amount =115*55%

Profit amount =63.25

a. Thus, the regular selling price can be estimated as:

Regular selling price = Unit purchase cost + overhead + profit

Regular selling price =115+74.75+63.25

Regular selling price =253.00

Therefore, the regular selling price of the watches would be $253.00

b. The sale price to break even would be equal to the cost of the watch plus overhead. It is the amount that is required to cover only the total cost of the product. So,

Break-even price = Cost + overhead

Break-even price =115 + 74.75

Break-even price = 189.75

Therefore, the break-even price is $189.75.

c. From above, the regular selling price is 253.00 and the break-even price is 189.75. Thus,

Mark-down rate to sell at break-even price = (Regular selling price-Breakeven price)/Regular selling price.

Mark-down rate to sell at break-even price = (253-189.75)/253

Mark-down rate to sell at break-even price = 0.25 or 25%

Therefore, the mark-down rate is 25%.

To learn more about markdown rate visit:

brainly.com/question/26711729

#SPJ1

7 0
1 year ago
Factor the expression 8x^3y-8x^2y-30xy
miv72 [106K]

Find the Greatest Common Factor (GCF)

GCF = 2xy

Factor out the GCF. (Write the GCF first. Then, in parentheses, divide each term by the GCF.)

2xy(8x^3y/2xy + -8x^2y/2xy + -30xy/2xy)

Simplify each term in parenthesis

2xy(4x^2 - 4x - 15)

Split the second term in 4x^2 - 4x - 15 into two terms

2xy(4x^2 + 6x - 10x - 15)

Factor out common terms in the first two terms, then in the last two terms;

2xy(2x(2x + 3) -5(2x + 3))

Factor out the common term 2x + 3

<u>= 2xy(2x + 3)(2x - 5)</u>

4 0
3 years ago
Question 10 of 10 Which of the binomials below is a factor of this trinomial? x² + 3x - 4 O A. X+8 O B. x² + 4 O c. x-4 O D. X+4
ollegr [7]

Step-by-step explanation:

Since x² + 3x - 4 = (x + 4)(x - 1), the correct answer is D.

8 0
3 years ago
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