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2 years ago

13

A smartphone costs $280. Sales tax is 8%. What is the total cost, including tax

1 answer:

oee [108]2 years ago

5 0

Answer:

it should cost 302.40$ all together

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Sin law or cos law?!!!!!!!!!!!!!

MA_775_DIABLO [31]

Answer:

Law of Sines

Step-by-step explanation:

Law of Sines: $\frac{A}{sina} =\frac{B}{sinb} =\frac{C}{sinc}$

Step 1: Solve for m∠B

$\frac{25}{sin36} =\frac{27}{sinx}$

25sinx = 27sin36°

sinx = 27sin36°/25

$x = sin^{-1}(\frac{27sin36}{25} )$

m∠B ≈ 39.4°

Step 3: Find m∠C

180 - (36 + 39.4)

180 - 75.4

m∠C = 104.6°

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2 years ago

How do You solve 2x-5=2x-6

faltersainse [42]

Step-by-step explanation:

2x-5=2x-6. First you collect like terms

2x-2x=-6+5

0=-1

This statement is false 0≠-1

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3 years ago

Read 2 more answers

How could you correctly rewrite the equation 6(11 – 3) = 4(7 455) using the distributive property?

Sergeeva-Olga [200]

Answer:

B. 66-18=28+20

Step-by-step explanation:

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2 years ago

A tepee is designed to have a diameter of 10 ft and a volume of 393 ft. At

Citrus2011 [14]

Answer:

15 ft.

Step-by-step explanation:

The tepee is a cone and its volume

= 1/3 pi r^2 h where r = radius and h = height.

The radius r = 1/2 * 10 = 5 ft.

So we have the equation:

393 = 1/3*3.14* 5^2 * h

h = 393 / (1/3*3.14*25)

= 15.02 ft.

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3 years ago

Please help me really need help in this math proplem

nadya68 [22]

.h.i. i think i know the answer

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2 years ago