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mars1129 [50]
4 years ago
7

Plz Help!!! FInd "B" I'll give brainliest

Mathematics
2 answers:
kicyunya [14]4 years ago
6 0

Answer:

b = 45/4

Step-by-step explanation:

First we need to solve for x

sin 30 = opposite/ hypotenuse

sin 30 = x/15

15 sin 30 = x

15 (1/2) =x

15/2 =x

Then we can use

cos 60 = adjacent/ hypotenuse

cos 60 = a/x

Multiply by x

x cos 60 =a

15/2 (1/2) =a

15/4 =a

b = 15 -a

b = 15 - 15/4

b = 15*4/4 - 15/4

  = 60/4-15/4

  =  45/4

dsp734 years ago
5 0

Answer: b=11.26

Step-by-step explanation:

using the length 15 solve for the lengths z and x because the big triangle is also a 30 60 90. x=7.5, z=12.99 (13). Once you know z you can solve for y and b. y=6.5 and b=11.26.

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Solve the equation 5x-2x^2+1
Pani-rosa [81]

Answer:

Step-by-step explanation:

If you call "5x-2x^2+1" an "equation," then you must equate 5x-2x^2+1 to 0:

5x-2x^2+1 = 0

This is a quadratic equation.  Rearranging the terms in descending order by powers of x, we get:

-2x^2 + 5x + 1 = 0.  Here the coefficients are a = -2, b = 5 and c = 1.

Use the quadratic formula to solve for x:

First find the discriminant, b^2 - 4ac:  25 - 4(-2)(1) = 25 + 8 = 33

Because the discriminant is positive, the roots of this quadratic are real and unequal.

                                                             -b ± √(discriminant)

Applying the quadratic formula   x = --------------------------------

                                                                         2a

we get:

      -5 ± √33           -5 + √33

x = ----------------- = --------------------- and

           2(-2)                     -4

                                  -5 - √33

                                 ---------------

                                         -4

5 0
3 years ago
Kerry just bought a new Apple iPod nano for 129. On the same day she also bought several albums from iTunes for 11.99 each If sh
LenaWriter [7]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is the volume of the cylinder below?
lisov135 [29]

Answer:

192π

Step-by-step explanation:

cylinder volume is base times height

2πr^2 = base = 64π

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64π*3 = 192π

5 0
3 years ago
The Yasuda family bought a toy that cost t dollars and a game that cost g dollars. Both were on sale. Which of these methods cou
zmey [24]

The equation that the clerk can use to calculate their total bill is t + g.

<h3>How to illustrate the equation?</h3>

From the information given, Yasuda family bought a toy that cost t dollars and a game that cost g dollars.

The equation to calculate their total bills will be:

= t + g

where,

t = cost of toy

g = cost of game.

In this case, the equation that the clerk can use to calculate their total bill is t + g .

Learn more about equations on:

brainly.com/question/2972832

#SPJ1

7 0
2 years ago
In ΔDEF, the measure of ∠F=90°, FD = 63 feet, and DE = 71 feet. Find the measure of ∠E to the nearest degree.
stepan [7]

Answer:

Step-by-step explanation:

∠F=90°, FD = 63 feet, and DE = 71 feet.

That's a right angle triangle also.

measure of ∠E to the nearest degree

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∠E= sin^-1 0.8873

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7 0
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