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Elden [556K]
4 years ago
3

Find y to the nearest tenth. 2.7 2.9 7.5

Mathematics
2 answers:
vlabodo [156]4 years ago
6 0
Using sohcahtoa; you have an angle and the hypotenuse. The side you are trying to find is adjacent to the angle therefore you use cos.
Cos(angle)=adjacent side/hypotenuse
Plug in to get cos(20)=y/8
Solve for y to get
Y=8*cos(20)
Solve for y
Y=7.51
Round to the nearest tenth
Y=7.5
alexira [117]4 years ago
3 0

y = 8 x cos(20)

y = 7.517

y = 7.5

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-3x(7x-4)+6x-(13-24x²)​
Margarita [4]

Answer:

  • 3x^2+18x-13.

Step-by-step explanation:

<u>Step 1:</u>

<em>Equation should be:</em>

  • ((0-(3x*(7x-4)))+6)-(13-(2^3*3x^2))

<u>Step 2:</u>

<em>Equation should be:</em>

  • ((0-3x*(7x-4))+6x)-(13-24x^2)

<u>Step 3:</u>

  • Factoring 3x^2+18x-13
  • The first term is 3x^2. It's coefficient is 3.
  • The middle term is +18x, it's coefficient is 18.
  • The last term, "the constant", is -13.

<em>Step 1</em>:

  • Multiply the coefficient of the first term by the constant   3 * -13 = -39

<em>Step 2:</em>

  • Find two factors of  -39  whose sum equals the coefficient of the middle term, which is 18 .
  •  -39    +    1    =    -38
  •      -13    +    3    =    -10
  •      -3    +    13    =    10
  •      -1    +    39    =    38
  • Observation : No two such factors can be found !!
  • Conclusion : Trinomial can not be factored

<u>Solution:</u>

  • <u />3x^2 + 18x - 13.

5 0
2 years ago
Read 2 more answers
The food bank has 1774.4 oz of chicken.If 12.6 oz is 2 servings,how many servings of chicken does this provide?
diamong [38]

Answer:

281 servings

Step-by-step explanation:

From the table attached,

We will apply the unitary method to solve this problem.

∵ 12.6 oz of chicken represents number of servings = 2

∴ 1 oz of chicken will represents number of servings = \frac{2}{12.6}

∴ 1774.4 oz of chicken will make the total servings = \frac{2}{12.6}\times 1774.4

                                                                                    = 281.65

                                                                                    ≈ 281 servings

Therefore, total number of servings provided = 281

6 0
3 years ago
How do you write in numbers a hundred and one thousand dollars?
mixas84 [53]
You write it as $101,000.
8 0
3 years ago
Help! sin^-1(tan(pi/4)
devlian [24]

Answer:

Step-by-step explanation: the best way to get this answer is by using a scientific calculator fx-991es plus I recommend

Let's go manual for now.

Let's covert pi/4 to angle

1⁰ =π/180

1 radian =180/π

Therefore π/4 × 180/π

∅ =45⁰

Sin-¹(tan 45⁰)

Tan 45⁰= 1

Sin-¹ (1) = 90⁰. Press { sin,-¹ (1) } on your calculator

Sin-¹ (tan pi/4) = 90⁰

4 0
3 years ago
How do you turn 3/2,000 into a precent
KIM [24]
3/2,000
= 3/2,000*100% (100%= 100/100= 1, so it does not change the outcome).
= 0.15%

The final answer is 0.15%~
4 0
4 years ago
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