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Andrew [12]
3 years ago
5

PLZ HELP I WILL GIVE THE BRAINLY!!!!

Mathematics
1 answer:
ankoles [38]3 years ago
8 0

Answer:

♡♤

Step-by-step explanation:

cosy°=8/s

beacuse it will be multiplied cosly

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At which values of x does the function F(x) have a vertical asymptote? Check
Tresset [83]

Answer:

4 and -1

Step-by-step explanation:

a p e x

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3 years ago
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DEF is a right angled triangle calculate the length of EF correct to 3 sigificant figures
Vesnalui [34]

Answer:

\displaystyle EF \approx 15.9

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Trigonometry</u>

  • [Right Triangles Only] SOHCAHTOA
  • [Right Triangles Only] cosθ = adjacent over hypotenuse

Step-by-step explanation:

<u>Step 1: Define</u>

Angle θ = 28°

Adjacent Leg = EF = <em>x</em>

Hypotenuse = DF = 18

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute in variables [Cosine]:                                                                    \displaystyle cos28^\circ = \frac{x}{18}
  2. [Multiplication Property of Equality] Multiply 18 on both sides:                  \displaystyle 18cos28^\circ = x
  3. Evaluate trig:                                                                                                  \displaystyle 18(0.882948) = x
  4. Multiply:                                                                                                          \displaystyle 15.8931 = x
  5. Rewrite:                                                                                                          \displaystyle EF = 15.8931
  6. Round:                                                                                                             \displaystyle EF \approx 15.9
8 0
3 years ago
Susan makes purple paint by mixing red and blue paint in the ratio 2:3
viktelen [127]
25ml — you add up the two numbers in the ratio, and that makes 5 (2+3), you then need to make sure that your answer is a multiple of 5 while being in the ratio 2:3. You then add up the 2 colours of paint
6 0
2 years ago
If a sample of n = 4 scores is obtained from a population with μ = 70 and σ = 12, then what is the z-score corresponding to a sa
ratelena [41]

Answer:

Z = 1

Step-by-step explanation:

To solve this question, we have to know what a z-score is and the central limit theorem.

Z-score:

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central limit Theorem:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation, which is also called standard error s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 70, \sigma = 12, n = 4, s = \frac{12}{\sqrt{4}} = 6

What is the z-score corresponding to a sample mean of M = 76?

This is Z when X = 76. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{76 - 70}{6}

Z = 1

5 0
3 years ago
EFGH is translated 1 unit to the right and 5 units down.
myrzilka [38]

Answer:

C I got it right on the test I took and I had the same question.

Step-by-step explanation:

 

6 0
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