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DiKsa [7]
3 years ago
14

The value of 3^4+5•5=

Mathematics
1 answer:
balandron [24]3 years ago
5 0

Answer:

106

Step-by-step explanation:

3^4=81

5·5=25

81+25=106

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Show that the following statement is an identity by transforming the left side into the right side. sin θ (sec θ + csc θ) = tan
ExtremeBDS [4]

Answer:

Step-by-step explanation:

Required to prove that:

Sin θ(Sec θ + Cosec θ)= tan θ+1

Steps:

Recall sec θ= 1/cos θ and cosec θ=1/sin θ

Substitution into the Left Hand Side gives:

Sin θ(Sec θ + Cosec θ)

= Sin θ(1/cos θ  + 1/sinθ )

Expanding the Brackets

=sinθ/cos θ + sinθ/sinθ

=tanθ+1 which is the Right Hand Side as required.

Note that from trigonometry sinθ/cosθ = tan θ

8 0
3 years ago
Cindy has 89 coins. If 15% are dimes, how many are not
Bumek [7]
Hi, 
to find out the answer you need to divide 89 by 10 than by 5. Add those two answers together which is 23.73. That answer is dimes so 89-23.73=65.27..:) you could round the number up. I hope it helps!!!
7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Cbf%203x%2B9%3D-18" id="TexFormula1" title="\bf 3x+9=-18" alt="\bf 3x+9=-18" align="absmiddl
Studentka2010 [4]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

value of x is ~

  • \boxed{ - 9}

Here's the solution teeny ~

  • 3x + 9 =  - 18

  • 3x =  - 18 - 9
  • 3x =  - 27

  • x =  - 27 \div 3

  • x =  - 9

Hope it helps ~

6 0
3 years ago
Read 2 more answers
A drug company is testing a new drag which is supported to reduce blood pressure. From the nine people who are used as subjects,
Pie

Answer:

The 95% confidence interval for the mean change in blood pressure, \bar{x}, is 1.744 < \bar{x} < 2.816

Step-by-step explanation:

The parameters given are;

The number of people in the sample, n = 9

The average drop in blood pressure, \bar{x} = 2.28 points

The standard deviation, σ = 0.82

The confidence level = 95%

The formula for confidence interval with a known mean is given as follows;

CI=\bar{x}\pm z_{\alpha/2} \dfrac{\sigma}{\sqrt{n}}

Where:

z_{\alpha/2} = z - score at 95% confidence level = 1.96

We therefore have;

CI=2.28 \pm 1.96 \times \dfrac{0.82}{\sqrt{9}}

Which gives the 95% confidence interval for the mean change in pressure, \bar{x}, is given as follows;

1.744 < \bar{x} < 2.816

6 0
3 years ago
Cheryl bought 16 pounds of apples for $12. How much did it cost per
algol [13]

Answer:

.75

Step-by-step explanation:

$12 / 16 = $0.75

8 0
2 years ago
Read 2 more answers
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