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liq [111]
4 years ago
7

Explain how you would solve the problem below using PEMDAS. Explain what you would do first, second, third, fourth and so on to

solve. Use your PEMDAS vocabulary and tell us exactly how you would solve this problem.
5 – 4 ÷ 2 + 7
Mathematics
2 answers:
olga2289 [7]4 years ago
8 0
4 divided by 2 =2. 5–2+7. 2+7=9. 5–9= -4
Lera25 [3.4K]4 years ago
6 0
P= Parentheses
E=exponents
M= Multiplication
D= Division
A=Addition
S=Subtraction
you dont have any parentheses, exponents, or multiplication so you start from division
4/2 =2
5-2+7
2+7 = 9
5-9=4
the answer is 4
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Find x using the trig ratios please
Karo-lina-s [1.5K]

Answer:

12.9

Step-by-step explanation:

cos 72 = 4/x

x = 4/cos72

x = 12.9

7 0
3 years ago
According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 20
Murljashka [212]

Answer:

There is not enough evidence to support the claim that Alaska had a lower proportion of identity theft than 23%.  

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1432

p = 23% = 0.23

Alpha, α = 0.05

Number of theft complaints , x = 321

First, we design the null and the alternate hypothesis  

H_{0}: p = 0.23\\H_A: p < 0.23

This is a one-tailed test.  

Formula:

\hat{p} = \dfrac{x}{n} = \dfrac{321}{1432} =0.2241

z = \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

Putting the values, we get,

z = \displaystyle\frac{0.2241-0.23}{\sqrt{\frac{0.23(1-0.23)}{1432}}} = -0.5305

Now, we calculate the p-value from the table.

P-value = 0.298

Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept the null hypothesis.

Conclusion:

Thus, there is not enough evidence to support the claim that Alaska had a lower proportion of identity theft than 23%.

5 0
3 years ago
The scale factor of the dimensions of two similar wood floors is 4:3. It costs $207 to refinish the smaller wood floor. At that
Crank

Answer:

$276

Step-by-step explanation:

Create a proportion where x is the cost to refinish the larger wood floor:

\frac{4}{3} = \frac{x}{207}

Cross multiply and solve for x:

3x = 828

x = 276

So, to refinish the larger wood floor, it would cost $276

6 0
3 years ago
The price of a miniature toy car in 1968 was 0.295% of its current price. Today the car is a collector's item and is priced at $
valentinak56 [21]
$200 x 0.00295
= $0.59

The price of the toy car in 1968 was $0.59
8 0
3 years ago
Read 2 more answers
Jamie took 7 maths tests and got a score of 68,71,71,84,53,62 and 67 .What was Jamie's mode score?
Taya2010 [7]
The modal score would be 71. 71 appears the most in the list.
6 0
2 years ago
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