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castortr0y [4]
3 years ago
9

ms shah grades 3402 math problems during 5th period this is 54% of the total number of problems she need to grade what is the to

tal number of problems she needs to grade
Mathematics
1 answer:
olga_2 [115]3 years ago
6 0
The total number of problems she needs to grade is 6.
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Can you help! ......
Verdich [7]

Answer:

D

Step-by-step explanation:

If you use the distributive property, you'll find the expression is equal to 8p + 16q. None of the answers match that; A has 4p instead of 8p, B has 4q instead of 16q, and C adds up to 5p + 16q instead of 8p + 16q.

3 0
3 years ago
Read 2 more answers
The equation R=10a-20 represents the revenue R (in dollars) you make by spending A dollars on advertising. You revenue totaled $
timurjin [86]
R = 10a - 20
ur revenue totaled 110...so R = 110

110 = 10a - 20
110 + 20 = 10a
130 = 10a
130/10 = a
13 = a <== so u spent $13 on advertising
6 0
3 years ago
Read 2 more answers
(6 points) Elderly drivers. A polling agency interviews 748 American adults and finds that 464 think licensed drivers should be
NNADVOKAT [17]

Answer:

1) p-hat = 0.6203

2) std error = 0.0177

3) margin of error = 0.0291

4) (0.5912, 0.6494)

5) minimum sample size = 1683

Step-by-step explanation:

1.  The point estimate for the proportion of American adults that think licensed drivers should be required to retake their road test once they reach 65 years of age can be calculating dividing the number of people who answer Yes by the total of people interviewed:

\hat p=X/N=464/748=0.6203

2. The standard error of a proportion can be expressed as:

se_p=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.6203*0.3797}{748}}=\sqrt{0.000314877}=0.0177

3. The z-value for a 90% CI is z=1.64485.

The margin of error can be expressed as:

me=z\cdot se_p = 1.64485*0.0177=0.0291

4. The lower and upper limits can be calculated as:

LL=\hat p - z*se_p=0.6203-0.0291=0.5912\\\\\\UL=\hat p + z*se_p=0.6203+0.0291=0.6494

5. To have a margin of error of no more than 3.2% of the sample proportion, we have to first calculate what margin of error gives 3.2% of the proportion.

me=0.032*\hat p=0.032*0.6203=0.0198

This margin of error can be related to the sample size as:

me=z*se_p=z*\sqrt{\frac{p(1-p)}{n}} =1.645\sqrt{\frac{0.6203*0.3797}{n}}=0.0198\\\\1.645\sqrt{\frac{0.2355}{n} }=0.0198\\\\  \frac{0.2355}{n} =(0.0198/1.645)^2=0.0120^2=0.00014\\\\n=0.2355/0.00014\\\\n=1682.14\approx1683

5 0
3 years ago
Please help me solve
jonny [76]

Answer:

a(67) = 190

Step-by-step explanation:

a(n) = a(n-1) + 3

Now for a(n + 1):

a(n+1) = a(n) + 3

Replacing a(n):

a(n+1) = a(n-1) +3 +3

From there you can see that +3 is multiplied by the number of terms

a(67) = a(0) + 3 * 67

a(67) = -11 + 201 = 190

3 0
3 years ago
What property of multiplication allows us to multiply in any order
finlep [7]

Answer:

Its B i did this for math

Step-by-step explanation:

7 0
3 years ago
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