Alicia says that 6 ÷ 2 + 5 is the same as 5 + 6 ÷ 2. Is Alicia correct or incorrect? Explain.

Answer:

Follows are the solution to this question:

Step-by-step explanation:

formula for perimeter of semicircle:

[tex]C= \pi \times d[/tex]

Area of Semicircle:

[tex]A= \frac{\pi r^2}{2}[/tex]

For question 5:

[tex]\to d=17 \ m[/tex]

[tex]\to C= \pi \times d= 3.14 \times 17= 53.38 =53 \\\\[/tex]

[tex]\to A= \frac{\pi \times r^2}{2}= \frac{3.14 \times 8.5^2}{2}=\frac{226.865}{2}=113.4325= 113[/tex]

For question 6:

[tex]\to d=10.5 \ in[/tex]

[tex]\to C= \pi \times d= 3.14 \times 10.5= 32.97 =33[/tex]

[tex]\to A= \frac{\pi \times r^2}{2}= \frac{3.14 \times 5.25^2}{2}=\frac{86.54625}{2}=43.273125= 43[/tex]

Answer:

y=6

Step-by-step explanation:

7(3y-1)=119      multiple 3y and -1 by 7

21y-7=119        add 7 to 119

21y=126          divide 126 by 21

y=6

Answer:

Step-by-step explanation:

Total pages = 12

Stamps placed on one side = 32x 12 = 384 stamps

Stamps placed on the second page = 32 x 12 = 384

Total stamps = 384+384 = 768

Answer:

18

Step-by-step explanation:

Answer: 18, 21, 24, 27, 30

Step-by-step explanation:

Answer:

n-5

Step-by-step explanation:

..................

Answer:

The second one. 5 - n

Step-by-step explanation:

5 - n because it says a number decreased by five which means n is subtracted by five

Answer:

$0.56 per foot

Step-by-step explanation:

2 yards= 6 feet

3.36/6= 0.56

Answer:

$0.56 per foot

Step-by-step explanation:

1 yd = 3 ft

2 yd = 6 ft

3.36/6 = 0.56

Answer:

Square Root of 81

Step-by-step explanation:

9 times 9 = 81

Answer:

x= -2

Step-by-step explanation:

:D

Answer: x = -5

Step-by-step explanation:

Answer:

H

Step-by-step explanation:

Sum of angles in a triangle is 180 degrees

That means

180= 25 + 45+ unknown angle

180= 70 + unknown angle

180 - 70 = unknown angle

110 = unknown angle

Answer:

175 I think

Step-by-step explanation:

I don't know really sorry

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer: yes you are correct 2 /1/2 is greater

Step-by-step explanation:

Answer:

2x-8=5x+3

Step-by-step explanation:

The first step: Subtract 2x, -8=3x+3

 Second: Subtract (-3), -11=3x

Answer:

90%

Step-by-step explanation:

Answer:

90%.

Step-by-step explanation:

50 is half of 100. 45 is half of 90.

So, 45 is 90% of 50.

Answer:

it equals 17 tenths

Step-by-step explanation:

Answer:

the answer will be 0.7 for sure

Step-by-step explanation:

for the steps

the question is given as eight tenths i.e 0.8 and another is given nine tenth i.e 0.9

so when you calculate (add) both

0.8+0.9

gives

0.7

Answer: All you have to do is since one batch needs 1 1/3 cup of walnuts multiply 1 1/3 to 3 3/4 = 3 1/4 cups

Step-by-step explanation:

Answer:

150 pages

Step-by-step explanation:

3/10 is equal to 0.3, or 30% of the book. We can set up an equation to find the total number of pages in the book, with x representing the number of pages.

0.3x=45

0.3x/0.3=45/0.3

x=150

Answer:

x = 129, rounded

Step-by-step explanation:

3x + 144 = 532

      -144   -144

3x = 388

divide both sides by 3

x = 129, rounded

Step-by-step explanation:

c.

Answer:

f=7/5x+27/5

Step-by-step explanation:

you just have to divide both sides by -5

Answer:

18

Step-by-step explanation:

-22-7(-5)-5

-22+45-5

-22+40

18

Answer:

It is given that Tawanna is asked to find the GCF of each term in the expression 2ab+8b.

Firstly she should find the factors of each term in the expression as :

2ab=1,2,a and b

8b=1,2,4,8 and b

Now, GCF is the greatest common factor, since the GCF of the above terms is 1,2 and b, thus she should use each common factor once.

She wrote the common factors twice which is the error in her solution, thus she should use each common factor once.

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Ok so if you are rounding it to the nearest tenths place the answer would be 6

hope that's right!!

Answer:

well if you want to get to a whole number it would be 6

Step-by-step explanation:

you get that by well let's say it was 5.5 the second number is over half so it would round up to a whole of 6 but if it was 5.4 it would round down to 5.

I can explain better if needed

Answer:

0.6826 = 68.26% probability that the first machine produces an acceptable cork.

0.933 = 93.3% probability that the second machine produces an acceptable cork.

The second machine is more likely to produce an acceptable cork.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

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

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

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.

What is the probability that the first machine produces an acceptable cork?

The first produces corks with diameters that are normally distributed with mean 3 cm and standard deviation 0.10 cm, which means that [tex]\mu = 3, \sigma = 0.1[/tex]

Acceptable between 2.9 and 3.1, which means that this probability is the pvalue of Z when X = 3.1 subtracted by the pvalue of Z when X = 2.9.

X = 3.1

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{3.1 - 3}{0.1}[/tex]

[tex]Z = 1[/tex]

[tex]Z = 1[/tex] has a pvalue of 0.8413

X = 2.9

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{2.9 - 3}{0.1}[/tex]

[tex]Z = -1[/tex]

[tex]Z = -1[/tex] has a pvalue of 0.1587

0.8413 - 0.1587 = 0.6826

0.6826 = 68.26% probability that the first machine produces an acceptable cork.

What is the probability that the second machine produces an acceptable cork? (Round your answer to four decimal places.)

For the second machine, we have that [tex]\mu = 3.04, \sigma = 0.04[/tex]. Same probability we have to find out. So

X = 3.1

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{3.1 - 3.04}{0.04}[/tex]

[tex]Z = 1.5[/tex]

[tex]Z = 1.5[/tex] has a pvalue of 0.9332

X = 2.9

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{2.9 - 3.04}{0.04}[/tex]

[tex]Z = -3.5[/tex]

[tex]Z = -3.5[/tex] has a pvalue of 0.0002

0.9332 - 0.0002 = 0.933

0.933 = 93.3% probability that the second machine produces an acceptable cork.

Which machine is more likely to produce an acceptable cork?

Second one has a higer probability, so it is more likely to produce an acceptable cork.

Answer: -2

Step-by-step explanation:

Subtract 13 on both sides

-7x = 14

Divide by -7 on both sides

x = -2

Answer: A (1:2)

Step-by-step explanation:

Since there are 12 puppies total and 8 of the puppies are yellow labs, there must be 12 - 8 = 4 black labs. Now, the ratio of black labs to yellow labs is 4:8 because there are 4 black labs and 8 yellow labs. However, we can simplify this ratio by dividing the entire ratio by 4. In this case, we would get (4/4):(8/4), which simplifies to 1:2, which is the answer.

Answer:

$10000

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 5%/100 = 0.05 per year,

then, solving our equation

P = 2000 / ( 0.05 × 4 ) = 10000

P = $ 10,000.00

The principal required to

accumulate interest of $ 2,000.00

on a rate of 5% per year for 4 years is $ 10,000.00.