common
factors of 10 and 20​

Answer:

Step-by-step explanation:

2(x-2)=3x+3(2x+1)

2x-4=3x+6x+3

2x-4=9x+3

2x-9x=3+4

-7x=7

x=7/-7

x=-1

Answer:

$23.25

Step-by-step explanation:

12+11.25

Answer:

candy bars = a

cupcakes = b

a=1.5$

b=2.25$

Step-by-step explanation:

candy bars = a

cupcakes = b

1)5a+2b = 12

2)3a + 3b = 11.25

We can understand

3a + 3b = 3(a+b)= 11.25

a+b = 11.25÷3 = 3.75

from No.2 equation.

than we do

(5a+2b) - 2(a+b)

and we got 3a

so

12 - 7.5 = 4.5 = 3a

a=1.5$

b=2.25$

Answer:

Let's solve for x.

y=12x

Step 1: Flip the equation.

12x=y

Step 2: Divide both sides by 12.

12x /12 = y /12

x= 1 /12 y

Answer:  x= 1 /12 y

Step-by-step explanation: Hope this helps :D

Answer:

Greater than $144.49.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of $143.311 and standard deviation of $3.9988.

This means that [tex]\mu = 143.311, \sigma = 3.9988[/tex].

Approximately 38.34% of days IBM had a stock price greater than what dollar amount?

Greater than X when Z has a p-value of 1 - 0.3834 = 0.6166, so X when Z = 0.295.

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

[tex]0.295 = \frac{X - 143.311}{3.9988}[/tex]

[tex]X - 143.311 = 0.295*3.9988[/tex]

[tex]X = 144.49[/tex]

Greater than $144.49.

Answer:

H0 : the treatment has no effect

Step-by-step explanation:

The test is formulated as hypothesis . Here the test ist that whether the treatment has  affected or not . So the null hypothesis can be formulated as

H0 : the treatment has no effect

against the claim

Ha: the treatment has an effect.

The null hypothesis  is the test performed and the alternate hypothesis is the claim against the test. Therefore they are opposite of each other.

Answer:

40.84 to nearest hundredth.

Step-by-step explanation:

C = pi * d

= pi * 13

= 40.8407

Step-by-step explanation:

Problem #1

alright, so it would be 7 1/4-6 3/8=7/8

we can check by adding:

6 3/8+7/8=7 1/4.

Problem #2

we can do the same for this one!

8 1/4-7 3/8=7/8

to check:

7/8+7 3/8=8 1/4

Answer:

$75.5

Step-by-step explanation:

The first step is to calculate the percentage decrease

= 100-18

= 82%

Therefore the original cost of the shirt before the discount can be calculated as follows

= 82/100 × x = 61.91

= 82x/100= 61.91

Cross multiply

82x= 100×61.91

82x= 6191

x = 6191/82

= 75.5

Hencd the original cost of the shirt is $75.5

Answer:

75.50

Step-by-step explanation:

Answer:

The null hypothesis should be [tex]H_0: \mu = 12[/tex]

The alternate hypothesis should be [tex]H_1: \mu \neq 12[/tex]

Step-by-step explanation:

You wondered if the sugar content in energy drinks is really the same as labeled in the products. The disclosure on Red Bull 12 oz.

At the null hypothesis, we test if the sugar content is the same labeled, that is:

[tex]H_0: \mu = 12[/tex]

At the alternate hypothesis, we test if the sugar context is different from the labeled, that is, different of 12.

[tex]H_1: \mu \neq 12[/tex]

Answer:

30 More minutes

Step-by-step explanation:

3/4 of an hour is 45

1/4 is 15

45-15 is 30

Answer:

1 hour

Step-by-step explanation:

Answer:

ok so a it' probabily 21 or a number between 1-10

Step-by-step explanation:

Answer:

q.10 142 degree

q.11 x=11

q.12 complementary angles

Answer:

A

you fist have to gather your resources

Answer:

i guess D

because it is most important to understand the problem before going to any further step or conclusions.

Answer: 5/13

Step-by-step explanation:

The probability that when she opens a random picture from the computer folder, it will be a blurry picture she took with her cell phone is 7%.

Probability is the likelihood or tendency that something will occur.

Probablility of blurry picture=(134-86)×0.2/134

Probablility of blurry picture=48×0.2/134

Probablility of blurry picture=9.6/134×100

Probablility of blurry picture=7.16

Probablility of blurry picture=7% (Approximately)

Thus, the probability that when she opens a random picture from the computer folder, it will be a blurry picture she took with her cell phone is 7%.

Learn more about probability here:https://brainly.com/question/24756209

Answer:

me no understand plz ask a teacher

Answer:

127

Step-by-step explanation: The total value of angles in a 6 sided figure is 720 degrees. The total value of the angles except x is 593 degrees. Subtract 593 from 720 to get your x which is 127.

Answer:

Step-by-step explanation112+133+128+100+120+x=720 x=720-593 x=127

Answer:

V=326.725636 or V=104[tex]\pi[/tex]

Step-by-step explanation:

V=[tex]\pi[/tex][tex]r^{2}[/tex]h

V=[tex]\pi[/tex][tex]2^{2}[/tex](26)

V=[tex]\pi[/tex]4(26)

V=326.725636

Answer:

Step-by-step explanation:

(number of sides-2)*180 = (6-2)*180 = 720°

a= 720/6= 120°

lines form 180° angles

b= 180-120= 60°

sum of angles in a triangle is 180, and the angles are ≡

c=180/3 = 60°

c and d are supplementary angles (they add to 180)

d= 180-60 = 120°

d ≡ e+e because are vertical angles

e= 120/2 = 60°

sum of angles in a triangle is 180

f= 180 -90-60 = 30°

(number of sides-2)*180 = (5-2)*180 = 540°

g= 540/5= 108°

Answer:

Step-by-step explanation:

5.

3x-1 = 4x+13

-1=x+13

12=x

3(12)-1

36-1

Answer: 35

Second 5.

I'm not completely sure what this is referring to (please tell me if there is another part for this because there isn't any numbers such as <1 shown on the picture.)

6.

90+40+x=180

130+x=180

50=x

Answer: 50

7.

x+71=90

x=19

Answer: 19

Answer:

4x7

Step-by-step explanation:

4x7=28

4+4+4+4+4+4+4=28

--Answer--

4 x 7 = 28

4 + 4 = 8 <- x 3 + 4 = 28

or splitting it up in some way.

Answer:

the actual hourly percent increase is 6.823 %

Step-by-step explanation:

Given that data in the question;

rate chemical decomposes increasing continuously at 6.6 %,

r = 6.6% = 0.066

actual hourly percent increase = ?

Now,

hourly percent increase = ( [tex]e^r[/tex] - 1 ) × 100%

we substitute

hourly percent increase = ( [tex]e^{0.066[/tex] - 1 ) × 100%

hourly percent increase = ( 1.06823 - 1 ) × 100%

hourly percent increase = 0.06823 × 100%

hourly percent increase = 6.823 %

Therefore, the actual hourly percent increase is 6.823 %

Answer:

[tex]total = 26 + 4 = 30 \\ probability = \frac{4}{30} \\ = 0.13[/tex]

Hope This Helps!!!

Hope This Helps!!!Have a great day!!!

Answer:

300litres

Step-by-step explanation:

capacity of water tank=1000litres

7/10 parts of tank is emptied,

so, to know the litres of water left in the tank has to be equal to 1000litres-emptied tank

let X to represent water left in the tank

X=1000litres-(7/10*1000litres)

X=1000litres-700litres

X=300litres

hence, litres of water left in the tank =300litres

since, full tank is 10/10 and you know the emptied tank has 7/10. meaning the remaining part of water is

10/10-7/10

3/10 of the tank with water

therefore, 3/10*1000litres

300litres.

Answer:

x=4

Step-by-step explanation:

Answer:

C=6.6666666666666666666666666

Answer:

[tex]D.\frac{2}{6}[/tex]

Step-by-step explanation:

√15 = 3.87298334621

11/25 = 11 ÷ 25 = 0.44

3/20 = 3 ÷ 20 = 0.15

2/6 = 2 ÷ 6 = 0.33333333333

Answer:

The confidence interval will be "41.04, 43.81".

Step-by-step explanation:

Given that,

Sample size,

n = 10

Sample total,

423.5

Sample mean,

[tex]\bar X =\frac{423.5}{10}[/tex]

   [tex]=42.35[/tex]

Sample variance,

[tex]s = \sqrt{4.5894}[/tex]

  [tex]=2.1423[/tex]

[tex]df=n-1[/tex]

   [tex]=9[/tex]

[tex]t^*=18331[/tex]

Now,

The margin of error will be:

⇒ [tex]E=\frac{s\times t^*}{\sqrt{n} }[/tex]

       [tex]=\frac{2.1423\times 1.8331}{\sqrt{9} }[/tex]

       [tex]=\frac{3.928}{3 }[/tex]

       [tex]=1.309[/tex]

hence,

The 90% confidence level will be:

= [tex](\bar X-E),(\bar X+E)[/tex]

By substituting the values, we get

= [tex](42.35-1.309),(42.35+1.309)[/tex]

= [tex](41.04),(43.81)[/tex]