Please help missed this lesson

Answer:

3 okkkkkkkkkyy667yytrty

Answer:

0.29

Step-by-step explanation:

2/7=0.285 or 2÷7= 0.285

then round to the nearest 100th

0.29

Using the z-distribution, it is found that the 95% confidence interval for the mean lifetime of this type of drill, in holes drilled, is (10.4, 13.94).

We are given the standard deviation for the population, hence, the z-distribution is used. The parameters for the interval is:

The margin of error is:

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which z is the critical value.

We have to find the critical value, which is z with a p-value of [tex]\frac{1 + \alpha}{2}[/tex], in which [tex]\alpha[/tex] is the confidence level.

In this problem, [tex]\alpha = 0.95[/tex], thus, z with a p-value of [tex]\frac{1 + 0.95}{2} = 0.975[/tex], which means that it is z = 1.96.

Then:

[tex]M = 1.96\frac{6.37}{\sqrt{50}} = 1.77[/tex]

The confidence interval is the sample mean plus/minutes the margin of error, hence:

[tex]\overline{x} - M = 12.17 - 1.77 = 10.4[/tex]

[tex]\overline{x} + M = 12.17 + 1.77 = 13.94[/tex]

The 95% confidence interval for the mean lifetime of this type of drill, in holes drilled, is (10.4, 13.94).

A similar problem is given at https://brainly.com/question/22596713

Answer:

Hence, answer is 34 peaches

Step-by-step explanation:

Analysis : Total peaches = 48 + 50

= 98

Let first one contained x peaches

: second basket will contain 6x peaches

--> x + 6x = 98

--> 7x = 98

--> x = 98/7 = 14

: 48 - 14 = 34 peaches will transfer from the first basket to second one

Add 3y² to both sides of the equation.

x = 1 + 3y²

- Vocab

· Equation

A mathematical statement that says two expressions have the same value; any number sentence with an   = .

· Expression

A mathematical symbol, or combination of symbols, representing a value, or relation.

· Combination

A selection in which order has no importance.

Answer:

12/20, 8/19

Step-by-step explanation:

Answer:

72

Step-by-step explanation:

Don't worry my friend, we have the power of order of operations!!

Okay, so first start by replacing the variables with the given numbers.

a(b - 1)^2 = 8(4 - 1)^2

Now do whats in the parentheses.

(4 - 1) =  (3)

Next, we do 3 x 3 . This is because the three is squared.

(3)^2 = 9

Finally, multiply by 8.

8 (9) = 72

Hope this helped! Please comment wether it does or not. :)

Answer:

15

Step-by-step explanation: trust me i have had the before

7. y=x+4

8. y=(-1/4)x+7

9. y=(-1/3)x-1

Answer:

Step-by-step explanation:

Add all sides together and set equal to 360

x+1 + x+2 + x+3 + x+4 =360

Combine Like Terms

4x + 10 = 360

get rid of the ten on both sides

4x = 350

Divide both sides by 4

x = 87.5

Answer:

145

Step-by-step explanation:

just keep adding 15. Or there are 5 numbers in the sequence already so

9-5=4

4×15=60

85+60=145

Answer

Isosceles

Step-by-step explanation:

You know two points for the leg (4,3) and (3,4). If you look at the x coordinate you know that one of the legs will be longer than the other because 4>3. So the triangle is isosceles.

Answer:

25 & 5

Step-by-step explanation:

x+x+20=30

2x+20=30

2x=10

x=5

x+20=25

If One number exceeds another by 20 and their sum is 30 then the two numbers are 5 and 25.

Two or more expressions with an Equal sign is called as Equation.

Given that One number exceeds another by 20 and their sum is 30.

By the given data the two numbers are x+20 and x

As the sum of two numbers is 30

x+x+20=30

Add the like terms

2x+20=30

Subtract 20 on both sides

2x=10

Divide both sides by 2

x=5

So the two numbers are 5 and 5+20 which is 25

Hence, the two numbers are 5 and 25.

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Answer: [tex]2\sqrt{3}[/tex]

Step-by-step explanation:

Simplify the following radical:

[tex]\sqrt{12}[/tex]

Find the prime factors of 12:

2² × 3

[tex]\sqrt{2^{2} (3)}[/tex] = [tex]2\sqrt{3}[/tex]

Answer: Total interest will $1800 after 5 years.

Step-by-step explanation: It is given that the principle amount is $6000.

Rate of interest rate is 6% per annum.

Total interest is $1800.

Formula for simple interest is

Where, P is principle, r is rate of interest in percent and t is time in years.

Substitute P=6000, r=6 and I=1800 in the above formula.

Divide both sides by 360.

Therefore the total interest will $1800 after 5 years.

Answer:

738 times

Step-by-step explanation:

trough dependent sarcasm

Answer:

30

Step-by-step explanation:

Answer:

The answer is C

Step-by-step explanation:

ABD IS TRUE

Answer:

45x + 34

Step-by-step explanation:

this is your answer!

Answer: Someone tell me if i'm wrong but from this I think it might be the fourth one (?)

Step-by-step explanation:

y=1

A straight line in slope (m) and intercept (c) form is:y=mx +c

In this example, y is a straight line of slope 0 and y −intercept of 1 ∴ y =0⋅  

x+1

Hence, the graph of y  a is straight line parallel to the x −axis through the point

(0,1)

Answer:

1 / 25

Step-by-step explanation:

4% in fraction form is 1 / 25

Hello there! (:

4% =4/100

Our fraction can be simplified:

2/50

Divide by 2, because it's not it its simplest form:

1/25

Hope it helps!

#CarryOnLearning

[tex]SparklingFlower[/tex]

Answer:

Which traits did Ben Franklin want to develop in himself?

Generosity, kindness, tolerance

Helpfulness, love, involvement

Acceptance and knowledge of the world

Temperance, efficiency, sincerity, and the avoidance of idleness and extravagance

Step-by-step explanation:

Answer:

Step-by-step explanation:

The cost price of cow = Rs.80

Explanation:

[tex] \sf x + x \: of \: x\%= 144 \\ \\ \sf \implies x + \frac{x \times x}{100} = 144 \\ \\ \sf \implies {x}^{2} + 100x - 14400 = 0 \\ \\ \sf \implies x(x - 80) + 180(x - 80) = 0 \\ \\ \sf \implies x + 180 = 0 \\ \\ \sf \implies x = - 180 \\ \\ \sf \therefore \: {\boxed{ \sf \pink{x = 80}}}[/tex]

The cost price of cow =Rs80

Step-by-step explanation:

The cost price of cow =Rs80

Answer:

88%

Step-by-step explanation:

(73+75+84+x)/4=80

x4 to both sides

73+75+84+x=80x4

73+75+84+x=320

232+x=320

x=320-232

x=88

Answer:

88

Step-by-step explanation:

80*4 = 320   320- (73 + 75 +84 ) = 88    we  can cross out 320/80 = 32/8 and 232/320  = 232 /4   (320/4) and divide each side by 4 = 58 / 80 then 29/40 = 40-29 = 11 then decimalise  /10 = 1.1   then multiply 80 * 1.1 = 88

Step-by-step explanation:

since there are 26 letters in the alphabet

and there are 10 numbers

without restrictions

10×10×10×26×26×26×10×10×10=17,576,000,000 reservation numbers are possible

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. The number of different reservation numbers that are possible is 17,576 × 10⁶.

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.

Given that A hotel reservation number consists of 3 digits, followed by 3 letters, followed by 3 digits.

Since each place can be taken by the digits each place will have 10 possible outcomes, [0,9]. Similarly for each place that can be taken by the alphabet can be taken by 26 different digits.

Therefore, the number of different reservation numbers that are possible is,

Number of different reservations = 10 × 10 × 10 × 26 × 26 × 26 × 10 × 10 × 10

                                                       = 17,576 × 10⁶

Hence, the number of different reservation numbers that are possible is 17,576 × 10⁶.

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Answer:

no

Step-by-step explanation:

no

Answer:

[tex]\frac{7x-12}{(x-6)(x+2)}[/tex]

Step-by-step explanation:

We solve this equation by combining like terms [tex](-x+8x)=7x[/tex]

Now we rewrite the equation [tex]\frac{7x-12}{x^2-4x-12}[/tex]

We factorize [tex]x^2-4x-12[/tex] and we get [tex](x-6)(x+2)[/tex]

So our simplified answer would be [tex]\frac{7x-12}{(x-6)(x+2)}[/tex]

Answer:

3 minutes

Step-by-step explanation:

time = distance / speed

t = 2.5 / 50

t = 0.05 hours

0.05 hr * 60minutes /hr = 3 minutes

3 minutes

The angles of each letter are as follows:

∠a = 124°

∠b = 56°

∠c = 56°

∠d  = 38°

∠e = 38°

∠f  =  76°

∠g  = 66°

∠h = 104°

∠k = 76°

∠n = 86°

∠p = 38°

∠a = 180 - 56 = 124°(total angle on a straight line)

∠b = 56°(vertically opposite angles)

∠c = 56°(corresponding angle to ∠b) Note this is possible because there are 2 parallel lines and a transversal.

2∠d + ∠d + 66 = 180 (sum of angles in a triangle)

3∠d = 180 - 66

3∠d = 114

∠d = 114 / 3

∠d  = 38°

∠d  = ∠e (given)

Therefore,

∠e = 38°

∠d + 66 + ∠f = 180

38 + 66 + ∠f  = 180

∠f  =  76°

Recall external angle of a triangle is equals to the sum of the opposite angles. Therefore,

∠f  + ∠g  = ∠d + ∠h

∠f  + ∠g  = 38 + 104

76 + ∠g  = 142

∠g  = 66°

∠d  is one of the base angles of an isosceles triangle. Therefore base angles of the isosceles triangle are equal. This means the other base angle opposite ∠d in the isosceles triangle is congruent to ∠d.

Therefore,

2∠d + ∠h = 180(sum of angles in a triangle)

76 + ∠h = 180

∠h = 180 - 76

∠h = 104°

∠h + ∠k = 180 (sum of angles on a straight line)

∠k = 76°

∠n = 180 - ∠d - ∠c (angles on a straight line)

∠n = 86°

∠p = 180 - 56 - ∠n (sum of angle in a triangle)

∠p = 38°

Therefore, the angles of the letters are:

∠a = 124°

∠b = 56°

∠c = 56°

∠d  = 38°

∠e = 38°

∠f  =  76°

∠g  = 66°

∠h = 104°

∠k = 76°

∠n = 86°

∠p = 38°

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