Help Plis.......................

Answers

Answer 1

Answer:

Step-by-step explanation:

Two negative signs make a positive number. So -(-4) makes 4. I know it sounds weird, but thats what schools teach. Hope this helps!

Related Questions

Find the critical value necessary to form a confidence interval at the level of confidence shown below.

c=0.87

Answers

Answer:

the critical value for 0.87 level of confidence is 1.51

Step-by-step explanation:

Given the data in the question;

level of confidence = 0.87

now,

1 - c = 0.87

c = 1 - 0.87

c = 0.13

c/2 = 0.13/2 = 0.065

now

1 - c/2 = 1 - 0.065 = 0.935

so our level of significance ∝ = 0.935

Now, the critical value will be;

[tex]Z_{0.935[/tex] is obtained as follows;

P( Z < z ) = 0.935

so we find the value from ( standard normal distribution table )

P( Z < 1.51 ) = 0.935

Therefore, the critical value for 0.87 level of confidence is 1.51

Helppppppppp meeee pleaseeee

Answers

Answer:

99 kilograms

Step-by-step explanation:

if 1 tire is 11 kg then 9 tires is 99

1 tire = 11

9 tires= 11 * 9

=99 kg

99 kilograms I think

What is 863 divided by 4

Answers

The answer is : 215.75

Answer:

215.75

Step-by-step explanation:

. .

----

201
Which equation, when paired with y = 2x+5,
creates an inconsistent system?
O 2x + y = 5
o y = 2x + 5
O 2x - 4y = 10
O 2y - 4x = -10
10
X
-20
20
DONE
-101
-20

Answers

2y-4x=-10 is an answer
If you simplify this, you will get y=2x-5 which would represent that this line is parallel to the one above.

The pair of equations creates an inconsistent system will be y = 2x + 5 and 2y - 4x = -10. Then the correct option is D.

What is a linear equation?

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

If the slopes are equal but have different intercepts then the lines are parallel, then the system has no solution or is inconsistent.

The equation is given as,

y = 2x + 5

Check option D, then we have

2y - 4x = -10

y - 2x = - 5

y = 2x - 5

The slope of the lines is the same but with different intercepts.

Thus, the correct option is D.

More about the linear equation link is given below.

https://brainly.com/question/11897796

#SPJ7

If Sally purchases a car for $22,000 with a 5 year loan having a 2.5% interest rate, how much simple interest will she have to pay on the loan?

Answers

Answer:

$2750 worth of simple interest

Step-by-step explanation:

The equation for simple interest is to multiply the amount by the time by the rate:

22000 * 5 * 0.025 = 2750

George has $12, which is $7 more than Tom has. How much money does Tom have?

Answers

Tom has $5. 12-7 =5.

The inverse of the function

Answers

Answer:

It should be B

Step-by-step explanation:

The answer would be B because when you are finding the inverse you would need to set the variable in this case f(x) to f(x)^-1. Which means you need to divide each term by 3 and then after solve for y

Hailey made the following statement: "It is impossible to build a rectangular prism with a volume of 40 units 3 if one side measures 5 units." Key represents 1 cubic unit Select the two figures below that prove Hailey's statement is false.(no links/files)

Answers

Answer:

The answer is 3) and 4)

Step-by-step explanation:

They both have 40 units and a side that measures 5 units

The average weekly salary of two employees is $5250. One makes $500 more than the other. Find their salaries.

Answers

Answer: thier salaries are $5000 and $5500

Step-by-step explanation:

Let the average weekly salary of one employee be =x

And that of the other employee be = x+500

Such that if thier average of their salaries= $5250

So, their total salary= $5250 x 2=10,500

The equation to solve each employee salary becomes

x+x+500=10,500

2x+500=10,500

2x=10,500-500

2x=10,000

x=10,000 /2

x= first employee salary =$5000

second employee = x+500 =$5500

Graph the function
y = 2x^2+4x

Answers

Answer:

Hey!

Step-by-step explanation:

Hope this helps you!

Best of luck! <3

I have this trigonometry worksheet, I just need help with questions from 18 to 28. thanks :)

Answers

18. sin29= 2/x
2/sin29=x
x=4.1
And I honestly have no idea how to do 28

Each students in class 38 students was asked to report how many siblings he has. Data a 0/38 Data b 1/38 Data c 13/38 Data 8/38 Based on the data, estimate the probability that a randomly selected students from this class is an only child.

Answers

Answer:

8/38

Step-by-step explanation:

You got it right, trust yourself

Question
The area of a triangular painting is 50 square inches. The base is 20 inches. What is the height?

Answers

Answer:

2.5 inches

Step-by-step explanation:

Area= 50 square inches

Base= 20 inches

Height=?

Area= base×height

50= 20× x

50= 20x

x= 50/20

= 2.5

Hence the height is 2.5 inches

Answer:5 inches

Step-by-step explanation:

Test Your Skills
4.
1. The ratio of girls to boys in the
art club is . If there are 36 boys
in the club, how many girls are in
the club?

Answers

Answer:

complete your question po kasi di ko po masasagutan yan kung hindi po yan completo

Supposed that the weight (in pounds) of an airplane is a linear function of the amount of fuel (in gallons) in the tank. When carrying 14 gallons of fuel the airplane weighs 2177 pounds when carrying 42 gallons of fuel it weighs 2331 pounds. How much does the airplane weigh if it is carrying 48 gallons of fuel?

Answers

Answer:2885

Step-by-step explanation:

Find the unknown number of 10w = 25

Answers

Answer:

w=5/2 or W=2 1/2 if decemial 2.5

Step-by-step explanation:

Fill in the blanks to complete the sentences below. (a) As the number of samples increases, the proportion of 95% confidence intervals that include the population proportion approaches ______. (b) If a 95% confidence interval results in a sample proportion that does not include the population proportion, then the sample proportion is more than ______ standard errors from the population proportion. (This is a reading assessment question. Be certain of your answer because you only get one attempt on this question.)

Answers

Answer:

a) the proportion of 95% confidence intervals that include the population proportion approaches 0.95

b) Sample proportion does not include the population proportion then the sample proportion is more than 1.96 standard error from the population proportion

Step-by-step explanation:

Given the the data in the question, confidence level is 95%.

In this case as the number of samples increases, the proportion of 95% confidence intervals that include the population proportion approaches 0.95. hence the expected value of the proportion.

Given the the data in the question, confidence level is 95% and sample proportion

we know that In normal distribution 68% confidence indicate one standard deviation, 95% confidence indicate 2 standard deviation while 99.97% confidence indicate 3 standard deviation.

The sample proportion does not include the population proportion, in 95% confidence from the standard normal table 0.95 value lies within the critical value of 1.96 approximately 2.

hence ( z =2 ) that satisfied the 1.96 standard error from the population proportion

hence, Sample proportion does not include the population proportion then the sample proportion is more than 1.96 standard error from the population proportion

Using confidence interval concepts, it is found that:

a) As the number of samples increases, the proportion of 95% confidence intervals that include the population proportion approaches 95%.

b) If a 95% confidence interval results in a sample proportion that does not include the population proportion, then the sample proportion is more than 2 standard errors from the population proportion.

Item a:

For a x% confidence interval, approximately x% of confidence intervals will include the population proportion, and this percentage approaches x as the number of intervals increase, hence, the correct sentence is:

As the number of samples increases, the proportion of 95% confidence intervals that include the population proportion approaches 95%.

Item b:

By the Empirical Rule, 95% of the measures are within 2 standard deviations of the mean, hence, the correct sentence is:

If a 95% confidence interval results in a sample proportion that does not include the population proportion, then the sample proportion is more than 2 standard errors from the population proportion.

A similar problem is given at https://brainly.com/question/23536238

Laurie is working on a carpentry project. She has n feet of wood. While working, she realized that she needs 1/4
more wood than she currently has. Which expressions represent the total amount of wood she needs for her project? Select all that apply.)
A.n+1/4
B.5/4n
C.1/4n
D.5/4+n
E.n+1/4n

Answers

Answer:

E because if she needs 1/4 more than what she already has then you have to multiply 1/4 of the wood she already has and add the wood that she already has

Plz help me well mark brainliest if correct!!

Answers

D. 11 hours and 20 minutes

As a nurse, part of your daily duties is to mix medications in the proper proportions for your patients. For
one of your regular patients, you always mix Medication A with Medication B in the same proportion. Last week, your patient's doctor indicated that you should mix 120 milligrams of Medication A with 180
milligrams of Medication B. However this week, the doctor said to only use 165 milligrams of Medication B.
How many milligrams of Medication A should be mixed this week?
Answer:

Answers

Hi ^^

-------------------------

Solution:

Step one- Set up a ratio:

· Originally the ratio was: 110:143, make that equivalent to x:117

--> 110/143 = x/117 <-- notice this is A/B = A/B

--> to solve for x, just multiply by 117

x = 110 * 117 / 143 = 90 mg

----------------------------------------------------------------------------------------

·You should use 90 mg of medication A

oki baiiii ^^

Can someone help me please ?

Answers

Answer:

It's 48 degrease

Step-by-step explanation:

Both of the other angles are the same which means that the other two are gonna be the same.

Select the statement that describes this expression: 5 x (3 + 4) − 4. (2 points)

a
5 times the sum of 3 and 4, then subtract 4

b
5 times 3 plus 4 minus 4

c
5 more than the sum of 3 and 4, and then subtract 4

d
5 times 3 plus the difference of 3 and 4

Answers

The answer is c answer on Ed

Is (9,5) a solution to this system of inequalities?
X + y > 14
7x + 13y > 15
yes
no

Answers

Answer:

yes it is..............

reduce 12/20 to lowest term

Answers

Answer:

3/5

Step-by-step explanation:

12/20

(divide both by 2)

12/2= 6

20/2=10

6/10

(divide by both by 2)

6/2= 3

10/2= 5

3/5

How many curtains can be made from 20 meters of cloth if each curtain requires 2 and 1/2 meters ?

Answers

Answer :- 20/2.5 = 8

......

The total number of curtains that can be made is 8 if each curtain requires 2 and 1/2 meters

What is a fraction?

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

It is given that:

20 meters of cloth if each curtain requires 2 and 1/2 meters.

The total length of the cloth = 20 meters

Each curtain requires 2 and 1/2 meters

= 2 + 0.5

= 2.5 meters

Total number of curtains = 20/2.5

Total number of curtains = 8

Thus, the total number of curtains that can be made is 8 if each curtain requires 2 and 1/2 meters

Learn more about the fraction here:

brainly.com/question/1301963

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This scale shows weight in pounds. How much do the apples weigh?

A. 3/4 lb.
B. 3 lb.
C. 3 1/4 lb.
D. 4 lb.

Answers

Answer:

where is the scale

Step-by-step explanation:

where is the scale

Answer:

What does the scale look like?

how can i solve this problem if its congruent or not

Answers

9514 1404 393

Answer:

∆BCR ≅ ∆BAR

x = 6

Step-by-step explanation:

For congruence, define point R where the altitude line meets segment AC.

The diagram shows you AR ≅ RC. You know BR ≅ BR by the reflexive property, and you know that ∠BRC ≅ ∠BRA = 90°. You can therefore claim ...

∆BCR ≅ ∆BAR . . . . by the SAS congruence postulate

To solve for x, you don't need to show congruence of the right triangles. You only need to realize that the markings on segment AC show the left half is the same length (x) as the right half. The Pythagorean theorem is used to find x.

x² +8² = 10²

x² = 100 -64 = 36

x = √36 = 6

The length of x is 6 units.

_____

As you can see here, an altitude that is a median divides the isosceles triangle into two congruent right triangles. (That altitude also bisects angle B.)

You may recognize that the side ratios in the right triangle are 8:10 = 4:5. The missing side completes the Pythagorean triple 3:4:5, so is 2·3 = 6 = x.

Find the value of
x
xx in the triangle shown below.
x
=
x=x, equals

∘
∘
degrees

5
8
∘
58
∘

x
∘
x
∘

6
6
6
6
5.8
5.8

Answers

Answer:

Step-by-step explanation:

he question lacks appropriate diagram. Find the diagram attached below.

From the isosceles triangle shown, we can see that it is made up of two right angled triangle.

Using the Pythagoras theorem to solve for the adjacent side of both right angled triangles we will have;

From the formula:

Hyp² = Opp²+Adj²

Adj² = Hyp² - Opp²

The hypotenuse and the opposite of both triangle is equal. Hence their adjacent side will also be equal.

Given Hypotenuse = √74

Opposite = 7

Adj² = Hyp²-Opp²

Adj² = (√74)² - 7²

Adj² = 74-49

Adj² = 25

Adj = √25

Adj = 5

The adjacent of both sides are equal

x = 2 × Adjacent side

x = 2(5)

x = 10

I WILL GIVE 100 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT.What is the solution to the inequality 3+5/7x>1+x?

Answers

Answer:

C: X <= 7

Step-by-step explanation:

Reimagine the inequality as

3 - 1 >= X - 5/7*X

2 >= 2/7*X

1 >= 1/7 * X

7 >= X

A square has side length 3 units. What is the length of the diagonal?
A. 3 units
B. 3/√2 units
C. 3√2 units
D. 6 units

Answers

Answer:

Step-by-step explanation:

The diagonal can be represented as the hypotenuse of a right triangle with 3 and 3 as its legs. Use the pythagorean theorem to get that 3^2+3^2=c^2. Simplify to 9+9=c^2 or 18=c^2. Square root both sides to get c=√18. Simplify to get c=√9*2 or c=3√2 for the diagonal.

The length of the diagonal of the square is (b) [tex]3\sqrt 2[/tex] units

The length of the diagonal of a square is calculated using the following Pythagoras theorem

[tex]d^2 = l^2 + l^2[/tex]

Where:

d represents the length of the diagonall represents the side length of the square

So, we have:

[tex]d^2 = 3^2 + 3^2[/tex]

Evaluate the like terms

[tex]d^2 = 2(3^2)[/tex]

Take the square roots of both sides

[tex]d =3\sqrt2[/tex]

Hence, the length of the diagonal of the square is (b) [tex]3\sqrt 2[/tex] units