Mathematics High School


(12) - (23 +131) =
Express your answer in the form (a + bi),

Answers

Answer 1

Answer:

-142

Step-by-step explanation:

First solve parenthesis,

(12) - (23 +131) =

(12) -154

Finally subtract,

12-154

= -142

Related Questions

What is 6825x25 please help

Answers

Answer:

170625

Step-by-step explanation:

170,625.................

(20 points) A random sample of =1200 n = 1200 registered voters and found that 620 would vote for the Republican candidate in a state senate race. Let p represent the proportion of registered voters who would vote for the Republican candidate. Consider testing 0:=.50 H 0 : p = .50 :>.50 H a : p > .50 (a) The test statistic is z =

Answers

Answer:

The test statistic is Z = 1.157

Step-by-step explanation:

Given that:

The sample size n = 1200

The sample proportion of those that will vote for the Republican candidate is represented by [tex]\hat p = \dfrac{x}{n}[/tex]

[tex]\hat p = \dfrac{620}{1200}[/tex]

[tex]\hat p =0.5167[/tex]

The null and the alternative hypothesis can be computed as:

[tex]H_o: P=0.50 \\ \\ H_a :P>0.50[/tex]

The formula for the one-sample Z-test for the population proportion can be expressed as:

[tex]Z = \dfrac{\hat p - P_o}{\sqrt{\dfrac{P_o(1-P_o)}{n}}}[/tex]

[tex]Z = \dfrac{0.5167 - 0.5}{\sqrt{\dfrac{0.5(1-0.5)}{1200}}}[/tex]

[tex]Z = \dfrac{0.0167}{\sqrt{\dfrac{0.5(0.5)}{1200}}}[/tex]

[tex]Z = \dfrac{0.0167}{\sqrt{\dfrac{0.25}{1200}}}[/tex]

[tex]Z = \dfrac{0.0167}{\sqrt{2.08333333\times10^{-4}}}[/tex]

Z = 1.157

Testing the hypothesis, from the information given, it is found that the test statistic is z = 1.157.

The null hypothesis is:

[tex]H_0: p = 0.5[/tex]

The alternative hypothesis is:

[tex]H_1: p > 0.5[/tex]

The test statistic is given by:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

In which:

[tex]\overline{p}[/tex] is the sample proportion. p is the proportion tested at the null hypothesis. n is the sample size.

For this problem, the parameters are: [tex]p = 0.5, n = 1200, \overline{p} = \frac{620}{1200} = 0.5167[/tex]

Hence, the value of the test statistic is:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

[tex]z = \frac{0.5167 - 0.5}{\sqrt{\frac{0.5(0.5)}{1200}}}[/tex]

[tex]z = 1.157[/tex]

The test statistic is z = 1.157.

A similar problem is given at https://brainly.com/question/24166849

what's the c ??
easy question solve it and get points...
hints : a is 116 and b is 64​

Answers

Answer:

64 degrees

Step-by-step explanation:

It is the same amount of degrees as the original one.

The sum of four and the product of three and a number x

Answers

Answer:

4+3x

Step-by-step explanation:

4+3x

Mrs. Smith uses an automatic bill pay service to pay their monthly electric bill. So far this
year they have paid $843.36 over 8 months. How much has Mrs. Smith paid per month?

Answers

I think the answer is $105.42 per month

HELPPPPPPPP!!!!!!!!!!

Answers

Answer:

answer is b your welcome

I need help ASAP ???

Answers

the answer is Y=-3/4x +2 :)

Emily bought 2 burgers and 4 drinks for $20. Deja bought 2 burgers and 2 drinks for $14. What was the cost of each burger and each drink? HURRY IN TEST RN

Answers

Burgers cost $4
Drinks cost $3

Im really dumb i need help and can you also explain it

Answers

Answer: 11.67

Proportion:

12 = x
— —
6 5

Cross multiply.

70= 6x
Divide each side by 6

X= 11.67

y-3x=-2 and 7x- 2y=8​

Answers

Answer:

thx for the free

Step-by-step explanation:

1. Slope intercept form is 2
2. Slope intercept y=7/2x-4

Como pasar una potencia de negativa a positiva ?

Answers

Answer:

Cuando tenemos un exponente negativo hay que INVERTIR LA BASE para pasar a exponente positivo. Fíjate que el poner el inverso de la base no significa cambiar el signo de la misma. Al final el signo del resultado dependerá de si el exponente es par o impar. Con las fracciones ocurre lo mismo.

There are 1,620 minutes of music to be put on 9 CD's. If the same number of minutes fits on each CD, how many minutes of music fit on each CD?

Answers

Answer:

180 minutes

Step-by-step explanation:

take 1,620 divide it by 9 and there is your answer

hope this helped

Answe: 180 minutes

Step-by-step explanation                

you divide 1,620 divide it by 9 and there is your answer    

Kate wants to spend less than $100 per day to rent a car. A car rents for $45 per day plus $0.25 per mile. Write, solve, and graph an inequality for the amount of miles she is able to drive while staying within her budget.

Answers

Money to be spent per day <$100
To rent a car:
Minimum amount per day= $45
Amount per mile= $0.25

Hence amount spent depends on distance travelled.
If distance travelled= x; fee for travel= 0.25x

Hence finally we need the fare to be less than $100
And fare is $45+0.25x

So the final inequality is 0.25x+45<100.

Hope it helps.

Milan bought 13 pounds of rice for $7. How many dollars did he pay per pound of rice?

Answers

Answer:

$1.86

Step-by-step explanation:

You would do 13/7 which is 1.85714... which when rounded to the nearest hundredth is 1.86

Hope this helps!

Answer:

About $0.54 per pound

Step-by-step explanation:

7  ÷  13 = 0.538461

What is the slope of the line that passes through the points (-2,8) and (-22,8)

Answers

Answer: m = 0

Step-by-step explanation:

Answer:

m=0

Step-by-step explanation:

The slope formula is:  m=y1=y2/x2=x1

where (x₁, y₁) and (x₂,y₂) are the points on the line.

The points given are (-2,8) and (-22,8). Therefore,

x1=-2

y1=8

x2=-22

y2=8

Substitute the values into the formula.

m=8-8/-22-2

Solve the numerator. Subtract 8 from 8.

m=0/-22+2

Zero divided by any number is zero, so we automatically know the slope is zero.

m=0

The slope of the line is 0

HALP MEEEE

Function y=x+4 is _ than the function in the table
A. Greater than
B. Less than
C. Equal to

Answers

The answer to your question is c

solve for z −cz+6z=tz+83

Answers

Answer: z=83/c - 7 + t

Step-by-step explanation:

You have 96 grams of a radioactive kind of vanadium. How much will be left after 32 days if it’s half life is 16 days?

Answers

Answer:

24

Step-by-step explanation:

Helppp!!!
37.37 x 7.6

Answers

Answer:

284.012

Step-by-step explanation:

Hope this awnsers your question!

Answer:

284.012

Step-by-step explanation:

In ΔNOP, o = 3.6 cm, ∠N=119° and ∠O=5°. Find the length of n, to the nearest 10th of a centimeter.

Answers

Answer:

36.1

Step-by-step explanation:

Just did it on delta math

can someone help me with this?

Answers

Answer:

X = 25

Step-by-step explanation:

As, 2x + 60° + 4x = 180° (bc they r supplementry)

So, 6x + 30° = 180°

6x = 180° - 30°

6x = 150°

x = 150/6

x = 25

Therefore, answer = 25

what is 10 times smaller than 0.6

Answers

Answer:

0.06

Step-by-step explanation:

The answer is 0.06 because you are moving the number behind the decimal 10 times

2. 3 2/5 ÷ 4/5
HELP PLS I NEED THE ANSWER

Answers

4.25 is DECIMAL FORM

17/4 is exact form

4 1/4 is mixed form

HOPE THIS HELPS :)

Two percents are shown below:
1. 25% of 60
2. 10% of 150
Are these amounts equivalent? Explain why or why not.

Answers

Yes, if you multiply 25 % by 60, the answer is 15.

Multiply 10% by 150, the answer is 15.

PLEASE HELP I don’t k is the answer

Answers

Answer:

B

Step-by-step explanation:

Six students bought exactly enough pens to share equally among themselves. Which of the following could be the number
of pens they bought?

Answers

Answer:

6 12 18 24 30 36 42 48 54 60

Step-by-step explanation:

Answer:

b. 48

i found the answer key lol

8. Evaluate the expression for x = 2
and y = 3.
16x0 + 5x2•y1

Answers

Answer:

The answer is 60.

Step-by-step explanation:

16(2)0 + 5(2)2•(3)1

(16)(2)(0)+(5)(2)(2)(3)(1)

16×2=32×0=0 + 5×2=10×2=20×3=60×1=60

0+60=60

y=x+2 y=-3X

solve system of equations algebraically
​

Answers

Answer:

(x,y) = -1/2 , 3/2

Step-by-step explanation:

Let y = x +2 ----- (1)

y = -3x ------ (2)

Put equal both sides x +2 = -3x

x = -3x -2

x +3x = -2

4x = -2

x = -1/2 Put it in 2nd equation

Y = -3 (-1/2)

y = 3/2

so (x,y) = -1/2 , 3/2

Hope you got it.

Please Mark as Brainliest.

what is slope intercept

Answers

Answer:

Slope Intercept is the equation of a straight line in the form y = mx + b where m is the slope of the line and b is its y-intercept.

Step-by-step explanation:

DOK Nitter Email You might need: Calculator Find the area of a circle with a radius of 8. Either enter an exact answer in terms of or use 3.14 for and enter your answer as units2 ​

Answers

Answer:

about 201.06

Step-by-step explanation:

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