Will the answer to the following expression be Positive or Negative?

(-3)(2)(15) =?

a
Positive
b
Negative

Answer:

5x + 10 y = 70

Step-by-step explanation:

Answer:

49 degrees

Step-by-step explanation: You are basically counting from 0 to 49

Answer:

approximately 7 CDs for her bonus

Answer:

Toris can buy about 7 CDs

Step-by-step explanation:

63 Divided by 9 = 7

Answer:

a) Range = 1.39

b) the sample variance is 0.1597

c) the sample standard deviation is 0.3996

Step-by-step explanation:

Given the data in the question;

a) Find the range.

To determine the range, we simple subtract the smallest value from the largest value. i.e

Range = largest value - smallest value

from data set; our smallest is 0.53 while our largest value is 1.92

so

Range = 1.92 - 0.53 = 1.39

b) Find the sample variance.

To determine our variance, we use the following formula;

∑([tex]X_{i}[/tex] - [tex]x_{bar}[/tex])² / n - 1 = [ ∑[tex]X_{i}[/tex]²/n-1 ] - [ [tex]\frac{n}{n-1}[/tex]([tex]x_{bar}[/tex])²]

where [tex]x_{bar}[/tex] =  ∑[tex]X_{i}[/tex]/n

n is sample size = 14 so lets calculate ∑[tex]X_{i}[/tex]

∑[tex]X_{i}[/tex] = 0.99 + 1.92 + 1.23 + 0.85 + 0.65 + 0.53 + 1.41  + 1.12 + 0.63 + 0.67 + 0.69 + 0.60 + 0.60 + 0.66

∑[tex]X_{i}[/tex]  =  12.55    

∑[tex]X_{i}[/tex]² = 0.99² + 1.92² + 1.23² + 0.85² + 0.65² + 0.53² + 1.41²  + 1.12² + 0.63² + 0.67² + 0.69² + 0.60² + 0.60² + 0.66²

∑[tex]X_{i}[/tex]² = 13.3253

so

our  [tex]x_{bar}[/tex] =  ∑[tex]X_{i}[/tex]/n = 12.55 / 14 = 0.8964

so our Variance  will be;

= [ ∑[tex]X_{i}[/tex]²/n-1 ] - [ [tex]\frac{n}{n-1}[/tex]([tex]x_{bar}[/tex])²]

= [ 13.3253 / 14-1 ] - [ [tex]\frac{14}{14-1}[/tex] (0.8964)²]

= 1.025 - 0.8653

= 0.1597

Therefore, the sample variance is 0.1597

c) Find the sample standard deviation.

we know that standard deviation is the square root of variance;

standard deviation = √Variance

standard deviation = √0.1597

standard deviation = 0.3996

Therefore, the sample standard deviation is 0.3996

Answer:

D=4

C=12.56

Step-by-step explanation:

D=2r

d=2×2

D=4

C=pi ×D

C=3.14×4

C=12.56

Answer:

(1, -1)

Step-by-step explanation:

If you end up at (2, -1), after moving 1 unit to the right, that implies that you started at (1, -1).  Note that 1 + 1 = 2.

Answer:

(1,-1)

Step-by-step explanation:

Because as it said go across 1 to the right , just go back 1 to the left so you are at were you started

Answer:

2.1392938e+25Step-by-step explanation: you just times it so u get this answer

Answer:

2.13929384 x10^25

Step-by-step explanation:

use a calculator

Answer:

The area of the square ABCD is 25 square units

Step-by-step explanation:

The square ABCD has three of its vertices at A(0,3), B(4,0), and C(7,4). The fourth vertex has been also plotted in the image attached below.

The area of the square is

[tex]A = a^2[/tex]

Where a is the length of any of the square's sides. We only have to find the distance from any two consecutive vertices, for example, A(0,3), B(4,0):

[tex]a=\sqrt{(4-0)^2+(0-3)^2}[/tex]

[tex]a=\sqrt{16+9}=\sqrt{25}=5[/tex]

a = 5

Calculating the distance between any other pair of consecutive vertices would yield the same result. The area is now calculated:

[tex]A = 5^2 = 25[/tex]

The area of the square ABCD is 25 square units

Answer:

c = -20

Step-by-step explanation:

Isolate the variable, c. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation, and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

~

First, subtract 48 from both sides of the equation:

-2c + 48 = 88

-2c + 48 (-48) = 88 (-48)

-2c = 88 - 48

-2c = 40

Next, divide -2 from both sides of the equation:

(-2c)/-2 = (40)/-2

c = 40/(-2) = -20

c = -20 is your answer.

~

Answer: 24

Step-by-step explanation:

3x + 9 = 5x - 3

9 = 2x - 3

12 = 2x

x = 6

6 * 4  =24

4x = 24

Answer:D

Step-by-step explanation: just trust me on this one i have a 103% in 9th grade math

Answer:

C. Each calculator costs $80.

Step-by-step explanation:

Linear equation:

Has the following format:

[tex]y = mx + b[/tex]

In which m is the slope, and the meaning is how much the output changes when the input changes by 1 unit.

In this question:

Amount remaining after buying x calculators:

[tex]y = 1000 - 80x[/tex]

So the slope of -80 means that each calculator costs $80, since after buying a calculator, 80 is retired from the amount.

The answer is given by option C.

Answer:

50.3 square units

Step-by-step explanation:

area of rectangle: 11 x twice the radius

radius = 2

A(rect): = 11(4) = 44 sq units

A (semi-circle) = (π·r²) / 2

A = 4π / 2 = 2π = 6.28 sq units

44.0 + 6.28 = 50.28

Answer:

can we see the picture?

Answer:

3x^2-1

Step-by-step explanation:

Answer:

f(x) = 3x – 1 and g(x) = x²

Putting the value of g(x) in f(x), we get

(fog)(x)= f{g(x)}= f(x²) = (3x²-1)

Answer:

28 divided by 7 is 4

Step-by-step explanation:

example: There 28 cupcakes if there are 7 people how many will each get? Ok so you have 28 groups of 7 and then you'll get your answer which is 4.

The mathematical expression for the phrase 28 divided by 7 is 28 ÷ 7 and the value of the expression is 4.

It is the basic arithmetic operation, in which you are separating the number into some parts. One of the fundamental mathematical operations is division, which involves breaking a bigger number into smaller groups with the same number of components.

Given:

28 divided by 7,

The mathematical expression for the above statement can be written as shown below,

28 ÷ 7

Calculate the value of the expression as shown below,

28 ÷ 7 = 4

Thus, the expression is 28 ÷ 7.

To know more about division:

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Answer:

The value of the test statistic is t = 2.19.

Step-by-step explanation:

Central Limit Theorem

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

Our test statistic is:

[tex]t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

In which X is the sample mean, [tex]\mu[/tex] is the expected mean, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.

Sample of 1300 voters:

This means that [tex]n = 1300[/tex]

Found that 45% of the residents favored construction.

This means that [tex]X = 0.45[/tex]

A political strategist wants to test the claim that the percentage of residents who favor construction is more than 42%.

This means that [tex]\mu = 0.42[/tex], and by the Central Limit Theorem:

[tex]\frac{\sigma}{\sqrt{n}} = s = \sqrt{\frac{0.42*0.58}{1300}} = 0.0137[/tex]

So, the test statistic is:

[tex]t = \frac{X - \mu}{s}[/tex]

[tex]t = \frac{0.45 - 0.42}{0.0137}[/tex]

[tex]t = 2.19[/tex]

The value of the test statistic is t = 2.19.

Answer:

It is 21

Step-by-step explanation:

Answer:

15y^2-45

Step-by-step explanation:

5y^2+10y^2-45 = 15y^2-45

Answer:

385

Step-by-step explanation:

Given that:

Margin of Error (MOE) = 5% = 0.05

Zcritical, 95% = Z(1-α/2) = Z0.025 = 1.96

MOE = Zcritical * (√p(1-p))/n)

p is taken as 0.5 when not stated ;

5 = 1.96 * sqrt[(0.5 * 0.5) / n]

5 = 1.96 * sqrt(0.25/n)

Square both sides

(0.05/ 1.96)² = 0.25/n

0.0006507 = 0.25/n

0.0006507 * n = 0.25

n = 0.25 / 0.0006507

n = 384.20162

Sample size = 385

Answer:

x=6

Step-by-step explanation:

32-21 = 11

28-11 = 17

17-11 = 6

x=6

Answer:

this could be wrong but for this question i put 10 as the first blank and for the second blank i put - and then for the third i put 5

Step-by-step explanation:

Im not sure on this. I have the same fsq and we haven't learned this yet but this is what I put because the sequence is subtracting 5  

Answer:

Step-by-step explanation:

the answers is 75,000,000

Answer:

112

Step-by-step explanation:

A = 2 (wl+hl+hw)

A = 2 (4 x 5 + 4 x 5 + 4 x 4)

A = 2 (20 + 20 + 16)

A = 2 x 56

A = 112

Answer:

82, 84

Step-by-step explanation:

Answer:

so what is the question?

Answer:

The first graph.

Step-by-step explanation:

Just took the test, got it right. Every increase of ten pounds is an increase in 50 mg of treatment, and it should start at 0.

The best option is  first graph. The graph clearly shows the relationship between a dog's weight and the antibiotic dosage used to treat the dog.

A graph is "diagrammatic or pictorial representation of the collection of data in organized manner."

According to the question,

A veterinarian uses a specific formula to calculate the dosage of an antibiotic given to dogs with bacterial infections.  For each 10 pounds of a dog's weight, she treats the dog with 50mg of antibiotic per dose.

The horizontal line in the graph represents the dog's weight in (l b) and the vertical line in the graph represents the amount of dosage is used for treatment for bacterial infection of the dog.

Every increase of ten pounds is an increase in 50 mg dosage of treatment, and it should start at 0 in the graph.

Hence, the best option is  first graph. The graph clearly shows the relationship between a dog's weight and the antibiotic dosage used to treat the dog.

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Answer:

1. The data that these cards allow stores to gather are customer data.

2. The stores want the data to enable them understand the customer, their buying goals, customer preferences, and spending patterns.  These data enable the stores to stock their stores to meet customers needs.  They also use the data to understand the individual customers credit history and buying habits.

Step-by-step explanation:

Customer data are essential assets which businesses use to understand their customers.  They obtain the data through firsthand responses from customers, through investigation, or by asking direct questions.  Many organizations use loyalty cards to help them gather customer data, such as individual preferences and spending patterns.