Investment firm claims that the mean increase in price per share companies invest in is $1.95 per share every year and national sample of 100 company shows that the mean increase in price per share is $1.82 per year the standard deviation of share price is nationally is $.30 what is the margin of error

-2x-3=-7

add 3 to both sides

-2x=-4

isolate x by diving both sides by -2

Answer: x=2

Hope that helps!

Please mark brainliest

Answer:

x = 2

Step-by-step explanation:

The whole goal when solving problems like this is to get the x alone. So the first step would be to get the -3 over to the other side. To do this, you would add 3 to each side of the equation, so that the -3 on the left side cancels out.

-2x - 3 = -7

+3          +3

-2x = -4

The next thing you need to do is divide each side by -2. You would do this because right now, the equation reads "negative two times x equals negative four". When you divide a multiplication problem, it cancels out, so you are left with just the x.

-2x = -4

÷ -2    ÷ -2

x = 2

You now have the value of x.

Please let me know if you need any more help. I hope this explanation helps you understand a bit better. Have a great day! :)

Respuesta:

Botella, B = 0.5

Jarra, C = 2,5

Explicación paso a paso:

Dejar :

Garrafa = C

Botella = B

C = 5B - - - - 1)

3 garrafas más 7 botellas = 11 litros

3C + 7B = 11

C = 5B

3 (5B) + 7B = 11

15B + 7B = 11

22B = 11

B = 11/22

B = 1/2 = 0,5

Sustituyendo B = 0.5 en 1)

C = 5B

C = 5 (0,5)

C = 2,5

Answer:

63.00

Step-by-step explanation:

Increasing a price by 50% is like adding half of the original price to get an updated price. 42 times 50% or divided by 2 (Since it produces the same result) is 21 and 21 plus 42 is 63. 63 dollars is the correct answer which means the correct option is option A.

Answer: 84

Step-by-step explanation: do 42 dived by 50% gets you 84

Answer:

64

Step-by-step explanation:

Answer:

on the red ? is 32 and on the blue ?is16

Answer:

Yes in a mathematical way I was correct with the answer I first displayed here but my answers weren't to your satisfaction so If I may....

Step-by-step explanation:

heres a graph

Answer:

the answer is 8 hope it helped <3

Step-by-step explanation:

Answer: 8,

I apologize if I'm wrong. Good luck!

Step-by-step explanation:

First, you need to do parenthesis, 1-0.80=0.2

Then, you do exponents, 0.2^2=0.04

Last, you do 200x0.04=8

Answer:

I think it's C is true but make sure

Answer:

Step-by-step explanation:

so if the cubic length is now shorter you have to make the object bigger. So now the rectangle would have a length of 6 squares and a height of 10 squares

Answer:

3 by 3

Step-by-step explanation:

make it go 3 squares to the right and 3 squares upwards for a total or 9 squares.

Answer:

x = 5

Step-by-step explanation:

18 + 9 = 27

27/9 = 3

3x = x + 10

2x = 10

x = 5

Answer:

Option D is correct.

Value of x is, 10 units.

Step-by-step explanation:

Given that:  

From the given figure, we have;

AP = 3 units , PB = 6 units , QC = 20 units and AQ = x units.

then, by triangle proportionality theorem;

Substitute the given values, to find the value of x;

By cross multiply we have;

Divide both sides by 6 we get;

10 = x

Therefore, the value of x is, 10 units

Answer:

x = 9

Step-by-step explanation:

5x + 5x - 90 = 0

5x + 5x = 90 + 0

5x + 5x = 90

10x = 90

x = 9

Hope that helps!

-Sabrina

Answer:

Radius R = 9 ft

Step-by-step explanation:

Given:

Volume of sphere =  972π ft³

Find:

Radius R

Computation:

Volume of sphere = (4/3)πr³

972π = (4/3)πr³

729 = r³

Radius R = 9 ft

Answer:

its 14

Step-by-step explanation:

Answer:17.8 feet

Step-by-step explanation:

angle B=90

now

A+B+C=180

90+A+C=180

A+C=90

Answer:

Step-by-step explanation:

the 2nd one

that's easy, the last choice

a=1/2b*h

Answer:

4%

Step-by-step explanation:

commission rate = (amount earned on sales / total cost of items sold) x 100

[tex]\frac{378}{9000}[/tex] × 100 = 4.2%

To convert to the nearest whole number, look at the first number after the decimal,

two is less than 5, thus we would add zero to 4.

4.2% becomes 4%

Answer:

6

Step-by-step explanation:

a^2+b^2=c^2

(3√(2))^2=18

(3√(2))^2+(3√(2))^2=36

√36=6

hypto=6

Answer:

188,000

Step-by-step explanation:

Answer:

x= 1 ±√21/3

x= 2.52753

x= - 0.527525

Step-by-step explanation:

-(-6) ±√-6² - 4 (3) (-4) / 2(3)

6±√36 -(-48) / 6

6±√84/6

6±2√21/6

6/6 ±2√21/6

1±√21/3

1+ √21/3 = 2.52753

1-√21/3= - 0.527525

Step-by-step explanation:

[tex]3x ^{2} - 6x - 4 = 0[/tex]

[tex]by \: quadratic \: formula[/tex]

[tex](-b±√(b²-4ac))/(2a) [/tex]

[tex] - ( - 6)±√( - 6²-4(3)( - 4) /(2 \times 3) [/tex]

[tex](6±√(36 + 48)/(6) [/tex]

[tex](6±√(84)/(6) [/tex]

[tex](6±2√21)/6[/tex]

[tex]2(3±√21)/6 [/tex]

[tex]3±√21/3[/tex]

[tex]let \: \alpha \: and \: \beta \: be \: two \: roots \: .[/tex]

[tex]3 + \sqrt{21} /3[/tex]

[tex]3 + 4.58/3[/tex]

[tex]7.48/3[/tex]

[tex]2.52[/tex]

[tex]and \: second \: root \: = 3 - \sqrt{21} /3[/tex]

[tex]3 - 4.58/3[/tex]

[tex] - 1.58/3[/tex]

[tex] - 0.52[/tex]

[tex]so \ \: alpha = 2.52 \: and \: \beta = - 0.52[/tex]

Answer:

6s2

= 6(2)2

= 12 × 12

= 144

: The value of the expression is equal to 144

Answer:

b=60 c=70 a=50 d=70 e=60 f=50

Step-by-step explanation:

Answer:

I dont really know but I can tell you for sure its one of the first 2

Step-by-step explanation:

Answer:

The answer is: x-y-10=0

Answer:

60°

Step-by-step explanation:

each interior angle of a regular hexagon measures 120° (720° divided by 6 sides)

therefore, each exterior angle measures 180-120 = 60°

JH = mid-segment of triangle KLM.

ML = 22

(1/2)(ML) = 11

JH = (1/2)(ML) = x

So, x = 11.

Answer:

p = 6

Step-by-step explanation:

[tex](x^{2})(x^{2})^{2}[/tex]

[tex](x^{2}) ^{2}[/tex] is [tex]x^{2*2}[/tex]

The equation is now [tex](x^{2} )(x^{4})[/tex]

add the two exponents together 2 + 4

the final answer is [tex]x^{6}[/tex]