Select all the expressions that are equivalent to 4b

A. b+b+b+b

B. b+4

C. 2b+2b

D. bxbxbxb

Answer:

-343/27

Step-by-step explanation:

Answer:

omar did not make a mistake.

Answer:

21 + 3r

Step-by-step explanation:

(7 + r) 3 =

(7) x 3 + (r x 3) =

21 + 3r

Hope that helps!

Here are some notes i have from some sources i hope these notes will be able to help you achieve the grade you wanted to good luck!

-The bound on error of estimation, B , associated with a confidence interval is (z critical value) ·(standard error of the statistic) . ... Sample Size The sample size required to estimate a population proportion  to within an amount B with 95% confidence is The value of  may be estimated by prior information.

-P-value and margin of error are not same.

-A margin of error tells you how many percentage points your results will differ from the real population value. For example, a 95% confidence interval with a 4 percent margin of error means that your statistic will be within 4 percentage points of the real population value 95% of the time.

-The margin of error determines how reliable the survey is or how reliable the results of the experiment are. ... This is captured in statistics as margin of error. The higher the margin of error, the less likely it is that the results of the survey are true for the whole population.

-Population distribution means the pattern of where people live. World population distribution is uneven. Places which are sparsely populated contain few people. Places which are densely populated contain many people.

These notes are from sources found online not mine If you want the sites just comment and ill give you them!

Answer:

6

Step-by-step explanation:

First x-intercept is multiplicity of two.

Second is just one.

Third is one.

Fourth is two.

2+1+1+2=6

Answer: 12x^2+4

Step-by-step explanation:

Answer:

x= 12

Step-by-step explanation:

180° = (3x - 6) + (8x + 4) + 50°  because all interior angles of a triangle add up to 180°

180° = 11x +48°

11x = 132°

x = 12

Answer:

1.5

Step-by-step explanation:

i might have read this problem wrong since i didnt get a clear understanding because of the wording of this problem but i will do the best i can!

step-by-step explanation:

first step is to make a table! and ill just make one on here so you can get a better understanding on this problem :)

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

| boxes sold (b) | money collected (m) |

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

|    1    |          1.50           |

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

|    2    |          3           |

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

|    3    |          4.50            |

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

|    4    |          6           |

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

|   5    |          7.50           |

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

|   6    |          9           |

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

|   7    |          10.50           |

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

|   8    |          12           |

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

(b * 1.50) = m

the independent variable = boxes sold (b)

the dependent variable = money collected (m)

hope this helps you and please tell me if i did something wrong or if you need extra help understanding this problem! :)

Answer:

9.8  miles

Step-by-step explanation:

14/5= 2.8mph

2.8*3.5= 9.8 miles in 3.5 hours

Answer:

15.1

Step-by-step explanation:

deltamath

9514 1404 393

Answer:

  e ≈ 11.0

Step-by-step explanation:

The law of cosines tells you ...

  e² = d² +f² -2df·cos(E)

  e² = 196 +81 -252cos(52°) ≈ 121.853

  e ≈ √121.853 ≈ 11.04

Answer:

[tex](a)[/tex]  [tex]P(M\ or\ P\ or\ C) = 1.307[/tex]

(b) See Explanation

Step-by-step explanation:

Given

[tex]P = 312[/tex] ---- Professionals,

[tex]M = 470[/tex] ----- Married persons,

[tex]C = 525[/tex] ---- College graduates,

[tex]PCG = 42[/tex]  ----- Professional college graduates,

[tex]MCG = 147[/tex] ----- Married college graduates,

[tex]MP = 86[/tex]  ---- Married professionals,

[tex]MPCG = 25[/tex] ---- Married professional college graduates

[tex]Total =1000[/tex]

Solving (a): P(M or P or C)

This is calculated as:

[tex]P(M\ or\ P\ or\ C) = P(M) + P(P) + P(C)[/tex]

[tex]P(M\ or\ P\ or\ C) = \frac{n(M) + n(P) + n(C)}{Total}[/tex]

[tex]P(M\ or\ P\ or\ C) = \frac{470 + 525 + 312}{1000}[/tex]

[tex]P(M\ or\ P\ or\ C) = \frac{1307}{1000}[/tex]

[tex]P(M\ or\ P\ or\ C) = 1.307[/tex]

(b) In probabilities, the probability of an event or collection of events must not exceed 1 and must not go below 0.

In (a) above, the calculated probability exceeds 1.

Because of this single reason, the collected data is incorrect

Answer:

Hiya!!

12m * 8m = 96m

Step-by-step explanation:

Answer:  294

7x7=49

49x6=294

Answer:

B

Step-by-step explanation:

Answer:

NOT found in obtuse triangles

Step-by-step explanation:

you only talk about hypotenuse, adjacent, and opposite in right triangle

9514 1404 393

Answer:

  6w²v⁶

Step-by-step explanation:

Find the matching factors in each expression.

1st expression factors

  2·3^2·w^2·x^3·v^7

2nd expression factors

  2^3·3·w^8·v^6

Factors found in both expressions:

  2, 3, w, v

The GCF is the product of these to their lowest powers:

  2^1·3^1·w^2·v^6

The GCF is 6w²v⁶.

Answer:

6x^2+17x+9

Step-by-step explanation:

you have to subtract the area of the white rectangle from the area of the entire rectangle

to find the area of the inner rectangle do (2x-3)*(x+1)=2x^2-3x+2x-3=2x^2-x-3

to find the area of the entire rectangle do (4x+6)*(2x+1)=8x^2+12x+4x+6=8x^2+16x+6

(8x^2+16x+6)-(2x^2-x-3)=8x^2+16x+6-2x^2+x+3=6x^2+17x+9

Answer:

It landed at a height of 14 feet

Step-by-step explanation:

Given

[tex]y = -\frac{1}{8}x^2 +4x[/tex] --- Path of a t-shirt

[tex]3y = 2x - 14[/tex] --- height of bleachers

Required

Height when t-shirts land in bleachers

[tex]3y = 2x - 14[/tex]

Make y the subject

[tex]y = \frac{2}{3}x - \frac{14}{3}[/tex]

Substitute [tex]y = \frac{2}{3}x - \frac{14}{3}[/tex] in  [tex]y = -\frac{1}{8}x^2 +4x[/tex]

[tex]\frac{2}{3}x - \frac{14}{3} = -\frac{1}{8}x^2 +4x[/tex]

Multiply through by 24

[tex]16x- 112 = -3x^2 +96x[/tex]

Express as:

[tex]3x^2 + 16x -96x- 112 = 0[/tex]

[tex]3x^2 -80x- 112 = 0[/tex]

Using a calculator:

[tex]x = 28[/tex] or [tex]x = -\frac{4}{3}[/tex]

x can not be negative:

So:

[tex]x = 28[/tex]

Substitute [tex]x = 28[/tex] in [tex]y = -\frac{1}{8}x^2 +4x[/tex] to calculate the height it landed

[tex]y = -\frac{1}{8} * 28^2 + 4 * 28[/tex]

[tex]y = 14[/tex]

Answer:

50

Step-by-step explanation:

Answer:

Step-by-step explanation:

sin(14.629°) = cos(90°-14.629°) = cos(75.371°)

Answer:

It depends on the definition of "algebraic expression", and especially the meaning of "algebraic" you take to use in your context. If you talk from a high-school perspective, then yes, x+y−π is an algebraic expression, because... well, it looks like algebra and has algebraic-looking characters.

Step-by-step explanation:

Answer:

D. x^2 +14x + 40

Step-by-step explanation:

(x+4)(x+10)

x^2+10x+4x+40

x^2+14x+40

Answer:

d) x^2+14x+40

Step-by-step explanation:

You gotta multiply (x + 4)(x + 10)

Answer:

1.70

8.40

130.200

7.120

6.60

142.30

Step-by-step explanation:

The decimal numeral system is the standard system for denoting integer and non-integer numbers.

Decimal is a point which denotes integer and non-integer numbers (mah own answer)

Answer:

78.5398

Step-by-step explanation:

Area of a circle:

a=[tex]\pi[/tex]r²

Radius is 10.

a=[tex]\pi[/tex]10²

a=[tex]\pi[/tex]100

a=314.15926

90° is one quarter of the circle, so multiply it by 0.25.

314.15926x0.25=78.5398

I don't know how many places the directions want it rounded to.  If it said to use 3.14 for pi, the answer would just be 78.5.

Answer: No, the answer is 29, this is false.

Step-by-step explanation: 63-x=34

subtract 63 from both sides

34-63= -29

-x=-29

divide both sides by the negative and you get 29

plug in 29 for x, 63-29=34