Plz help me I need this

Answer:

2

Step-by-step explanation:

ifk lol hhhhhhhuhi. hhhh

Answer:

2 1/2 or 2 and a half

Step-by-step explanation:

if you divide it it will come out to be that (I hope its right but i don't know if it is

Answer to this question: "A kangaroo hops 2 kilometers in 3 minutes at this rate how far does the kangaroo travel in 2 minutes"

2.50

Answer:

1. fraction=51/94

decimal= 51/94 a decimal is approximate: 0.54255 (Rounded to fifth decimal place)

2. fraction= 2/8

decimal= 2/8 as a decimal is 0.25.

3. fraction= 75/5

decimal= 75/5 as a decimal is 15.

Answer:

sorry i could only answer the first one hope it helps as a decimal 0.54255

Step-by-step explanation:

aswdqr4f 4crd

Answer:

$6.76

Step-by-step explanation:

Answer:

[tex]\frac{2/3}{1}[/tex] and [tex]\frac{3}{1}[/tex]

Step-by-step explanation:

Options

[tex]\frac{1}{1/3}[/tex]     [tex]\frac{2/3}{1}[/tex]     [tex]\frac{2}{3}[/tex]     [tex]\frac{3}{1}[/tex]     [tex]\frac{1}{9}[/tex]

Required

Select the unit rates

Unit rate involve two items where the first item being measured can be any positive number, but the second item must be measured in units (i.e. 1)

For clarity:

If [tex]\frac{a}{b}[/tex] represents unit rate, then [tex]b = 1[/tex]

Having said that:

Only [tex]\frac{2/3}{1}[/tex] and [tex]\frac{3}{1}[/tex] satisfy the condition of unit rates; others are not because they have a denominator other than 1

Answer:

option 1

Step-by-step explanation:

because i am confident

Answer:

no

Step-by-step explanation:

8a+8b are not equivalent 6a+5b

Answer:

C

Step-by-step explanation:

Sorry if im wrong i tried my best

Answer:

450.012 - 57.876 = 392.136

392.136 rounds to 392.14,so your answer would be D

Answer:

16/20

Step-by-step explanation:

becuase there is 20 counters and 16 of them are green

so if he picks one of 20 there are 16 green ones he could pick which is is a higher probabilty then the other colors.

Answer:

 1.25

Step-by-step explanation:

You divide the number of outcomes by the number of possible outcomes. So, 20/16 which equals 1.25.

Answer:

It is 49

Step-by-step explanation:

multiply 12.25 by 4  since 1 inch is 12.25 and 4 inches times 12.25 is 49

Answer: F is 11m.

Step-by-step explanation: Because H,I,G are all increasing their numbers like plus 3, plus 2, and the last one has to be plus 1.

Answer:

D=17

Step-by-step explanation:

D+23=40

D+23-23=40-23

D=17

Answer:

Step-by-step explanation:

i would love to help but there is no line

Answer:

5.60 ganeyryjfj3ym5uhwrbeyny3nte y

Using the decay constant on the exponential function, the mass of the sample that will be left in 2013 is 35g

An exponential function is a function that can be expressed in the form     f(x) = b^x, where b is a positive real number and x is a real number. The graph of an exponential function is a curve that increases or decreases rapidly as x increases or decreases.

here, we have,

In the exponential decay, the decay function can be given as;

y = ae⁻ⁿˣ

a = initial mass of sample

n = disintegration constant

x = time

The disintegration constant is also know as the rate of decay and we can calculate it as;

260 = 470e⁻ⁿ⁽³⁾

n = 0.197

n = 0.2

The disintegration constant is 0.2

The amount left in 2013 will be;

y = 470e⁻⁽⁰.²⁾⁽¹³⁾

y = 34.90

The mass in 2013 is 35g

Learn more on exponential function here;

brainly.com/question/2456547

#SPJ3

complete question:

A sample of a radioactive isotope had an initial mass of 470 mg in the year 2000 and decays exponentially over time. A measurement in the year 2003 found that the sample's mass had decayed to 260 mg. What would be the expected mass of the sample in the year 2013, to the nearest whole number?

Answer:

See the proof below

Step-by-step explanation:

Given the following coordinates

P(2, −1)

Midpoint of PQ M(3, 0)

We can get the coordinate point Q using the midpoint formula;

M(X,Y) = (x1+x2/2, y1+y2/2)

X = x1+x2/2

3 = 2+x2/2

6 = 2+x2

x2 = 6-2

x2 = 4

Y = y1+y2/2

0 = -1+y2/2

0 = -1 + y2

y2 = 0+1

y2 = 1

Hence the coordinate of Q is (4, 1)

Next is to get the coordinate of R

Given the midpoint of QR to be N(5, 3)

(5,3) = (4+x2/2, 1+y2/2)

5 = 4+x2/2

10 = 4+x2

x2 = 10-4

x2 = 6

1+y2/2 = 3

1+y2 = 6

y2 = 6-1

y2 = 5

Hence the coordinate of R is (6,5)

Given the coordinates M(3, 0) and N(5, 3)

Slope is expressed as:

m = y2-y1/x2-x1

m = 3-0/5-3

m = 3/2

Slope of MN = 3/2

Get the slope of PR

Given the coordinates P(2, −1) and R (6,5)

Slope of PR = 5-(-1)/6-2

Slope of PR = 5+1/4

Slope of PR = 6/4 = 3/2

Since the slope of MN is equal to that of PR, hence MN is parallel to PR i.e MN || PR

To show that MN = 1/2PR, we will have to take the distance between M and N and also P and R first as shown:

For MN with coordinates  M(3, 0) and N(5, 3)

MN = √(x2-x1)²+(y2-y1)²

MN = √(5-3)²+(3-0)²

MN = √2²+3²

MN = √13

Get the length of PR where P(2, −1) and R (6,5)

PR = √(6-2)²+(5+1)²

PR = √4²+6²

PR = √16+36

PR = √52

PR = √4*13

PR = √4*√13

PR = 2√13

Since MN = √13

PR = 2MN

Divide both sides by 2

PR/2 = 2MN/2

PR/2 = MN

Hence MN = 1/2 PR (Proved!)

Answer:

40% of the bottle of apple juice is water

75% of the bottle of orange juice is water

Step-by-step explanation:

this is to find the percentage of apple juice that is water

(32 ÷ 80) × 100

you have to multiply by 100 because you are looking for the percentage

32÷ 80 is 2/5

2/5 × 100 is 40%

this is to find the percent of orange juice that is water

(48÷64) × 100

48 ÷ 64 is 3/4

3/4 × 100 is 75%

Answer:

0.41 and 0.5 are both greater than .40 and less than .65

Step-by-step explanation:

9514 1404 393

Answer:

  120.8%

Step-by-step explanation:

Maybe you want to find $42,900 as a percentage of $35,500.

That is ...

  42900/35500 × 100% = 120.8%

__

Comment on the question

The question is easier to read if you don't shuffle the phrases. Copying and pasting often requires a check and edit step afterward.

Answer:

-6x-9=  1

2x^5-x^4+2x^3-6x^2+2x+4= 5

-4x^3-10^2+7x+5= 3

Step-by-step explanation:

i just did and everything was right

Answer: The system consists of parallel lines

Step-by-step explanation:

Given system of lines :

[tex]y=\dfrac13x-4[/tex]

[tex]3y-x=-7[/tex]

Substitute [tex]y=\dfrac13x-4[/tex] in [tex]3y-x=-7[/tex],  we get

[tex]3(\dfrac13x-4)-x=-7\\\\\Rightarrow\ x-12-x=-7\\\\\Rightarrow\ -12=-7[/tex] , which is not true.

That means , system has no solution.

i.e. they are representing parallel lines. [Parallel lines do not intersect and hence they do not have solution.]

Answer:

z(s) =  - 2,15 We accept H₀

Step-by-step explanation:

Assume Normal Distribution.

Sample size                  n = 290

Sample mean               μ = 7,6

Sample standard deviation   s = 0,8

Level of significance  0,02   ( CI = 98 % )

population mean  μ₀ = 7,5

α = 0,02       the valve could fail under and above the spec value ( 7,6 ) therefore we must develop a two-tail test

α/2  =  0,01

Hypothesis Test

Null hypothesis                                      H₀       μ   =  μ₀

Alternative Hypothesis                         Hₐ        μ   ≠  μ₀

for  α  =  0,01    z(c)  = - 2,3

To calculate  z(s)

z(s)  =  ( μ   -  μ₀ ) / s/√n

z(s)  =  ( 7,5 - 7,6 ) /0,8/√290

z(s) = - 0,1 * 17 /0,8

z(s) =  - 1,7 / 0,8

z(s) =  - 2,15

Comparing   z(s)  and  z(c)

- 2, 15  < - 2,3

|z(s)|  <  | z(c)|

Then z(s) is in the acceptance region. We don´t have evidence to reject H₀

Answer:

15

Step-by-step explanation:

3 2/4+ 2 3/4+ 2 3/4+ 2 1/4+ 1 1/4+ 1

first add the whole numbers so 3+2+2+2+1+2=12

then we are left with the fractions. 11/4 divides into 2 with a remainder of three so we add it to the top.

From here we have 2/4+3/4+3/4+1/4+3/4

add them together and we get 12/4=3. Then add back our whole numbes to get 12+3=15

Answer:

Yes, it is a function.

Step-by-step explanation:

As long as there are no more than one point in a single x-value, it is considered a function.