please help me if the answer is right i will give u brainlyiest
thanks! <3​

Answer:

15 nickels and 13 dimes

Step-by-step explanation:

5n + 10d = 205 cents

n + d = 28

n = 28-d

5(28-d) +10d = 205

140 -5d + 10d = 205

5d = 65

d = 13

n = 28-d = 28-13 = 15

5n = 5(15) = 75

10d = 10(13) = 130

75+130=205

Answer:

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 181 feet, and ball 2 is dropped from a height of 238 feet. Write a function for the height of each ball.

h1(t) = -16t^2 + 181

h2(t) = -16t^2 + 238

When does ball 1 reach the ground? Round to the nearest hundredth. seconds

Solve: -16t^2+181 = 0

-16t^2 = -181

t^2 = 11.3125

t = 3.3634 seconds

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

When does ball 2 reach the ground? Round to the nearest hundredth. seconds

Answer:

3,132,000,000

Step-by-step explanation:

Answer:

3132000000 joules

Step-by-step explanation:

Answer:

They bought 40 shoes and 120 boots.

Step-by-step explanation:

So from the question itself we can make the following equation.

Let "x" be the number of shoes they bought, then...

20(x) + 60(3x) = 8000

20x + 180x = 8000

200x = 8000

x = 8000 / 200

x = 40

From here we know that..

# of shoes they bought = x = 40

# of boots they bough = 3x = (3)(40) = 120

Answer:

22110 employees.

Step-by-step explanation:

33500 decrease 34% =

33500 × (1 - 34%) = 33500 × (1 - 0.34) = 22110

Answer:

The company had 22,110 employees a year ago.

Step-by-step explanation:

34% of 33,500 is 11,390

33,500 - 11,390 = 22,110

Answer:

x = 9

Step-by-step explanation:

9 - 1 = 8

Answer:

x = 9

Step-by-step explanation:

Add 1 to each side:

x - 1 = 8

x = 9

Answer:

6

Step-by-step explanation:

I would say 6 because that is a square and all sides on a square are equal.

Answer:

6

Step-by-step explanation:

All the sides of a rhombus are the same. Therefore, if you want to find AD its the same as AB which is 6

Answer:

1/16

Step-by-step explanation:

For 1/4 you multiply the four with the four friends. And you'll get 4x4. You multiply it and get 16. Same as you for it with 1/2. 4x1/2=? Try it out! Hope this helps!

Answer:

40

Step-by-step explanation:

Answer: 1.Remove any grouping symbol such as brackets and parentheses by multiplying factors.

2.Use the exponent rule to remove grouping if the terms are containing exponents.

3.Combine the like terms by addition or subtraction.

4. Combine the constants

Step-by-step explanation:

[tex]8(5w+7) + 9 ( 4w- 7)[/tex]

The first thing we do is distribute

[tex]8(5w+7)& 9(4w-7)[/tex]

We distribute what is outside the parenthesis to everything that is inside the parenthesis

so for 8(5w+7) we do [tex]8x5w = 40w[/tex] and [tex]8x7 = 56[/tex]

so for 9  So  9(4w−7) turns into 36w+63

so now we have 40w+56+36w+−63

now combine like terms

(40w+36w)+(56+−63)=?

Answer:

c. Matched-Pair Design

Step-by-step explanation:

The experimental research study showcased above exhibits two different treatments groups ; the new cholesterol lowering drug and the placebo. The allocation of observations or subjects into groups was based on pair selection which is based on whether subjects picked an even or odd number. Subjects who picked the odd are moved to the treatment group of the new drug while those who picked an even number are referred to the placebo treatment group. This type of research design which involves two pairs of treatment and allotment pattern is called a matched pair research design

Answer:

Completely Randomized Design

Step-by-step explanation:

Rationale: When all patients aer assigned treatment or control randomly without considering other factors, this is called a cmpletely randomized design.

a. vhysyfjgjjchddyyf if if hjd

I would say 50%.

Answer:

The work done is 3645.6 J or 3.6 kJ

Step-by-step explanation:

M1 = (0.5 kg/m)(12 - x m) = (6 - 0.5x) kg

At the height of x meters (0<=x<=12), the mass of the rope is,

M2 = (36kg/12m)(12 - x m) = (36 - 3x m) kg

At the height of x meters (0<=x<=12), the mass of the water is,

M3 = 10 kg

The mass of the bucket is 10 kg

Then, Total mass M is,

M = M1 + M2 + M3 = (6 - 0.5x) + (36 - 3x) + 10 = (52 - 3.5x) kg

From Force F = mass m * acceleration due to gravity g

Force = mass x gravity

F = 9.8(52 - 3.5x) Newtons

To get the work done W,

Follow the attached file,

The work done is 3645.6 J or 3.6 kJ

Answer:

A: The missing number is 11

Step-by-step explanation:

Answer:

ccccccc.

Step-by-step explanation:

c.cccccccc.ccccccccccccccccccccc

Answer:

4W=25

providing the distances from the hanger wire to the weights are equal.

Step-by-step explanation:

Answer:

D. 120 square feet

Step-by-step explanation:

12×10=120

120 square feet

Answer:

D) 120 square ft

Step-by-step explanation:

If he wants to know the area you just multiply 10 by 12 which is 120

Answer:

Step-by-step explanation:

the expression is 64+64*(0.015)

64 is the container and 64*0.015 is the margin of error

Answer: 1014.2

Step-by-step explanation: you look to the right of 1 and if it is 5 or greater you round up. If it is 4 or less you keep it the same number as it is.

The length of diagonal BD from the parallelogram ABCD is 10.

The midpoint of diagonals BD and AC is E. Hence, the point of bisection is marked E.

BE = DE (The diagonals of a parallelogram bisect each other)

From the diagram given :

BE = 5

DE = BE = 5

Length of BD = BE + DE

Length of BD = (5 + 5) = 10

Therefore, the length of Diagonal BD is 10.

Learn more : https://brainly.com/question/11220936

Answer;

13 weeks

Step-by-step explanation:

If she gets 12$ everyday you need to divide 150 by 12 which makes 12.5 if you say 12 weeks it makes below 150 and 12.5 is not a week so 13 weeks

Answer:

16+8g

Step-by-step explanation:

Just multiple everything by 8

Hope this helps (:

Answer:

8g+16

Step-by-step explanation:

I guess it can be kind of confusing when the number outside of the parentheses is on the right side of the equation? I don't know lol, but the same rules apply.

If it helps, rewrite it as: (2+g)8 --> 8(2+g)

Now multiply: (8*2)+(8*g)

Simplify: 16+8g or 8g+16 (however you want to write it)

Answer:

i 5 x 45

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Hope this helped! Please let me know if I'm wrong!

Answer:

J. 36 Days

Step-by-step explanation:

60÷5 = 12

3×12 = 36

This question is incomplete, the complete question is;

A fair coin is tossed three times and the events AA, BB, and CC are defined as follows: A:{A:{ At least one head is observed }} B:{B:{ At least two heads are observed }} C:{C:{ The number of heads observed is odd }} Find the following probabilities by summing the probabilities of the appropriate sample points (note that 0 is an even number): a) P(B) =, b) P(A or B) =

Answer:

a) probability of B is 0.5

b) probability of (A or B)  is 0.875

Step-by-step explanation:

Given the data in the question;

The coin is tossed 3 times.

so let S represent the sample space with the probabilities;

S = [ HHH, HHT, HTH, THH, HTT, THT, TTH, TTT ]

so n(S) = 8

now let A be the set where at least one head is observed;

A = [ HHH, HHT, HTH, THH, HTT, THT, TTH, ]

n( A) = 7

let B be the set where at least two head is observed;

B = [ HHH, HHT, HTH, THH, ]

n(B) = 4

let C be the set where number of heads are odd;

C = [ HHH, HTT, THT, TTH ]

n(C) = 4

so

a) P(B) = ?

probability of B will be;

P(B) = n(B) / n(S)

we substitute

P(B) = 4 / 8 = 0.5

Therefore, probability of B is 0.5

b) P(A or B) = ?

the favorable number of cases to event A∪B is

A∪B = [ HHH, HHT, HTH, THH, HTT, THT, TTH, ]∪[ HHH, HHT, HTH, THH, ]  

A∪B = [ HHH, HHT, HTH, THH, HTT, THT, TTH, ]

n(A∪B) = 7

Now the probability of A or B will be

P( A∪B ) = n(A∪B) / n(S) = 7/8 = 0.875

Therefore, probability of (A or B)  is 0.875

Answer:

1, 2, 4, 19, 38, 76