Ruth has 12 feet of ribbon.

She uses 7 feet of it for a craft project and gives 28 inches of it to her sister.

How many inches of ribbon does she have left?


Enter your answer in the box.

Answer:

hope i could help you

Step-by-step explanation:

have a nice day

Answer:

Creo que es 36

Step-by-step explanation

:D

Answer:

36

Step-by-step explanation:

Answer:The specific heat of a substance is defined as the amount of heat required to raise the temperature of one gram of the substance by one degree Celsius (or Kelvin).

To find the specific heat of the unknown substance, we can use the following equation:

Q = m x c x ΔT

where Q is the heat gained or lost, m is the mass of the substance, c is its specific heat, and ΔT is the change in temperature.

In this problem, we know the mass and initial and final temperatures of both the unknown substance and the water, as well as the specific heat of water. We can use this information to calculate the heat gained by the water, which must be equal to the heat lost by the unknown substance:

Heat gained by water = Heat lost by unknown substance

m(water) x c(water) x ΔT(water) = m(substance) x c(substance) x ΔT(substance)

We can plug in the values we know and solve for the specific heat of the unknown substance:

m(water) = 75.0 g

c(water) = 4.18 J/g°C

ΔT(water) = 27.1 °C - 20.00 °C = 7.1 °C

m(substance) = 100.0 g

ΔT(substance) = 200.0 °C - 27.1 °C = 172.9 °C

75.0 g x 4.18 J/g°C x 7.1 °C = 100.0 g x c(substance) x 172.9 °C

Simplifying this equation, we get:

c(substance) = (75.0 g x 4.18 J/g°C x 7.1 °C) / (100.0 g x 172.9 °C)

c(substance) = 0.197 J/g°C

Therefore, the specific heat of the unknown substance is 0.197 J/g°C.

Step-by-step explanation:

Answer:

The specific heat of the unknown substance is 0.39 J/g°C.

Step-by-step explanation:

To solve this problem, we can use the principle of conservation of energy, which states that the heat lost by the unknown substance is equal to the heat gained by the water and the calorimeter. We can express this principle mathematically as:

Q_lost = Q_gained

where Q_lost is the heat lost by the unknown substance, and Q_gained is the heat gained by the water and calorimeter.

We can calculate Q_lost using the formula:

Q_lost = m × c × ΔT

where m is the mass of the unknown substance, c is its specific heat, and ΔT is the change in temperature it undergoes.

We can calculate Q_gained using the formula:

Q_gained = (m_water + m_calorimeter) × c_water × ΔT

where m_water is the mass of the water, m_calorimeter is the mass of the calorimeter, c_water is the specific heat of water, and ΔT is the change in temperature of the water and calorimeter.

Since the system reaches an equilibrium temperature, we can set Q_lost equal to Q_gained and solve for the specific heat of the unknown substance (c).

Here's the calculation:

Q_lost = Q_gained

m × c × ΔT = (m_water + m_calorimeter) × c_water × ΔT

100.0 g × c × (200.0 °C - 27.1 °C) = (75.0 g + 75.0 g) × 4.18 J/g°C × (27.1 °C - 20.00 °C)

Simplifying:

c = [(75.0 g + 75.0 g) × 4.18 J/g°C × (27.1 °C - 20.00 °C)] / (100.0 g × (200.0 °C - 27.1 °C))

c = 0.39 J/g°C

Therefore, the specific heat of the unknown substance is 0.39 J/g°C.

Answer:

Step-by-step explanation:

center=(-1,1)

radius=√16=4

distance between (-1,1) and (3,1)=√[(3+1)²+(1-1)²]=√[16+0]=√16=4=radius

Hence point lies on the circle.

[  3   9   13 ] is the Matrix showing all types of property available in key west .

A matrix is a rectangular array or table of numbers, symbols, or expressions arranged in rows and columns to represent a mathematical object or an attribute of such an entity in mathematics.

given in the table that how many types of property are there in the table

its a simple matrix which u can directly see

its a  3 x 1 matrix ...

[3  9  13] this matrix shows the required value

hope this helps...

learn more about matrix here :

brainly.com/question/28180105

#SPJ13

Answer:  [3 9 13]

Step-by-step explanation:

Answer:

f(x) = 15

Step-by-step explanation:

"If f(x)= 5x + 40, what is f(x) when x = -5?"

Substitute x for -5:

f(x) = 5x + 40

f(x) = 5(-5) + 40

f(x) = -25 + 40

f(x) = 15

Answer:

Step-by-step explanation: well, you will more than likely get it at least 60%-80% of the time! If this doesn't help i can try to explain in a lot more detail unless someone does for me!

The sum of the square of the ages is 405.

Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, and the sum refers to the outcome of the operation.

Given:

The Ages of seven children are listed: x = 5, 5, 11, 9, 8, 5, 8.

The squared of the ages:

= 25, 25, 121, 81, 64, 25, 64

The sum of the square of the ages:

= 25 + 25 + 121 + 81 + 64 + 25 + 64

= 405

Therefore, the result is 405.

To learn more about the addition;

brainly.com/question/29464370

#SPJ1

Answer:

P≈28068.32

Step-by-step explanation:

Grace needs to invest, to the nearest cent, for the value of the account to reach $46,000 in 13 years is 27705.78944.

We have given that,

Grace is going to invest in an account paying an interest rate of 3.8% compounded continuously.

We have to determine how much would Grace need to invest, to the nearest cent, for the value of the account to reach $46,000 in 13 years.

\(A=Pe^{rt}\)

A=46000, t=13  ,r=0.038

\(Pe^{0.039\left(13\right)}=46000\)

\(Pe^{0.039\left(13\right)}=46000\)

\(\frac{Pe^{0.039\cdot \:13}}{e^{0.507}}=\frac{46000}{e^{0.507}}\)

\(P=\frac{46000}{e^{0.507}}\)

\(\quad P=27705.78944\)

Therefore, Grace needs to invest, to the nearest cent, for the value of the account to reach $46,000 in 13 years is 27705.78944.

To learn more about the account balance visit:

https://brainly.com/question/2151013

#SPJ2

The number of meetings they attended in the last five years (x) and the number of papers they submitted to peer reviewed journals (y) during the same period is \(-8.6+3.15\).

What is formula for slope and intercept is?

\($$\begin{aligned}& b=\frac{n \sum x y-\left(\sum x\right)\left(\sum y\right)}{n \sum x^2-\left(\sum x\right)^2} \\& a=\bar{y}-b \bar{x} \\& \hat{y}=a+b x\end{aligned}$$\)

The slope is

\($$\begin{aligned}b & =\frac{n \sum x y-\left(\sum x\right)\left(\sum y\right)}{n \sum x^2-\left(\sum x\right)^2} \\& =\frac{12 \times 318-(12 \times 4)(12 \times 4)}{12 \times 232-(12 \times 4)^2} \\& =3.15\end{aligned}$$\)

The intercept is

\($$\begin{aligned}a & =\bar{y}-b \bar{x} \\& =4-3.13 \times 4 \\& =-8.6\end{aligned}$$\)

The regression equation is

\($$\begin{aligned}\hat{y} & =a+b x \\& =-8.6+3.15 x\end{aligned}$$\)

To learn more about regression equation visit:https://brainly.com/question/14184702

#SPJ1

We have in this case the difference of Perfect Cubes since we have:

We know that this case can be factored as follows:

If we have that:

a = x

b = 2

Then, we have:

Therefore, the factored form of the perfect cube (for difference) is:

Answer:

x=5 over 2 (it's a fraction)

Step-by-step explanation:

STEP 1 distribute : 4-1 (2x+4)=5

4-2x-4=5

STEP 2 subtract: 4-2x-4=5

-2x=5

STEP 3 divide both sides of the equation by the same term:

-2x=5

-2x 5

----- ------

-2 -2

STEP 4 simplify:

cancel the terms that are both the numerator and denominator

divide the numbers

x= - 5 over 2 (fraction)

I hope this helps

The Prime factorization of 40 with exponents is 2^3 * 5. This means that 40 can be expressed as the product of three 2s and one 5.

The prime factorization of 40 with exponents, we start by dividing it by the smallest prime number, which is 2. Let's proceed step by step:

Step 1: Divide 40 by 2.

40 ÷ 2 = 20

Step 2: Continue dividing the quotient by 2 until it is no longer divisible.

20 ÷ 2 = 10

Step 3: Divide the new quotient, 10, by the next prime number, which is 2.

10 ÷ 2 = 5

Step 4: The new quotient, 5, is a prime number. We have completed the factorization.

Now, let's write the prime factorization of 40:

40 = 2^3 * 5

In exponential form, we can express the prime factorization as:

40 = 2 * 2 * 2 * 5 = 2^3 * 5

Therefore, the prime factorization of 40 with exponents is 2^3 * 5. This means that 40 can be expressed as the product of three 2s and one 5.

To know more about Prime factorization.

https://brainly.com/question/30644940

#SPJ11

Answer: I THINK 250

Step-by-step explanation: 125 is half and 125 times 2 is 250.

(i) Exactly two of the events hold:

(a ∩ b) ∪ (a ∩ c) ∪ (b ∩ c)

(ii) At least one event holds:

a ∪ b ∪ c

The expression for "exactly two of the events hold" is found by considering all possible combinations of two events out of the three events (a, b, c) that can hold, while the other event does not hold. This is achieved by taking the union of the intersections of each combination of two events (a and b, a and c, or b and c) and the complement of the intersection of all three events.

The expression for "at least one event holds" is found by considering the union of all three events, which means that any of the events (a, b, c) can hold independently, or two or all three events can hold simultaneously. This is because the union of events represents the set of outcomes where at least one of the events holds.

Learn more about Event Expressions In Intersections here:

https://brainly.com/question/14333983

#SPJ4

Answer:

Step-by-step explanation:

-4x-3=y

Step-by-step explanation:

p-p /pq+1

sin

−1

(

1+p

2

2p

Answer: 6

Step-by-step explanation:

2r+r+s+2s =2×r + r×1 + s×1 + 2×s

In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.

Here, given that,

2r+r+s+2s

=2×r + r×1 + s×1 + 2×s

Hence,

each sum as the product of two factors 2r+r+s+2s =2×r + r×1 + s×1 + 2×s

To learn more on multiplication click:

brainly.com/question/5992872

#SPJ1

Answer: The expression 2√2 + √50 is equivalent to 7√2.

Step-by-step explanation: When 2√2 + √50 is added together, the result if 7√2.

Answer:

0.78¢

Step-by-step explanation:

if 3.5 lbs of bananas is $2.73, then we need to divide each side by 3.5 to get 1 lb of bananas

1 lb = 0.78¢

To check our work, we can do 0.78x3.5 = 2.73

Hope this helps! Please mark Brainliest if this helped :)

Answer:

6 feet per minute.

Step-by-step explanation:

The turtle and snail are moving towards each other, so their speeds add up. Therefore, the combined speed at which they approach each other is:

5 feet/min (turtle's speed) + 1 feet/min (snail's speed) = 6 feet/min

Therefore, the turtle and snail are approaching each other at a speed of 6 feet per minute.

Answer:

6 feet per minute.

Answer:

40

120

Step-by-step explanation:

Step 1: Write expressions

240 - 4g - g

240 - (4g - g)

Step 2: Simplify expressions

240 - 5g

240 - 3g

Step 3: Substitute g

240 - 5(40) = 40

240 - 3(40) = 120

(a) Y is a random variable that is independent of X and E.

(b) The variance of Y cannot be calculated

(a) If X and E are independent random variables and Y = 8 + 4X + E, then Y is a linear combination of X and E:

Y = 8 + 4X + E = c + 4X + (E - c)

where c is a fixed number. As a result, Y is a random variable that is independent of X and E.

(b) If X and E are not independent and E = U, a random variable independent of X, then Y may be written as follows:

Y = 8 + 4X + U

As a result, Y is a random variable that is a function of X and U but is not independent of X and U. To calculate the variance of Y, we require the covariance between X and U as well as the variances of X and U. The variance of Y cannot be calculated without furthur information.

For more such questions on Variables, click on:

https://brainly.com/question/25215474

#SPJ4

Step-by-step explanation:

therefore, the correct option should be A.

Answer:

Step-by-step explanation:

5

,

8

,

11

,

14

,

17

This is an arithmetic sequence since there is a common difference between each term. In this case, adding

3

to the previous term in the sequence gives the next term. In other words,

a

n

=

a

1

+

d

(

n

−

1

)

.

Arithmetic Sequence:  

d

=

3

This is the formula of an arithmetic sequence.

a

n

=

a

1

+

d

(

n

−

1

)

Substitute in the values of

a

1

=

5

and

d

=

3

.

a

n

=

5

+

(

3

)

(

n

−

1

)

Simplify each term.

Matt ate 1/6 of the bag of peanut

Matt had 4/6 bag of peanut

He ate a quarter of what was in the bag

The amount of peanut he ate can be calculated as follows

= 4/6 × 1/4

= 4/24

= 1/6

Hence Matt ate 1/6 of the bag of peanut

Read more on quarter here
https://brainly.com/question/29245182

#SPJ1

Answer: B 46.48% is the answer

Step-by-step explanation: looking at the z score and calculating it is how I got the answer.