1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lerok [7]
3 years ago
10

Rachel uses 75 inches of ribbon to make 4 bows. She uses the same amount of ribbon to make each bow. 1 foot = 12 inches 1 yard =

3 feet How many yards of ribbon will Rachel use to make 12 bows? Enter the answer in the box. yards​
Mathematics
1 answer:
olasank [31]3 years ago
5 0

Answer: 6.25 yards

Step-by-step explanation:

75 inches = 4 bows

To get 12, you have to multiply 4 by 3. Therefore, you also have to multiply 75 by 3.

75*3 is 225.

225 inches = 12 bows

225 inches is 6.25 yards. Hope this helps :)

You might be interested in
7n-4=31 I need help to solve n
vfiekz [6]
7n-4=31
7n=31-4
7n=27
n=27/7
:n=3
It’s equation and it’s really easy to solve
8 0
3 years ago
N^2 + 36n + c "find the value of c that completes the square"
RSB [31]

For this case we have the following polynomial:

n ^ 2 + 36n + c

To find the value of c that completes the square, we use the following equation:

c = (\frac {b} {2}) ^ 2

Where,

  • <em>b: coefficient of the variable of degree 1 </em>

Substituting values we have:

c = (\frac {36} {2}) ^ 2\\c = (18) ^ 2\\c = 324

Answer:

the value of c that completes the square is:

c = 324

8 0
3 years ago
A car insurance company has determined that 8% of all drivers were involved in a car accident last year. Among the 15 drivers li
svetlana [45]

Answer:

There is an 11.3% probability of getting 3 or more who were involved in a car accident last year.

Step-by-step explanation:

For each driver surveyed, there are only two possible outcomes. Either they were involved in a car accident last year, or they were not. This means that we solve this problem using binomial probability concepts.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.\pi^{x}.(1-\pi)^{n-x}

In which C_{n,x} is the number of different combinatios of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And \pi is the probability of X happening.

In this problem

15 drivers are randomly selected, so n = 15.

A success consists in finding a driver that was involved in an accident. A car insurance company has determined that 8% of all drivers were involved in a car accident last year.  This means that \pi = 0.08.

What is the probability of getting 3 or more who were involved in a car accident last year?

This is P(X \geq 3).

Either less than 3 were involved in a car accident, or 3 or more were. Each one has it's probabilities. The sum of these probabilities is decimal 1. So:

P(X < 3) + P(X \geq 3) = 1

P(X \geq 3) = 1 - P(X < 3)

In which

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)

P(X = x) = C_{n,x}.\pi^{x}.(1-\pi)^{n-x}

P(X = 0) = C_{15,0}.(0.08)^{0}.(0.92)^{15} = 0.2863

P(X = 1) = C_{15,1}.(0.08)^{1}.(0.92)^{14} = 0.3734

P(X = 2) = C_{15,2}.(0.08)^{2}.(0.92)^{13} = 0.2273

So

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.2863 + 0.3734 + 0.2273 = 0.887

Finally

P(X \geq 3) = 1 - P(X < 3) = 1 - 0.887 = 0.113

There is an 11.3% probability of getting 3 or more who were involved in a car accident last year.

5 0
3 years ago
Y=4x-9 y=x-3 solve by substitution
Arisa [49]

Answer:

x=2

Step-by-step explanation:

x-3=4x-9

x=4x-6

-3x=-6

x=2

7 0
3 years ago
Read 2 more answers
It is asserted that 80% of the cars approaching an individual toll both in New Jersey are equipped with an E-ZPass transponder.
Alborosie

Answer:

Option B, At least three will have the transponder

Step-by-step explanation:

<u>Step 1:  Find the probability in 6 cars</u>

6 * %80 or 6 * 0.8

4.8

Answer:  Option B, At least three will have the transponder

5 0
3 years ago
Other questions:
  • Find four distinct complex numbers (which are neither purely imaginary nor purely real) such that each has an absolute value of
    5·1 answer
  • If
    9·1 answer
  • The ski club at a local school wants to hold a bake sale. They are selling cookies for five dollars a dozen. Their supplies cost
    7·1 answer
  • * 14 * x=2 * 28 . What x equal ?
    15·2 answers
  • This is not a graded question
    6·1 answer
  • ⚠️⚠️⚠️NO ONE HAS HELPED ME! PLEASE I Need HELP QUICK!⚠️⚠️⚠️ —complete the following punnett square, show the genotype produced b
    6·1 answer
  • Set A contains 35 elements and set B contains 22 elements. If there are 40 elements in (A ∪ B) then how many elements are in (A
    15·1 answer
  • Solve the system of linear equations by substitution: (SHOW UR WORK)<br> y=-x<br> y=3x-4
    6·1 answer
  • Consider the system of equations shown in the graph.
    9·2 answers
  • Quick algebra 1 question for 50 points!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!