I need help with a math problem please show me how to do it step by step here is the problem
40 = -x^2-14x

Answer: [tex]\dfrac{3}{5}[/tex]

Step-by-step explanation:

Given : The number of pink marbles in bag= 8

Total number of marbles in bag= [tex]4+5+8+3=20[/tex]

Now, the number of marbles that are not pink =[tex]20-8=12[/tex]

We know that the formula to find the probability is :-

[tex]\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}[/tex]

Similarly, [tex]\text{P(not pink)}=\dfrac{12}{20}=\dfrac{3}{5}[/tex]

Neil has approximately [tex]\( 1 \frac{1}{30} \)[/tex]  gallons of white paint in total.

Let's calculate the total amount of paint step by step:

1. Convert fractions to a common denominator:

[tex]- \( \frac{1}{3} \) gallon = \( \frac{10}{30} \) gallons[/tex]

[tex]- \( \frac{1}{5} \) gallon = \( \frac{6}{30} \) gallons[/tex]

 [tex]- \( \frac{1}{2} \) gallon = \( \frac{15}{30} \) gallons[/tex]

2. Add the amounts of paint in the cans:

 [tex]\( \frac{10}{30} + \frac{6}{30} + \frac{15}{30} = \frac{31}{30} \) gallons[/tex]

3. Simplify the fraction:

 [tex]\( \frac{31}{30} = 1 \frac{1}{30} \) gallons[/tex]

Thus, Neil has approximately [tex]\( 1 \frac{1}{30} \)[/tex]  gallons of white paint in total.

To find out how much paint Neil has in total, we first converted the fractions to a common denominator of 30 to make them easier to add. This gave us [tex]\( \frac{10}{30} \) gallons, \( \frac{6}{30} \)[/tex] gallons, and [tex]\( \frac{15}{30} \)[/tex]  gallons for the three cans, respectively. Adding these fractions together gives[tex]\( \frac{31}{30} \)[/tex] gallons. To simplify, we divide 31 by 30, resulting in[tex]\( 1 \frac{1}{30} \)[/tex] gallons. Thus, Neil has approximately [tex]\( 1 \frac{1}{30} \)[/tex]  gallons of white paint in total.

complete question

neil has 3 partially full cans of white paint. They contain 1/3 gallion, 1/5 gallion, and 1/2 gallion of paint. about how much paint does neil have in all

6. Parenthesis around the 6.2 × (6 ÷ 2) + 1 = 4

7. Parenthesis around the 5 + (3 × 2) - 6 = 10

Expression 6:

To get an answer of 4, we need to group the multiplication and division first, before adding 1. Here's how we can rewrite the expression with parentheses:

6.2 × (6 ÷ 2) + 1

Expression 7:

To get an answer of 10, we need to perform the multiplication before the subtraction. Here's how we can rewrite the expression with parentheses:

5 + (3 × 2) - 6

Answer:

a.150

Step-by-step explanation:

We are given that a cell phone provider offers a plan that cots $30 per month plus $0.20 per text message sent or received.

A comparable plan costs $60 per month but offers unlimited text messaging.

a.If number of text messages sent or received  =150

For I plan

Cost of one text message sent or received per month=$0.20

Cost of plan per month=$30

Costs of 150 text messages sent or received=[tex]0.20\times 150=$30[/tex]

Hence, total costs of plan I =$30+$30=$60

But in II plan no charge for text message and cost of plan per month is $60

Hence, the text messages 150 would have to be sent or received in order for the plans to cost the same each month.

b.If number of text messages =50

Then the cost of messages in plan I=[tex]02.0\times 50[/tex]=$10

Cost of plan I =$30

Total cost of plan I=30+10=$40

But in second plan no charge for text messaging and cost per month is $60.

Therefore, plan I is better than second plan.Because the cost of plan I is less than the cost of second plan per month.

To find the values of a, b, and c, we can use the given information and solve the system of equations.

To find the values of a, b, and c, we can use the given information and solve the system of equations.

From the first two statements, we have a/c = 8 and a*c = 2. This allows us to solve for a and c.

Similarly, from the next two statements, we have a/b = -16 and a*b = -1. Using these equations, we can find the values of a and b.

Finally, the last statement gives us b/c = -0.5, and we can use this equation to find the value of c.

Substituting the appropriate values for a, b, and c, we find that a = 1, b = 0.0211, and c = -0.0211.

https://brainly.com/question/29050831

#SPJ2

The probability of picking a dime or a quarter is 3/4

Probability is a number that expresses the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

Given, you have 4 dimes, 5 quarters, and 3 pennies in your pocket.

There are a total of 4 + 5 + 3 = 12 coins in your pocket.

The probability of picking a dime or a quarter can be calculated as the sum of the probability of picking a dime and the probability of picking a quarter. Since the coins are selected randomly, each coin has an equal chance of being picked.

The probability of picking a dime is 4/12 or 1/3, since there are 4 dimes in the pocket out of a total of 12 coins.

The probability of picking a quarter is 5/12, since there are 5 quarters in the pocket out of a total of 12 coins.

Therefore, the probability of picking a dime or a quarter is:

P(dime or quarter) = P(dime) + P(quarter)

P(dime or quarter) = 4/12 + 5/12

P(dime or quarter) = 9/12

P(dime or quarter) = 3/4

So the probability of picking a dime or a quarter is 3/4, or three-fourths.

Learn more about probability here:

https://brainly.com/question/30034780

#SPJ2

Answer:

Hopefully this helps other people! :) I got it right on the test!

Answer:The answer is A

Step-by-step explanation:zz

The growth of bacteria will increase linearly. Then the correct option is B.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

The function is given below.

f(x) = 1.8x

The slope is positive. Then the bacteria will grow. And the degree of the equation is one. Thus, the equation is a linear equation.

The growth of bacteria will increase linearly. Then the correct option is B.

More about the linear equation link is given below.

https://brainly.com/question/11897796

#SPJ3

Answer:

Given the expression: [tex](4+5i)+(-3+7i)[/tex]

Aiko rewrites the equation by factoring out the [tex]i[/tex] from the expression and this wrote it as,

[tex](-3+7)i+(4+5)i[/tex]

but this is wrong because [tex]i[/tex] is an imaginary number which is with a number 5 and 7.

Therefore,  Aiko cannot factor out the [tex]i[/tex] because it is not present in both numbers -3 and 4

She could rewrote it as

[tex](4-3)+i(5+7)[/tex]

So, she incorrectly used the distributive property by combining the real number and the coefficient of the imaginary part.

Answer:

B: 5e + 4

Step-by-step explanation:

B: 5e + 4

Farrah = Emily*5+4

19=E5+4

19-4=E5

E5=15

E=3

Answer:

Jadyn's claim is wrong.        

Step-by-step explanation:

We are given the following information in the question:

Weight of Jadyn's fish = 2.120

Weight of Leah's fish = 2.12

Jadyn says his fish weighs more because 120 is larger than 12.

Jadyn is incorrect claiming the above fact as:

[tex]2.120 = 2.12\\\\2.120 = \displaystyle\frac{2120}{1000} = \displaystyle\frac{212}{100} = 2.12[/tex]

120 parts out of 1000 are compared to 12 parts of 100 which is equal.

Place value chart:

Place value:      Tens     Ones    .    Tenths    Hundredths    Thousandths

  Number 1:          1             2      .           1                  2                       0

 Number 2:           1            2       .          1                  2      

Answer:

c) 33°, 61°, and 86°

Step-by-step explanation:

because all angels of a triangle sum up to 180*

Final answer:

Factoring prime numbers is not applicable as they are already in their simplest form. In calculations involving exponents with prime numbers, exponent rules can be used to simplify or alter the expression. Understanding these rules empowers you to verify the results and improve your mental math skills.

Explanation:

Prime numbers are the building blocks of the number system, but interestingly, they cannot be factored further since they have only two distinct divisors: one and themselves. Therefore, the concept of factoring prime numbers doesn't apply because they are already in their simplest form. However, when you work with exponents and prime bases, such as in 24 × 10¹², you can manipulate the expression by using exponent rules to simplify or alter its form.

Exponents represent how many instances a base number is multiplied by itself. For example, 10³ equals 10 × 10 × 10, which is 1,000. Similarly, when you see an operation like (53)4, you can multiply the exponents (3 × 4) to understand this as 512, which is 5 multiplied by itself 12 times.

Mastering these concepts avoids confusion and allows for mathematical operations to be performed more readily in your head. Calculators handle these numbers with ease, but understanding the rules lets you confirm the accuracy of your work and can help in developing a life-long skill.

Your answer would be -6! -42= -6 divided by 7 or 7 X -6= -42