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3 years ago

Evaluate the expression 4•9+6/-3

Mathematics

2 answers:

kykrilka [37]3 years ago

8 0

You have to multiplying first, then adding on 6 over negative 3 as a fraction. The parentheses it will be multiplying.

(4)(9)+6/-3

= 34.

It will help you.

Have a great day!

-Charlie

koban [17]3 years ago

5 0

4x9 + 6 = 42
Now, divide that by -3.
42 / -3 = -14
Your answer- -14

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Ruby uses 1/4 yard of ribbon to make 2 bows.Which expression shows the length of ribbon in each bow?

allochka39001 [22]

What you can do in this case is a rule of three to determine the length of each bow.
We have then:
1/4 ---> 2
x ------> 1
Clearing x we have:
x = (1/2) * (1/4)
x = 1/8
Answer:
the length of ribbon in each bow is
x = 1/8
Equivalently:
x = (1/4) / 2
Option 3

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3 years ago

What is the are of the walls and cellings ? & what is the area of the window? How many cans o paint should she buy ?

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3 years ago

Last year, Mollie collected 64 pieces of candy while trick or treating. This year her costume is so fabulous that people were ex

never [62]

Answer:

79.6875 % If you can round, please do.

Step-by-step explanation:

5 0

2 years ago

A movie theater charges $10 for adults and $6 for seniors. On a particular day when 357 people paid in admission, the total rece

olganol [36]

Answer:

Step-by-step explanation:

Determine the types of tickets involved.

There are student tickets and adult tickets.

Create a table to organize the information.

Type

Number

Value ($)

Total Value ($)

Student

Adult

506

Step 2. Identify what you are looking for.

We are looking for the number of student and adult tickets.

Step 3. Name. Represent the number of each type of ticket using variables.

We know the number of adult tickets sold was

less than three times the number of student tickets sold.

Let

be the number of student tickets.

Then

−

is the number of adult tickets.

Multiply the number times the value to get the total value of each type of ticket.

Type

Number

Value ($)

Total Value ($)

Student

Adult

−

(

−

)

506

Step 4. Translate: Write the equation by adding the total values of each type of ticket.

(

−

)

1506

Step 5. Solve the equation.

−

1506

−

1506

1551

students

Substitute to find the number of adults.

−

number of adults

(

)

−

136

adults

Step 6. Check. There were

student tickets at

each and

136

adult tickets at

each. Is the total value

$1506

We find the total value of each type of ticket by multiplying the number of tickets times its value; we then add to get the total value of all the tickets sold.

⋅

282

136

⋅

1224

_____

1506

✓

Step 7. Answer the question. They sold

student tickets and

136

adult tickets.

5 0

2 years ago

Raw scores on a certain standardized test one year were normally distributed, with a mean of 156 and a standard deviation of 23.

s344n2d4d5 [400]

Answer:

About 220 of the students scored less than 96

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 156 and a standard deviation of 23.

This means that $\mu = 156, \sigma = 23$

Proportion that scored less than 96:

p-value of Z when X = 96. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{96 - 156}{23}$

$Z = -2.61$

$Z = -2.61$ has a p-value of 0.00453.

About how many of the students scored less than 96?

0.00453 out of 48592.

0.00453*48592 = 220.1.

Rounding to the closest integer:

About 220 of the students scored less than 96

3 0

3 years ago