All categories

2 years ago

10 points! + Brainly

Mathematics

1 answer:

Cerrena [4.2K]2 years ago

5 0

Answer:

3n² + 4n - n

3 x 7² + 4 x 7 - 7

first do the exponent because there is no parentheses

3 x 49 + 4 x 7 - 7

second do either multiplication or division with ever is closes to the left

147 + 4 x 7 - 7

147 + 28 - 7

third do either addition or subtraction which ever is closes to the left

175 -7

168

finally the answer is 168

You might be interested in

When a class took a math test, 15% of the class failed, 25% made some mistakes (but didn’t fail), and 24 students got perfect sc

mart [117]

Answer:

There are 40 students in the class.

Step-by-step explanation:

We are given the following in the question:

Percentage of class that failed = 15%

Percentage of class that made mistakes but did not fail = 25%

Number of students that got perfect score = 24

Percentage of students that got perfect score =

$100\%-\text{Percentage of class that failed}-\text{Percentage of class that made mistakes but did not fail}\\= 100\%-15\%-25\%\\= 60\%$

Let x be the total number of students in the class.

Then, we can write:

$60\% \text{ of } x = 24\\60\% \times x = 24\\\\\displaystyle\frac{60}{100}\times x = 24\\\\x = 24\times \frac{100}{60}\\\\x = 40$

Thus, there are 40 students in the class.

5 0

3 years ago

Read 2 more answers

Find a particular solution to<br> y′′+6y′+5y=18te^(2t).

Andreas93 [3]

Answer:

idk just google it :)

Step-by-step explanation:

1. google it

6 0

3 years ago

Y = 2x + 3<br> y = -3x + 3

AnnyKZ [126]

Answer:

y = -1

Step-by-step explanation:

hopefully it helped

5 0

2 years ago

<img src="https://tex.z-dn.net/?f=x%283x%20%2B%207%29%20-%203x%20%3D%200" id="TexFormula1" title="x(3x + 7) - 3x = 0" alt="x(3x

sineoko [7]

Answer:

X=0

Step-by-step explanation:

7 0

3 years ago

Tell what the value of each point would be if

Effectus [21]

Answer:

if what? come on

Step-by-step explanation:

5 0

2 years ago