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
REY [17]
3 years ago
5

I need help

n="absmiddle" class="latex-formula">
Mathematics
2 answers:
Phoenix [80]3 years ago
5 0

Answer:

x = 7

Step-by-step explanation:

First add 5 on both sides to get 3x = 21, then divide 3 on both sides to get x = 7.

Hope this helps you :)

photoshop1234 [79]3 years ago
4 0

Answer: x = 7

Step-by-step explanation:

do opposites to both sides. what is the opposite of -5? it would be plus 5.

add 5 to both sides

3x = 21

now what is the opposite of 3 times x? 3 divided by.

divide 3 to both sides

x = 7

You might be interested in
The table shows a company’s profit based on the number of pounds of food produced.
Bingel [31]

Answer:

$5,300

Step-by-step explanation:

Formulae used,

a=\dfrac{(\sum x^2y\sum xx)-(\sum xy\sum xx^2)}{(\sum xx\sum x^2x^2)-({\sum xx^2)}^2}

b=\dfrac{(\sum xy\sum x^2x^2)-(\sum x^2y\sum xx^2)}{(\sum xx\sum x^2x^2)-({\sum xx^2)}^2}

c=\dfrac{\sum y}{n}-b\frac{\sum x}{n}-a\frac{\sum x^2}{n}

Where,

\sum xx=\sum x^2-\dfrac{(\sum x)^2}{n}

\sum xy=\sum xy-\dfrac{\sum x\sum y}{n}

\sum xx^2=\sum x^3-\dfrac{\sum x\sum x^2}{n}

\sum x^2y=\sum x^2y-\dfrac{\sum x^2\sum y}{n}

\sum x^2x^2=\sum x^4-\dfrac{(\sum x^2)^2}{n}

Putting the values from the table, we get the best fit line as,

y= -0.0817x^2 + 102.24x - 20421

As we want to calculate the profit at 350 pounds, so putting x=350, we get

y= -0.0817(350)^2 + 102.24(350) - 20421=\$5354.75


5 0
4 years ago
Read 2 more answers
Alyssa’s bank charges $0.15 for each check written, $0.25 per ATM transaction, and a monthly fee to maintain a checking account.
EastWind [94]

Answer:

Correct answer: 2.25

7 0
3 years ago
Two lines are parallel. The equation of the first line is y = –3x + 5. Which of the following cannot be the equation of the seco
zhenek [66]
For the equation to be equal it should have a slope of -3
a is part of the equation of the second line.b. <span>is</span> not part because x-3y=-3 -3y=-x-3 y= 1/3x+1  so it is not part of <span>the</span> equation of the second line<span>c</span> is part because y= -3x-6
d. <span>is</span> part because 6x+2y=2 2y=-6x+2 y= (-6x+2<span>)</span>/2 y=-3x+1

So <span>yor</span> answer is B.
3 0
3 years ago
What is 4x+9=k solve for the x
Gre4nikov [31]
I believe the answer is 13. You would take x from both sides, then add four plus nine. Hope this helps, have a nice day
8 0
4 years ago
PLLLLSSS HELP ME ASAP!
erastovalidia [21]
The answer to the first one is ' D '.
(All the angles inside a triangle have to add up to exactly 180 degrees.)

The answer to the second one is  ' C ' .
(If two sides are equal, then the sides opposite them are also equal.)
3 0
3 years ago
Other questions:
  • Alice is making a sandwich to pack in her lunch. She has 2 different kinds of bread, 3 cheeses, 4 lunch meats, and 2 condiments
    13·1 answer
  • We assume that our wages will increase as we gain experience and become more valuable to our employers. Wages also increase beca
    6·1 answer
  • "t is greater than zero and less than or equal to 5”. translate in numerical form.
    6·2 answers
  • Sum of the numbers m and n decreased by their product; write the algebraic expression​
    11·1 answer
  • What is 1 3/4 divided by 2?
    6·1 answer
  • Sort data from least to greatest
    10·1 answer
  • Can someone help me find the slope &amp; y-intercept of the line
    9·1 answer
  • 6 cm<br> 16 cm<br> What is the volume of the cylinder?
    11·1 answer
  • F/4&lt;2 substitute 8 for f
    14·1 answer
  • Alexandra finished 3/5th of her work. What percentage of work did she complete?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!