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
jok3333 [9.3K]
3 years ago
5

7 is a solution to the equation 3n + 9 = 33. true or false

Mathematics
1 answer:
iren2701 [21]3 years ago
3 0

Answer:

false

Step-by-step explanation:

3(7) = 21+9 = 30

You might be interested in
Problem page the longer leg of a right triangle is 1ft longer than the shorter leg. the hypotenuse is 9ft longer than the shorte
LenKa [72]
Hello,

To solve this problem we want to use the Pythagorean Theorem. 
The pythagorean theorem states that for a 90° triangle, 

a^{2} +  b^{2}  =  c^{2}

where a and b represent the two legs of the triangle, and c represents the hypotenuse. 

Let a = the longer leg and b = the shorter leg.
If the longer leg of the triangle is 1 foot longer than the shorter leg, then
a = b +1. 

If the hypotenuse is 9 feet longer than the shorter leg, then c = b + 9.
Using the equations we created, we can plug them into the Pythagorean Theorem to solve for a, b, and c. 

Doing this, we have:
a^{2} +  b^{2} =  c^{2}
(b+1)^{2}  + b =  (b+9)^{2}

Expanding this, we get b^{2} + 2b + 1 +  b^{2}  =  b^{2} + 18b + 81

 2b^{2} + 2b + 1 =  b^{2} + 18b + 81

 b^{2}  + 1 = 16b + 81

 b^{2} = 16b + 80
 
b^{2} - 16b - 80 = 0



Solving for b, we get b = 20, and b = -4.
The length of the side of a triangle cannot be negative, so we know that b = 20. 

However, we should check this with the original question to make sure it checks out.

a = b + 1
a = 20 + 1 = 21

c = b + 9
c = 20 + 9 = 29

So, we have a = 21, b = 20, and c = 29. (Also, 20-21-29 is a well known Pythagorean triple)
Using the Pythagorean Theorem, we have:

21^{2} +  20^{2} =  29^{2}
441 + 400 = 841
841 = 841, checks out.

So, the shorter leg is 20 feet, the longer leg is 21 feet, and the hypotenuse is 29 feet. 

Hope this helps!

7 0
3 years ago
I am stuck on this question of knowing how to break it down to get the answer
Anna71 [15]
Solve and simplify:
3 \times 3 - (( - 1) ^{2} - 2) ^{2}
3 \times 3 - (1 - 2) ^{2}
3 \times 3 - ( - 1)^{2}
3 \times 3 - (1)
3 \times 3 - 1
9 - 1
8

Hope this helped :)
5 0
4 years ago
What is the slope of the line 3x-7y=11
Tom [10]
Slope intercept form is y=mx+b where m=slope and b=yintercept so

3x-7y=11
add 7y to both sideds
3x=11+7y
subtract 11 from both sides
3x-11=7y
divide both sides by 7
3/7x-11/7=y
y=3/7x-11/7

slope is 3/7
8 0
4 years ago
Read 2 more answers
Please place the dot for me(20 points will give brainliest!!!)
Oksanka [162]

Answer:

2,

Step-by-step explanation:

The vertex is the very highest or very lowest point. X coordinates are listed first, then Y.

4 0
2 years ago
Mia paints interior walls at a rate of 12 m^2/h. At what rate does she paint in cm^2/min?
Elenna [48]
12m^2/h》cm^2/min

12m^2/h × 1 h/60 min=.2m^2/min

.2m^2/min × 10000cm^2/1 m^2=2000 cm^2/min

2000cm^2/min
6 0
3 years ago
Read 2 more answers
Other questions:
  • if a tank fills in 4hours and empties in 6hours how long does it take if the tank is emptying and filling at the same time, how
    14·2 answers
  • 1.What is the simplified form of each expression?
    7·1 answer
  • what is 7543762587646537659870970576434326 + 478964654513214375887o876u5464654353547566 divided by 9834790 x 4676696746436587697
    13·2 answers
  • The length of a running trail in the park is 12 miles.There are water fountains every 1/4 mile.How many fountains are along the
    13·1 answer
  • Our math team had m students last year, but this year it has already n students! By what percent did the number of students grow
    15·1 answer
  • The area of a triangular flag is 20 square centimeters. Its altitude is 2 centimeters longer than twice its base. Find the lengt
    7·1 answer
  • A dolphin is swimming 4 feet below the surface of the water. The number -4 represents the dolphin's position relative to the sur
    11·2 answers
  • Tell whether the lines through the given points are parallel, perpendicular, or neither.
    15·1 answer
  • Solve for x, will give brainliest !!
    14·1 answer
  • How many square feet of outdoor carpet will we need for this hole?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!