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
aleksandr82 [10.1K]
3 years ago
7

three times the result of subtracting a certain number from seven give the same answer as adding 11 to the number. find the numb

er​
Mathematics
1 answer:
GuDViN [60]3 years ago
8 0
3(x-7)=x+11
3x-21=x+11
3x=x+11+21
3x=x+32
3x-x=32
2x=32
x=32/2
x=16
You might be interested in
A hot air balloon hovers above its launch site at an altitude of 100 meters. The pilot of the balloon sights a parking lot at a
IgorLugansk [536]

Answer:

The horizontal distance between the parking lot and the launch site is 470 meters

Step-by-step explanation:

Let

x----->  the horizontal distance between the parking lot and the launch site

we know that

The tangent of angle of 12 degrees is equal to divide the altitude of 100 meters by the horizontal distance

so

tan(12°)=100/x

Solve for x

x=100/tan(12°)=470 meters

6 0
2 years ago
Solve the system of equations and choose the correct answer from the list of options.
Igoryamba

Answer:

x = -6/5

y = -8/5

Step-by-step explanation:

2x + y = -4

Y = 3x + 2

Substitute the second equation into the first equation

2x + 3x+2 = -4

Combine like terms

5x +2 = -4

Subtract 2 from each side

5x+2-2=-4-2

5x = -6

Divide by 5

5x/5 = -6/5

x = -6/5

Now we need to find y

y = 3x+2

y = 3(-6/5)+2

y = -18/5 + 10/5

y = -8/5

5 0
3 years ago
I don't understand this question.
Whitepunk [10]

Answer:

132

Step-by-step explanation:

:) brainliest please

6 0
2 years ago
Togo flew his ultralight plane to a landing field 30 miles away. With the wind, the flight took 3/5 hours. Returning against the
konstantin123 [22]

Answer:

Step-by-step explanation:

answer is W = 7 and A = 43.

8 0
3 years ago
Select the correct answer. what is this series written in sigma notation? 2.5 2.5(1.2) 2.5(1.2)2 ⋯ 2.5(1.2)87 a. ∑ k = 1 87 2.5
Marat540 [252]

<u> ∑ k = 1 88 2.5 ⁢ ( 1.2 ) k</u><u>  is this series written in </u><u>sigma notation. </u>

What is the series written in sigma notation?

  • A series can be represented in a compact form, called summation or sigma notation.
  • The Greek capital letter, ∑ , is used to represent the sum. The series 4+8+12+16+20+24 can be expressed as 6∑n=14n .
  • The expression is read as the sum of 4n as n goes from 1 to 6 .

Given:

2.5 + 2.5(1.2) + 2.5(1.2)2 + ⋯ + 2.5(1.2)87

If we look at the power it is always one less the term i.e., for first term the value of k=0.

So, the series in the form of summation can be written as

∑ k = 1 88 2.5 ⁢ ( 1.2 ) k

Learn more about sigma notation

brainly.com/question/16701078

#SPJ4

8 0
1 year ago
Other questions:
  • What's the answer to this hard question?
    8·1 answer
  • Solve the equation.<br><br> $x^2=100$
    11·1 answer
  • Locate fractions greater than 1 on a number line
    11·1 answer
  • Solve for x 4x−2=3x+4
    15·2 answers
  • 5/x - 9/y = 19/6<br>10/x + 6/y = 13/6​
    10·1 answer
  • 15 % of 100 is what<br> number?
    5·1 answer
  • Josiah is in the business of manufacturing phones. He pays a cost of $150 per phone produced for materials and labor and also mu
    12·1 answer
  • Which equation shows the correct factors for the quadratic equation 24x^2−15=54x?
    7·1 answer
  • Can someone help me with all these? .
    10·1 answer
  • What is the constant terms
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!