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
Bad White [126]
3 years ago
15

What is the solution to the following equation? x+(-21)=8

Mathematics
2 answers:
Yuki888 [10]3 years ago
8 0

Answer:

x=29

Step-by-step explanation:

rodikova [14]3 years ago
3 0

Answer:

x is 29.

Step-by-step explanation:

x-21=8 (same equation to solve)

+21  +21 (add 21 to both sides)

-------------

x= 29

You might be interested in
HELPP! Calculate S22 for the arithmetic sequence in which a12=2.4 and the common difference is d=3.4
Natalka [10]

Answer:

Option A is correct.

Value of S_{22} = 15.4

Step-by-step explanation:

Given: a_{12} = 2.4 and common difference(d) = 3.4

A sequence of numbers is arithmetic i.e,  it increases or decreases by a constant amount each term.

The sum of the nth term of a arithmetic sequence is given by;

S_n =\frac{n}{2}(2a+(n-1)d), where n is the number of terms, a is the first term and d is the common difference.

We also know the nth tern sequence formula which is given by ;

a_n = a+(n-1)d                             ......[2]

First find a.

it is given that a_{12} = 2.4

Put n =12 and d=3.4 in equation [2] we have;

a_{12} = a+(12-1)(3.4)

a_{12} = a+(11)(3.4)

2.4 = a + 37.4

Simplify:

a = - 35

Now, to calculate S_{22}

we use equation [1];

here, n =2 , a =-35 and d=3.4

S_{22} = \frac{22}{2}(2(-35)+(22-1)(3.4))

S_{22} = (11)(-70+21(3.4))

S_{22} = (11)(-70+71.4)

S_{22} = (11)(1.4)

Simplify:

S_{22} = 15.4

Therefore, the sum of sequence of 22nd term i.e, S_{22} = 15.4

8 0
3 years ago
Read 2 more answers
PLEASE HELP 10 POINTS
allochka39001 [22]

Divide 16/2 to get 8. Then multiply 3.14 x 8 x 8. That gives you 200.96 m. Hope this helps!

3 0
3 years ago
What is the percent?​
Brilliant_brown [7]

Answer:

What do u mean

Step-by-step explanation:

7 0
3 years ago
AC is tangent to circle O at point C. What is the measure of angle ACO?
zmey [24]

Answer:

m < ACO = 90 degrees.

Step-by-step explanation:

The line joining the center O of the circle to the point of contact of the tangent is a right angle.

3 0
3 years ago
Evaluate -7x + y5x<br> When x = -3, y = -9
Semmy [17]

Answer:

156

Step-by-step explanation:

-7(-3)+(-9)(5)(-3)

21+135

156

8 0
3 years ago
Read 2 more answers
Other questions:
  • one estimate for the rate at which natural process can replace topsoil that has been eroded is about 2 millimeters per year at t
    12·1 answer
  • I need 3 multiples of 10 that has 3 as one of the digits
    7·2 answers
  • Expression: 6(m + 2 + 7m)
    15·1 answer
  • Emili would like to estimate the probability of 2 or more heads coming up in 3 coin flips.
    8·1 answer
  • Consider the original triangle and the reduction. What is the length of side A in centimeters?
    13·1 answer
  • PLEASE HELP ASAP! THANK YOU LOTS! &lt;3
    8·2 answers
  • How do I solve this problem X/n = q
    7·1 answer
  • Please help! Will give brainly, 50 points!! I'm stuck with this question and I don't get it!
    13·2 answers
  • Last year, Rolls and Spins Adventure Park brought in a total of 3.2 x 109 dollars from the sale
    8·1 answer
  • Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!