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
emmasim [6.3K]
2 years ago
7

Please help will give brainliest...

Mathematics
1 answer:
den301095 [7]2 years ago
4 0

ummmm i dont know man sry

You might be interested in
The third term of an arithmetic sequence is-8, and the sum of the first 10 terms of the sequence is -230. Find:
mixas84 [53]

Answer:

The first term of the sequence is a = 4

The sum of the first 13 terms is -480

Step-by-step explanation:

Given that:

The third term is: a + 2d = - 8 --- (1)

The \  sum  \ of  \ the \  first \ 10  \ terms  \ is:

-230 = \dfrac{10}{2}[2a+ (10-1)d]

-230 =5[2a+ (9)d]

-230 = 10a + 45d

10a + 45d = -230     ----(2)

From (1) and (2)

a + 2d = - 8

10a + 45d = -230

From (1), let a = -8 - 2d

Replace, the value of a in (1) to equation (2)

10(-8 -2d) + 45d = -230

-80 -20d +45d =-230

25d = -230 + 80

25d = -150

d = -150/25

d = -6

From equation (1);

a + 2(-6) = -8

a -12 = -8

a = -8 + 12

a = 4

Thus,the first term of the sequence a = 4

The \  sum  \ of  \ the \  first \ 13  \ terms  \ is:

S_n = \dfrac{n}{2}[2a+(n-1)d]

S_n = \dfrac{13}{2}[2(4)+(13-1)*-6]

S_n =7.5 [8+(12)\times -6]

S_n =7.5 [8-72]

= -480

4 0
2 years ago
Can anyone help me solve this​
Zigmanuir [339]

Answer:

B

Step-by-step explanation:

THIS IS HOW YOU CAN FIND ANY MISSING ANGLE - ALSO SOLVES FOR X IN THIS QUESTION.

So, a traingle is 180 degrees.

A line is also 180 degrees.

We know that the angles that make up the triangle are 46, 90, and a missing angle

We need to find the missing angle to find x

To find the missing angle, we must subtract the known angles by the 180 degrees of the traingle.

So:

180-90

=

90

90-46

=

44

So we know the missing angle is 44 degrees.

Let subtract the missing angle(44 degrees) by the 180 degrees of the line:

180-44

=

136

<u>THIS IS WHAT ANSWERS THE OPTION METHOD THAT GIVES THE ANSWER</u>

So x equals 136. This is the missing angle x.

So, remember, both the line and the traingle are 180 degrees.

They both need to find the missing value, which we know is 44

The rest of both the triangle and line is 136 degrees.

Well, 136 degrees on the triangle is the known 90+46 degrees.

Since this will be the same on the line, we can think of x as:

90+46

This looks like answer 1.

Hope this helps! :)

Read top part so you can understand how to do future problems, and write in comments if you are confused/need more help.

5 0
3 years ago
Can you please show work and put answer <br><br> 2 (n + 5) = -2
tresset_1 [31]
2n + 10= -2
-10 -10

2n= -12
/2 /2

n= -6
5 0
2 years ago
Read 2 more answers
Solve the inequality for W:<br> 5W - 23 &lt; - 3 (3 - 4W)
KengaRu [80]
5w−23<−3(3−4w)

Simplify both sides of the inequality.

5w−23<12w−9

Subtract 12w from both sides.

5w−23−12w<12w−9−12w

−7w−23<−9

Add 23 to both sides.

−7w−23+23<−9+23

−7w<14

Divide both sides by -7.

−7w/−7 < 14/−7

w > −2

4 0
3 years ago
Which of the following best describes the relationship between the data displayed in the scatter plot below?
Naya [18.7K]

Answer: No association

6 0
2 years ago
Other questions:
  • Kyle and his brother Joel leave a rest stop at the same time traveling in opposite directions. After traveling for 6 hours, they
    15·2 answers
  • 2.333... rational or irrational
    5·2 answers
  • Please help me with this question im stuck on it for an hour im so confused i dont know how to do a but i can do b :)
    12·1 answer
  • What is 2x=y-10 <br> x+7=y
    15·1 answer
  • 15 points - Describe how to find the coordinates of the image of a point after a rotation.
    8·2 answers
  • Suppose U1 and U2 are i.i.d. Unif(0,1) withU1=0.1 and U2=0.8. Use the "cosine" version of Box-Muller to generate a single Nor(-1
    11·1 answer
  • 16% of 23 <br> please helpppppp <br> 1% of the same number is 4.6
    6·1 answer
  • If two angles are complementary and one angle is 89º what is the measure of the other angle?
    7·1 answer
  • Which expression is equivalent to -p+2 -2p+ 8?
    13·1 answer
  • Pre-algebra Volumes. GIVING BRAINLEST! TO FIRST ANSWER. 25 POINTS!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!