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
MaRussiya [10]
2 years ago
13

NEEEEED HELP ASAP ASAP

Mathematics
2 answers:
LiRa [457]2 years ago
6 0

Answer:

90°-40°

=50°

50°÷2

=25°

Step-by-step explanation:

Blizzard [7]2 years ago
4 0

Answer:

x = 25

Step-by-step explanation:

2x + 40 = 90

2x = 90 - 40

2x = 50

x = 25

You might be interested in
13.62<br><br> Round to the<br> nearest whole<br> number.
Ivenika [448]

Answer:

14

Step-by-step explanation:

when rounding you round up when the number is 5+ but if it's anything below 5 you go down instead, making this answer being 14

7 0
2 years ago
Show that if X is a geometric random variable with parameter p, then
Lubov Fominskaja [6]

Answer:

\sum_{k=1}^{\infty} \frac{p(1-p)^{k-1}}{k}=-\frac{p ln p}{1-p}

Step-by-step explanation:

The geometric distribution represents "the number of failures before you get a success in a series of Bernoulli trials. This discrete probability distribution is represented by the probability density function:"

P(X=x)=(1-p)^{x-1} p

Let X the random variable that measures the number os trials until the first success, we know that X follows this distribution:

X\sim Geo (1-p)

In order to find the expected value E(1/X) we need to find this sum:

E(X)=\sum_{k=1}^{\infty} \frac{p(1-p)^{k-1}}{k}

Lets consider the following series:

\sum_{k=1}^{\infty} b^{k-1}

And let's assume that this series is a power series with b a number between (0,1). If we apply integration of this series we have this:

\int_{0}^b \sum_{k=1}^{\infty} r^{k-1}=\sum_{k=1}^{\infty} \int_{0}^b r^{k-1} dt=\sum_{k=1}^{\infty} \frac{b^k}{k}   (a)

On the last step we assume that 0\leq r\leq b and \sum_{k=1}^{\infty} r^{k-1}=\frac{1}{1-r}, then the integral on the left part of equation (a) would be 1. And we have:

\int_{0}^b \frac{1}{1-r}dr=-ln(1-b)

And for the next step we have:

\sum_{k=1}^{\infty} \frac{b^{k-1}}{k}=\frac{1}{b}\sum_{k=1}^{\infty}\frac{b^k}{k}=-\frac{ln(1-b)}{b}

And with this we have the requiered proof.

And since b=1-p we have that:

\sum_{k=1}^{\infty} \frac{p(1-p)^{k-1}}{k}=-\frac{p ln p}{1-p}

4 0
3 years ago
12 points What’s 1+1
aliya0001 [1]

Answer:

2

Step-by-step explanation:

are you siruous

3 0
2 years ago
Read 2 more answers
Help me please <br><br> will get rewared brainly if correct answer
larisa [96]

Well, split it into 3 shapes

21 x 10 = 210

3 x 6 = 18

2 x 6 = 12

210 + 18 + 12 = 240 square cm

imahe for more context

plzzz give me brainliest

5 0
3 years ago
What is the equation of a circle with center (-4 2) and diameter 6?
ASHA 777 [7]

Use the general form:-

(x - a)^2 + (y - b)^2 = r^2 where (a, b) is the centre and r = radius

Here the radius = 1/2 * 6 = 3 so r^2 = 9 and we have the equation:-

(x + 4)^2 + (y - 2)^2 = 9 (answer)

7 0
2 years ago
Other questions:
  • What graph could represent the function f(x)= 1/x -1 ?
    14·1 answer
  • This relation is an inverse variation {(-1,8),(4,-2),(-2,4)} what equation represents this relation?
    13·1 answer
  • A company is paying a local radio station to run its commercials. The cost for running commercials is a one-time campaign fee an
    6·1 answer
  • Find the eighth term of the sequence given by the rule, tn = -3n + 10
    5·2 answers
  • What is the estimate of 176?
    8·1 answer
  • (-8,-2) and (-4,6)<br>what does y =​
    9·1 answer
  • 1. ΔEFG, the measure of ∠G=90°, the measure of ∠E=40°, and EF = 75 feet. Find the length of GE to the nearest tenth of a foot
    9·1 answer
  • The French club is sponsoring a bake sale. If their goal is to raise at least $135, how many pastries must they sell at $2.50 ea
    11·2 answers
  • Solve the inequality: -8(8x – 16) &lt; 64(2 – 2).
    7·1 answer
  • There are 20 marbles in a jar. 6 blue marbles, 8 green marbles, 4 red marbles, and 2 yellow marbles. Jackson randomly picked 3 m
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!