2 years ago

NEED HELP!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Aleks [24]2 years ago

5 0

Answer:-602

Step-by-step explanation:

First term=a=-143

common difference=d=-134-(-143)=9

Using the formula

Sn=n/2(2a+d(n-1))

S28=28/2 (2(-143)+9(28-1))

S28=14(-286+9x27)

S28=14(-286+243)

S28=14(-43)

S28=-602

You might be interested in

ANSWER THIS USING INVERSE OPERATIONS AND PROVIDE TH STEPS

Airida [17]

Answer:

x = 12

Step-by-step explanation:

5+x2 = 2x2+13

5+x2 = 4+13

5+x2÷2 = 17

5-5+x = 17-5

x = 12

5 0

3 years ago

Read 2 more answers

Problem 17 Mrs. Casey, a sixth grade math teacher, ordered one package of pencils for each of her 92 students Each package conta

Semmy [17]

Answer:

1104

Step-by-step explanation:

1 package had 12 pencils

thus, 92 packages will have = (92*12) = 1104 pencils

4 0

1 year ago

Are 16% of M&M’s Green? Mars, Inc. claims that 16% of its M&M plain candies are green. A sample of 100 M&Ms is rando

wolverine [178]

Answer: This result is not unusual.

So, it does not seem that the claimed rate of 16% is wrong

Step-by-step explanation:

Since we have given that

n = 100

p = 0.16

q = 1 - 0.16 = 0.84

So, Mean would be

$np=100\times 0.16=16$

and standard deviation would be

$\sqrt{np(1-p)}=\sqrt{100\times 0.16\times 0.84}=3.67$

Now, if there are 19 green,

so, we will check how it is far,

$\dfrac{19-16}{3.67}=\dfrac{3}{3.67}=0.817$

Since it is 0.817 standard deviations away from the mean.

So, this result is not unusual.

So, it does not seem that the claimed rate of 16% is wrong.

4 0

3 years ago

Which complex number has a distance of √ 17 from the origin on the complex plane? 2 + 15i 17 + i 20 – 3i 4 – i

loris [4]

Answer:

4-i

Step-by-step explanation:

7 0

2 years ago

Please help I'm timed!

garik1379 [7]

C 12 because there is a 2 in 6 chance you will get them and you times that by 6 to get 12 out of 36.

8 0

2 years ago

Read 2 more answers