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
Alenkasestr [34]
3 years ago
11

There are some coloured pins in a bag.

Mathematics
1 answer:
konstantin123 [22]3 years ago
8 0

Answer:

a) green=0.3, yellow=0.1

b) 12

Step-by-step explanation:

A

a) 0.35+0.25=0.6

1-06=0.4

0.4-0.3=0.1

b) 0.35=7/20=14

0.25=1/4=5/20=10

0.1=1/10=2/20=4

0.3=3/10=6/20=12

You might be interested in
An experimental serum was injected into 500 guinea pigs.​ Initially, 50 of the guinea pigs had circular​ cells, 100 had elliptic
postnew [5]

Answer:

2

Step-by-step explanation:

4+6=9

3 0
3 years ago
If 3t - 7=5t, then 6t=?
Eddi Din [679]
Minus 2t both sides
-7=2t
times 3 both sides
-21=6t
6t=-21
5 0
3 years ago
Adimas found the mean of her 11 math test scores for the first semester. X = StartFraction (76 87 65 88 67 84 77 82 91 85 90) Ov
Reika [66]

To find the solution we will first find the difference between each number and mean, and then substitute the value in the formula of standard deviation.

The standard deviation is 8.4477 and the variance is 71.40.

Given to us

  • Test scores of Adimas = (76, 87, 65, 88, 67, 84, 77, 82, 91, 85, 90)
  • Mean = 81

<h3>Standard Deviation</h3>

difference between each number and mean,

x_1 -\mu= 76-81 = -5\\&#10;x_2-\mu = 87-81 = 6\\&#10;x_3-\mu = 65-81 = -16\\&#10;x_4-\mu = 88 -81 = 7\\&#10;x_5-\mu = 67-81 = -14\\&#10;x_6 -\mu= 84-81 = 3\\&#10;x_7 -\mu= 77-81 = -4\\&#10;x_8 -\mu= 81-81 = 1\\&#10;x_9 -\mu= 91-81 = 10\\&#10;x_{10}-\mu=85-81 = 4\\&#10;x_{11} -\mu= 90-81 = 9

\sum(x-\mu)^2 = x_1^2+x_2^2+x_3^2+x_4^2+x_5^2+x_6^2+x_7^2+x_8^2+x_9^2+x_{10}^2+x_{11}^2

                 =  25 + 36 + 256 + 49 + 196 + 9 + 16 + 1 + 100 +16 + 81

                 = 785

\rm{ Standard\ Deviation = \sqrt{\dfrac{\sum{(X-\mu)^2}} {n}

                             \sigma= \sqrt{\dfrac{785}{11}}\\\\&#10;\sigma = 8.4477

<h3>Variance</h3>

Variance = \sigma ^2

              = 71.40

Hence, the standard deviation is 8.4477 and the variance is 71.40.

Learn more about Standard Deviation:

brainly.com/question/12402189

3 0
3 years ago
Joel walked 2/5 of a mile to the store, 3/10 of a mile to the library, and 1/20 of a mile to the post office. Let x = the total
nadezda [96]
3/4 a mile is the answer
4 0
3 years ago
Which polynomial could have the following graph?
katrin2010 [14]

ANSWER

y=(x+3)(x-1)(x-5)

EXPLANATION

The given polynomial has x-intercepts at x=-3,x=1,x=5

These are called the zeros of this polynomial.

We can use the factor theorem to obtain the polynomial in factored form.

The polynomial in factored form is of the form

y=a(x+3)(x-1)(x-5)

The polynomial rises on the left and keep rising on the right.

This implies that, the 'a' is positive.

Therefore

y=(x+3)(x-1)(x-5)

The correct choice is the first option.

8 0
4 years ago
Other questions:
  • An office building has 8 stories above the ground level and 3 stories under the ground level. How many floors apart are the top
    10·1 answer
  • What's the sum of 2⁄5 and 2⁄4? <br> A. 10/20 B. 6/7 C. 9/10 D. 8/20
    8·1 answer
  • A variable needs to be eliminated to solve the system of equations below. Choose the
    12·1 answer
  • Free ponits 12/0+123= ? hope u have a good day
    6·2 answers
  • Solve the expression in the sketch pad below.<br> Show your work.<br> 3<br> 4<br> +<br> 10.<br> 10.
    14·1 answer
  • What is 2/3 + 1/4 as a fraction
    8·2 answers
  • Need help would appreciate it :D
    15·2 answers
  • A town total allocation for firefighters wages and benefits in a new budget is $600,000. If wages are calculated at $40,000 per
    5·1 answer
  • There are two paths that one can use to go from Sarah’s house to James’ house. One way is to take C street, and the other way re
    13·1 answer
  • I was given this question as part of my homework and I don't get how they came to the answer, please give step by step so I can
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!