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
Sergeeva-Olga [200]
3 years ago
15

NORMAL DISTRIBUTIONS AID?

Mathematics
1 answer:
kykrilka [37]3 years ago
3 0

Those are the ranges for one tandard deviation below the mean and one standard deviation above the mean, and we know that 68% of the data falls in that range, so the probability that a randomly chosen worker makes that much is 68%

You might be interested in
Arrange the following fractions in increasing order. 1/8, 2/10, 11/12, 3/4
Nitella [24]
Hlo mate :-

Solution :-

☆ 1/8 > 2/10 > 3/4 > 11/12 ans
4 0
3 years ago
What value of x make the equation 24-(3x - 9)-6= -2(4x - 10+ 5x + 7 true?
maksim [4K]

Answer:

x = 0

Step-by-step explanation:

24 - (3x - 9) - 6 = -2(4x - 10) + 5x + 7

solve the brackets by using the distribute property:

1(3x - 9) = 3x - 9

-2(2x - 10) = -8x + 20

rewrite the equation:

24 - 3x - 9 - 6 = -8x + 20 + 5x + 7

combine like therms:

27 - 3x = -3x + 27

subtract 27 from both sides:

27 - 3x - 27 = -3x + 27 - 27

- 3x = -3x

add x to both sides of the equation:

-3x + 3x = -3x + 3x

x = x or 0 = 0

to check, substitute 0 for x

24 - (3(0) - 9) - 6 = -2(4(0) - 10) + 5(0) + 7

anything times 0 is 0

24 - (0 - 9) - 6 = -2(0 - 10) + 0 + 7

solve:

24 + 9 - 6 = 0 + 20 + 0 + 7

27 = 27

7 0
3 years ago
Mary and Sam need to plant 198 trees. If Mary can plant 12 trees in 5 hours and Sam can plant 14 trees in 7 hours
34kurt

Answer:

Step-by-step explanation:

so you wanna first add the hours

12

then add the number of trees painted in that number of hours

26

do 198 divided by 26

7.62( rounded to the nearest hundredth)

then take that product and multiply it by 12

91( rounded to the nearest one)

tha'ts your answer: 91 days

4 0
3 years ago
Identify the vertex of y = x2 + 4x + 5.
Xelga [282]
ANSWER

The vertex is (-2,1)

EXPLANATION

We want to find the vertex of

y = {x}^{2} + 4x + 5

We complete the square to obtain,

y = {x}^{2} + 4x + {(2})^{2} - {(2})^{2} + 5

The first three terms forms a perfect square trinomial.

y = {(x + 2})^{2} - 4 + 5

The vertex form is

y = {(x + 2})^{2} + 1


This equation is in the form;

y = a{(x -h})^{2} + k


where (h,k)=(-2,1) is the vertex.
4 0
3 years ago
Read 2 more answers
20 POINTS! Please help, best answer will recessive brainliest answer points as well as 5 stars and a thank you. :)
Vitek1552 [10]

Answer:

3): 14

Step-by-step explanation:

The problem states that ABC and DEF are similar. Therefore, dsue to similar triangles, we have 7x/7=4/x, so x^2=4. Therefore, x=2 (because x cannot be negative). Therefore, AB = 7x = 7*2=14

6 0
3 years ago
Other questions:
  • Ali is quite the baseball player. Forty two percent of her hits are home runs if Ali hit 150 balls last season how many of those
    10·1 answer
  • David printed 24 photos in eight minutes. How many photos did he print per minute
    6·2 answers
  • What is -(c-4)=5?so what is 'c'
    6·2 answers
  • The net of a square pyramid is show: what is the surface area of the figure? 20 points answer
    15·1 answer
  • Replace? with =, >, or < to make the statement true. 18 ÷ 6 + 3? 6 + 12 ÷ 3
    7·1 answer
  • Marissa created a graph to show her hair growth since her last haircut. Which table represents the same relationship?
    6·2 answers
  • Jerome uses the formula, P = 2DB, to find approximate six month premium when his driver risk factor, d, is 1.02 and the basic si
    15·1 answer
  • The ratio of the length to the breadth to the length of a tin is 5:4:3. The bottom area of the tin is 80 square inches. What is
    12·1 answer
  • A computer store bought a program at a cost of $20 and sold it at a selling price of $22 find the percent markup
    5·1 answer
  • Find the equation of tangent and normal to the circle 2x² + 2y² -7x +4y - 3= 0 at (3/2, 3)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!