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
Yuliya22 [10]
3 years ago
15

How can finding the product of 5×700 help you check the product of 5×789

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0
By estimating. 5x700 is 3500. i multiplied the first digits in the equation. 
You might be interested in
Which set of integers does NOT represent the lengths of the sides of a triangle?
Dovator [93]
I thinks it’s B but not 100%
4 0
2 years ago
A researcher is concerned that graduate students get less than the recommended 8 hours of sleep a night. She selects a random sa
dsp73

Answer:

H0 : μ = 8

H1 : μ < 8

Test statistic = - 7.51

conclude that there is statistical significance that student at the school get less than 8 hours of sleep on average.

Step-by-step explanation:

The hypothesis :

H0 : μ = 8

H1 : μ < 8

The test statistic :

(xbar - μ) ÷ (s/√(n))

Sample data :

1.75, 2, 2.25, 2.25, 2.5, 3, 3.5, 3.5, 3.5, 3.75, 4, 4.25, 4.5, 4.5, 4.5, 4.75, 5.25, 5.5, 5.75, 5.75, 5.75, 6, 6, 6, 6.25, 6.25, 6.25, 6.5, 6.5, 6.5, 6.75, 7, 7, 7, 7.5, 7.5, 7.75, 8, 8.25, 8.25, 8.25, 8.5, 8.75, 9, 9

Using calculator :

Sample mean, xbar = 5.71666

Sample standard deviation, s = 2.04

The test statistic :

(5.7166 - 8) ÷ (2.04/√(45))

-2.28 / 0.3041052

= - 7.5085

= - 7.51

Degree of freedom = 45 - 1 = 44

Pvalue(-7.51, 44) = 0.00001

α = 1% = 0.01

Since Pvalue < α ; we reject H0 and conclude that there is statistical significance that student at the school get less than 8 hours of sleep on average.

4 0
2 years ago
Will mark brainliest!!!! Please answer correctly, the questions are in the picture.
zhenek [66]

Answer:

1. A

2. B

Step-by-step explanation:

1. Only option A creates that graph, the other options are either backwards or are on top of each other.

2. Because the two lines are parallel, and do not intersect at all, there will be 0 solutions.

4 0
3 years ago
Помогите пожалуйста пожалуйста я сор делаю ​
inessss [21]
Yeah I’m Russian so x+4 = 911
6 0
2 years ago
Simplify the expression. -2(x + 5) - x + 4
wlad13 [49]

Answer:

−3 x −6

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • I need to multiply these two binomials together: (x-2)(x-1). Please explain how to do them as well. Thanks!
    10·2 answers
  • Et f(x) = 9x − 2 and g(x) = −x + 3. find f(g(x)). −9x − 2 −9x + 5 −9x + 25 −9x + 27
    11·2 answers
  • Bess and Gina earn $45 per week for delivering flowers. Bess worked for x weeks and earned an additional total bonus of $20. Gin
    8·2 answers
  • 3214 divided by 5 step by step will give brainliest
    10·2 answers
  • Help? ill give 10 points.
    11·1 answer
  • If 4^(3x-2)=4^(x+1), then x=
    7·1 answer
  • Can someone help me write and solve an equation to this word problem : A seventh grade class sells gift cards. Each gift card se
    12·1 answer
  • On st patrics day you took note of who was coming into your restruant
    11·1 answer
  • A circular tablecloth covers a table with a diameter of 5 feet. How much trim is needed to put around the edges of the tableclot
    9·1 answer
  • 个,
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!