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
alekssr [168]
4 years ago
8

If vector u = <-3.5, -1.5> and vector v = <-1.25, 2.25>, which graph shows the resulting vector for 2v − u?

Mathematics
1 answer:
Sedaia [141]4 years ago
8 0

Answer:

D

Step-by-step explanation:

We know that vector addition is scalar addition.

Given vectors are u = <-3.5, -1.5> and v = <-1.25, 2.25>

2v = < -2.5, 4.5>

2v - u = < -2.5, 4.5> - <-3.5, -1.5> = < -2.5 - (-3.5) , 4.5 -(-1.5) >

2v-u = < 1 , 6 >

This vector is basically i + 6j which is drawn in option D

You might be interested in
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for aluminum alloy sheets of a parti
neonofarm [45]

Answer:

a1) \mu_{\bar{X}} = 70

a2)\sigma_{\bar{X}} = 0.4

b1) \mu_{\bar{X}} = 70

b2) \sigma_{\bar{X}} = 0.2

c) X is more likely to be within 1 GPa of 70 GPa in the random sample of part b because of the largeness in sample size and less scattering of data

Step-by-step explanation:

Mean value, \mu = 70

Standard deviation, \sigma = 1.6

a1) sample size, n = 16

Mean of the sampling distribution of the sample mean = mean value, i.e.

\mu_{\bar{X}} = \mu\\\mu_{\bar{X}} = 70

a2) The standard deviation of the sampling distribution of the sample mean

\sigma_{\bar{X}} = \frac{\sigma}{\sqrt{n} } \\\sigma_{\bar{X}} = \frac{1.6}{\sqrt{16} }\\\sigma_{\bar{X}} = 0.4

b1) For sample size, n = 64

Mean of the sampling distribution of the sample mean = mean value, i.e.

\mu_{\bar{X}} = \mu\\\mu_{\bar{X}} = 70

a2) The standard deviation of the sampling distribution of the sample mean

\sigma_{\bar{X}} = \frac{\sigma}{\sqrt{n} } \\\sigma_{\bar{X}} = \frac{1.6}{\sqrt{64} }\\\sigma_{\bar{X}} = 0.2

c) X is more likely to be within 1 GPa of 70 GPa in the random sample of part b because it has a larger sample size, hence a decrease in the variability. This makes us easily determine the position of the sample around the population mean

5 0
4 years ago
Need help asap for test
alex41 [277]

Answer:

a=4 and b=-1

Step-by-step explanation:

2(4)+3(-1)= 5

6 0
3 years ago
ok i have 2 questions first one, is 12.01 larger than 11.999? second question is 0.57 equal to 0.573?
myrzilka [38]

Answer:

1. yes 2. no

Step-by-step explanation:

for #2 it would have to be 0.57 and 0.570

8 0
3 years ago
Read 2 more answers
A college student has $4,032 he earned from working during the summer. If he earned $288 per week, how many weeks did he work? C
lora16 [44]

Answer:14 weeks

Step-by-step explanation:288 x 14 = 4032

5 0
3 years ago
Helpppppppppppppppppppppppppp
dexar [7]
We have 
y=x²+16
x=(+/-)√(y-16)
<span>exchange x by y and I get the inverse function
</span>the inverse is --------------- > y=(+/-)√(x-16)

the answer is y=(+/-)√(x-16)


3 0
3 years ago
Other questions:
  • The standard form of the equation of a circle is (x−3)2+(y−1)2=16.
    10·2 answers
  • What value is a discontinuity of x^2 + 5x + 2 / x^2 + 2x - 35?
    9·1 answer
  • Jackson flipped a coin ten times. He flipped heads 4 times and tails 6 times. What is the experimental probability that Jackson
    9·1 answer
  • What’s 5*672 x 972*263
    14·1 answer
  • 4. If x=2, which equation is true?<br> A. 3(8-X)=18<br> B. 3(9-x)=30<br> C. 2(x-8)=24<br> D. 4x-8=20
    13·2 answers
  • If the perimeter of a regular polygon is 50 inches and the area of the regular polygon is 300 square inches what is the measurem
    12·1 answer
  • Select the correct answer
    13·1 answer
  • What is the value of four and 3
    11·2 answers
  • You are Miguel Cervantes de Navas y Colon, captain in the Royal Spanish
    15·2 answers
  • A company that makes cola drinks states that the mean caffeine content per 12-ounce bottle of cola 40 milligrams. You want to te
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!