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
user100 [1]
3 years ago
7

Alejandra solved a math problem by doing the steps below in the order shown.

Mathematics
1 answer:
scZoUnD [109]3 years ago
5 0

Answer:

D

Step-by-step explanation:

You might be interested in
Cody is selling chocolate and white chocolate candy bars for a school fundraiser. 30% of the candy bars sold have been white cho
aniked [119]
24/.30 is how you would get your answer and 80
8 0
3 years ago
What is the equation of the line that passes between (-1, -7) and has a slope of 2
cricket20 [7]

Answer:

y = 2x - 5

Step-by-step explanation:

3 0
3 years ago
The mean amount purchased by a typical customer at Churchill’s Grocery Store is $23.50, with a standard deviation of $5.00. Assu
m_a_m_a [10]

Answer: 0.0170

Step-by-step explanation:

Given : The mean amount purchased by a typical customer at Churchill’s Grocery Store is $23.50, with a standard deviation of $5.00.

i.e. \mu=23.50

\sigma=5

We assume the distribution of amounts purchased follows the normal distribution.

Sample size : n=50

Let \overline{x} be the sample mean.

Formula : z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

Then, the probability that the sample mean is at least $25.00 will be :-

P(\overline{x}\geq\25.00)=P(\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\geq\dfrac{25-23.50}{\dfrac{5}{\sqrt{50}}})\\\\=P(z\geq2.12)\\\\=1-P(z

Hence, the likelihood the sample mean is at least $25.00= 0.0170

5 0
3 years ago
A line has a slope of –5 and a y-intercept of (0, 3). What is the equation of the line that is perpendicular to the first line a
neonofarm [45]
Slope-intercept form:
y=mx+b
m=slope
b=y-intercept

Data of the first line:
m=-5
b=y-intercept=3  (y-intercept=it is the value of "y" when x=0)

y=-5x+3

A line perpendicular to the line y=mx+b will have the following slope:
m`=-1/m

Therefore: the line perpendicular to the line y=-5x+3 will have the following slope:
m´=-1/(-5)=1/5

Point-slope form of a line: we need a point (x₀,y₀) and the slope (m):
y-y₀=m(x-x₀)

We know, the slope (m=1/5) and we have a point (3,2) therefore:
y-y₀=m(x-x₀)
y-2=1/5(x-3)     (point-slope form)
y-2=(1/5)x-3/5
y=(1/5)x-3/5+2
y=(1/5)x+7/5    (slope-intercept form)

Answer: the line perpendicular to the first line will be: y=(1/5)x+7/5



3 0
3 years ago
Read 2 more answers
Complete the sentence. the midpoint btween 2 and 10 is
kvv77 [185]

Answer:

5

Step-by-step explanation:

Divide 10 by 2, the result of which is 5, this is the y coordinate of the midpoint

8 0
3 years ago
Read 2 more answers
Other questions:
  • A manufacturer makes golf balls whose weights average 1.62 ounces, with a standard deviation of 0.05 ounces. Estimate the probab
    12·1 answer
  • ________ refers to a sense of common cultural identity, while ________ refers to a cultural understanding about physical differe
    12·2 answers
  • What does n(t) equal?
    9·2 answers
  • James walked 15 blocks. she stopped at the store 3/5 of the way into her walk. how many blocks did she walk to the store? ​
    5·2 answers
  • HELPPPP PLZZZ!!!! I need this done soon
    13·1 answer
  • Consider the line -6x-2y=-4.
    9·1 answer
  • In a department store a desk costs £120. In a sale the price in reduced by 10%. How much is the desk reduced by
    7·1 answer
  • Evaluate the expression \dfrac{5\cdot x^3}{x^2} x 2 5⋅x 3 ​ start fraction, 5, dot, x, cubed, divided by, x, squared, end fracti
    13·1 answer
  • Been posting this question for days now (Q5) ....pls I beg of you if you don't know don't reply ​
    15·1 answer
  • Palawbhehrht awnser yes or mo
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!