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
babunello [35]
3 years ago
6

A certain standardized test measures students’ knowledge in English and math. The English and math scores for 10 randomly select

ed students are given in the table. A 2-column table with 10 rows. Column 1 is labeled English (x) with entries 450, 470, 510, 520, 540, 570, 590, 620, 670, 680. Column 2 is labeled Math (y) with entries 490, 480, 500, 580, 550, 540, 610, 590, 620, 650. Using technology, what is the equation for the least-squares regression line?
Mathematics
1 answer:
rodikova [14]3 years ago
6 0

Answer

A.
y=180.2 +0.68x

You might be interested in
HELP!!!!!!!
igomit [66]

Substituting the data points into the model:

f(x)= -x2 + 2x -3

f(-2)=-11

f(0)=-3

f(1)=-2

f(3)=-6

f(5)=-18

So A is the right ans.


7 0
3 years ago
Read 2 more answers
Nathan has a sculpture in the shape of a pyramid. The height of the sculpture is 3 centimeters less than the side length, x, of
uysha [10]
Let
x-----------> <span>the side length of a pyramid square base
h-----------> t</span>he height of the sculpture <span>in the shape of a pyramid

we know that
h=(x-3)
Volume=162 cm</span>³
Volume=x² *(x-3)/3
then
x² *(x-3)/3=162----------> x³-3x²=486----------> x³-3x²-486=0
x³-3x²-486=0-------- <span>this equation can be used to find the length of the sculpture’s base 

using a graph tool-----------> </span>to find the solution
x=9 cm -------------> see the attached figure
h=(x-3)-----> h=9-3--------> h=6 cm

the answer is
<span>the length of the sculpture’s base is 9 cm
</span>the height of the sculpture is 6 cm

8 0
3 years ago
The formulas below are the cost and revenue functions for a company that manufactures and sells small radios. a. Use the formula
Rus_ich [418]

Answer:

a) P(x)=14x-224,000 and b) P(21,000)=70,000.

Step-by-step explanation:

a.) Use the formulas shown to write the company's profit function, P, from producing and selling x radios.

The company's profit is given by its revenue minus the production cost. Then, the profit function P(x) will be given by

  1. P(x)=R(x)-C(x)=46x-(224,000+32x)=14x-224,000.

b.) Find the company's profit if 21,000 radios are produced and sold

To obtain the company's profit we just need to substitute the value given (x=21,000) in the formula 1). Therefore,

P(21,000)=R(21,000)-C(21,000)=14(21,000)-224,000=70,000.

6 0
3 years ago
A gym has soccer balls and basketballs. The ratio of soccer balls to basketballs is 3 : 2. The number of soccer balls at the gym
lutik1710 [3]
How many soccer balls are in the gym?
3 0
3 years ago
Read 2 more answers
I have trouble with the converting
Gnom [1K]
HI,
3 yd= 108 in
24 ft = 8 yd
56 ft= 18 yd 6 ft
12 ft 6 in = 216 in ( im not 100% sure on this one)
i hope this helped you 
7 0
4 years ago
Other questions:
  • Find the length of the missing side. The diagram is not drawn to scale. (Please explain how to get to the answer)
    7·1 answer
  • -3 and 12 find the midpoint?​
    15·1 answer
  • A pattern can be represented by the equationH = 6n-1.
    13·1 answer
  • This type of sampling makes use of geographical blocks or voting districts as a sampling frame in order to cut down a huge popul
    5·1 answer
  • ( √2 - √3 )² =<br> a. 5 - 2√6<br> b. 5 - √6<br> c. 1 - 2√6<br> d. 1 - √2<br> e. 1
    13·1 answer
  • Write the fraction 3/5 as an equivalent fraction with denominator 30
    5·2 answers
  • Which number is a solution of the inequality b&gt;11.3
    13·1 answer
  • Review the graph of function g(x).
    8·1 answer
  • What is the y-intercept of this table? yall pls i need correct answers
    5·1 answer
  • Divide 63.5 ÷ 0.25 round the quotient to the nearest ten-thousandth
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!