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Vika [28.1K]
2 years ago
6

The regression equation, y = 6.5x + 20, is obtained after performing a regression analysis, where x represents the number of hou

rs studied for an exam and y represents the marks on the exam. Is the following statement true or false regarding the analysis above? (2 points)
If the regression square (R^ 2) is 0.01, the number of hours studied is very useful for predicting the exam marks.

50 POINTS HELP
Mathematics
2 answers:
Licemer1 [7]2 years ago
6 0

Answer:

x=10, true

Step-by-step explanation:

y=6.5x+20

true

erastovalidia [21]2 years ago
5 0

Answer:

The correct answer is True

Step-by-step explanation:

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The bagel shop sells special bagel sandwiches for $7 and plain bagels for $2. Last saturday, they sold 100 items and made $385.
zloy xaker [14]

Answer:

Number of special bagel sandwiches = 37

Step-by-step explanation:

Let x,y denote number of special bagel sandwiches and plain bagels respectively.

The bagel shop sold 100 items.

x+y=100\\y=100-x

Also, The bagel shop made $385.

7x+2y=385

Put y=100-x in 7x+2y=385

7x+2(100-x)=385\\7x+200-2x=385\\5x=385-200\\5x=185\\x=\frac{185}{5}\\x=37

So,

Number of special bagel sandwiches = 37

5 0
2 years ago
The Graduate Record Examination and the Miller’s Analogy Test are generally used for _______________.
kicyunya [14]

Answer:

b

Step-by-step explanation:

The graduate record examination is a standard test for the selection process of graduate schools and is a requirement. It tests the abstract thinking is areas of analytical writing, mathematics and vocabulary.

The millers analogy test is used for graduate school admissions and admissions to high IQ institutions. It is a verbal or computer based assessment aiming to test the individuals logical and analytical skills by using partial analogies.

3 0
2 years ago
What are two reasons someone might purposely choose a HIGHER monthly payment?
Allisa [31]
To earn extra money a month
4 0
2 years ago
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What angle does an arc 6.6cm in length subtends at the centre of a circle of radius 14cm. Use π = 22/7)
aniked [119]

Answer:

STEP 1: Find the circumference:

Circumference = 2πr

Circumference = 2π(14) = 28π cm

............................................................................................

STEP 2: Find the length of the arc:

Length of the arc = 36/360 x 28π

Length of the arc = 8.8 cm

.............................................................................................

Answer: The length of the arc is 8.8 cm

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hope it helpssss

Mark it as brilliant answer plzzz

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4 0
2 years ago
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A certain company's main source of income is a mobile app. The company's annual profit (in millions of dollars) as a function of
liberstina [14]

Answer:

x = $3, or x = $11


Step-by-step explanation:

The equation given is P(x)=-2(x-3)(x-11)

where

  • P(x) is the profit, and
  • x is the app price

<u>We want app prices (x's) when profit (P(x)) is 0, so plugging in into the equation:</u>

P(x)=-2(x-3)(x-11)\\0=-2(x-3)(x-11)\\0=(x-3)(x-11)

<em>It means (x-3) = 0  OR  (x-11) = 0</em>

So, x = 3, or 11

7 0
2 years ago
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