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tresset_1 [31]
3 years ago
10

Tony’s Electronics is marking down the price of a TV 23% from the original price of $175. Which expression can be used to find t

he sale price.
175 + 0.23(175)
23 + 1.75(23)
175 – 0.23(175)
23 – 1.75(23)
Mathematics
2 answers:
mariarad [96]3 years ago
6 0

Answer: the correct answer is 175 - 0.23(175)

Step-by-step explanation:

ankoles [38]3 years ago
4 0

Answer:

C: 175 – 0.23(175)

Step-by-step explanation:

Hope this helps

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In a factory a metal rod 49 metre long is divided into metre pieces. How many pieces can be made from each rod?
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If you would like to know how many pieces can be made from each rod, you can calculate this using the following steps:

49 metre long / 1 metre = 49 / 1 = 49 pieces

The correct result would be 49 pieces.
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A group of first grade students were asked to name their favorite color. The responses are shown in the following frequency tabl
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Answer:

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7 0
3 years ago
Help me and you get 100 points and Brainliest
OlgaM077 [116]

hey someone else has already answered this!

a. To find the least squares regression equation for a group of (x,y) points:

Step 1: For each point(x,y), we need to calculate x² and xy first.

Step 2: Sum all x, y, x² and xy, which gives us Σx, Σy, Σx² and Σxy

Step 3: Calculate Slope m: m = (NΣxy − Σx Σy)/ N(Σx²) − (Σx)² , here N is the number of data.

Step 4: Calculate Intercept b: b = Σy − m(Σx)/ N

Step 5: Assemble the equation as y= mx+b

Here, we have ∑x = 120, ∑y= 1379, ∑x²= 919.5, ∑xy= 10466 and N= 16

So, m= (NΣxy − Σx Σy)/ N(Σx²) − (Σx)²

=

=

=  

= 6.33

and b = Σy − m(Σx)/ N

=

=

=

= 38.71

So, the least squares regression equation is : y= mx+b ⇒ y= 6.33x +38.71

b. When x= 8, then y= (6.33×8)+38.71 = 50.64 + 38.71 =89.35

The approximate test score of a student who sleeps an average of 8 h a night is 89.35%

EVERYTHING IS FROM sicista on brainly!

8 0
3 years ago
Read 2 more answers
PLS HELP WILL MARK BRAINLIEST
Anuta_ua [19.1K]
It’s 112:8 I’m pretty sure:)
6 0
3 years ago
Solve the equation using square roots. x2 + 10 = 9
Oksana_A [137]
x^2 + 10 = 9

Subtract 10 from both sides.

x^2 = -1

Since the square of a number, x, equals a negative number, -1, the answer cannot be a real number because the square of a real number is always non-negative. Therefore, there is no real number solution to this equation.

Answer: <span>B. no real number solutions</span>
5 0
3 years ago
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