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Rashid [163]
1 year ago
6

Find the determinant of this matrix:

Mathematics
2 answers:
Bogdan [553]1 year ago
4 0

Answer:

40

Step-by-step explanation:

\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] = ad-bc

padilas [110]1 year ago
3 0

Answer:

40

Step-by-step explanation:

ad-bc

4(10) - 0(0)

40-0

40

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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
Arlecino [84]

Answer:

The sale price is \$134.75

The expression is \$175(0.77)

Step-by-step explanation:

we know that

The sale price is equal to subtract the discount price from the original price

The discount price is equal to multiply the original price by the percent discount in decimal form

Let

x ----> the sale price

y ---> discount price

23\%=23/100=0.23 ----> percent discount in decimal form

y=\$175(0.23)=\$40.25

x=\$175-y

substitute

x=\$175-\$40.25=\$134.75

therefore

the expression is

175-0.23(175)\\175(1-0.23)\\175(0.77)

3 0
3 years ago
Read 2 more answers
Help and explain thanks!
katen-ka-za [31]

Answer:

120 cm

Step-by-step explanation:

One way to tackle this is by getting another sheet of paper and drawing it out, then counting up the total of the sides. If you draw it, you can see that you're dealing with a rectangle; two sides of length 12 and two sides of length 8. If you don't like drawing or don't want to in this case, another way to get the answer is by knowing one vertex is at (0, 0), so the next vertex (0, 8), would create a side that's exactly 8 units long. Kind of the same, you know from (0, 0), you also have a point (12, 0), so drawing that would create a side that's 12 units long. All in all, to get the perimeter in units, you have 12 + 12 + 8 + 8 = 40.

The problem says it wants the amount of wood in centimeters needed for the perimeter. What we just found was the perimeter in generic units, so if the problem says every "grid square", or unit, is 3 centimeters long, then all you have to do is take our result 40 and multiply it by 3 to get the number of centimeters. Your perimeter in centimeters would be 120 cm.

7 0
3 years ago
You decide that you want to buy a new laptop computer for the start of the new school year. You go to Top Notch Electronics to m
ZanzabumX [31]
Since the tax is 6.25%, make it into a decimal which is .0625 then multiply by 600 to get 37.5, then add it to the 600 and the answer is .... $637.5 Yw (:
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3 years ago
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What is the equation of the line graphed in the xyxyx, y-plane that passes through the point (-4,-5)(−4,−5)left parenthesis, min
goldfiish [28.3K]
The equation of the line through (-4, -5) parallel to 3x-4y=-8 can be written as
  3(x-(-4)) - 4(y-(-5)) = 0
  3x -4y - 8 = 0
  3x - 4y = 8

4 0
3 years ago
BIGGGGGGGGGGGGGGGGG HELP biggggggg. (DUE IN 15 MINUTES)
geniusboy [140]

Answer:

Qestion 1: First option.

Question 2: It's actually false, because we know that Eugene doesn't want to spend any more than 5, so 5 goes where the last x is.

Question 3: Last option.

Question 4: The order it's in seems correct, but I'm not 100% sure.

Step-by-step explanation:

Please don't be mad if it ends up being wrong, I tried. Hope you pass :)

4 0
2 years ago
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