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Aleonysh [2.5K]
3 years ago
11

Solve this equation (21-15÷5)-(75÷5×2)

Mathematics
1 answer:
harkovskaia [24]3 years ago
4 0

Answer:

-12

Step-by-step explanation:

(21-15/5)-(75/5x2)

=(21-3)-(15x2)

=18-30

=-12

(Following the order of PEMDAS)

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50 pts (and will mark brainliest)
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Answer:

c. 21/200

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Plzz help me to solve this qns please
tatiyna

9514 1404 393

Answer:

  ₹14000

Step-by-step explanation:

Let c represent the cost price, and m represent the marked price.

  c × (1 +40%) = m

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Using the first expression for m, the second equation becomes ...

  1.40c×0.85 -c = ₹1900

  0.19c = ₹1900

  c = ₹1900/0.19 = ₹10000

Then the marked price was ...

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The selling price was ₹11900.

7 0
4 years ago
Find the x-intercept and y-intercept of the graph of of the equation: y=8-3x
soldier1979 [14.2K]

Answer:

x-intercept: x = 8/3

y-intercept: y = 8

Step-by-step explanation:

x-intercept

y = 8 - 3x

0 = 8 - 3x

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x =  \frac{8}{3}

••••

y-intercept

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Answer: 6

Step-by-step explanation:

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4 0
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Only the smartest person in their math class can help me with this difficult problem!!!
vodomira [7]

Step-by-step explanation:

\tt{(5 {x}^{3}  - 3x + 6) - (2 {x}^{2}  - 4x + 8)}

While subtracting , the sign of each term of second expression changes & remove the parentheses.

⟶ \tt{5 {x}^{3}  - 3x + 6 - 2 {x}^{2}  + 4x - 8}

Combine like terms. Like terms are those which have the same base. Only coefficients of like terms can be added or subtracted.

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⟶ \tt{5 {x}^{3}  + x - 2 - 2 {x}^{2} }

In standard from , the expression should be written in such a way that the power of variables goes from highest to lowest.

\red{ \boxed{ \boxed{ \tt{Our \: final \: answer :  \boxed{ \tt{5 {x}^{3}  - 2 {x}^{2}  + x - 2}}}}}}

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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6 0
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