4 years ago

How can help me with this pls!!

Mathematics

1 answer:

Crank4 years ago

5 0

Can u take a better picture

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In a quiz, positive marks are given for correct answers and negative marks are given for incorrect answers. If Muskan's scores i

Elanso [62]

Answer:

Step-by-step explanation:

To find his total score in the quiz, we need to add all the scores he had in successive rounds.

This gives a value of; 25 + (-5) + (-10) + 15 + 10 = 25-5-10+15+10 = 25 + 10 = 35

Thus his total score at the end is 35

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3 years ago

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Step-by-step explanation:

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3 years ago

What is the sum of Σ4(0.5) -1, n=1 O S=1.5 O S = 2 O S = 4.5 O S = 8

slamgirl [31]

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Step-by-step explanation:

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3 years ago

Solve the inequality for x. Show each step of the solution. 12X>9(2X-3)-15

agasfer [191]

12x > 18x - 27 - 15
12x > 18x - 42
12x - 18x > -42
-6x > -42
x < -42/-6
two negatives make a positive so now its x < 42/6
Lastly divide 42/6 so it can equal 7

Answer: X < 7.

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4 years ago

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27^x = 9^x − 4 Question 1 options: x = 8 x = 4 x = −4 x = −8

Mariulka [41]

Answer:

x = -8

Step-by-step explanation:

Given the equation:

$27^x=9^{x-4}$

Note that

$27=3^3\\ \\9=3^2,$

then

$27^x=(3^3)^x=3^{3x}\\ \\9^{x-4}=(3^2)^{x-4}=3^{2(x-4)}$

Rewrite the equation as

$3^{3x}=3^{2(x-4)},$

then

$3x=2(x-4)\\ \\3x=2x-8\\ \\3x-2x=-8\\ \\x=-8$

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3 years ago