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kap26 [50]
3 years ago
11

in a class test containing 10 questions 5 marks are awarded for every correct answers and -2 for every incorrect answer and 0 fo

r questions not attempted Reshma gets 5 correct answers and 5 incorrect answers, what is her score?
Mathematics
1 answer:
Nookie1986 [14]3 years ago
4 0

Answer:

15

Step-by-step explanation:

marks for correct answers = 5×5= 25

marks lost for incorrect answers = 5 ×2= 10 or -10 gained

so total marks = 25 +(-10) = 15

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Not sure if this is what you need

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A function f(x) s defined as f(x)=-8x^2. What is f(-3)?
Semenov [28]
f(-3)=-8\cdot(-3)^2\\
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5 0
3 years ago
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Stephen makes wooden shelves for his room he starts with a board that is 20 feet long.Stephen wants to make the shelves 3/4 foot
jek_recluse [69]

The number of shelves stephen can make is approximately 27

<h3><u>Solution:</u></h3>

Given that Stephen makes wooden shelves for his room

Stephen wants to make the shelves 3/4 foot long

He starts with a board that is 20 feet long

To find: number of shelves he can make

So the number of shelves stephen can make can make is found out by dividing 20 feet long board by 3/4 foot long

\text {number of shelves }=\frac{\text { total length of board stephen has }}{\text { length of each board }}

\text {number of shelves }=\frac{20}{3 / 4}=\frac{20}{0.75}=26.6

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3 0
3 years ago
HELP me plzzzz i need to finish this
trapecia [35]

Answer:

725.95

Step-by-step explanation:

If you multiply 129.95*5. You get 649.75, but you have to add 76.20 from the delivery and you get 725.95

Hope this helps =)

4 0
3 years ago
Calculate the percent change if a city that used to produce 2050 kilowatt hours has reduced their consumption to 1125 kilowatt h
Crazy boy [7]

The percent change if a city that used to produce 2050 kilowatt hours has reduced their consumption to 1125 kilowatt hours is 45.122% decrease.

<h3>What is percentage change?</h3>

Percent increase and percent decrease are measures of percent change, which is the extent to which a variable gains or loses intensity, magnitude, extent, or value.

we know,

% change = (final- initial) / initial * 100

=(1125-2050)/1125 *100

=45.122%

Hence, percentage change be 45.122% decrease.

Learn more about percentage change here:

brainly.com/question/14656289

#SPJ1

5 0
2 years ago
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