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3 years ago

5

Ms. Smith allows her students to choose the mean, median, or mode of their set of test scores to be their final grade. Which mea

sure of center should Erica use to get the highest average if her scores are 80, 90, 70, 60, 90?

1 answer:

elena-s [515]3 years ago

6 0

Answer:

Mode

Step-by-step explanation:

because 90 is the grade that shows up the most!

I hope I helped :)

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To paint interior walls, a person charges 50¢ per square foot plus the cost of the paint. For a recent job, the paint cost $1

zubka84 [21]

Answer: $750\ ft^2$

Step-by-step explanation:

Given

Rate of painting 50¢ per square foot

Cost of paint is $100

If the total bill is $475

We can write,

$\Rightarrow 475=100+0.5\times x\quad [x=\text{area in square foot}]\\\Rightarrow 375=0.5x\\\Rightarrow x=750\ ft^2$

Thus, $750\ ft^2$ must be painted.

3 0

3 years ago

GUYS I REALLY NEED AN ANSWER TO THIS AND CAN'T GET IT WRONG AND I KEEP GETTING SKEWED ANSWERS like A C D I really need a solid a

maksim [4K]

Answer:

C

Hope this helped!!

4 0

3 years ago

Which of the following inequalities is not true?

Alex73 [517]

Answer:

........-9| < |9| is not true

7 0

3 years ago

Jacqui is selling scented candles as a fundraiser for a school field trip. Each cinnamon candle sells for $3.50 and each chocola

AlexFokin [52]

Answer:

Number of cinammon = 12

Number of chocolate = 21

Step-by-step explanation:

Given that:

Cost of Cinnamon candle , c = $3.50

Cost of chocolate candle , d = $2.50

Total amount raised, T = $94.50

d = 2c - 3

Total amount = (cost of Cinnamon * number sold) + (cost of chocolate * number sold)

94.50 = (3.50 * c) + (2.50 * (2c-3))

94.50 = 3.50c + 5c - 7.5

94.50 = 8.50c - 7.5

94.50 + 7.5 = 8.50c

102 = 8.50c

c = 102 / 8.50

c = 12

d = 2c - 3

d = 2(12) - 3

d = 24 - 3

d = 21

3 0

3 years ago

What is two numbers that multiply to 24 but add to 25?

lesya [120]

X, y - the numbers

$xy=24 \\
x+y=25 \\ \\
\hbox{solve the second equation for y:} \\
x+y=25 \\
y=25-x \\ \\
\hbox{substitute 25-x for y in the first equation:} \\
x(25-x)=24 \\
25x-x^2=24 \\
-x^2+25x-24=0 \\
-x^2+24x+x-24=0 \\
-x(x-24)+1(x-24)=0 \\
(-x+1)(x-24)=0 \\
-x+1=0 \ \lor \ x-24=0 \\
x=1 \ \lor \ x=24 \\ \\
y=25-x \\
y=25-1 \ \lor \ y=25-24 \\
y=24 \ \lor \ y=1$

The numbers are 1 and 24.

6 0

4 years ago