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3 years ago

POSSIBLE POINTS: 5

Mathematics

1 answer:

Bumek [7]3 years ago

4 0

Answer:

176/231

Step-by-step explanation:

88 blue marbles, 55 green marbles, and 88 red marbles =231 marbles

P (blue or red marble) = number of red or blue/ total

= 88+88 / 231

=176/231

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Which three steps are correct when solving this quadratic equation by completing the square? X^2-10x=39

sergey [27]

Step-by-step explanation:

Any answer that involes,

Step 1: Complete the Square

${x}^{2} - 10x = 39$

$( \frac{ - 10}{2} ) {}^{2} = 25$

${x}^{2} - 10x + 25 = 64$

Step 2: Turn the left side into a binomial

$(x - 5) {}^{2} = 64$

Step 3: Solve for x.

$x - 5 = + - 8$

$x - 5 = 8$

$x = 13$

$x - 5 = - 8$

$x = - 3$

X=-3 or X=13

4 0

3 years ago

The school tuck-shop has milk in 600 mL and 1 litre cartons. If there are 54 cartons and

Svet_ta [14]

Answer:

Step-by-step explanation:

54 x 40 = 2160 L

2160 ÷ 600 = 3.6 = 4

4 0

2 years ago

Estimate $0.89 ×14 find each product

viva [34]

The product of $0.89 x 14 equals 12.46

5 0

3 years ago

C) If the spinner is spun another 1000 times,

trapecia [35]

Answer:

130

Step-by-step explanation:

Probability of green:

P= 39/300

Number of attempts:

1000

Expected number of landing on green:

Expected frequency = probability × number of trials

1000*39/300 = 130 times

Answer: 130 times

7 0

4 years ago

The population of city Z was 420,000 in the year 2000. If the population is projected to grow at a constant rate of 2 percent pe

love history [14]

Answer:

760772

Step-by-step explanation:

Given that the population of city Z was 420,000 in the year 2000.

The population is projected to grow at a constant rate of 2 percent per year,

We have to find the closest to the projected population of city Z in the year 2030

Since growing at 2% per year treating 2000 as year 0 we can say

$P(t)= 420000(1+0.02)^t$ where t is the no of years lapsed after 2000.

So at the year 2030, t = 30

Population at th eyear 2030

= $P(30) = 420000(1.02)^{30} \\=760771.86\\=760772$

the projected population of city Z in the year 2030 is 760772

4 0

4 years ago