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vredina [299]
3 years ago
10

Rosa has blue cubes with a edge length of 55 mm and red cubes with a edge length of 45 mm. She wants to stack up the cubes in tw

o columns, one of blue cubes and the other one of red cubes, until both columns are of equal height. What is the least number of each color cubes that she needs to make this possible?
Mathematics
1 answer:
VMariaS [17]3 years ago
3 0

Answer:

?

Step-by-step explanation:

My challenge for brainly plus.

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Evaluate the function requested. Write your answer as a fraction in lowest terms. find cos B
Flura [38]

Answer:

what? please give more details

Step-by-step explanation:

6 0
2 years ago
A manufacturer makes golf balls whose weights average 1.62 ounces, with a standard deviation of 0.05 ounces. Estimate the probab
saul85 [17]

Answer:

P(-1 < z < 1)  = 0.3174

Step-by-step explanation:

Mean (μ) = 1.62 ounces

Standard Deviation (σ) = 0.05

No of balls (sample size n) = 100

X = weight of a ball

Weight of a group of 100 balls must lie in the range 162 ± 0.5 ounces i.e. weight of a single ball will be 162/100 ± 0.5/100 ounces = 1.62 ± 0.005 ounces.

So, we need to find the probability P (1.615 < X < 1.625). We will use the central limit theorem.

z = (Χ' - μ)/(σ/\sqrt{n})

P (1.615 < X < 1.625) = (\frac{1.615 - 1.62}{0.05/\sqrt{100} } < (Χ - μ)/(σ/\sqrt{n}) < \frac{1.625 - 1.62}{0.05/\sqrt{100} })

                                = (-1 < z < 1)

We need to find the probability of P (-1 < z < 1) by looking at the Normal Distribution Probability Table.

In order to make our working simpler, we need to break P (-1 < z < 1) into two parts: P(z < 1) and P(z > -1)

The probability for areas under the normal curve are given for P(z>X) so we can directly find the probability of P (z > -1) by referring to the normal probability table.

P(z > -1) = 0.1587

We can calculate P(z < 1) by subtracting P(z >1) from the total probability (i.e. 1). P(z >1) can be obtained from the normal probability table.

P(z < 1) = 1 - 0.8413 = 0.1587

By adding the two probabilities together, we get:

P(-1 < z < 1) = P(z < 1) + P (z > -1)

                   = 0.1587 + 0.1587

P(-1 < z < 1)  = 0.3174

6 0
3 years ago
Help!! I need help!<br>​
Tasya [4]

Answer:

C

Step-by-step explanation:

-5x-49>113

    +49  +49

———————-

-5x>162

—-   ——

-5     -5

x<32.4

6 0
3 years ago
What is the value of y in the solution to the system of equations? One-thirdx + One-fourthy = 1 2x – 3y = –30 –8 –3 3 8
Neporo4naja [7]

Step-by-step explanation:

1<u>/</u><u>3</u><u>x</u><u>+</u><u>1</u><u>/</u><u>4</u><u>0</u><u> </u><u>=</u><u>1</u><u> </u><u>2x – 3y = –30 –8 –3 3 8</u><u> </u><u> </u>

4 1
3 years ago
Read 2 more answers
If x= 6 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the
denpristay [2]

Answer:

discriminant is zero (0)

Step-by-step explanation:

Actually, you have a double root here:  {6, 6}:  "two real, equal roots."  That tells us immediately that the value of the discriminant was zero (0).

3 0
3 years ago
Read 2 more answers
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