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Dahasolnce [82]
3 years ago
10

Can someone please help me ​

Mathematics
2 answers:
3241004551 [841]3 years ago
7 0
1)-D because the bottom number on the fraction of the mixed number is always the exponent when changing form. if it was 4 and 1/3 it would just be 4^3
swat323 years ago
7 0

Answer: For the First Question

Exact Form:

The 4th option \sqrt[3]{4x^{2} }

And it's Decimal Form:

2.51984209

For the second one it is 64x^{8}

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How to find maximum and minimum values of a parabola
Arturiano [62]

Answer:

Step-by-step explanation:

Finding max/min: There are two ways to find the absolute maximum/minimum value for f(x) = ax2 + bx + c: Put the quadratic in standard form f(x) = a(x − h)2 + k, and the absolute maximum/minimum value is k and it occurs at x = h. If a > 0, then the parabola opens up, and it is a minimum functional value of f.

4 0
2 years ago
the size of a red blood cell is 0.000007m and that of a plant cell is 0.00001265m show that a red blood cell is half of a plant
Readme [11.4K]

ANSWER: The size of a red blood cell IS approximately half the size of a plant cell.

EXPLANATION:

<em>1. We divide the size of the plant cell by 2 to see if half of its size is the size of a red blood cell. </em>

\frac{0.00001265}{2} = 0.000006325 m

Therefore, half of a plant cell's size is 0.000006325 m.

<em>2. We now compare the size of half of the plant cell to the size of the red blood cell.</em>

0.000006325 m and 0.000007 m are very close in size; therefore, the size of a red blood cell IS approximately half of a plant cell.

8 0
2 years ago
Sale Price: On opening day, a new music store offers a 16% discount on all electric guitars. If the regular price on a guitar is
svetoff [14.1K]
This can be done easily in a few ways. One, you could do equivelent fractions as this. 16 percent is the same as 16 over 100, or, 16/100, 100 being the total with an = sign with X over 550, or, X/550. you can multiply 16 by 500 and divide by 100 to get $88. Or you could do it my way, (prefered way). take the $550, divide it by 100, then multiply by 16 and get $88. either way you do this, you take away the $88 from $550 and get the sale price of [Drumroll please...]
<em><u>462 Dollars!</u></em>





6 0
2 years ago
Among U.S. cities with a population of more than 250,000 the mean one-way commute time to work is 24.3 minutes. The longest one-
joja [24]

Answer:

a) 9.18% f the New York City commutes are for less than 29 minutes.

b) 26.39% are between 29 and 36 minutes.

c) 67.55% are between 29 and 44 minutes

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 38.7, \sigma = 7.3

a.

What percent of the New York City commutes are for less than 29 minutes?

This is the pvalue of Z when X = 29.

So

Z = \frac{X - \mu}{\sigma}

Z = \frac{29 - 38.7}{7.3}

Z = -1.33

Z = -1.33 has a pvalue of 0.0918.

So 9.18% f the New York City commutes are for less than 29 minutes.

b.

What percent are between 29 and 36 minutes?

This is the pvalue of Z when X = 36 subtracted by the pvalue of Z when X = 29.

X = 36

Z = \frac{X - \mu}{\sigma}

Z = \frac{36 - 38.7}{7.3}

Z = -0.37

Z = -0.37 has a pvalue of 0.3557.

X = 29

Z = \frac{X - \mu}{\sigma}

Z = \frac{29 - 38.7}{7.3}

Z = -1.33

Z = -1.33 has a pvalue of 0.0918.

So 0.3557 - 0.0918 = 0.2639 = 26.39% are between 29 and 36 minutes.

c.

What percent are between 29 and 44 minutes?

This is the pvalue of Z when X = 44 subtracted by the pvalue of Z when X = 29.

X = 44

Z = \frac{X - \mu}{\sigma}

Z = \frac{44 - 38.7}{7.3}

Z = 0.73

Z = -0.37 has a pvalue of 0.7673.

X = 29

Z = \frac{X - \mu}{\sigma}

Z = \frac{29 - 38.7}{7.3}

Z = -1.33

Z = -1.33 has a pvalue of 0.0918.

So 0.7673 - 0.0918 = 0.6755 = 67.55% are between 29 and 44 minutes

6 0
2 years ago
In the triangle below, determine the value of a.
Anna35 [415]
51sin(47) because 51 is the hypotenuse and a is the opposite so we use sine because sine=opp/hypotenuse therefore sin(47)=a/51 then rearrange the formula to make a the subject the final answer is 37.3 to the nearest 3 significant figures
5 0
2 years ago
Read 2 more answers
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