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3 years ago

How to solving this problem step by step 642×257

Mathematics

2 answers:

ad-work [718]3 years ago

4 0

600 × 200 = 120,000
40 × 50 = 2,000
2 × 7 = 14
120,000 + 2,000 + 14 = 122,014

Elena L [17]3 years ago

3 0

Answer:

16624

Step-by-step explanation:

HOPE THIS HELPED.

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In a genetics experiment on peas, one sample of offspring contained green peas and yellow peas. Based on those results, estimate

dem82 [27]

Complete Question

In a genetic experiment on peas, one sample of offspring contained 436 green peas and 171 yellow peas. Based on those results, estimate the probability of getting an offspring pea that is green. Is the result reasonably close to the value of 3/4 that was expected? The probability of getting a green pea is approximately: Is the probability reasonably close to 3/4?

Answer:

The probability is $P(g) =0.72$

Yes the result is reasonably close

Step-by-step explanation:

From the question we are told that

The number of of green peas is $g = 436$

The number of yellow peas is $y = 171$

The sample size is $n = 171 + 436 = 607$

The probability of getting an offspring pea that is green is mathematically represented as

$P(g) = \frac{g}{n}$

$P(g) = \frac{436}{607}$

$P(g) =0.72$

Comparing $P(g) =0.72$ to $\frac{3}{4} = 0.75$ we see that the result is reasonably close

7 0

4 years ago

A rectangular plot measures 20 ft. By 30ft. A 3ft wide side walk surrounds it. Find the area of the side walk

r-ruslan [8.4K]

Answer:

336 feet²

Step-by-step explanation:

If we have a rectangle that is 30 by 20 feet, that means the area of that rectangle would be 20 × 30 feet squared, which is 600 ft².

If there is a 3 feet sidewalk surrounding it, that means that the end of the sidewalk will extend 3 feet extra around each side of plot. Since there are two ends to one side, that means an extra six feet is added on to each dimension. Therefore, 36 × 26 are the dimensions of the sidewalk+plot. 36 × 26 = 936 ft².

To find the area of the sidewalk itself, we subtract 600 ft² from 936 ft². This gets us with 336 ft².

Hope this helped!

3 0

3 years ago

A radio tower 200 ft. high casts a shadow 75 ft. long. What is the angle of elevation of the sun?

Jet001 [13]

Angle of elevation of the sun: 69 degrees

Step-by-step explanation:

tan(x) = 200/75

x = tan^-1 (200/75)

x = 69 degrees

3 0

3 years ago

Quickly plz 9th grade math

Rainbow [258]

Im pretty sure its -8.7

3 0

3 years ago

Read 2 more answers

Solve the inequality. (hint: isolate the absolute value).<br> 8 + |4v - 7| >17

pickupchik [31]

Answer:

v <−1/2 or v >4

7 0

3 years ago