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2 years ago

I need these asap......

Mathematics

1 answer:

Illusion [34]2 years ago

8 0

Answer:

3. ( 1.5 × 10⁵ )

1.5 × (10×10×10×10×10)=100000

1.5 × 100000= 150000

2. ( 3 × 10⁴ ) ( 7.2 × 10²)

3× (10×10×10×10) × ( 7.2 × (10×10)

(3× 10000) (7.2 × 100)

3× 10000=30000 7.2 × 100= 720

30000×720= 21 600 000

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What would have been the elevation in the valley if he had started at an elevation 300 meters below sea level?

Masja [62]

Answer: -300 meters

Step-by-step explanation: If he started from 0 (sea level) and went 300 meters under, meaning 0-300=-300 meters.

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2 years ago

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In a set of 25 aluminum castings, four castings are defective (D), and the remaining twenty-one are good (G). A quality control

lianna [129]

Answer:

The sample space for selecting the group to test contains 2,300 elementary events.

Step-by-step explanation:

There are a total of N = 25 aluminum castings.

Of these 25 aluminum castings, n₁ = 4 castings are defective (D) and n₂ = 21 are good (G).

It is provided that a quality control inspector randomly selects three of the twenty-five castings without replacement to test.

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!(n-k)!}$

Compute the number of samples that are possible as follows:

${25\choose 3}=\frac{25!}{3!\times (25-3)!}$

$=\frac{25\times 24\times 23\times 22!}{3!\times 22!}\\\\=\frac{25\times 24\times 23}{3\times 2\times 1}\\\\=2300$

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3 years ago

Write an exponential function in the form y=ab^x that goes through the point (0,17) and (6,1088)

alexandr402 [8]

Answer:

y = 17(2)^x

Step-by-step explanation:

If the graph of y = ab^x goes through (0, 17), then

17 = ab*0, or a = 17

Then the function is y = ab^x with a = 17, or

y = 17*b^x and we must find b.

If the graph of y = 17*b^x also goes through (6, 1088), then the following must be true: 1088 = 17*b^6

which reduces to 64 = b^6

Taking the sixth root of both sides, we get 64^(1/6) = b, and so b = 2

Then the desired exponential function is

y = 17(2)^x

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3 years ago

Can you help me plzs

Jlenok [28]

Answer:

164

Step-by-step explanation:

2x+7+5x+12=180

7x+19=180

7x+180-19

7x=171

---- ----

7 7

x=164

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3 years ago

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The product of 5 and m squared, increased by the sum of the square of m and 5

weqwewe [10]

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3 years ago