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3 years ago

Can anyone pls help me if not its ok:)

Mathematics

1 answer:

11Alexandr11 [23.1K]3 years ago

4 0

Answer:

Its A, or -12. It's really the only one that makes the most sense. Please tell me if im wrong!

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Anyone know how to do these questions

zhenek [66]

75% because each section is 25%, so if you add 25 from each section, you get 75%

3 0

3 years ago

The distance from your house to the ice cream shop is 12 miles. Your best friend’s house is on the segment between your house an

Rus_ich [418]

Your house Friend's House Ice cream house
Ф⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒12 miles
Ф⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒ 3 miles
Ф⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒ ?

The distance of your house to your friend's house is 9 miles.

12 miles - 3 miles = 9 miles.

7 0

4 years ago

Van uses 3/4 of a gallon of gas every 15 miles. How much gas does it use every 60 miles?

vredina [299]

Answer:

3 gallons

Step-by-step explanation:

$\frac{3}{4} * 4 = \frac{12}{4} = 3$

3 0

3 years ago

For what values of b are the vectors [−9, b, 5] and [b, b2, b] orthogonal? (Enter your answers as a comma-separated list. If an

aivan3 [116]

Answer:

The values of b are [-2,0,2] for which the vectors are orthogonal.

Step-by-step explanation:

Given:

Vector [-9,b,5] and Vector [b,b^2,b].

According to the question:

Both the above vectors are orthogonal we have to find the value of b.

Orthogonal vectors:

Are the vectors which, are at right angles to each other.
Meaning they are perpendicular to each other.
And their,Dot product is equivalent to zero.

So we have to calculate by dot product and make it equal to zero and then have to solve the b values.

Dot Product:

For vectors a and b where $a=(a_1,a_2,a_3)$ and $b=(b_1,b_2,b_3)$ the dot product is $(a.b)=(a_1b_1+a_2b_2+a_3b_3)$ .

Solving.

⇒ $(-9,b,5).(b,b^2,b)$

⇒ $(-9b+b^3+5b) =0$

⇒ $(b^3-4b)=0$

⇒ $b(b^2-4)=0$ <em>...taking b as common.</em>

⇒ $b(b^2-2^2)=0$

⇒ $b(b-2)(b+2)=0$ <em>...using algebraic identity,</em> $a^2-b^2=(a-b)(a+b)$ .

⇒ Equating with zero individually.

⇒ $b=-2,0,2$

So the values of b are [-2,0,2] for which the given vectors are orthogonal.

8 0

3 years ago

William has a 3-point shooting average of 80%. He wants to determine the number of points he can expect to score if he takes 5 s

topjm [15]

Answer:

B. Generate 5 random integers from 1 to 10 and see how many times the numbers 1 to 8 are generated.

Step-by-step explanation:

William wants to simulate 5 shots with an 80% chance each shot. Let's see what is each option simulate

This option is wrong. Since you generate 8 different possibilities(1-8), the chance for each is 1/8= 12.5%. The chance for either 3 and 5 is 25% and it's far from 80%

This option is true. You generate 5 numbers which represent the 5 shots. Since you generate 10 different possibilities(1-10), the chance for each is 1/10= 10%. The chance for 1 to 8 is 80% .

There is no information about the chance for the dart score, so this option won't simulate the situation accurately.

This option is wrong. You generate 3 numbers which represent the 3 shots instead of 5.

5 0

3 years ago

Can anyone pls help me if not its ok:)​

Can anyone pls help me if not its ok:)