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Inga [223]
3 years ago
15

(-10/7) (8/3) is it positive or negative

Mathematics
1 answer:
Step2247 [10]3 years ago
7 0
The answer is negative

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The standard configuration for an Arizona license plate is 3 digits (0 - 9) followed by 3 letters (of 26). If you can not repeat
Anna71 [15]

Answer:

11232000 plates can be made.

Step-by-step explanation:

The order of the digits and of the letters is important. For example, ABC is a different configuration than CBA. So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

P_{(n,x)} = \frac{n!}{(n-x)!}

In this question:

3 digits from a set of 10(there are 10 digits from 0 to 9).

3 letters from a set of 26. So

Total:

T = P_{(10,3)} \times P_{(26,3)} = \frac{10!}{(10-3)!} \times \frac{26!}{(26-3)!} = 11232000

11232000 plates can be made.

5 0
3 years ago
90 - y = 3y - 70 <br> solve for y<br> I NEEEED THIS NOWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
kirill [66]

Answer:

y=40

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
A metallic sphere is immersed in water in a cylindrical container causing a rise in the level of water by 7.5cm if the cylinder
SVETLANKA909090 [29]

Answer:

6.51 cm

Step-by-step explanation:

Since the sphere causes the water level in the cylindrical container to rise and thus increase by its own volume, the volume of the sphere is V = 4πr³/3 where r = radius of sphere. The volume rise of the container is thus    V' = πR²h where R = radius of base of cylinder = 7 cm and h = height of water level = 7.5 cm.

Since V = V',

4πr³/3 = πR²h

dividing through by π, we have

4r³/3 = R²h

multiplying both sides by 3/4, we have

r³ = 3R²h/4

taking cube-root of both sides, we have

r = ∛(3R²h/4)

Substituting the values of the variables into the equation, we have

r = ∛(3(7 cm)² × 7.5 cm/4)

r = ∛(3 × 49 cm² × 7.5 cm/4)

r = ∛(1102.5cm³/4)

r = ∛(275.625 cm³)

r = 6.508 cm

r ≅ 6.51 cm to 2 decimal places

3 0
3 years ago
JUST NEED ANSWER THANKS people never answer my questions :(
Stolb23 [73]
(-2)^{2} is 4.

Then, 7(-2) is -14.

Then, 4 - (-14) is (-18).

Finnaly, (-18) - 8 is [-26]
5 0
3 years ago
Read 2 more answers
If guy walks from his house to school and back,how far does he walk?
Serga [27]
He walked the same distance to school and back home.
I hope this helped! :-)
8 0
3 years ago
Read 2 more answers
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