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8090 [49]
2 years ago
9

My cousin needs help with this

Mathematics
2 answers:
Nikolay [14]2 years ago
7 0
The pictisn’t loading
9966 [12]2 years ago
4 0

Answer:

B

Step-by-step explanation:

if she practiced for 4 hours, we can go to the 4-hour mark and go upward until we see the dot. the dot lands on 3 hits every 4 hours so we can safely assume its B

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Which number can be used as a common denominator for the fractions 1/4 and 5/6? Check all that apply.
Juli2301 [7.4K]
You could either use 12 or 24.
6 0
3 years ago
Determine each of the following.
castortr0y [4]

Answer:

(a) \{1,2,3,4,5,6,7,8,9,10\}

(b) 10

(c) \{\}

(d) 0

(e) 1024

Step-by-step explanation:

(a)

A = {x ∈ Z | 0 < x, x² ≤ 100}

We need to find all the elements of given set.

The given conditions are

0                ... (1)

x^2\leq 100

Taking square root on both sides.

-\sqrt{100}\leq x\leq \sqrt{100}

-10\leq x\leq 10             .... (2)

Using (1) and (2) we get

0

Since x ∈ Z,

A=\{1,2,3,4,5,6,7,8,9,10\}

(b)

We need to find the value of  | {x ∈ Z | 0 < x, x² ≤ 100}| or |A|. It means have to find the number of elements in set A.

|A|=10

| {x ∈ Z | 0 < x, x² ≤ 100}| = 10

(c)

B = {x ∈ Z | x > 10, x² ≤ 100}

We need to find all the elements of given set.

The given conditions are

x>10                ... (3)

x^2\leq 100

It means

-10\leq x\leq 10             .... (4)

Inequality (3) and (4) have no common solution, so B is null set or empty set.

B=\{\}

(d)

We need to find the value of |{x ∈ Z | x > 10, x² ≤ 100}| or |B|. It means have to find the number of elements in set B.

|B|=0

|{x ∈ Z | x > 10, x² ≤ 100}| = 0

(e)

We need to find the value of | P(A) |. P(A) is the power set of set A.

Number of elements of a power set is

N=2^n

where, n is the number of elements of set A.

We know that the number of elements of set is 10. So the value of |P(A)| is

|P(A)|=2^{10}

|P(A)|=1024

Therefore |P(A)|=1024.

7 0
3 years ago
In the equation Ax + By = C, A and B
Rudik [331]

Answer:

0(x) + BY=c

0 + By = c

By = c

divide both sides by BY

BY/by = c/By

= c/by

3 0
3 years ago
Indicate the answer choice that best completes the statemento<br> Dr What is the value of |-6|?
sleet_krkn [62]
6 absolute value is 6
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3 years ago
The scores on an exam are normally distributed with a mean of 77 and a standard deviation of 10. What percent of the scores are
Shtirlitz [24]

<span>The correct answer between all the choices given is the second choice, which is 16%. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.</span>

5 0
3 years ago
Read 2 more answers
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