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2 years ago

Find the unknown number. Enter your answer in simplest form. 9/10 - ? = 1/2 ?

Mathematics

2 answers:

lord [1]2 years ago

8 0

Answer:

well its 2/5

Step-by-step explanation:

because its 4/10 but you wanted to simplify it so its 2/5

brainlist? its the crown btw

galben [10]2 years ago

4 0

Answer:

? = 2/5

Step-by-step explanation:

Lets say '?' is 'x'
First change 1/2 to 5/10
Now, subtract 9/10 from 5/10. You should get -x = -4/10
Now divide the equation by -1 so x=4/10
4/10 is the same as 2/5, which is the answer

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Solve the inequalities and show your work:

stepan [7]

Answer:

x<4

Step-by-step explanation:

x/2-3<-1

Add 3 to each side

x/2-3+3<-1+3

x/2 < 2

Multiply each side by 2

x/2*2 <2*2

x<4

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3 years ago

Find the magnitude of the vector from the origin to (-7, -5) and write the vector as the sum of unit vectors.

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3 years ago

Mr. Smith had 34 of a peach pie left over. He split the leftover pie among his 3 co-workers.

viktelen [127]

Answer:

11.333 infinity

Step-by-step explanation:

when you divide 34 by 3 you then get 11.3 infinity which would also be a repeating decimal

8 0

3 years ago

Which function is the inverse of f(x) = 2x + 3?

lianna [129]

Answer:

y = 1/2x - 3/2

Step-by-step explanation:

The easiest way to find the inverse is to switch x and y and solve for y.

y = 2x + 3

x = 2y + 3 (Switch)

x-3 = 2y (Subtract y from both sides)

x/2 - 3/2 = y (Divide both sides by 2)

8 0

3 years ago

Read 2 more answers

Suppose 10000 people are given a medical test for a disease. About1% of all people have this condition. The test results have a

Alina [70]

Answer:

The percent of the people who tested positive actually have the disease is 38.64%.

Step-by-step explanation:

Denote the events as follows:

X = a person has the disease

P = the test result is positive

N = the test result is negative

Given:

$P(X)=0.01\\P(P|X^{c})=0.15\\P(N|X)=0.10$

Compute the value of P (P|X) as follows:

$P(P|X)=1-P(P|X^{c})=1-0.15=0.85$

Compute the probability of a positive test result as follows:

$P(P)=P(P|X)P(X)+P(P|X^{c})P(X^{c})\\=(0.85\times0.10)+(0.15\times0.90)\\=0.22$

Compute the probability of a person having the disease given that he/she was tested positive as follows:

$P(X|P)=\frac{P(P|X)P(X)}{P(P)}=\frac{0.85\times0.10}{0.22} =0.3864$

The percentage of people having the disease given that he/she was tested positive is, 0.3864 × 100 = 38.64%.

3 0

3 years ago