All categories

3 years ago

3/4 - 3/10 = ? Simply the answer.

1 answer:

5 0

Given:

3/4 - 3/10 = ?

Taking common denominator by multiplying first fraction by 5 and the second fraction by 2.
Hence,
The equation becomes:

=15/20 - 6/20
subtracting the numerators :

= (15-6)/20
= 9/20

You might be interested in

Find the first three terms of the sequence below. T, = n2 + 2n +9

NikAS [45]

Answer:

12, 17, 24

Step-by-step explanation:

To find the first 3 terms, substitute n = 1, 2, 3 into the rule, that is

T₁ = 1² + 2(1) + 9 = 1 + 2 + 9 = 12

T₂ = 2² + 2(2) + 9 = 4 + 4 + 9 = 17

T₃ = 3² + 2(3) + 9 = 9 + 6 + 9 = 24

7 0

3 years ago

Read 2 more answers

peggy is five years older than peter and susan is two years younger than peter the sum of their ages is 15 years how old is each

spin [16.1K]

Peggy is 9, Peter is 4, and Susan is 2
9+4+2=15

5 0

3 years ago

Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69.569.5 bpm.

Shtirlitz [24]

Answer:

a) $\mu =69.5$

b) Null hypothesis: $\mu =69.5$

Alternative hypothesis: $\mu \neq 69.5$

And we can use a t test procedure in order to check if the true mean is equat to the desired value.

Step-by-step explanation:

For this case we know that this:

Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69.5 bpm

Part a

If we convert this with symbols we can write this as:

$\mu =69.5$

Part b

We have the following info given:

$\bar X= 69.9$ represent the sample mean

$n =131$ represent the sample size

We have the following system of hypothesis:

Null hypothesis: $\mu =69.5$

Alternative hypothesis: $\mu \neq 69.5$

And we can use a t test procedure in order to check if the true mean is equat to the desired value.

8 0

3 years ago

Determine the length of side BD in the triangle below. 12 15 13 D B с

Romashka [77]

9514 1404 393

Answer:

BD = 14

Step-by-step explanation:

The Pythagorean theorem can be used to find the lengths of CD and BC.

CD² +12² = 13²

CD = √(169 -144) = √25 = 5

BC² +12² = 15²

BC = √(225 -144) = √81 = 9

The length BD is then ...

BD = BC +CD

BD = 9 + 5 = 14

The length of side BD is 14 units.

7 0

3 years ago

5 = 2x + 5 what is this for Pre-Algebra

Talja [164]

Answer: p

Step-by-step explanation:

We want to start by isolating the variable.

Subtract 5 from both sides.

In this case, that will leave you with 0= 2x.

After this, you want to completely isolate the variable by dividing by two.

0/2 still equals 0, so X will equal 0.

3 0

3 years ago