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3 years ago

The sum of 1/2 and 1/5 is between 1/2 and 1.

Mathematics

1 answer:

Ivenika [448]3 years ago

8 0

Answer:

7/10

Step-by-step explanation:

You can change 1/2 and 1/5 to have common denominators, which are 5/10 and 2/10.

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A phone company offers two monthly plans. Plan A costs S8 plus an additional $0.15 for each minute of calls. Plan B costs $17 pl

SashulF [63]

Answer:

Minutes = 225

Cost = $41.75

Step-by-step explanation:

It is given that:

Cost of Plan A = $8

Per minute cost = $0.15

Let,

m be the number of minutes

A(m) = 0.15m + 8

Cost of Plan B = $17

Per minute cost = $0.11

B(m) = 0.11m + 17

For same cost,

A(m) = B(m)

0.15m+8 = 0.11m + 17

0.15m - 0.11m = 17 - 8

0.04m = 9

Dividing both sides by 0.04

$\frac{0.04m}{0.04}=\frac{9}{0.04}\\m = 225$

Cost of 225 minutes

A(225) = 0.15(225) + 8

A(225) = $41.75

Therefore,

Minutes = 225

Cost = $41.75

3 0

2 years ago

Determine the number of subsets and list down all of them.

Setler [38]

We have to use Powerset .All of the elements are subsets of the set.

If n(A)=n

$\boxed{\sf P(A)=2^n}$

{a,b,c}
It has 2^3=8subsets

Now

P(A)={{a},{b},{c},{a,b},{a,c},{b,c},{a,b,c}}

{2,4,6,8}
It has 2^4=16 subsets

Now

P(A)={{2},{4},{6},{8},{2,4},{2,8},{2,8},{4,8},{4,6},{6,8},{2,4,6},{2,4,8},{2,6,8},{4,6,8},{2,4,6,8}}

It has 2^5=32 subsets

Now

P(A)={{1},{2},{3},{4},{5},{1,2},{1,3},{1,4},{1,5},{2,3},{2,4},{2,5},{3,4},{3,5},{4,5},{1,2,3},{1,2,4},{1,2,5}...{1,2,3,4,5}}

7 0

3 years ago

Read 2 more answers

Can someone help me with this really quick?

mel-nik [20]

Answer:

top is likely, bottom is unlikely

Step-by-step explanation:

sorry, dont really know how to explain (pls mark brainliest :>)

7 0

3 years ago

Read 2 more answers

Triangle abc and xyz are congruent ,/_A is one half the size of /_B,/_y is 90° ./_c and /_z each have a measure of 45°.What is t

Rashid [163]

Answer:

∠a = 45°

Step-by-step explanation:

We are told that △abc and △xyz are congruent.

Thus;

∠a = ∠x

∠b = ∠y

∠c = ∠z

We are given;

∠y = 90°

Thus, ∠b = 90°

Now,we are told that ∠a is one half the size of ∠b.

Thus; ∠a = ½ × ∠b

∠a = ½ × 90

∠a = 45°

4 0

2 years ago

Recall the experiment comparing patients 4 weeks after surgery for carpal

dimulka [17.4K]

Answer:

4. H0: u1= u2 Ha; u1≠ u2

5. The smaller value of p supports the null hypothesis.

Step-by-step explanation:

4. The null and alternate hypotheses are

H0: u1= u2 i.e there no difference between the mean pinch strengthof the two surgeries

against the claim

Ha; u1≠ u2 i.e there a difference between the mean pinch strengthof the two surgeries

It can be written like this as well

H0: u1 -u2= 0 i.e there no difference between the mean pinch strengthof the two surgeries

against the claim

Ha; u1 -u2≠ 0 i.e there a difference between the mean pinch strengthof the two surgeries

Part 5. The test having a p- value less than 0.05 tells that the null hypothesis cannot be rejected. Theres no evidence to reject the null hypothesis.

The smaller value of p supports the null hypothesis.

3 0

2 years ago