Pls help 0.4x3.2 step by step pls

15:45 in simplest form

mylen [45]

15:45 in simplest form is 1:3

the LCM of 15 and 45 is 15, and when you divide both by 15, you get 1:3

7 0

3 years ago

Draw a diagram using positive an negative tiles for this equation: -5-(-7)=2

Wewaii [24]

Sadly there is no way to graph properly on this website.

5 0

3 years ago

One company sells a 4 gallon jug of lemonade sells for $24 dollars another sells 8 pack of 1 quart bottles for $16, which one is

Ket [755]

Answer:

the 4 gallon jug of 24$ is cheaper

6 0

3 years ago

Read 2 more answers

A Roper survey reported that 65 out of 500 women ages 18-29 said that they had the most say when purchasing a computer; a sample

8090 [49]

Answer:

Step-by-step explanation:

Step(i):-

Given first random sample size n₁ = 500

Given Roper survey reported that 65 out of 500 women ages 18-29 said that they had the most say when purchasing a computer.

First sample proportion

$p^{-} _{1} = \frac{65}{500} = 0.13$

Given second sample size n₂ = 700

Given a sample of 700 men (unrelated to the women) ages 18-29 found that 133 men said that they had the most say when purchasing a computer.

second sample proportion

$p^{-} _{2} = \frac{133}{700} = 0.19$

Level of significance = α = 0.05

critical value = 1.96

Step(ii):-

Null hypothesis : H₀: There is no significance difference between these proportions

Alternative Hypothesis :H₁: There is significance difference between these proportions

Test statistic

$Z = \frac{p_{1} ^{-}-p^{-} _{2} }{\sqrt{PQ(\frac{1}{n_{1} } +\frac{1}{n_{2} } )} }$

where

$P = \frac{n_{1} p^{-} _{1}+n_{2} p^{-} _{2} }{n_{1}+ n_{2} } = \frac{500 X 0.13+700 X0.19 }{500 + 700 } = 0.165$

Q = 1 - P = 1 - 0.165 = 0.835

$Z = \frac{0.13-0.19 }{\sqrt{0.165 X0.835(\frac{1}{500 } +\frac{1}{700 } )} }$

Z = -2.76

|Z| = |-2.76| = 2.76 > 1.96 at 0.05 level of significance

Null hypothesis is rejected at 0.05 level of significance

Alternative hypothesis is accepted at 0.05 level of significance

Conclusion:-

There is there is a difference between these proportions at α = 0.05

3 0

3 years ago

Part A: An angle is two collinear rays with a common endpoint. Find an example that contradicts this definition. How would you c

nata0808 [166]

Angles are formed by intersection of non-collinear lines, rays and planes.

Part A

1. Contradictory Example

A contradictory example to the given definition is that:

When the rays are collinear; the rays do not form an angle, but they form a line

2. A more accurate definition

A more accurate definition is that:

An angle is formed at the intersection of two non-collinear rays that have the same endpoint

Part B

Example of an undefined term

Undefined terms do not have a formal definition; an example is the plane.

A plane pertains to angles because it determines the parameter to be measured.

Read more about angles and undefined terms at:

brainly.com/question/1402901

8 0

2 years ago