All categories

3 years ago

Explain how you would find the sum of 4.2 and 2.14

2 answers:

5 0

The simplest way to add is by adding by place value, then adding them together.

Start with the hundredths. .04+.00=.04
Then the tenths. .2+.2=.3
Finally, the ones. 4+2=6

Add the results together to get the final answer.
.04+.3+6= 6.34

Ksju [112]3 years ago

3 0

4.20 + 2.14 = 6.34 :))

You might be interested in

M ∠4 = 2x°, m ∠2 = (4/3)x°, m ∠3 = 20°, find x.

anygoal [31]

The answer is c, b/c...

20+(4/3)x=2x

-(4/3)x -(4/3)x

20=(2/3)x

20/(2/3)=(2/3)x/(2/3)

A: 30=x

7 0

4 years ago

There are 28 student desks in Ms.Johnson's.Each desk measures 26.17 inches long.If you were to line up all the desk end-to-end,h

iragen [17]

Answer:

To find the answer to this question we need to multiply the number of desks by the length of each desk.

26.17 × 28 = 732.76

So the final answer is 732.76 inches

Step-by-step explanation:

4 0

3 years ago

What is the answer to this and can you answer this quickly please _ in. = 28 ft 10 in

vaieri [72.5K]

The answer is 250 in

3 0

3 years ago

Jermaine draws a triangle with the following dimensions:

Varvara68 [4.7K]

Answers and work is written in the picture. Hope this helps!!

3 0

3 years ago

In a random sample of 600 cars making a right turn at a certain intersection, 157 pulled into the wrong lane. Test the hypothesi

nevsk [136]

Answer:

The statistic value |Z| = 2.053 > 1.96 at 0.05 Level of significance

Null hypothesis is rejected

Alternative hypothesis is Accepted

Actually 30% of all drivers make not this mistake at the given intersection

b)

The test statistic value |Z| = 2.053 >2.576 at 0.01 Level of significance

Null hypothesis is Accepted

Actually 30% of all drivers make this mistake at the given intersection

Step-by-step explanation:

Step(i):-

Given Population proportion = 30% or 0.30

Given data In a random sample of 600 cars making a right turn at a certain intersection, 157 pulled into the wrong lane

sample proportion

$p^{-} = \frac{x}{n} = \frac{157}{600} = 0.2616$

Null hypothesis:- H₀: p = 0.30

Alternative hypothesis : H₁:p≠0.30

Step(ii):-

Test statistic

$Z = \frac{p^{-}-P }{\sqrt{\frac{p(1-p)}{n} } }$

$Z = \frac{0.2616-0.30 }{\sqrt{\frac{0.30(1-0.30)}{600} } }$

Z = -2.053

|Z| = |-2.053| = 2.053

Level of significance = 0.05

Z₀.₀₅ = 1.96

The calculated value |Z| = 2.053 > 1.96 at 0.05 Level of significance

Null hypothesis is rejected

Alternative hypothesis is Accepted

Conclusion:-

Actually 30% of all drivers make not this mistake at the given intersection

b)

Given level of significance = 0.01

Z₀.₀₁ = 2.576

The calculated value |Z| = 2.053 >2.576 at 0.01 Level of significance

Null hypothesis is Accepted

Actually 30% of all drivers make this mistake at the given intersection

7 0

3 years ago