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3 years ago

4 2/5 - 1 7/10 2 3/10 2 7/10 3 1/10 2 9/10

Mathematics

2 answers:

elena-s [515]3 years ago

3 0

4 2/5 - 1 7/10
= 4 4/10 - 1 7/10
= 3 14/10 - 1 7/10
= 2 7/10

answer
2 7/10

Mars2501 [29]3 years ago

3 0

Hello,

4 2/5 - 1 7/10
= 4 4/10 - 1 7/10
= 3 14/10 - 1 7/10
= 2 7/10

Hope this helps

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guapka [62]

Answer:

-5x + 3(10x - 8)= 51

-5x + 30x - 24 = 51

25x - 24 = 51

25x = 75

x = 3

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3 years ago

What is the area of this figure? Enter your answer in the box.

MArishka [77]

The area of this figure is, the area of this figure.

5 0

3 years ago

90:(3+6)-20.(60-55) propiedad

Roman55 [17]

Answer:

https://www.commoncoresheets.com/Math/Properties/Applying%20Properties%20of%20Operations/Spanish/2.pdf

Step-by-step explanation:

This will help you:) not a spam link its a pdf that brings you straight to the worksheet <3

7 0

3 years ago

in a given year, the rate of flu infection for the general public was 8.3%. And sample of 200 people who receive the flu vaccine

makkiz [27]

Answer:

$\fbox{\begin{minipage}{10em}Option A is correct\end{minipage}}$

Step-by-step explanation:

Step 1: Define significance level

In this hypothesis testing problem, significance levels α is selected: $0.05$ , the associated z-value from Laplace table:

Φ( $z$ ) = α - $0.5 = 0.05 - 0.5 = -0.45$

=> $z$ = $-1.645$

Step 2: Define null hypothesis ( $H_{0}$ ) and alternative hypothesis ( $H_{1}$ )

$H_{0}$ : rate of flu infection $p$ = 8.3% or 8.3/100 = 0.083

$H_{1}$ : rate of flu infection $p$ < 8.3% or 8.3/100 = 0.083

Step 3: Apply the formula to check test statistic:

$K = \frac{f - p}{\sqrt{p(1 - p)} } * \sqrt{n}$

with $f$ is actual sampling percent, $p$ is rate of flu infection of $H_{0}$ , $n$ is number of samples.

The null hypothesis will be rejected if $K < z$

Step 4: Calculate the value of K and compare with $z$

$K = \frac{(\frac{3.5}{100}) - 0.083}{\sqrt{0.083(1 - 0.083)} } * \sqrt{200} = -2.46$

We have $-2.46 < -1.645$

=>This is good evidence to reject null hypothesis.

=> The actual rate is lower. (As $H_{1}$ states)

Hope this helps!

5 0

3 years ago

-3x -10=32 can anybody help me

pochemuha

Answer:

x=-14

Step-by-step explanation:

4 0

2 years ago

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