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alexdok [17]
2 years ago
7

Increase 40 by 1/2 I need help, im bad at mathematics.

Mathematics
1 answer:
Bess [88]2 years ago
6 0

Answer:

The answer is :60

Step-by-step explanation:

Hmmmm...... because

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On the graph, sketch f(x)=x+3 as well as g(x)=x
tresset_1 [31]

Answer:

below

Step-by-step explanation:

5 0
1 year ago
Bella bought packs of stickers to give to her friends. Each pack cost $4. She spent a total of
Shalnov [3]

Answer:

8 packs

Step-by-step explanation:

$4 = 1 pack

$32 = ?

$32 = $32/$4

$32 = 8 packs

4 0
3 years ago
Identify the correct conclusion. Do not reject the null hypothesis. Report that there insufficient evidence to conclude that tre
mr_godi [17]

The question is incomplete. The complete question is :

Tests for adverse reactions to a new drug yielded the results given in the table. Drug Placebo headaches No headaches 11 7 91 73 The data will be analyzed to determine if there is sufficient evidence to conclude that an association exists between the treatment (drug or placebo) and the reaction (whether or not headaches were experienced. The results of the test are X2 = 1.798 P-value = .1799. Identify the correct conclusion. O Do not reject the null hypothesis. Report that there insufficient evidence to conclude that treatment and reaction are dependent. O Fail to reject the null hypothesis. Report that there insufficient evidence to conclude that the distribution of headaches is uniform for the drug and placebo. O Reject the null hypothesis. Report that there is sufficient evidence to conclude that treatment and reaction are dependent. O Reject the null hypothesis. Report that there is insufficient evidence to conclude that treatment and reaction are dependent.

Solution :

Given :

                             Drugs               Placebo

Headaches             11                         7

No headaches       73                       91

The results of the test are :

$X^2=1.798$

The P value is given as = 0.1799

The hypothesis test given for dependent or association between the two variables.

$H_0$ : There is no association between the treatment and the reaction

$H_1$ : There is association between the treatment and the reaction.

If the P value is greater than the alpha value, i.e. when

P value > α (0.05), then we reject the $H_0$.

Therefore, Do not $\text{reject the null hypothesis}$. Report that $\text{there insufficient}$ evidence to conclude that $\text{treatment}$ as well as $\text{reaction are dependent}$.

7 0
2 years ago
<img src="https://tex.z-dn.net/?f=9x%20%7B%7D%5E%7B2%7D%20y%20%7B%7D%5E%7B3%7D%20z%20%7B%7D%5E%7B5%7D%20%20%5Cdiv%206x%20%7B%7D%
dexar [7]

Answer:

3y²z³ / 2x

Step-by-step explanation:

we can take one term at a time:

9/6 can be simplified to 3/2

x²÷x³ = x^-1 which equals \frac{1}{x}

y³÷y = y²

z⁵÷z² = z³

put it all together:

3·\frac{1}{x}·y²·z³ / 2  or

3y²z³ / 2x

8 0
3 years ago
A train whistle is 580 Hz when stationary. It is coming toward you at 18.8 m/s. What frequency do you hear?
Usimov [2.4K]

Answer:

612 Hz.

Step-by-step explanation:

The frequency of the sound  will be proportionally higher when coming towards you. The increase is related to the speed of the train.

So the frequency will be:  

580 + (580 / 343) * 18.8

=  612 Hz.

This is called the Doppler effect.

4 0
2 years ago
Read 2 more answers
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