All categories

3 years ago

Can someone help pls

Mathematics

1 answer:

ladessa [460]3 years ago

6 0

Answer:

$\frac{ - 1}{2}$

You might be interested in

What is butterfly cycle

Vedmedyk [2.9K]

The butterfly and moth develop through a process called metamorphosis. This is a Greek word that means transformation or change in shape. There are four stages in the metamorphosis of butterflies and moths: egg, larva, pupa, and adult.

mark me brainliesttt :)))

7 0

3 years ago

Please help please please please

tankabanditka [31]

Answer:

Step-by-step explanation:

the hypotenuse is equal to the square root of 2 times x in a 45 45 90 right triangle

the square root of 2 times the square root of 2 cancels out to equal 2 and 2 times 3 is 6 so the hypotenuse equals 6

7 0

3 years ago

The table below shows the distance a train traveled over time. How can you determine the equation that represents this relations

n200080 [17]

Answer:

see the explanation

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

Let

x ----> the time in seconds

y ---> the distance in meters

In this problem we have a proportional relationship between the variables x and y

Find the constant of proportionality k

$k=\frac{y}{x}$

For x=2, y=25 ---> $k=\frac{25}{2}=12.5$

For x=4, y=50 ---> $k=\frac{50}{4}=12.5$

For x=6, y=75 ---> $k=\frac{75}{6}=12.5$

For x=8, y=100 ---> $k=\frac{100}{8}=12.5$

The value of k is $12.5\ \frac{m}{sec}$

In this problem the value of k or slope represent the speed of the train

The linear equation is equal to

$y=12.5x$

$Distance=12.5Time$

4 0

4 years ago

22. Abnormalities In the 1980s, it was generally believed that congenital abnormalities affected about 5% of the nation’s childr

Vinvika [58]

Answer:

Step-by-step explanation:

Set up null and alternate hypothesis

H0: p =0.05

Ha: p>0.05

(One tailed test at 5% level)

Sample size n =384

Sample proportion p = 46/384 =0.1198

p difference = 0.1198-0.05 =0.0698

Std error = $\sqrt{\frac{0.1198*0.8702}{384} } =0.0165$

Test statistic = 4.23

p value = 0.000012

Since p<0.05, we reject null hypothesis

There is more than 99.95% probability that proportion is more than 0.05

We accept the claim that the risk has increased.

6 0

3 years ago

What is the simplified form of the following expression? ^4 sqrt 16x^8y^12z^4

natita [175]

Answer:

the right answer is the third one

3 0

4 years ago

Read 2 more answers