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3 years ago

Pleas help me !!! It’s due today

Mathematics

1 answer:

kolezko [41]3 years ago

6 0

KE=0.5xmxv2
=0.5x 1.2x10^3x (3.4x10^3)^2=6936000000

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Evaluate the value of x to 1 d.p Thank you

Keith_Richards [23]

Answer:

value of x = 2.8

Step-by-step explanation:

By law of cosines,

${a}^{2} = {b}^{2} + {c}^{2} - 2 \times b \times c \times cos(100) \\ {x}^{2} = {13}^{2} + {10}^{2} - (2 \times 13 \times 10 \times cos100) \\ = 169 + 100 - 260 \times 0.862 \\ = 269 - 260 \times 0.862 \\ = 7.758 \\x = \sqrt{7.758 } \\ = 2.785 \\ = approx \: 2.8$

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3 years ago

Software - Infinite Algebra 2 Absolute Value Inequalities Solve each inequality and graph its solution. Name Sarmant Date 3/8/20

gulaghasi [49]

$|6+9x|\le24$

this is the correct way to solve these types of exercises

then we will try to do the same where a is (6+9x) and b is 24

$|6+9x|\le24\longrightarrow-24\le6+9x\le24$

and solve the right inequality for x

$-24\le6+9x\le24$

subtract 6 for all expression

$\begin{gathered} -24-6\le6-6+9x\le24-6 \\ -30\le9x\le18 \end{gathered}$

now divide on 9

$\begin{gathered} -\frac{30}{9}\le\frac{9x}{9}\le\frac{18}{9} \\ \\ -\frac{10}{3}\le x\le2 \end{gathered}$

ok, this means that the x values will be from -10/3 to 2 including these

Graph

solution is the red zone

6 0

1 year ago

Archaeopteryx is an extinct beast having feathers like a bird but teeth and a long bony tail like a reptile. Only six fossil spe

Vadim26 [7]

Answer:

In this scenario, we will use the femur or the thigh bone length as the explanatory variable.

Step-by-step explanation:

Dependent variables are those variables that are under study, i.e. they are being observed for any changes when the other variables in the model are changed.

The dependent variables are also known as response variables.

Independent variables are the variables that are being altered to see a proportionate change in the dependent variable. In a regression model there can be one or more than one independent variables.

The independent variables are also known as the explanatory variables.

Scientifically it is believed that the length of arm and legs are related and basically grow at the same time.

So, in this case the explanatory variable can either of the two bone lengths.

Thus, the complete statement is:

"In this scenario, we will use the femur or the thigh bone length as the explanatory variable."

8 0

3 years ago

Of police academy applicants, only 25% will pass all the examinations. suppose that 12 successful candidates are needed. what is

Genrish500 [490]

The probability is 0.0008.

I used a binomial probability on this one, since there are two outcomes (either pass or fail); the events are independent (the probability of one person passing does not influence the probability of another passing); and there are a fixed number of trials (in this case, 20).

For binomial probabilities, we use the formula:
$_nC_k=p^k*(1-p)^{n-k}$

With our information, we have:

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3 years ago

Assume that a researcher measured self-esteem in 25 seventh-grade girls. The girls rated their self-esteem on a scale ranging fr

dezoksy [38]

Ya multimodel
and mode is 49,27

6 0

3 years ago