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3 years ago

PLEASE HELP MEEEE!!! I WILL MARK YUUU BRAINLIEST IF YOUR CORRECTT!!!!

Mathematics

1 answer:

NNADVOKAT [17]3 years ago

5 0

Answer:

Alkali Metals are extremely reactive. Alkaline Earth Metals are soft. Alkali Metals have 1 valence electron, while Alkaline Earth Metals have 2 valence electrons. Alkali metals are more dense.

Step-by-step explanation:

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Simplify the following expression to simplest form using only positive exponents.

Novosadov [1.4K]

Answer:

$\frac{x^{6} }{4y^{10} }$

Step-by-step explanation:

THIS is the answer if the equation looks like this. $(32x^{-15} y^{25} )^{-2.5}$

7 0

3 years ago

For online courses, like those in eCore, there is a positive correlation between the amount of time spent in the course and the

Troyanec [42]

Answer:

Regression Line is given by,

y = 22.909 + 0.209 x

The course grade of a student in the course who spent an average of 103 minutes in the course each week is: 22.909 + 0.209 × 103 = 44.436

Step-by-step explanation:

The equation of Regression equation is of the form of:

y = a + bx

where, a is intercept and b is slope

The formula for a and b is given by,

$a=\frac{\sum Y \sum X^2-\sum X \sum XY}{n\sum X^2-(\sum X)^2}\\ and, b = \frac{n\sum XY -\sum X \sum Y}{n\sum X^2-(\sum X)^2}$

Here, ∑X = 1149.8, ∑Y = 377.2, ∑XY = 93115.95, ∑X² = 320246.72

Thus, a = 22.909

and b = 0.209

Thus, Regression Line is given by,

y = 22.909 + 0.209 x

Thus, The course grade of a student in the course who spent an average of 103 minutes in the course each week is: 22.909 + 0.209 × 103 = 44.436

Now plotting these line:

6 0

2 years ago

Please helppppppppppppppppp

Alex777 [14]

Answer:

Step-by-step explanation:

6 0

2 years ago

The energy released by metabolism of 1 average candy bar is 1 x 10^6 joules.

Elis [28]

Answer: 32

Step-by-step explanation:

Given: The energy needed for 1 hour of running for an adult $=4.5\times10^6\ joules.$

Therefore. the energy needed for seven hours of running= $=7\times4.5\times10^6\ joules.=31.5\times10^6\ joules$

Since, he energy released by metabolism of 1 average candy bar $=1\times10^6\ joules.$

Therefore, the number of candy bars an adult need to eat to supply the energy needed for seven hours of running.= $\frac{31.5\times10^6}{1\times10^6}=31.5\approx32$

Hence, the adult need to eat 32 candies to supply the energy needed for seven hours of running.

3 0

2 years ago

Help will give brainiest

son4ous [18]

Answer:

I'm pretty sure the answer is a

4 0

2 years ago

Read 2 more answers