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3 years ago

Need help with this asap!

Mathematics

1 answer:

Ksivusya [100]3 years ago

3 0

Step-by-step explanation:

step 1. m: m is the variable, 1 is the coefficient, 1 is the degree, constant is 0.

step 2. 3t^2 +4t - 6: t is the variable, 3 and 4 are the coefficients, 2 is the degree, -6 is the constant.

step 3. 2 - h: h is the variable, -1 is the coefficient, 1 is the degree (highest variable exponent), the constant is 2.

step 4. -7a^2: a is the variable, -7 is the coefficient (before the variable), 2 is the degree, the constant is 0.

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Please help me!!!!!!!!!!!!!!?

OLEGan [10]

So what you want to do for all of these is move the variable that you want to be the subject to one side of the equation and the other ones to the other side, then divide.

For example:

With number 1, m = 3n + 2p, since you want to make p the subject, first single out p by subtracting 3n from both sides.

m - 3n= 3n + 2p - 3n

2p = m - 3n

Then divide everything by 2.

2p / 2 = m/2 - 3n/2

p = , you could also say 1/2m - 3/2n

p = 1/2m - 3/2n

Next question: just do the same thing.

a = 3c - 4

a + 4 = 3c - 4 + 4

3c = a + 4

/3 /3 /3

c = 1/3a + 4/3

Next question: same process.

P - 2a = 2a - 2a + 2b

2b = P - 2a

/2 /2 /2

b = 1/2P - a

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3 years ago

What is the y-coordinate of the vertex of the parabola that is given by the equation below?x = -2.5(y - 3)2 + 5?

SpyIntel [72]

The answer is y = 4 - 0.2x

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4 years ago

What is the y-intercept of the line that is perpendicular to the line 7x+2y=14 and passes

Alex_Xolod [135]

Considering the definition of perpendicular line, the y-intercept of the line that is perpendicular to the line 7x+2y=14 and passes through the point (7,-6) is -8.

<h3>Linear equation</h3>

A linear equation o line can be expressed in the form y = mx + b

where

x and y are coordinates of a point.
m is the slope.
b is the ordinate to the origin and represents the coordinate of the point where the line crosses the y axis.

<h3>Perpendicular line</h3>

Perpendicular lines are lines that intersect at right angles or 90° angles. If you multiply the slopes of two perpendicular lines, you get –1.

<h3>Equation of perpendicular line in this case</h3>

In this case, the line is 7x+2y=14. Expressed in the form y = mx + b, you get:

2y= 14 - 7x

y= (-7x + 14)÷ 2

If you multiply the slopes of two perpendicular lines, you get –1. In this case, the line has a slope of -7/2. So:

-7/2× slope perpendicular line= -1

slope perpendicular line= (-1)÷ (-7/2)

<u><em>slope perpendicular line= 2/7</em></u>

So, the perpendicular line has a form of: y= 2/7x + b

The line passes through the point (7,-6). Replacing in the expression for perpendicular line:

-6= 2/7× (7) + b

-6= 2 + b

-6 -2 = b

<u><em>-8= b</em></u>, being b the y-intercept of the line.

Finally, the y-intercept of the line that is perpendicular to the line 7x+2y=14 and passes through the point (7,-6) is -8.

Learn more about perpendicular line:

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2 years ago

How to convert 5/8 to a decimal

Softa [21]

You divide 5 by 8 it’s really easy

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4 years ago

According to the National Postsecondary Student Aid Study conducted by the U.S. Department of Education in 2008, 62% of graduate

Ronch [10]

The standard error for the distribution of sampling proportions will be 0.0686.

<h3>What is standard error for the distribution of sampling proportions?</h3>

In mathematics, the difference between a data set and the populace's true average is known as primary data deviation from the mean.

According to the National Postsecondary Student Aid Study conducted by the U.S.

Department of Education in 2008, 62% of graduates from public universities had student loans.

We randomly select 50 students at a time.

Then the standard error for the distribution of sampling proportions will be

$\rm Standard\ error = \sqrt{\dfrac{p(1-p)}{n}}\\\\Standard\ error = \sqrt{\dfrac{0.62(1-0.62)}{50}}\\\\Standard\ error = 0.0686$

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2 years ago