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maksim [4K]
3 years ago
14

Simplify the followin expression.x^4+3x^3-2x^3-5x^2-x+x^2+x+1+7x^4

Mathematics
1 answer:
REY [17]3 years ago
7 0

Answer:

8 x^ 4  +  x^ 3  −  4x^2  +  1

Step-by-step explanation:

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2x+4x+6x=10x+84 please help solve
Natasha2012 [34]

2x+4x+6x = 10x+84

12x-10x = 84

2x = 84

x = 42

3 0
3 years ago
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How do I do this I’ll mark u brainliest pls ?
nataly862011 [7]

Answer:

1. is a 30 60 90 triangle so x = 30

pardon my bad handwriting for below

2.

STEP 1: subtract the angle you have from 180

STEP 2: add your x values together, if there is a non x number (such as + 10) balance it out on the other side by adding or subtracting

STEP 3: divide so that x has no coeffecient in front of it

STEP 4: substitute x values with the value you got

STEP 5: verify by adding the angles you got, it'll be correct if it equals 180

5 0
3 years ago
The height "h" of a ball thrown straight up with a velocity of 88 ft/s is given by h = -16t^2 + 88t where "t" is the time it is
Dvinal [7]

By definition of the zeros of ta quadratic function,  for 5.5 seconds the ball is in the air before it hits the ground.

<h3>Zeros of a function</h3>

The points where a polynomial function crosses the axis of the independent term (x) represent the so-called zeros of the function.

That is, the zeros represent the roots of the polynomial equation that is obtained by making f(x)=0.

In summary, the roots or zeros of the quadratic function are those values ​​of x for which the expression is equal to 0. Graphically, the roots correspond to the abscissa of the points where the parabola intersects the x-axis.

<h3>Time the ball is in the air before it hits the ground</h3>

In this case, the height "h" of a ball thrown straight up with a velocity of 88 ft/s is given by h = -16t² + 88t, where "t" is the time it is in the air.

When the ball hits he ground, he height h has a value of zero. This is h=0. Replacing in the previous expression for the height you get:

0= -16t² + 88t

It can be solved by extracting the term "t" as a common factor:

0= t×(-16t + 88)

The Zero Product Principle says that if the product of two numbers is 0, then at least one of the factors is 0. Then:

t= 0

or

0= -16t + 88

Solving: -88= -16t

(-88)÷ (-16)=t

<u><em>5.5= t</em></u>

Finally, this means that for 5.5 seconds the ball is in the air before it hits the ground.

Learn more about the zeros of a quadratic function:

brainly.com/question/12649112

brainly.com/question/21320065

brainly.com/question/12037466

#SPJ1

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2 years ago
ANSWER FOR BRAINLIEST AND PLEEASEE EXPLAIN :)
trapecia [35]

Answer: I think Value of x is 8 I’m not sure

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3 years ago
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At a high school cafeteria, diners can choose one vegetable from a choice of 2 vegetables, one meat from a choice of 2 meats, on
Margarita [4]
2*2*3*3=36, so it is (B)
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