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3 years ago

What is the sum of the given polynomials in standard form? (x2 – 3x) + (–2x2 + 5x – 3)

Mathematics

2 answers:

LekaFEV [45]3 years ago

7 0

Answer:

-x² + 2x - 3

Step-by-step explanation:

Simply combine like terms together.

x² terms are added together

x terms are added together

Constants are added together

11Alexandr11 [23.1K]3 years ago

3 0

Answer: -x^2 + 2x - 3

Step-by-step explanation:

(x^2 - 3x) + (-2x^2 + 5x - 3)

Combine like terms

x^2 - 2x^2 - 3x + 5x - 3

x^2 - 2x^2 = -x^2

-3 + 5x = 2x

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CE and FI are parallel, give reasons to prove that DGH is isosceles

Tresset [83]

Answer:

DGH has a different number than Ce and FI

4 0

3 years ago

Evaluate the expression. 1/2 - 4 (1/2 + 1)^2

insens350 [35]

Answer:

D. -17/2

Step-by-step explanation:

1/2 - 4 (1/2 + 1)^2

First we evaluate what is inside the parentheses

1/2 - 4 (3/2) ^2

Now we square what is inside the parentheses

1/2 - 4(9/4)

Now multiply

1/2 -9

Get a common denominator 9 = 9 *2/2 = 18/2

1/2 - 18/2

-17/2

6 0

4 years ago

Read 2 more answers

An 18 ft. tree casts a 15 ft. long shadow as shown in the following figure. Which of the following is the angle formed by the su

BabaBlast [244]

Answer:

The angle is 50.2°.

Step-by-step explanation:

The tree and its shadow from a right triangle with the tree being the perpendicular and the shadow being the base as shown in the figure attached.

Therefore the angle θ formed by the sun's rays and the ground is:

$\theta = tan^-1(\frac{18}{15} )=\boxed{50.2^o}$

8 0

3 years ago

-4/7 + 2/7x - 14x + 4/7

alexgriva [62]

Answer:

The solved given expression is

$\frac{-4}{7}+\frac{2}{7}x-14x+\frac{4}{7}=\frac{-96x}{7}$

Step-by-step explanation:

Given expression is $\frac{-4}{7}+\frac{2}{7}x-14x+\frac{4}{7}$

To solve the given expression :

$\frac{-4}{7}+\frac{2}{7}x-14x+\frac{4}{7}$

$=\frac{-4+4+2x}{7}-14x$

$=\frac{0+2x}{7}-14x$

$=\frac{2x}{7}-14x$

$=\frac{2x-14x(7)}{7}$

$=\frac{2x-98x}{7}$

$=\frac{-96x}{7}$

Therefore $\frac{-4}{7}+\frac{2}{7}x-14x+\frac{4}{7}=\frac{-96x}{7}$

Therefore the solved given expression is

$\frac{-4}{7}+\frac{2}{7}x-14x+\frac{4}{7}=\frac{-96x}{7}$

5 0

3 years ago

A car is traveling at a rate of of 55 miles per hour. how many feet oer hour does the car travel?

Ray Of Light [21]

There are 5280 ft in a mile. 55*5280=290400. So the car is travelling 290,400 ft/hour

7 0

3 years ago