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JulsSmile [24]
1 year ago
12

Find the sum of these polynomials.(5x2 - 4x + 2) + (3x² + 9x-8)=

Mathematics
1 answer:
dexar [7]1 year ago
5 0

we have the expression

(5x^2-4x+2)+(3x^2+9x-8)

step 1

Group similar terms

\begin{gathered} (5x^2+3x^2)+(-4x+9x)+(2-8) \\ Combine\text{ like terms} \\ 8x^2+5x-6 \end{gathered}<h2>The answer is option A</h2>
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Which shows the image of quadrilateral ABCD after the transformation R0, 90°?
avanturin [10]

Answer:

A'(0,-1), B'(1,0) , C'(3,-2), and D'(2,-3)

Step-by-step explanation:

The coordinates of rectangle ABCD are A(-1,0), B(0,-1), C(-2,-3), (-3,-2).

The mapping for a rotation through 90° clockwise about the origin is

(x,y)\to ( - y,x)

Therefore:

A(-1,0)\to A'(0,-1)

B(0,-1)\to B'(1,0)

C(-2,-3)\to C'(3,-2)

D(-3,-2)\to D'(2,-3)

Therefore the image rectangle has coordinates:

A'(0,-1), B'(1,0) , C'(3,-2), and D'(2,-3)

The first choice is correct.

4 0
3 years ago
Read 2 more answers
Plzzzzz help i'm in desprate need of help with this
Ainat [17]

Answer:

Obtuse

Step-by-step explanation:

Right = has angle measure of 90°

Acute = has angle measure less than 90°

Equilateral = 2 or more angles whose angle measures are congruent to others

Circle = measures 360°

<u>Obtuse = Angle measure greater than 90° and less than 180°</u>

Hope this helps!

5 0
3 years ago
A spherical globe has a diameter of 10 inches. What is the approximate volume of the globe?
adelina 88 [10]

Answer:

523.33 in^3

Step-by-step explanation:

A sphere is a 3-dimensional version of a circle. An example of a sphere is a ball

Volume of a sphere = \frac{4}{3}πr^{3}

Where

π = 3.14

r = radius

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

diameter = 2r

Radius = 10 in / 2 = 5 inches

\frac{4}{3} × 3.14 ×5^{3} = 523.33 in^{3}

6 0
3 years ago
Please help 56 POINTS
e-lub [12.9K]
<h2>Answer: 81 Step-by-step explanation: The median of data not grouped is the middle number after arranging the data is either ASCENDING OR DESCENDING order.  Arranging these states HIGH TEMPERATURES in ascending order, we have: 72, 78, 79, 81, 81, 82, 84, 88,  88 The middle number there is 81   </h2>
5 0
4 years ago
Rotate -4,3 90 degrees counter clockwise
Delicious77 [7]
The answer would be (4,3)

8 0
3 years ago
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