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vlabodo [156]
3 years ago
9

What is the sum of the polynomials? (7x2 - 4x) + (2x - 4x4)

Mathematics
1 answer:
irina1246 [14]3 years ago
4 0

Answer:

d) 9x^3 - 8x^2

Explaination:

7x^3 - 4x^2 + 2x^3 -4x^2

= 9x^3 - 8x^2

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Help! ASAP!!!
solniwko [45]

Answer:

7.2 units

Step-by-step explanation:

Coordinates of city A = (0, 0)

Coordinates of city B = (6, 4)

Use the distance formula to find the distance between the two cities as follows:

AB = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

Let,

A(0, 0) = (x_1, y_1)

B(6, 4) = (x_2, y_2)

Plug in the values into the formula

AB = \sqrt{(6 - 0)^2 + (4 - 0)^2}

AB = \sqrt{(6)^2 + (4)^2}

AB = \sqrt{36 + 16} = \sqrt{52}

AB = 7.2 (nearest tenth)

6 0
4 years ago
Given sinθ=- 3/5 and cscθ=-5/3 in quadrant III, find the value of other trigonometric functions using a Pythagorean Identity. Sh
Yakvenalex [24]
Let ABC be a triangle in the 3rd quadrant, right-angled at B. 
 So, AB-> Perpendicular BC -> Base AC -> Hypotenuse. 
Given: sinθ=-3/5 cosecθ=-5/3 
 According to Pythagorean theorem, square of the hypotenuse is equal to the sum of square of the other two sides.
 Therefore in triangle ABC, 〖AC〗^2=〖AB〗^2+〖BC〗^2 ------
--(1)
 Since sinθ=Perpendicular/Hypotenuse ,
 AC=5 and AB=3
 Substituting these values in equation (1)
 
〖BC〗^2=〖AC〗^2-〖AB〗^2

 ă€–BC〗^2=5^2-3^2
 

 ă€–BC〗^2=25-9

 ă€–BC〗^2=16

 BC=4 units

 Since the triangle is in the 3rd quadrant, all trigonometric ratios, except tan
and cot are negative.
 So,cosθ=Base/Hypotenuse Cosθ=-4/5 
 secθ=Hypotnuse/Base secθ=-5/4 
 tanθ=Perpendicular/Base tanθ=3/4  
 cotθ=Base/Perpendicular cotθ=4/3
4 0
3 years ago
Which equation represents the line that passes through (-6, 7) and (-3, 6)?
Leto [7]

Answer:

b

Step-by-step explanation:

Use the formula y1-y2÷x1-x2

7-6÷(-6)-(-3)

7-6=-1

(-6)-(-3)=3

So, you know that you have a slope of -1/3. so, b would be your answer

3 0
4 years ago
0x-7*9 = 0<br>Solve for x.<br>​
Helga [31]

Answer:

Undefined

<em>Step </em><em>by</em><em> step</em><em> </em><em>explaination:</em>

<em> </em>

by order of operations we know that we multiply first;

so, 0x-(7*9)=0

1) Multiply the ones in brackets first:

0x-63=0

2) To make X the subject perform the opposite operation:

0x-64+63=0+63

0x=63

3) Divide 0 on both sides;

0x/0= 63/0

therefore; <u>x is undefined</u>

3 0
2 years ago
Read 2 more answers
HI OMG ILL GIVE BRAINLIESST PLEASE HLEP ME
Vesnalui [34]

Answer:

233.19 inch³

Step-by-step explanation:

Volume of prisms: Length * Width * Height

given for first prism: Length = 7 cm  Width = 3.25 cm Height = 7 cm

given for second prism: length = 7 cm width = 3.25 height = 3.25

using the formula:

Total volume: prism 1 volume + prism 2 volume

Total volume: 7 * 3.25 * 7 + 7 * 3.25 * 3.25

                     : 159.25+ 79.9375

                     : 233.1875 inch³

                     : 233.19 inch³ .........rounded to nearest hundredth

4 0
3 years ago
Read 2 more answers
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