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White raven [17]
3 years ago
9

Question 21 of 25

Mathematics
1 answer:
Korvikt [17]3 years ago
3 0

Answer:

12

Step-by-step explanation:

Coefficient is the number before the variable

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Which symbol replaces the box to make the statement true?
Karolina [17]

Answer:

0. toab1. The right answer for K12 is ( > ) I Took the test and is correct. 4×16-16 > 4× [24-2× (4+8)] heart outlined. Thanks 0. star outlined. star outlined. star outlined.

8 0
2 years ago
The polynomial equation x^6-16x^2=4x^4-64 has complex roots +- 2i . What are the other roots? Use a graphing calculator and a sy
Irina18 [472]
Use u subsitution the solve by grouping
u=x^2
u^3-16u=4u^2-64
u^3-4u^2-16u+64=0
(u^3-4u^2)+(-16u+64)=0
u^2(u-4)+(-16)(u-4)=0
(u^2-16)(u-4)=0
(u-4)(u+4)(u-4)=0
(u+4)(u-4)^2=0

u=x^2
(x^2+4)(x^2-4)^2=0
(x^2+4)((x-2)(x+2))^2=0
(x^2+4)(x-2)²(x+2)²=0
set to zero

x^2+4=0
x^2=-4
x=+/-2i

x-2=0
x=2

x+2=0
x=-2

the other roots are -2 and 2

for graphinc calculator, graph and find x intercepts
3 0
3 years ago
Read 2 more answers
Plzzz helppp!!<br> 9-4x=17????
AnnyKZ [126]

Answer:

<h3>\boxed{ \bold{ \boxed{ \sf{x =  - 2}}}}</h3>

Step-by-step explanation:

\sf{9 - 4x = 17}

Move 9 to right hand side and change it's sign

⇒\sf{ - 4x = 17 - 9}

Subtract 9 from 17

⇒\sf{ - 4x = 8}

Divide both sides of the equation by -4

⇒\sf{ \frac{ - 4x}{ - 4}  =  \frac{8}{ - 4}}

Calculate

⇒\sf{x =  - 2}

Hope I helped!

Best regards!!

6 0
3 years ago
Using a calculator or otherwise, calculate the exact value of 498.79×14.38. Round your answer to one (1) decimal place.
GuDViN [60]

Answer:

7172.6

Step-by-step explanation:

7 0
2 years ago
Solve for x math question
Colt1911 [192]

Square both sides

9(x + 2) = x + 4

Expand

9x + 18 = x + 4

Subtract x from both sides

9x + 18 - x = 4

Simplify 9x + 18 - x to 8x + 18

8x + 18 = 4

Subtract 18 from both sides

8x = 4 - 18

Simplify 4 - 18 to -14

8x = -14

Divide both sides by 8

x = -14/8

Simplify 14/8 to 7/4

<u>C. x = -7/4</u>

8 0
3 years ago
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