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Aloiza [94]
3 years ago
15

Help: Scientists think the _____ is a solid iron with a layer of liquid iron surrounding it.

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
3 0
<span>The inner core is made of solid iron, and it is surrounded by the liquid iron of the outer core. It is solid because the extreme pressure at the center of the earth prevents it from melting, despite the unimaginable temperatures.</span>
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Solve for x. Write both solutions, separated by a comma. 8x^2+7x-1=0
Ivan

Answer:

<h2>x = 1/8 , - 1</h2>

Step-by-step explanation:

8x² + 7x - 1 = 0

Rewrite 7x as a difference

That's

8x² + 8x - x - 1 = 0

Factorize

8x( x + 1) - ( x + 1) = 0

(8x - 1)( x + 1) = 0

8x - 1 = 0 x + 1 =0

8x = 1 x = - 1

x = 1/8

The solutions are

<h3>x = 1/8 , - 1</h3>

Hope this helps you

7 0
3 years ago
Find the value of y.<br> Picture below
olga2289 [7]

We have trapezoid with congruent legs.

30x + 11y = 2x + 3

28x +11y = 3

Also we have

30x + 11y = 12

We got 2 equations:

30x + 11y = 12

28x +11y = 3 (*-1) -----> -28x -11y = -3

30x + 11y = 12

<u> -28x -11y = -3</u>

2x = 9

x=9/2

30x + 11y = 12 ------> 30*9/2 +11y =12 ------> 135+11y =12, ---> 11y = - 123,

y= - 123/11

6 0
3 years ago
Help me with this problem
ryzh [129]
The answer is 60 since the other shape has same answer for that side
8 0
2 years ago
Read 2 more answers
Area of square= 625 m sq Perimeter =??
sveticcg [70]

Answer:

<u>100 m</u>

Step-by-step explanation:

<u>Given</u> :

  • Area of square = 625 m²

<u>#1) Finding the side length</u>

  • Area = (side length)²
  • ⇒ side length = √Area
  • ⇒ side length = √625
  • ⇒ side length = 25 m

<u>#2) Calculating perimeter</u>

  • Perimeter = Total length of the sides of the shape
  • Perimeter = 4 x side length [a square has 4 equal sides]
  • ⇒ Perimeter = 4 x 25
  • ⇒ Perimeter = <u>100 m</u>
5 0
2 years ago
Read 2 more answers
Solve for S<br><br> P=4s<br><br> Please answer!!!!
Karolina [17]

Answer:

b

Step-by-step explanation:

divide both sides of the equation by 4 to leave s by itself

6 0
3 years ago
Read 2 more answers
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