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KengaRu [80]
3 years ago
8

Pleaseeeee help me with number 7 I will give Brainly to whoever comments the answer right

Mathematics
1 answer:
natali 33 [55]3 years ago
6 0

Answer:

- to find r3 multiply 1700 by itself 3 times

- r3 is 4913000000

- multiply by pi

- the units are kilo meters cubed

Step-by-step explanation:

ugh i suck at math but here goes, sorry if it was wrong :)

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Twice the sum of a number and 400. Translate the verbal expression into an algebraic expression plz
djyliett [7]

Answer:

(a+b) ^2=400

Step-by-step explanation:

Follow me for more answers If you like my way of solving

4 0
2 years ago
What are the coordinates of the image of vertex G after a reflection across the line y = x?​
Yuliya22 [10]

Answer:

The coordinates of the image of vertex G are (-5, 4)

Step-by-step explanation:

Let us revise some cases of reflection

  • If the point (x, y) reflected across the x-axis , then its image is (x, -y)
  • If the point (x, y) reflected across the y-axis , then its image is (-x, y)
  • If the point (x, y) reflected across the line y = x , then its image is (y, x)
  • If the point (x, y) reflected across the line y = -x , then its image is (-y, -x)

From the given figure

∵ The line of the reflection is y = x

→ That means we will switch the coordinates of the point to find its image

∵ The coordinates of vertex G are (4, -5)

∴ The x-coordinate = 4 and the y-coordinate = -5

→ Switch the two coordinates

∴ The coordinates of its image G' are (-5, 4)

∴ The coordinates of the image of vertex G are (-5, 4)

7 0
2 years ago
What are the zeros of the function f(x) = x4 − x2 − 2?
goblinko [34]

Answer:

x = ± \sqrt{2} , x = ± i

Step-by-step explanation:

f(x) = x^{4} - x² - 2

to find the zeros , equate f(x) to zero , that is

x^{4} - x² - 2 = 0

using the substitution u = x² , then

u² - u - 2 = 0 ← in standard form

(u - 2)(u + 1) = 0 ← in factored form

equate each factor to zero and solve for u

u - 2 = 0 ⇒ u = 2

u + 1 = 0 ⇒ u = - 1

convert u back into terms of x

x² = 2 ( take square root of both sides )

x = ± \sqrt{2}

x² = - 1 ( take square root of both sides )

x = ± \sqrt{-1} = ± i

8 0
2 years ago
The right rectangular pyramid shown below has a square base. What shape is the cross section?
goblinko [34]
The cross section is a trapezoid.
8 0
3 years ago
What is the measure of angle K in degrees?
maxonik [38]
The measure is 30° degrees
5 0
3 years ago
Read 2 more answers
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