Help me please :) I’m not sure what else to say lol

Mathematics

2 answers:

kenny6666 [7]2 years ago

4 0

Answer:

x=-8, x=1/4, x=5.

Step-by-step explanation:

The degree is 3, so there must be 3 roots.

factor: x^2(4x-1)+3x(4x-1)-40(4x-1)=0

=(4x-1)(x^2+8x-5x-40)=0

=(4x-1)(x+8)(x-5)=0

x=1/4, -8, 5

vodomira [7]2 years ago

3 0

X = 1/4, 5, -8

Hope this helps!

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strojnjashka [21]

Answer:

Step-by-step explanation:

3x - 4y = 13 (1)

2x + y = 5 (2)

——————

3x - 4y = 13

4(2x + y = 5) (2) times 4

——————-

3x - 4y = 13

8x + 4y = 20

——————-

11x = 33

x = 33/11

x = 3

Plug x = 3 in (2):

2(3) + y = 5

6 + y = 5

y = 5-6

y = -1

Thus, x = 3 and y = -1

4 0

2 years ago

The height of one square pyramid is 12 m. A similar pyramid has a height of 6 m. The volume of the larger pyramid is 400 m3. Det

valentinak56 [21]

A) Scale factor of the smaller pyramid to the larger pyramid in simplest form:
6 m / 12 m = 1/2

b) Ratio of the areas of the bases of the smaller pyramid to the larger pyramid:
(1/2)^2 = 1/4 

c) Ratio of the volume of the smaller pyramid to the larger:
(1/2)^3 = 1/8 

d) Volume of the smaller pyramid:
(1/8) * 400 m^3 = 50 m^3

4 0

3 years ago

What is the C of a circle that has a radius of 4.5

Jlenok [28]

Step-by-step explanation:

$C = 2\pi \: r \\ = 2 \times 3.14 \times 4.5 \\ = 3.14 \times 9 \\ =28.26 \: units$