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3 years ago

Help pls, do and workout number 5

Mathematics

1 answer:

Vlada [557]3 years ago

8 0

322/14 = 23

322 / 14

14 cannot go into 3, so 14 can go into 32 twice,

32-28 = 4 drop the 2

42. 14 can go into 42 3 times

42-42 = 0

Your answer is 23

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How did the new crown arise.

rjkz [21]

It arised either by the death of the previous king or by overthrowing previously known monarchy

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2 years ago

-.25×-3-(1.5×+1.4 answer

Blababa [14]

Answer:

−1.5x+0.65

Step-by-step explanation:

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3 years ago

A solid toy is in the form of a hemisphere surmounted by a right circular cone. The height of the cone is 4 cm and diameter of t

docker41 [41]

Answer:

See below ~

Step-by-step explanation:

Things to Find

Volume of Toy
Difference of Volumes in Cube and Toy
Total Surface of Toy

Volume of Toy

Volume of Hemisphere + Volume (Cone)
2/3πr³ + 1/3πr²h
1/3πr² (2r + h)
1/3 x 3.14 x 16 (8 + 4)
1/3 x 50.24 x 12
50.24 x 4
200.96 cm³

Volume of Circumscribing Cube

Edge length is same as diameter
V = (8)³
V = 512 cm³

Difference in Volume

512 - 200.96
311.04 cm³

Slant height of cone

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l² = 32
l = 4√2 cm = 5.6 cm

Surface Area of Toy

CSA (hemisphere) + CSA (Cone)
2πr² + πrl
πr (2r + l)
3.14 x 4 (8 + 5.6)
12.56 x 13.6
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3 0

2 years ago

Solve each equation (quadratic pattern)

dusya [7]

Answer: x = 2

Step-by-step explanation:

$2^{2x}-2^x-12=0\\\\\text{Let u = }2^x\\\\u^2-u-12=0\\(u-4)(u+3)=0\\\\u-4=0\quad and\quad u+3=0\\u=4\qquad and\quad u=-3\\\\\text{Substitute u with }2^x\\2^x=4\qquad and \quad 2^x=-3\\2^x=2^2\quad and\quad \text{not possible}\\\boxed{x=2}$

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Answer: x = 0

Step-by-step explanation:

$3^{2x}+3^{x+1}-4=0\\\\3^{2x}+3^x\cdot3^1-4=0\\\\\text{Let u = }3^x\\u^2+3u-4=0\\\\(u+4)(u-1)=0\\\\u+4=0\quad and\quad u-1=0\\u=-4\qquad and\quad u=1\\\\\text{Substitute u with }3^x\\3^x=-4\qquad and\quad 3^x=1\\\text{not possible}\ and\quad 3^x=3^0\\.\qquad \qquad \qquad \qquad \boxed{x=0}$

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Answer: No Solution

Step-by-step explanation:

$4^x+6\cdot 2^x+8=0\\\\2\cdot 2^x+6\cdot 2^x+8=0\\\\\text{Let u = }2^x\\2u+6u+8=0\\8u+8=0\\8u=-8\\u=-1\\\\\text{Substitute u with }2^x\\2^x=-1\\\text{not possible}$

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Answer: No Solution

Step-by-step explanation:

$9^x=3^x-6\\\\3\cdot 3^x=1\cdot 3^x-6\\\\\text{Let u = }3^x\\\\3u=u-6\\2u=-6\\u=-3\\\\\text{Substitute u with }3^x\\3^x=-3\\\text{not possible}$

6 0

3 years ago

SOLVE for me. All multiple choice

tester [92]

9: B right

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11: B right

12: B right

I hope they are right! Sorry if they are not!

6 0

3 years ago