3 years ago

Help please, i need it asap. tyty

Mathematics

1 answer:

mylen [45]3 years ago

8 0

Answer:

Step-by-step explanation:

$\frac{3}{x}$ = $\frac{2}{5}$

2x = 15

x = 7.5

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Can some please help me I will mark u brilliant

brilliants [131]

Question 2: -4/3

Question 3: -7/20

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2 years ago

The cone in the figure below has a volume of 722 cubic centimeters and a height of 6

azamat

Answer:

r = 10.72 cm

Step-by-step explanation:

h = 6 cm

Volume of cone = 722 cubic cm

$\frac{1}{3}\pi r^{2}h=722\\\\\frac{1}{3}*3.14*r^{2}*6=722\\\\r^{2}=\frac{722*3}{3.14*6}\\\\r^{2}=114.97\\\\r = \sqrt{114.97}\\\\r = 10.72$

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mote1985 [20]

30 for the first and 83.5 for the second

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2 years ago

Solve the formula: V = 1/2 (bh) H for h

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Times both sides b 2
2V=(bh)H
remember associative property
(ab)c=a(bc)
and
ab=ba
so
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8 0

3 years ago

Please Help practice #3

algol [13]

Answer:

(2x+5)(4x+3)

Step-by-step explanation:

Given the expression 8x^2 + 26x + 15

Factorize

8x^2 + 26x + 15

= 8x^2 + 6x + 20x + 15

= 2x(4x+3) + 5 (4x+3)

= (2x+5)(4x+3)

Hence the factored form of the expression is (2x+5)(4x+3)

5 0

3 years ago