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3 years ago

HELP VERY QUICKLY!!!!!!

Mathematics

2 answers:

IrinaK [193]3 years ago

8 0

Answer:

4:3

Step-by-step explanation:

BRAINLY

please:)

NeX [460]3 years ago

4 0

Answer:

4:3

Step-by-step explanation:

4:3, there are 4 squares to 3 triangles i think this answers both questions.

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A metal cube has sides of length 4.5 cm, correct to the nearest 0.5 cm.

Romashka [77]

828 small spheres can be made from the metal.

Step-by-step explanation:

Side of the cube = 4.5cm

Volume = (a x a x a)

= (4.5 x 4.5 x 4.5)

= 91.125 cubic cm

Radius of the sphere = 3mm = 0.3 cm

Volume of 1 sphere = (4/3) π(r x r x r)

= (4/3) (3.14) (0.3 x 0.3 x 0.3)

= (4/3) (3.14) (0.027)

= 0.34/3

= 0.11 cubic cm

No. of spheres = 91.125/0.11

= 828.4

So, 828 small spheres can be made from the metal.

6 0

3 years ago

A culture of 1.75×1018 bacteria is in petri dish A. A culture of 6.25×1015 bacteria is in petri dish B. How many times greater i

insens350 [35]

Dish A has n₁ = 1.75 x 10¹⁸ bacteria.
Dish B has n₂ = 6.25 x 10¹⁵ bacteria.

Calculate n₁/n₂.
$\frac{n_{1}}{n_{2}} = \frac{1.75 \times 10^{18}}{6.25 \times 10^{15}} =0.28 \times 10^{18-15} = 0.28 \times 10^{3} =2.8 \times 10^{2}$

The number of times that the number of bacteria in dish A is greater than the number of bacteria in dish B is 2.8 x 10² in standard notation.

Answer: 2.8 x 10²

7 0

3 years ago

A pension fund owns 2,600 fewer shares in mutual stock funds than mutual bond funds. Currently, the stock funds sell for $14 per

enyata [817]

Answer:

19413 shares

24787 bonds

Step-by-step explanation:

Stock price = $14 p/s

Bond funds = $16 p/s

Value given = 134,600

2,600 fewer is given for stock

meaning 2.600 is more for bond

134,600 - (16 x 2600)=41600 combined equal shares

Each shares worth; 14+16 = 30

41600 / 30 = 1386.66667 amount combined

1386.66667 x 14 = 19413 shares

1386.66667 x 16 =22186.6667 + 2600 = 24787 bonds

7 0

3 years ago

Work out the value of 6 + 5 x 2 to the power of 2 - 9 ÷ 3 ?

4vir4ik [10]

-53.26 is the awser I think

7 0

3 years ago

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PLEASE HELP ILL GIVE BRAINLIEST!!!!

Annette [7]

The last one is correct.

4 0

3 years ago

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