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2 years ago

Convert 0.4 J to kJ. Please show working

Mathematics

2 answers:

VLD [36.1K]2 years ago

8 0

0.0004. Just like what the other comment said, divide the value of energy by 1000

dybincka [34]2 years ago

7 0

Answer:

0.0004

Step-by-step explanation:

divide the energy value by 1000

0.4/1000

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How many total necklaces can Maria own?

Sonbull [250]

Answer:

Step-by-step explanation:

She can buy 46 more and she has three, so she can own 49

8 0

2 years ago

Read 2 more answers

4. If DF = 9x - 39, find EF. Help I’m so confused!!!!

topjm [15]

Answer:

EF =58

Step-by-step explanation:

from the illustration,

EF =DF - DE

given that DF =9x-39 , DE =47 EF=3x +10

substitute them into the formula,

3x +10=9x-39 - 47

solving for x

3x +10 =9x -86

grouping like terms

3x - 9x =-86 -10

-6x=-96

dividing through by -6

 $\frac{ - 6x}{ - 6} = \frac{ - 96}{ - 6}$ 

 $x = \frac{96}{6}$ 

 $x = 16$ 

but EF=3x+10

substitute x=16 into it to get the EF

EF= 3(16)+10

EF=48+10

EF=58

6 0

2 years ago

Read 2 more answers

3/(5i) simplify please

LuckyWell [14K]

Answer:

- $\frac{3}{5}$ i

Step-by-step explanation:

Given

$\frac{3}{5i}$

Multiply numerator/ denominator by i

= $\frac{3i}{5i^2}$ [ i² = - 1 ]

= $\frac{3i}{-5}$

= - $\frac{3}{5}$ i

7 0

2 years ago

Read 2 more answers

a biologist counted 15 squirrels in 3 acres of forest. based on that data how many squirrels would be expected yo inhabit a 275

VLD [36.1K]

Answer:

Step-by-step explanation:

275/3=91.6 recurring

91.6 recurring x 15= 1375

8 0

3 years ago

Natalie consumes only apples and tomatoes. Her utility function is U(x, y) = x 2y 8 , where x is the number of apples consumed a

Kamila [148]

Answer:

16 apples.

Step-by-step explanation:

$U(x, y) = x^2y^8$

$MU_x =\frac{\partial U}{\partial x} = 2xy^8\\MU_y = \frac{\partial U}{\partial x} = 8x^2y^7\\$

Price of apples, Px=$4

Price of tomatoes, Py=$3

Ratio of their Marginal Utilities

$\frac{MU_x}{MU_y} = \frac{Px}{Py}$

$\frac{y}{4x} = \frac{4}{3}$

$y=\frac{16x}{3}$

Since Natalie’s income is $320

320 = xPx+yPy

$320=4x + 3*\frac{16x}{3} \\320= 4x+16x = 20x\\x=\frac{320}{20} = 16\\Also\\y=\frac{16x}{3}=\frac{16X16}{3}=\$85.33$

Since x=16, Natalie will consume 16 apples.

6 0

2 years ago