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3 years ago

H - 20/j = k solve for j

Mathematics

1 answer:

mina [271]3 years ago

4 0

Answer: j = 20/k-h

Step-by-step explanation: Multiply to remove your variable from your denominator.

I hope this helps you out.

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An equation is shown below: 5(2x-8) +15 = -15 write the steps you will use to solve the equation and explain each step

faust18 [17]

Answer:

5(2x-8)+15=-15

10x-40+15=-15

10x-25=-15

+25 +25 (add 25 to both sides)

____________

10x=10

divide by 10 on both sides

x=1

6 0

3 years ago

Read 2 more answers

Negative 5 (2 1/6) equals.

mr Goodwill [35]

Answer: -65/6

Step-by-step explanation:

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2 years ago

!!!Please help will give the brainliest, and please do not put in a silly answer because you want some points or I will report y

Amanda [17]

Answer:

In short, they are all quadrilaterals.

Step-by-step explanation:

Rectangle:

- Every angle equals 90 degrees

- Opposite sides are equal and parallel

Square:

- Every angle equals 90 degrees

- Opposite sides are equal and parallel

- Diagonals within the square are perpendicular

Parallelogram:

- Opposite sides are equal and parallel

- Opposite angles are equal

- Any two angles next to each other have to equal 180 degrees, since it would be a line

Rhombus:

- Opposite angles are equal

- All sides are equal

- Opposite sides are parallel

- Diagonals within the square are perpendicular

- Any two angles next to each other have to equal 180 degrees, since it would be a line

Trapedzoid:

- There is only one pair of parallel lines

Kite:

- There are two pairs of equal signs

- There are two equal angles

- You can look at it like two equal triangles glued together

Really hope this helped you!

7 0

3 years ago

Write down the exact value of: a) cos 90 b) sin 90 c) tan 0

viktelen [127]

Answer:

The exact value of

cos90 is 0

sin90 is 1

tan90 is indeterminate.

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3 years ago

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A culture started with 5,000 bacteria. After 2 hours, it grew to 6,500 bacteria. Predict how many bacteria will be present after

lesya [120]

This can be expressed as exponential growth of the form:

f=ir^t, f=final amount, i=initial amount, r=common ratio (rate), t=time

In this case we are given the point (2, 6500) and i=5000 so we can solve for the rate...

6500=5000r^2 divide both sides by 5000

1.3=r^2 take the square root of both sides and note that we know r>0

r=1.3^(1/2) so our equation becomes:

f=5000(1.3)^(1/2)^t and knowing that (a^b)^c=a^(b*c) we can say:

f=5000(1.3)^(t/2) so for t=18

f=5000(1.3)^9

f≈53022 (to nearest whole bacteria)

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3 years ago