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3 years ago

Lechie has 21 crystals in her collection. Her brother Tomer has 7 crystals. How many more crystals does Lechie have than Tomer?

Mathematics

2 answers:

xxMikexx [17]3 years ago

6 0

14 more crystals than tomer. 21-7=14

azamat3 years ago

4 0

14 more crystals 21-7=14

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At a theme park, the admission price for children is $7 and the admission price for adults is $21. The total amount the theme pa

Gemiola [76]

Answer:

7x+21y=5439

x+y=305

Step-by-step explanation:

it's pretty self explanatory, right?

7 0

3 years ago

3a=1 What is a equal to?

miskamm [114]

Answer:

1/3

Step-by-step explanation:

3a = 1

/3 /3

a = 1/3

6 0

3 years ago

Read 2 more answers

The side of the parallelogram in the figure above are given in cm.

GrogVix [38]

solution

or, 2 x + y = 5 y - 8 being opposite side of

parallelogram

or , 2x =5 y - y - 8

or, 2x = 4 y - 8

or, x = 4y - 8/2

or,. x = 2y- 4

therefore, 2x + y is equal to 5 y - 8 Being the opposite side of a parallelogram

now,

3y + 2 x is equal to 4x - 3 being opposite side of a parallelogram

or, 3y + 2 x-4x = -3

or,. 3y -2x = -3

5 0

3 years ago

Y is a differentiable function of x. Choose the alternative that is the derivative dy / dx.

murzikaleks [220]

Differentiating both sides of

$x^3-y^3=1$

with respect to x yields (using the chain rule)

$3x^2 - 3y^2 \dfrac{\mathrm dy}{\mathrm dx} = 0$

Solve for dy/dx :

$3x^2 - 3y^2 \dfrac{\mathrm dy}{\mathrm dx} = 0 \\\\ 3y^2\dfrac{\mathrm dy}{\mathrm dx} = 3x^2 \\\\ \dfrac{\mathrm dy}{\mathrm dx} = \dfrac{3x^2}{3y^2} = \dfrac{x^2}{y^2}$

The answer is then D.

3 0

2 years ago

Tom deposits $1000 into a savings account. That earns 5% simple interest. He has this account for 7 years. How much does it cont

Arada [10]

Answer:

$1350

Step-by-step explanation:

5% of 1000 is 50

50x7 is 350

1000+350=1350

3 0

3 years ago