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4 years ago

Find the length of X.

Mathematics

1 answer:

kobusy [5.1K]4 years ago

8 0

$\frac{21}{x}=\frac{30}{21}\\30\cdot\ x=21\cdot21\\30x=441\ /\ :\ 30\\x=14.7$

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Which is equivalent to this expression? 2/150 + 3/75

Lesechka [4]

Answer:

Step-by-step explanation:

$\frac{2}{150}$ First reduce this to lowest term

$\frac{2}{150}=\frac{1}{75}\\\\\frac{2}{150}+\frac{3}{75}=\frac{1}{75}+\frac{3}{75}\\\\=\frac{1+3}{75}=\frac{4}{75}\\$

7 0

4 years ago

Can you just give me the equation to it?

kenny6666 [7]

Well, they would need $103,322 more to break even so, they would need at least $103,323 to make a profit.

8 0

3 years ago

Read 2 more answers

Pleaseee help meeeeeeeeeeee

grandymaker [24]

48,x and x all lie on a straight line sooo 180-48=2x
132=2x
132/2=x
66=x
X=66

4 0

3 years ago

What 2 numbers divide to get 375 while multiplying to equal 38.4?

Rus_ich [418]

Answer:

Well, 375 is a composite number.

Prime factorization: 375 = 3 x 5 x 5 x 5, which can be written 375 = 3 x (5^3)

The exponents in the prime factorization are 1 and 3.

Factors of 375: 1, 3, 5, 15, 25, 75, 125, 375.

Factor pairs: 375 = 1 x 375, 3 x 125, 5 x 75, or 15 x 25. Good Luck!

5 0

3 years ago

Let z = ln(x 2 + y), x = ret . and y = ter . Use the Chain Rule to compute ∂z ∂r and ∂z ∂t at the point where (r, t) = (1, 2).\

Natali [406]

By the chain rule,

$\dfrac{\partial z}{\partial u}=\dfrac{\partial z}{\partial x}\dfrac{\partial x}{\partial u}+\dfrac{\partial z}{\partial y}\dfrac{\partial y}{\partial u}$

where $u\in\{r,t\}$ .

We have component partial derivatives

$\dfrac{\partial z}{\partial x}=\dfrac{2x}{x^2+y}=\dfrac{2re^t}{r^2e^{2t}+te^r}$

$\dfrac{\partial z}{\partial y}=\dfrac1{x^2+y}=\dfrac1{r^2e^{2t}+te^r}$

$\dfrac{\partial x}{\partial r}=e^t$

$\dfrac{\partial x}{\partial t}=re^t$

$\dfrac{\partial y}{\partial r}=te^r$

$\dfrac{\partial y}{\partial t}=e^r$

Putting the appropriate pieces together and setting $(r,t)=(1,2)$ , we get

$\dfrac{\partial z}{\partial r}(1,2)=\dfrac{2e^3+2}{e^3+2}$

$\dfrac{\partial z}{\partial t}(1,2)=\dfrac{2e^3+1}{e^3+2}$

3 0

3 years ago

Find the length of X.​

Find the length of X.