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3 years ago

The x-intercept of 2x + 3y = 12 is (0, 4). True or false

Mathematics

1 answer:

notsponge [240]3 years ago

5 0

True but idk fr just use google

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Using the side lengths of △PQR and △STU, which angle has a sine ratio of 4/5?

marishachu [46]

Given the two triangles, and the sine ratio formula is equal to:

Sin(x) = O/H

Where x is one angle of the triangle

O is the opposite side of the angle x

H is the hypotenuse of the triangle

To solve this we have to fine O/H = 4/5

So the answer is

Sin (P) = 16/20 = 4/5

<span>So angle P has the sine ratio of 4/5</span>

8 0

3 years ago

Read 2 more answers

Differentiate x^2 e^x logx

zimovet [89]

Product rule:

$\dfrac{\mathrm d}{\mathrm dx}(x^2e^x\log x)$

$=\dfrac{\mathrm d(x^2)}{\mathrm dx}e^x\log x+x^2\dfrac{\mathrm d(e^x)}{\mathrm dx}\log x+x^2e^x\dfrac{\mathrm d(\log x)}{\mathrm dx}$

Power rule:

$\dfrac{\mathrm d(x^2)}{\mathrm dx}=2x$

The exponential function is its own derivative:

$\dfrac{\mathrm d(e^x)}{\mathrm dx}=e^x$

Assuming the base of $\log x$ is $e$ , its derivative is

$\dfrac{\mathrm d(\log x)}{\mathrm dx}=\dfrac1x$

But if you mean a logarithm of arbitrary base $b$ , we have

$y=\log_bx\implies x=b^y=e^{y\ln b}\implies1=e^{y\ln b}\ln b\dfrac{\mathrm dy}{\mathrm dx}$

$\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{e^{-y\ln b}}{\ln b}=\dfrac1{b^y\ln b}$

$\implies\dfrac{\mathrm d(\log_bx)}{\mathrm dx}=\dfrac1{x\ln b}$

So we end up with

$2xe^x\log x+x^2e^x\log x+\dfrac{x^2e^x}x$

$=xe^x(2\log x+x\log x+1)$

8 0

3 years ago

XYZ Toys makes a ec 4- Me Baby Doll for $10.40. They mark up the cost by 55%. What is the selling price for the Feed-Me Baby Dol

vladimir1956 [14]

Answer:

$16.12

Step-by-step explanation:

55% of $10.40 = 0.55 × $10.40 = $5.72

$10.40 + $5.72 = $16.12

8 0

2 years ago

Help

alisha [4.7K]

Answer:

a. $x^{2} + 3y^{3}$

b. $3y^{3} -6$

c. $5x -3$

d. -6t - 5

Step-by-step explanation:

When a number has the same variable as another, you can add or subtract them

So for the first one, you can do

$5x^{2} -4x^{2} = 1x^{2} = x^{2}$

(But don't forget the $3y^{3}$ !)

So it is:

$x^{2} + 3y^{3}$

Continue this process for the rest of them

7 0

2 years ago

Is 2/5 and 8/20 equivalent

dolphi86 [110]

Yes!
explanation:
8 divided by 4 equals 2 and 20 divided by 4 is 5

4 0

2 years ago

Read 2 more answers