3 years ago

Help help help help pls

Mathematics

1 answer:

Yanka [14]3 years ago

3 0

Answer:

x - 3 > 10

Step-by-step explanation:

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Brrunno [24]

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3 years ago

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How to find the inverse of a function

Studentka2010 [4]

Switch the x and the y and solve for y
eg inverse of 2y= 3x+1
swith x and y
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3 years ago

Find the value of x to the nearest tenth.

nlexa [21]

Answer:

x = 14.7

Step-by-step explanation:

Using the sine rule

$\frac{a}{sin(A)} = \frac{b}{sin(B)} = \frac{c}{sin(C)}$

Substitute the given values.

$\frac{7}{sin(20)} = \frac{x}{sin(46)}$

Rearrange the equation to get x on it's own.

$\frac{7sin(46)}{sin(20)} = x$

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8 0

3 years ago

If a person invested half of her money at 9% and half at 7% and received $160 interest, find the total amount of money invested.

mr Goodwill [35]

Answer:

$2000

Step-by-step explanation:

let x be the money she invested

lets assume this was for 1 year

0.09(x/2) + 0.07(x/2) = 160

multiply each side by 2 to cancel the denominators:

0.09x + 0.07x = 320

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3 years ago

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F (x) = |x + 3| -1 . Find the average rate of change from x = -6 to x = 8

Elenna [48]

Average rate of change is (f(8) - f(-6))/(8 - (-6)) = ((|8 + 3| -1) - (|-6 + 3| -1))/(8 + 6) = ((|11| -1) - (|-3| -1))/14 = ((11 - 1) - (3 - 1))/14 = (10 - 2)/14 = 8/14 = 4/7

3 0

2 years ago