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3 years ago

What is z over 3 = 20

Mathematics

1 answer:

atroni [7]3 years ago

7 0

Answer:

z = 60

Step-by-step explanation:

z/3 = 20. (Multiply both sides by 3 to isolate ‘z’)

20 • 3 = 60

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Work out the balance for £240 invested for 20 years at 7% per annum

Luda [366]

Step-by-step explanation:

It depends in the type on interest

Simple Interest

PxRxT

£240 x 0.07x 3 = £50.4

£240 + £50.4 = £290.4

Compound Interest

Px(1+R)^T

£290.4 x (1 + 0.07)³ = £355.7524872= €355.76

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3 years ago

In the bag, there are 19 green marbles for every 11 blue marbles. What is the ratio of green marbles to total marbles?

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Answer:

19;30

Step-by-step explanation:

Adding them together is the total

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2 years ago

Which expression is equivalent to 3√x5y<br>what is it?

daser333 [38]

Answer: 3x^2 √xy

Step-by-step explanation:

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3 years ago

Can someone help me, please and thank you? I'll give BRAINLEST to the person who gets it right!!!

dmitriy555 [2]

Answer:

x = - 4

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5 0

3 years ago

Read 2 more answers

Write the slope-intercept form of the equation of the line that is perpendicular to and passes through Point X. Show all work fo

Semmy [17]

Answer:

$y =\dfrac{12}{5}x + 22$

Step-by-step explanation:

Slope-intercept form of line:

First find the slope of the line AB. ie, m

Slope of the perpendicular line = -1/m

(2 , 3) ⇒ x₁ = 2 & y₁ = 3

(-10, 8) ⇒ x₂ = -10 & y₂ = 8

$\boxed{Slope=\dfrac{y_2-y_1}{x_2-x_1}}$

$= \dfrac{8-3}{-10-2}\\\\=\dfrac{5}{-12}\\\\=\dfrac{-5}{12}$

$\sf slope \ of \ the \ perpendicular \ line \ m_1 = \dfrac{-1}{m}= -1 \ \div \dfrac{-5}{12}$

$\sf = -1 * \dfrac{12}{-5}=\dfrac{12}{5}$

Equation of the required line: y = mx + b

$y =\dfrac{12}{5}x+b$

The line passes through (-5 , 10). Substitute in the above equaiton,

$10 =\dfrac{12}{5}*(-5) + b\\\\ 10 = (-12) + b\\\\$

10 + 12 = b

b = 22

Equation of the line:

$y =\dfrac{12}{5}x + 22$

3 0

2 years ago