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1 year ago

A paint mix uses red and white paintin a ratio of 1:12.

Mathematics

1 answer:

levacccp [35]1 year ago

7 0

Answer:

(a).16.8 litres

(b).red-1.2 litres

white-14.3 litres

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Solve for missing angle.Justify and explain your calculations

myrzilka [38]

The missing angle would be 68 because the the triangles can be alternate exterior

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3 years ago

8.46 If 100 is decreased by a% and the result is decreased by b%, then what is the total percent decrease (in terms of a and b)?

Marysya12 [62]

Answer:

The total percent decrease is $a+b-\frac{a b}{100}$

Step-by-step explanation:

We are given with a word problem
We are asked to find the total percentage decrease
We can do this in two steps

Step 1: Finding the two percentage decrease

Step 2: Finding their difference

Step 1 of 2

Let the decrease by a% be 100-a

Then b% decrease is

$\begin{aligned}\frac{b}{100} \times(100-a) &=\frac{100 b-a b}{100} \\\frac{100 b}{100}-\frac{a b}{100} &=b-\frac{a b}{100}\end{aligned}$

Step 2 of 2

The percentage difference between the two percentages is,

$\begin{aligned}&(100-a)-\left(b-\frac{a b}{100}\right)=100-a-b+\frac{a b}{100} \\&100-a-b+\frac{a b}{100}=100-\left(a+b-\frac{a b}{100}\right)\end{aligned}$

Since 100 is the total percent $a+b-\frac{a b}{100}$ is the percentage decrease.

3 0

1 year ago

If triangle RST is within Quadrant 2 and csc T = 13/12, what is the value of cotT?

zhuklara [117]

Answer:

$\boxed {cot T = -\frac{5}{12}}$

Step-by-step explanation:

<u>Finding the missing side</u> :

x² = 13² - 12²
x² = 169 - 144
x = √25
x = 5

<u>Taking the cot value</u> :

cot T = adjacent / opposite
cot T = -5/12 (As cot is negative in Quadrant 2)

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1 year ago

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Can you please? Guys, my school blocked "non-official" pictures, so please, when you're asking questions, type the problem in yo

dexar [7]

Answer:

will do

Step-by-step explanation:

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2 years ago

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Which expression is equivalent to |x| > 9?

Aleksandr [31]

Answer:

Step-by-step explanation:

when you do the absolute value you take out the sign

x > 9

but with absolute value there is also a negative answer. and with the greater than sign it would switch to less than.

x < -9

8 0

2 years ago