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katrin [286]
3 years ago
14

I need help with this question.

Mathematics
1 answer:
mars1129 [50]3 years ago
7 0

Step-by-step explanation:

area of ∆ ACB = 1/2× AB×CP

= 1/2× 16× 21 m²

=8×21m²

= 168m²

optionC

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3. 18 is 40% of what number?​
Mariulka [41]

#Lets just write x as the nunber you asked

x × 40/100 = 18

x = 18 : 40/100

x = 18 × 100/40

y = 1800/40

y = 45

<h3>Answer : 45</h3>
8 0
2 years ago
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-10 F is colder than -4 degrees?
Aleks04 [339]

Answer: yes, it is a smaller temperature, which means that is "colder"

Step-by-step explanation:

I guess that the question is:

Is -10°F colder than - 4°C?

Ok, when we have a temperature T in Celcius, the equation to transform this quantity to the Fahrenheit scale is:

T' = (T*9/5) + 32°

Replacing T by the temperature in celcius, we get:

T' = (-4°*9/5) + 32° = 24.8°F

This means that -4°C is equivalent to 24.8°F

And -10°F is a smaller value than 24.8°F (which mean that is colder)

This implies that -10°F is colder than -4°C

Then the statement is true.

4 0
3 years ago
Help pls thank you very much I picked one but I have no idea which one
Alecsey [184]

Answer:

42

Step-by-step explanation:

we could use inverse operation and multiply 7 by 6

6 0
2 years ago
Find the value of the expression 63 - 21 + (3 x 11)
bixtya [17]

Answer: First solve the parentheses using order of operations. Then add and subtract from left to right.

Demo:

(3 * 11) = 33

Equation now looks like:

63 - 21 + 33

63 - 21 = 42

Equation now looks like:

42 + 33

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The value of this expression is 75.

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Step-by-step explanation:

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