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3 years ago

Which of these mappings is a function?

Mathematics

1 answer:

strojnjashka [21]3 years ago

6 0

Answer:

Step-by-step explanation:

My power of guesssing :)

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Which verbal expression best describes the algebraic expression 2x ÷ 4?

expeople1 [14]

(2x) / 4 ......The quotient of 2 times some number and four

3 0

3 years ago

Read 2 more answers

Divide 1 hour in the ratio 1 : 9 : 10

olganol [36]

Answer:

3 minutes; 27 minutes; 30 minutes

Step-by-step explanation:

Let the common multiplier of the given ratios be x. So, the ratios 1: 9 : 10 will become x, 9x and 10x respectively.

Therefore,

$x + 9x + 10x = 1 \: hour \\ \\ 20x = 60 \: minutes \\ \\ x = \frac{60 \: minutes}{3} \\ \\ x = 3 \: minutes \\ \\ 9x = 9 \times 3 = 27 \: minutes \\ \\ 10x = 10 \times 3 = 30 \: minutes$

Thus, 1 hour in the ratio 1 : 9 : 10 can be divided as:

3 minutes; 27 minutes; 30 minutes

5 0

2 years ago

Which strategies can be used to solve this problem?

vladimir2022 [97]

You want total number made in 4 m onths, so adding all numbers is correct, but it is per 1 month, so multiply by 2

A because you need brain for most problems
D works

pick A and D

8 0

3 years ago

Solve the following inequality: -20 < 4 - 2x<br> A. 8 >x<br> B. 8 C. 12 > x<br> D. 12

Mama L [17]

Answer:

-20 < 4 - 2x (subtract 4 from both sides)

-24 < -2x (divide each side by -2)

12> x (when you divide by a negative number, the inequality flips)

x< 12 ( I always put it so x is first)

so the answer is C

6 0

2 years ago

Tell whether the angles are adjacent or vertical. Then find the value of $x$ .

boyakko [2]

Answer:

they are adjacent angles

Step-by-step explanation:

for adjacent angles

${(x + 3)}^{o} = {84}^{0} \\ x = 84 - 3 \\ x = 81$

7 0

2 years ago