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3 years ago

12

Please answer quickly:

2 answers:

julia-pushkina [17]3 years ago

8 0

You need to have variables one one side and constants on the other. ax - ax + by = c - ax by = c - ax by/b = (c - ax)/b y = (c - ax)/b

vredina [299]3 years ago

7 0

You said . . . . . ax + by = c

Subtract ' ax ' from each side . . . by = c - ax

Divide each side by ' b ' . . . y = (c - ax) / b

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Prove each statement that is true and ﬁnd a counterexample for each statement that is false. Assume all sets are subsets of a un

tekilochka [14]

Answer with Step-by-step explanation:

We are given that A, B and C are subsets of universal set U.

We have to prove that

$A\cap (B-C)=(A\cap B)-(A\cap C)$

Proof:

Let x $\in A\cap (B-C)$

Then $x\in A$ and $x\in(B-C)$

When $x\in ( B-C)$ then $x\in B$ but $x\notin C$

Therefore, $x\in( A\cap B)$ but $x\notin (A\cap C)$

Hence, it is true.

Conversely , Let $x\in(A\cap B)$ but $x\notin(A\cap C)$

Then $x\in A$ and $x\in B$

When $x\notin ( A\cap C)$ then $x\notin C$

Therefor, $x\in A\cap (B-C)$

Hence, the statement is true.

5 0

3 years ago

Round 607.5 to the nearest whole number.

kari74 [83]

608

607.5

.5 rounds up to 1

607+1=608

7 0

3 years ago

Read 2 more answers

Forty is no greater than the difference of a number and 2

GuDViN [60]

This can be written as:
$40 \leq n - 2$

"No greater than" does not necessarily mean less than, but it just means it cannot go over. So equal to or less than.

"The difference of a number and 2" can be represented as "n - 2"

If you were to solve this inequality, you would end up getting:
$42 \leq n$ or $n \geq 42$

Hope this helps! :)

8 0

4 years ago

Read 2 more answers

Find the missing angle. Find x

dolphi86 [110]

Answer: 20

Reason: They're opposite meaning they are the same when compared to the side

3 0

3 years ago

Find the outer perimeter of this figure.

stira [4]

Answer:

61.90

Step-by-step explanation:

12.2+14+14+6=46.2

of semi circle

circumference of semi circle = $\pi$ d

$\pi$ x10 = 10 $\pi$

semi circle so divide by 2 = 5 $\pi$

5 $\pi$ = 15.7

46.2 + 15.7 = 61.9

3 0

2 years ago