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3 years ago

Solve using the correct order of operation 5x(11 x 9 + 7squared) + 4

Mathematics

1 answer:

laila [671]3 years ago

6 0

Answer:

i love you :)

Step-by-step explanation:

5 × ( 99 + 7² ) + 4

5 × ( 148 ) + 4

740 + 4

744

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Solve the system: 2/x - 3/y =-5; 4/x + 6\y =14

sertanlavr [38]

The solution is $x = 2 \text{ and } y = \frac{1}{2}$

Solution:

Let us assume,

$a = \frac{1}{x}\\\\b = \frac{1}{y}$

Given system of equations are:

$\frac{2}{x} - \frac{3}{y} = -5$

$\frac{4}{x} + \frac{6}{y} = 14$

Rewrite the equation using "a" and "b"

2a - 3b = -5 ------------ eqn 1

4a + 6b = 14 -------------- eqn 2

Let us solve eqn 1 and eqn 2

Multiply eqn 1 by 2

2(2a - 3b = -5)

4a - 6b = -10 ------------- eqn 3

Add eqn 2 and eqn 3

4a + 6b = 14

4a - 6b = -10

( - ) --------------------

8a = 4

$a = \frac{4}{8}\\\\a = \frac{1}{2}$

Substitute a = 1/2 in eqn 1

$2(\frac{1}{2}) -3b = -5\\\\1 - 3b = -5\\\\3b = 6\\\\b = 2$

Now let us go back to our assumed values

Substitute a = 1/2 in assumed values

$a = \frac{1}{x}\\\\\frac{1}{2} = \frac{1}{x}\\\\x = 2$

Substitute b = 2 in assumed value

$b = \frac{1}{y}\\\\2 = \frac{1}{y}\\\\y = \frac{1}{2}$

Thus the solution is $x = 2 \text{ and } y = \frac{1}{2}$

3 0

3 years ago

-6=n/2-10 what is the answer

Arturiano [62]

1) Add 10 on both sides

-6+10= (n/2)-10+10
4= n/2

2) multiplying 2 on both sides

4(2)= (n/2)(2)

8=n

Thus the answer is 8 for n.

Hope this helps!

3 0

3 years ago

The Ratio of red jackets to blue jackets is 3 to 4. If there were 36 blue jackets in the closet, how many red jackets would be t

oksian1 [2.3K]

Answer:

Step-by-step explanation:

The 4 part of the ratio refers to 36 blue jackets.

Divide 36 by 4 to find the value of one part of the ratio

36 ÷ 4 = 9 ← value of 1 part of the ratio, then

3 parts = 3 × 9 = 27 ← number of red jackets

3 0

3 years ago

Choose all that correctly graph the exponential function.

Maslowich

Answer:

me puedes ayudar este deber

7 0

2 years ago

A profit of $9 in integers

DedPeter [7]

Because the situation represents a profit, the integer is 9.

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3 years ago

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