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3 years ago

Help me with this problem please

Mathematics

2 answers:

labwork [276]3 years ago

6 0

Answer:

-15

Step-by-step explanation:

Order of Operations: BPEMDAS

1. Brackets

2. Parenthesis

3. Exponents

4. Multiplication

5. Division

6. Addition

7. Subtraction

Left to Right

Step 1: Write expression

3² - 3 · [(5² - 9) ÷ 2]

Step 2: Brackets Parenthesis Exponents

3² - 3 · [(25 - 9) ÷ 2]

Step 3: Brackets Parenthesis Subtraction

3² - 3 · [16 ÷ 2]

Step 4: Brackets Division

3² - 3 · 8

Step 5: Exponents

9 - 3 · 8

Step 6: Multiplication

9 - 24

Step 7: Subtraction

-15

Ymorist [56]3 years ago

5 0

Answer:

-15

Step-by-step explanation:

3^2 - 3 x [(5^2 - 9) / 2 ]

9 - 3 x [(25 - 9) / 2]

9 - 3 x (16/2)

9 - 3 x 8

9 - 24

-15

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Pleased help thankssss

galben [10]

Answer:

Step-by-step explanation:

The square of y would look like y^2 and decreased means subtraction

So the equation now y^2-

the quotient of 8 and y would be 8/y

The full equation is y^2-8/y

6 0

3 years ago

Solve the following new equation

mixer [17]

Answer:

<h3>x = 1.54 or x = - 4.54 to 2 decimal places</h3>

Step-by-step explanation:

x² + 3x - 7 = 0

Using the quadratic formula

a = 1 b = 3 c = - 7

$x = \frac{3 ± \sqrt{ {3}^{2} - 4(1)( - 7) } }{2(1)} \\ x = \frac{ - 3± \sqrt{9 + 28} }{2} \\ \\ x = \frac{ -3 ± \sqrt{37} }{2} \\ \\ x = \frac{ - 3 + \sqrt{37} }{2} \: \: \: \: \: or \: \: \: x = \frac{ - 3 - \sqrt{37} }{2} \\ \\ x = 1.54 \: \: \: or \: \: x = - 4.54$

Hope this helps you

7 0

3 years ago

Zach is 3 years older than twice his sister Michelle's age. Let m represent Michelle's age. Write an expression in terms of m to

dsp73

Zach is 3 yrs older then twice his sister (m)

zack is : 2m + 3

4 0

3 years ago

Read 2 more answers

Belvedere climbs a 25-meter tower to ride a straight water slide. After

ahrayia [7]

Answer:

28.7

Step-by-step explanation:

a^2 + b^2 = c^2

25^2 + 14^2 = 821

Square root of 821 is 28.7.

3 0

2 years ago

JK= 4x+3,<br> JL= 47, <br> KL= 9x+5<br> Find KL

Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

JK + KL = JL

(4x + 3) + (9x + 5) = 47

4x + 9x = 47 - 3 - 5

13x = 39

x = 39 / 13

x = 3

4 0

3 years ago