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Misha Larkins [42]
3 years ago
6

PLEASE HELP!!!!!!! ( Calculate the value of the expression )

Mathematics
2 answers:
blondinia [14]3 years ago
8 0

Answer:

The correct answer is -76.

Step-by-step explanation:

The step-by-step solution is shown in the image provided here, I hope it will help.

Alona [7]3 years ago
5 0

Answer:

<h2>-75</h2>

Step-by-step explanation:

<h3 /><h3>4 (8 - 10 • 3) + 2³ - 5)</h3><h3>= 4 ( 8 - 30) + 2³ - 5)</h3><h3>= 4 (-22) + 2³ - 5)</h3><h3>= 4 (-22) + 8 - 5)</h3><h3>= -88 + 8 - 5</h3><h3>= -80 - 5</h3><h3>= -75</h3>

\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}

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2x + 6y= 8<br> 4x + 12y = 16
Korolek [52]

Answer:

x=0 , y=0

Step-by-step explanation:

2x +6y= 8 .....eqn 1

4x +12y= 16....eqn2

we multiply eqn 1 by 2.. because we want at least one variable to have the same coefficient so we can simply.

2x +6y =8... ×2

will give you 4x +12y = 16....eqn 3

so now we subtract eqn 2 from eqn 3

4x + 12y= 16

- 4x + 12y = 16

_____________

0 + 0 = 0

therefore x = 0 and y= 0

3 0
3 years ago
Mohal bought 20 chicken wings for $50.00. If Mohal spent $30.00, how many chicken wings did he buy
ELEN [110]

The number of chicken wings that Mohal can buy is 12.

<h3>How to calculate the cost?</h3>

It should be noted that Mohal bought 20 chicken wings for $50.00. The cost of each wing will be:

= Total amount / Number of chicken wings

= $50 / 20

= $2.50

When he spent $30.00, the number of wings will be:

= Amount / Cost per wing

= $30 / $2.50

= 12

There will be 12 chicken wings. This illustrates the proportion.

Learn more about cost on:

brainly.com/question/25109150

#SPJ1

7 0
1 year ago
Hi, how's everyone doing? I need help with these exponential equations, please. Thanks! :)​
Vesna [10]

Answer:

Step-by-step explanation:

1). 2^{x^{2} +2x}=\frac{1}{2}

  2^{x^{2} +2x}=2^{-1}

  Comparing exponents on both the sides.

  x² + 2x = -1

  x² + 2x + 1 = 0

  (x + 1)² = 0

  x = -1

2). 2^{x-3}=8^{x+1}

  2^{x-3}=(2^{3})^{x+1}

  2^{x-3}=(2)^{3(x+1)}

  By comparing exponents,

  x - 3 = 3(x + 1)

  x - 3 = 3x + 3

  3x - x = 3 + 3

  2x = 6

  x = 3

3). \sqrt{a^{5-k}}=a^{3-k}

   a^{\frac{5-k}{2}}=a^{3-k}

   By comparing exponents,

   \frac{5-k}{2}=3-k

   5 - k = 2(3 - k)

   5 - k = 6 - 2k

   2k - k = 6 - 5

    k = 1

4). 3^{x+3}=27^{(2x+6)}

    3^{x+3}=(3^3)^{2x+6}

    3^{x+3}=(3)^{3(2x+6)}

    By comparing exponents,

    x + 3 = 3(2x + 6)

    x + 3 = 6x + 18

    6x - x = 3 - 18

    5x = - 15

    x = -3

5). 5^{x-2}=1

    5^{(x-2)}=5^{0}

    x - 2 = 0

    x = 2

6 0
3 years ago
Use the graph to find the value if y = sin θ for the value if θ.
LekaFEV [45]
The answer is C ********************

7 0
3 years ago
Rachel is placing playing cards on a table by following these steps.
meriva
Rachel is placing playing cards on a table by following these steps.
Step 1: First she places one card in the middle of the table.
Step 2: Next she adds one more card directly to the left, to the right, and below the first card.
Step 3: Next she adds one more card directly to the left, to the right, above, and below the cards that were already on the table. The cards form the pattern shown.

a. If Rachel continues the same pattern, how many cards will be on the table after Rachel completes Step 4?
b. Write the first 6 terms of the sequence that represents the total number of cards on the table after each step.
c. Describe the pattern in the sequence.

7 0
3 years ago
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