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Crank
3 years ago
15

Evaluate 6x + 3y - 4, if x = 20 and y = 2. ОА. 16 Ов. 20 Ос. 36 D 8

Mathematics
2 answers:
lord [1]3 years ago
4 0

6x + 3y - 4

6(20)+3(2)-4

Do the brackets first.

120+6-4

120+2

122

Answer is 122

fenix001 [56]3 years ago
3 0

Answer:

122

Step-by-step explanation:

6x + 3y - 4

6(20) + 3(2) - 4

120 + 6 - 4

126 - 4

122

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Evaluate 2^-4 pleaseee help asap
Alexxandr [17]

Answer:

1/16

Step-by-step explanation:

2^-4

We know that a^ -b = 1/ a^b

2^-4 = 1/2^4

2^4 =16

so 1/2^4 = 1/16

5 0
3 years ago
Read 2 more answers
Help quick please!!
Korolek [52]

Answer:

Difference of squares:

y^4−25

16x^2−81

Not difference of squares:

20m^2n^2−121

p^8−q^5

Step-by-step explanation:

y^4−25

(y²)² - 5²

16x^2−81

(4x)² - 9²

20m^2n^2−121

20 is not a perfect square

p^8−q^5

q⁵ is not a perfect square

3 0
3 years ago
Show all work to factor x^4 − 10x^2 + 9 completely.
elena-14-01-66 [18.8K]
(x-1)(x+1)(x-3)(x+3)

x²-y² formula


Mark brainliest please
4 0
2 years ago
No links or wrong answers please!! 55 points
juin [17]

The areas of the figures are 4(x + 1), 7(d + 4) and y(y + 3)

<h3>How to determine the total areas?</h3>

<u>The figure 1</u>

In this figure, we have

Length = x + 1

Width = 4

The area is calculated as:

Area = Length * Width

So, we have

Area = 4(x + 1)

<u>The figure 2</u>

In this figure, we have

Length = d + 4

Width = 7

The area is calculated as:

Area = Length * Width

So, we have

Area = 7(d + 4)

<u>The figure 3</u>

In this figure, we have

Length = y + 3

Width = y

The area is calculated as:

Area = Length * Width

So, we have

Area = y(y + 3)

Hence, the areas of the figures are 4(x + 1), 7(d + 4) and y(y + 3)

Read more about areas at:

brainly.com/question/24487155

#SPJ1

4 0
2 years ago
Carla earns $13 an hour cleaning house. How much will she earn if she works from 8:00 to 2:00?
Andreyy89
8pm to 2am, or 8am to 2pm, either way, Carla would've worked for 6 hours.

6*$13=$78

-----------

Carla would earn $78 if she were to clean for 6 hours.
4 0
3 years ago
Read 2 more answers
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