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Marina86 [1]
3 years ago
8

3x-2x(4y+5y-3) find the algebraic sum

Mathematics
1 answer:
IgorLugansk [536]3 years ago
3 0
3x-2x(4y+5y-3) \\ \\ 3x - 2x(9y - 3) \ / \ simplify \\ \\ 3x - 18xy + 6x \ / \ expand \\ \\ (3x + 6x) - 18xy \ / \ collect \ like \ terms \\ \\ 9x - 18xy \ / \ simplify \\ \\ Answer: \fbox {9x - 18xy}
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A container is 8/9 kg of berries is 2/3 full, how many kg can the container hold
mel-nik [20]

Answer:

1.33kg of berries

Step-by-step explanation:

A container is 8/9 kg of berries is 2/3 full, how many kg can the container hold

2/3 of a container = 8/9kg

To get the amount of kg the container can hold, we will write;

1 container = x kg

Divide both expressions

2/3 = 8/9x

Cross multiply

2 * 9x = 3*8

18x = 24

x = 24/18

x = 1.33kg

Hence the container will hold 1.33kg of berries

8 0
3 years ago
The angles of a triangle add up to 180 degrees. The second angle is 30 degrees larger than the smallest angle. The third angle i
Rudik [331]

Answer:

50

Step-by-step explanation:

first angle = x

second angle = x+30

third angle = 4x

x + (x+30) + 4x = 180

6x + 30 = 180

6x = 180 - 30

6x = 150

x = 150:6

x = 50

3 0
3 years ago
Find the value of x (6x-10)(6x+10)
Veronika [31]

Answer:

6x -10 + 6x + 10= 180

12x = 180

x = 15

6(15)-10= 90-10= 80

6(15)+10= 90+10=100

80+100=180°

7 0
3 years ago
I really need help with this
d1i1m1o1n [39]

The area of each pizza and cost per inch is $12.82 per square inches and $11.304 per square inches respectively.

<h3>How to solve area of a circle?</h3>

Large:

Diameter = 14 inches

Radius, r = 14 / 2

= 7 inches

Area = πr²

= 3.14 × 7²

= 3.14 × 49

= 153.86 square inches

Cost per inch = 153.86 square inches / 12

= 12.8216666666666

Approximately, $12.82 per square inches

Medium:

Diameter = 12 inches

Radius, r = 12/2

= 6 inches

Area = πr²

= 3.14 × 6²

= 3.14 × 36

= 113.04 square inches

Cost per inch = 113.04 square inches / 10

= $11.304 per square inches

Learn more about area of a circle:

brainly.com/question/15673093

#SPJ1

6 0
2 years ago
Growing up, I never got enough of my favorite side dishes. I even conducted a - survey to prove to my family that they should ma
Minchanka [31]

Answer:

63 people prefer mashed potatos

Step-by-step explanation:

18 divided by 2 is 9

7 multiplied by 9 is 63

:)

5 0
3 years ago
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