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choli [55]
3 years ago
15

Plz help will mark you as brainliest(plz answer 42 and 43​

Mathematics
1 answer:
Lisa [10]3 years ago
3 0

Answer:

  • 41. D,
  • 42. B,
  • 43. A

Step-by-step explanation:

Sides are 120 m, 170 m, 250 m

<h3>41.</h3>

<u>S is the semi-perimeter and is equal to:</u>

  • s = (a + b + c)/2 = (120 + 170 + 250)/2 = 270 m

Correct choice is D

<h3>42.</h3>

The area is easy to calculate using the Heron's formula, since we have all three side lengths known.

Correct choice is B

<h3>43.</h3>

<u>Perimeter is:</u>

  • P = a + b + c = 120 + 170 + 250 = 540 m

Correct choice is A

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You have 2 job offers with the following options. Option 1: You are paid $30
kozerog [31]

Answer:

It takes 6 hours for both to reach an equal paid.

Step-by-step explanation:

You have to form an expressions in terms of x where x determine the number of hours :

Option 1,

$(30 + 9x)

Option 2,

$(14x)

Next, you have to compare it since they want to find out how many hours they work until they reach the same amount :

30 + 9x = 14x

30 = 14x - 9x

30 = 5x

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x = 6

8 0
3 years ago
From a barrel of colored marbles, you randomly select 1 blue, 2 yellow, 7 red, 6 green, and 2 purple marbles. Find the experimen
dybincka [34]

Answer:

8/9

Step-by-step explanation:

1 blue, 2 yellow, 7 red, 6 green, and 2 purple marbles = 18 marbles

The number that are not yellow = total - yellow

P( not yellow) = number that are not yellow / total

                       = (18-2) / 18

                       = 16/18

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3 0
3 years ago
PLEASE HELP! Brainlest!!! Just fill in the chart
Cloud [144]

Answer:

Softball : Speed: 29.68 m/s --- Kinetic Energy: 82.36 Joules

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4 0
3 years ago
Read 2 more answers
(k^2-6k^4)-(3k^4+k^2+2)
jeka57 [31]

Step-by-step explanation:

Vamos simplificar passo a passo.

k2-6k4-(3k4+k2+2)

Distribua o sinal negativo:

=k2-6k4+-1(3k4+k2+2)

=k2+-6k4+-1(3k4)+-1k2+(-1)(2)

=k2+-6k4+-3k4+-k2+-2

Combine os termos semelhantes:

=k2+-6k4+-3k4+-k2+-2

=(-6k4+-3k4)+(k2+-k2)+(-2)

=-9k4+-2

Responda:

=-9k4-2

7 0
3 years ago
Please please please help me with this answer
Sergio039 [100]

Hello,

85 / 12 ≈ 8

Bye ;)

3 0
3 years ago
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