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Anit [1.1K]
3 years ago
9

Usually I get this but I checked my work and Im wrong I need help fast

Mathematics
1 answer:
amm18123 years ago
6 0
Sorry I don't know the answer
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Please Answer Attachment Below Thanks
docker41 [41]

Answer:

Step-by-step explanation:

The interior angles of a heptagon add up to 5*180 = 900

So

x + 143 + 116 + 135 + 135 + 116 + 155 = 900     Add up the known angles

x + 800 = 900                                                   Subtract 800 from both sides

x + 800 - 800 = 900 - 800                              Combine

x = 100

8 0
3 years ago
Choose the solution to this inequality. <br><br> 4/3 &lt; − 8/3y
Yuliya22 [10]

Answer:

Rewrite so y is on the left side of the inequality.

−83y>43

Multiply each term by −38 and simplify.

Inequality Form:

y<−1/2

Interval Notation:

(−∞,−1/2)

Step-by-step explanation:

6 0
3 years ago
A car has mass 1500 kg and is traveling at a speed of 35 miles/hour. what is its kinetic energy in joules? (Be sure to convert m
photoshop1234 [79]

Answer:

Factor by which kinetic energy increase = 4 times

Step-by-step explanation:

Given,

  • Mass of the car, v1 = 1500 kg
  • initial speed of car = 35 miles/h

                               =\dfrac{35\times 1609.34}{3600}\ m/s

                               = 15.64 m/s

Initial kinetic energy of the car is given by,

k_1\ =\ \dfrac{1}{2}.m.v_1^2

       =\ \dfrac{1}{2}\times 1500\times (15.64)^2\ joule

       = 183606.46 J

  • Final velocity of car v2 = 70 miles/hour

                                      =\dfrac{70\times 1609.34}{3600}

                                      = 31.29 m/s

So, final kinetic energy of car is given by

k_2\ =\ \dfrac{1}{2}.m.v_2^2

        =\ \dfrac{1}{2}\times 1500\times (31.29)^2

        = 734425.84 J

Now, the ratio of final to initial kinetic energy can be given by,

\dfrac{k_2}{k_1}=\ \dfrac{734425.84}{183606.46}

=>\ k_2\ =\ 4k_1                      

Hence, the kinetic energy will increase by 4 times.

7 0
3 years ago
movie tickets cost $9.95 for adults and $6.75 for kids they buy 2 adult tickets and 4 students and $28 popcorn
Harrizon [31]

Answer:

the total is $153.9

Step-by-step explanation:

The total for the adults is $19.9

The children $27

Popcorn $224

$9.95×2=$19.9

$6.75×4=$27

$28×6=$168

6 0
3 years ago
HELP ME I NEED HELP NOW I WILL GIVE CREDIT TO PEOPLE WHO ANSWER
kap26 [50]

Answer:

c

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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