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2 years ago

Helppp i literally dont understand this at all

Mathematics

1 answer:

Ksju [112]2 years ago

3 0

Answer:

D. Substitution

Step-by-step explanation:

I don't know how to explain it other than that they substituted the 50° angle into the original equation.

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Ben also participated. He fell down midway, and had to walk part of the distance. Still, he finished the distance! It took him e

sammy [17]

Answer:

0.56 m/s

Step-by-step explanation:

The average speed of a body tells how fast is the body moving; it is calculated as:

$v=\frac{d}{t}$

where

d is the distance covered

t is the time elapsed

In this problem, we don't know the distance covered by Ben. Therefore, we will assume that it is 1 km:

d = 1 km = 1000 m

The time elapsed to cover this distance is:

$t=30 min \cdot 60 =1800 s$

Therefore, Ben's average speed is:

$v=\frac{1000}{1800}=0.56 m/s$

3 0

3 years ago

For a math assignment l, Leslie researched the scores of the people competing on her favorite quiz show. How many people were on

klio [65]

Answer:

Step-by-step explanation:

8 0

3 years ago

Select from the drop-down menus to correctly complete the proof.

tekilochka [14]

rational irrational irrational

7 0

3 years ago

Read 2 more answers

What’s the answer for 3(x+4)=-18

bija089 [108]

Answer: 10 or -10

Step-by-step explanation: 3x + 12 = -18

-12 both sides then you get 3x = -30 divide by 3 which equals x = 10 or -10

6 0

3 years ago

Read 2 more answers

Please help me ASAP!Please this is due soon and i don't have all day.

Helga [31]

Answer:

Section 1: 5.59%

Section 2: -2.16%

Section 3: -10.82%

Section 4: -6.54%

Section 5: -2.16%

Section 6: 7.86%

Explanation:

The formula to calculate the percent change in mass is given as:

$PercentChange = \frac{ChangeInMass}{StartingMass}*100=\frac{NewMass - OldMass}{OldMass}*100$

1- Section 1:

Old mass = 7.83 g and New mass = 8.268 g

$PercentChange = \frac{8.268-7.83}{7.83}*100 =$ 5.59%

2- Section 2:

Old mass = 7.4 g and New mass = 7.24 g

$PercentChange = \frac{7.24-7.4}{7.4}*100 =$ -2.16%

3- Section 3:

Old mass = 7.3 g and New mass = 6.51 g

$PercentChange = \frac{6.51-7.3}{7.3}*100 =$ -10.82%

4- Section 4:

Old mass = 7.49 g and New mass = 7.0 g

$PercentChange = \frac{7.0-7.49}{7.49}*100 =$ -6.54%

5- Section 5:

Old mass = 7.4 g and New mass = 7.24 g

$PercentChange = \frac{7.24-7.4}{7.7.4}*100 =$ -2.16%

6- Section 6:

Old mass = 7.89 g and New mass = 8.51 g

$PercentChange = \frac{8.51-7.89}{7.89}*100 =$ 7.86%

Hope this helps :)

6 0

3 years ago