3 years ago

Please Please Help Me

Mathematics

2 answers:

Anuta_ua [19.1K]3 years ago

5 0

$- 3 \sqrt{3}$

Stella [2.4K]3 years ago

3 0

Answer:

-3√3

Step-by-step explanation:

try that

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The weight of a boy was 15kg last year. If his weight increases by 3kg this year, find the percentage increase in his weight.

WARRIOR [948]

This year = 18kg
18 x .3= 5.4
The percentage change would be 5.4%. If it needs to be rounded by the nearest tenth, then it would be 5%.
I’m pretty confident this is the answer but I’m not 100% sure. I hope this helps!

4 0

2 years ago

At the beginning of my bike ride I feel good, so I can travel 20 miles per hour. Later, I get tired and travel only 12 miles per

Vesnalui [34]

Answer: $3\dfrac{1}{4}$ hours

Step-by-step explanation:

Let x be the time ( in hours ) you feel good and y be the time ( in hours ) that you get tired.

As per given , we have

x+y= 8

Since : $Distance = Speed\times Time$

So , we have

20x+12y=122

According to the given question , we have the following system of equations ,

$x+y= 8--------(1)\\\\20x+12y=122------------------(2)$

Multiply 12 on both sides of equation (1) , we get

$12x+12y=96------------(3)$

Eliminate equation (3) from (2) , we get

$8x=26\\\\\Rightarrow\ x=\dfrac{13}{4}=3\dfrac{1}{4}$

Hence, you felt $3\dfrac{1}{4}$ hours good.

3 0

3 years ago

1/4 divided By 2 Show Your Work On How You Got The Answer

EastWind [94]

1/4 / 2 = 1/4*2 = 1/8

8 0

3 years ago

Out of the three answers, which one is correct?<br> I would also appreciate an explanation

cricket20 [7]

Answer:

Step-by-step explanation:

All angles in a triangle = 180°

35 + x + (x+7) = 180

42 + 2x = 180

2x = 138

x = 69

Hope this helps!

7 0

2 years ago

Vern bought 6 candles for $ 8.50 each he bought a holder for the candles for 12.75 what is the total amount Vern spent on the ca

Alexus [3.1K]

8.50x6=51
51+12.75=63.75

So he spent $63.75

3 0

3 years ago