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Mice21 [21]
2 years ago
8

Review

Mathematics
1 answer:
galben [10]2 years ago
3 0

Answer:

The mean increased

Step-by-step explanation:

The mean is the average, add all numbers and divide by total amount.

Old mean: 6

New mean:8

You might be interested in
If 2 sodas and 3 hot dogs are $17 while 5 sodas and 6 hot dogs are $38.75 - how much are each separately?
Bond [772]

The cost of soda is $4.75 and the cost of hot dog is $2.5

<u>Step-by-step explanation</u>:

<u>Let us assume :</u>

  • The cost of soda be 'x'.
  • The cost of hot dog be 'y'.

<u>Given that,</u>

The cost of 2 sodas and 3 hot dogs are $17.

⇒ 2x + 3y = 17  ------(1)

The cost of 5 sodas and 6 hot dogs are $38.75

⇒ 5x + 6y = 38.75  -------(2)

<u>Solving the equations to find x and y values :</u>

Multiply eq(1) by 2 and subtract eq(2) from eq(1),

 4x + 6y = 34

-(<u>5x + 6y = 38.75</u>)

 <u>-x         = -4.75 </u>

The value of x = 4.75

The cost of soda is $4.75

Substitute x=4.75 in eq(1),

2(4.75) + 3y = 17

3y = 17 - 9.5

3y = 7.5

y = 7.5/3

y = 2.5

The cost of hot dog is $2.5

7 0
2 years ago
If ∠G ≅ ∠H, then ∠H ≅ ∠G. name the property
USPshnik [31]

Answer:

Property of Symmetry

Step-by-step explanation:

The symmetric property of equality tells us that both sides of an equal sign are equal no matter which side of the equal sign they are on. Remember it states that if x = y, then y = x.

7 0
2 years ago
the interior angle of a regular hexagon is 120° work out the sum of the six reflex angles at the vertices of a regular hexagon
olga2289 [7]

Answer:

I'm not 100% sure but isn't a reflex angle the difference between the angle and 360°?

Then 360° - 120° = 240°

240° x 6 = 1440°

Step-by-step explanation:

8 0
3 years ago
On which attempts was his time less than 60 seconds?
adelina 88 [10]

Answer:

4 6 and 7?

Step-by-step explanation:

all you have to do is find 60 sec mark and all attempts bellow it are below 60 sec or under 60 sec

5 0
2 years ago
PLEASE HELP = simplify 3/4(-10+2/5)
solniwko [45]
There are many ways to do this depending on the property you have to use:

If you use the distributive property, you need to distribute 3/4 to -10 and 2/5. Distribute means you will multiply it so your resulting equation will be this:

\frac{-30}{4}  -  \frac{6}{20}

Before you can add, you need to first make them like terms because you cannot add unlike fractions. Get the LCD and form your new equation:

\frac{-150+6}{20}

Now you can just add them together to get:
\frac{-144}{20}

and then simplify your fraction:
\frac{-36}{5} or - \frac{36}{5} 

The whole fraction becomes negative because when you divide integers and of them is negative, the final answer will be negative.
3 0
2 years ago
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