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natali 33 [55]
3 years ago
9

Which expresión Is true and could you explain it

Mathematics
1 answer:
Verdich [7]3 years ago
8 0
First equation 
L.H.S = 4x -0.25y 
so it doesn't equal the R.H.S 

2nd equation 
R.H.S = 15q + 3qr 
so it doesn't equal the L.H.S 

3rd equation 
R.H.S = -30m -60n 
so R.H.S doesn't equal L.H.S 

4th equation 
L.H.S = -16a +4 
so L.H.S equal R.H.S 

The answer is D
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Suppose two 1-6 number cubes are rolled. find the probability of each outcome. <br><br> P(1 or 5)
stich3 [128]

Answer:

<u>The probability of each outcome rolling two numbered cubes is 1/36 or 2.8% (Rounding to the next tenth)</u>

Step-by-step explanation:

Probability of each outcome with one cube = Number of favorable events for each outcome/Total number of possible events

Replacing with the real values, we have:

Probability of each outcome with one cube = 1/6

Probability of each outcome with two cubes = 1/6 * 1/6 = 1/36

<u>The probability of each outcome rolling two numbered cubes is 1/36 or 2.8% (Rounding to the next tenth)</u>

3 0
4 years ago
The map of a walking trail is drawn on a coordinate grid with three points of interest. The trail starts at R(−3, 2) and goes to
emmainna [20.7K]

Answer

Find out the the total length of the walking trail .

To prove

Formula

Distance\ formula = \sqrt{(x_{2} - x_{1})^{2} +( y_{2} - y_{1})^{2}}

As given

The trail starts at R(−3, 2) and goes to S(2, 2) and continues to T(2, −5).

RS = \sqrt{(2-(-3))^{2} +( 2 - 2)^{2}}

RS = \sqrt{( 2 - (-3))^{2}}

RS = \sqrt{5^{2}}

RS = \sqrt{25}

\sqrt{25} = 5

RS = 5 units

As given

S(2, 2) and continues to T(2, −5).

Now

ST = \sqrt{(2-2)^{2} +( -5-2 )^{2}}

ST = \sqrt{( - 7)^{2}}

ST = \sqrt{49}

\sqrt{49} = 7

ST = 7 units

Therefore

Total length of the trail = RS + ST

                                      =  5 units + 7 units

                                      = 12 units

Therefore the total length of the trail is 12 units.


5 0
3 years ago
Read 2 more answers
Three baseball players are playing catch. Vondra is directly south of Mei and directly west of
Margaret [11]

distance of Vondra & Mei is 6 meters.

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

Here we have  , Three baseball players are playing catch. Vondra is directly south of Mei and directly west of  Yoshi. Vondra and Yoshi are 8 meters apart and Yoshi and Mei are 10 meters apart. Let's analyze step by step:

Vondra is directly south of Mei : Vondra & Mei , are south to each other.

Vondra is directly west of  Yoshi: Vondra & Yoshi , are west to each other.

Distance of Vondra & Mei = x = Perpendicular

Distance of Yoshi and Mei = 10 m = Hypotenuse

Distance of Vondra and Yoshi  = 8 m = base

In order , to find distance of Vondra & Mei we use Pythagoras Theorem:

10^{2} = x^{2} + 8^{2} \\10^{2} - 8^{2} = x^{2}\\100  - 64 = x^{2}\\x^{2} = 36\\x = 6m  , ∴ distance of Vondra & Mei is 6 meters.

5 0
3 years ago
HELP format is y=mx+b!!!!
Gekata [30.6K]

Answer:

y = - 3x - 3

Step-by-step explanation:

the equation of a linear function in slope- intercept form is

y = mx + b ( m is the slope and b the y- intercept )

To calculate m use the slope formula

m = (y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 2, 3) and (x₂, y₂ ) = (6, -21) ← 2 points from the table

m = \frac{-21-3}{6+2} = \frac{-24}{8} = - 3

y = - 3x + b ← is the partial equation

To find b substitute any other point from the table into the partial equation

using (2, - 9), then

- 9 = - 6 + b ⇒ b = - 9 + 6 = - 3

y = - 3x - 3 ← linear relationship


6 0
4 years ago
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Need the Aswer for 622g+8kg im in 3rd grade
Leya [2.2K]
A kilogram is equal to 1,000 grams, if you multiply it by 8, you get 8,000 grams, then you add 622 grams. You're finally left with 8,622 grams.
4 0
4 years ago
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