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3 years ago

14

Name the property shown by each statement : 3+(x+4) = (x+4)+3

2 answers:

Andrews [41]3 years ago

7 0

Answer:

Commutative

Step-by-step explanation:

You can switch the order.

N76 [4]3 years ago

7 0

Answer: it is the commutive propat

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Help please =]<br><br> Solve system of equations using any method 2x-6y=8 and 2x-6y=3

dusya [7]

Let z be any number (like x would be)

if we set z equal to 2x-6y, then we get z = 2x-6y

The system

2x-6y = 8
2x-6 = 3

turns into this new system

z = 8
z = 3

but z is a single number. It can't be both 8 and 3 at the same time. So there are no solutions

6 0

3 years ago

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Calculate the angle subtended by an arc whose length is 89.5cm and radius 12cm

Mariulka [41]

Answer:

Step-by-step explanation:

angle at the center

$\theta=\frac{l}{r}\\where~l=length~of~arc\\r=radius\\\theta=\frac{89.5}{12}~radians$

3 0

3 years ago

57% of 84 (Explained)

Anna [14]

Answer:

47.88

Step-by-step explanation:

57% converts to 0.57. so multiply 0.57 x 84

4 0

3 years ago

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9 − 5 = 1 /4 (16x + 60)<br> show your work solve for x

leva [86]

Distribute 1/4 to all terms within the parenthesis

9 - 5 = 4

1/4(16x + 60) = (16x + 60)/4 = 4x + 15

4 = 4x + 15

Isolate the x. Note the equal sign. What you do to one side, you do to the other.

Subtract 15 from both sides

4 = 4x + 15

4 (-15) = 4x + 15 (-15)

4 - 15 = 4x

-11 = 4x

Isolate the x. Divide 4 from both sides

(-11)/4 = (4x)/4

x = -11/4

hope this helps

6 0

3 years ago

The 1992 world speed record for a bicycle (human-powered vehicle) was set by Chris Huber. His time through the measured 200 m st

aleksklad [387]

Answer:

Speed of Chris Huber = 30.726 m/s

Time taken by Sam = 5.55 s

Step-by-step explanation:

Given:

Distance = 200 m

Time taken by Chris Huber = 6.509 s

Now,

Speed of Chris Huber = $\frac{\textup{Distance}}{\textup{Time}}$

or

Speed of Chris Huber = $\frac{\textup{200 m}}{\textup{6.509 s}}$

or

Speed of Chris Huber = 30.726 m/s

Speed of Sam = Speed of Chris Huber + 19.0 km/h

Now,

1 km/hr = 0.277778 m/s

thus,

19.0 km/h = 19.0 × 0.27 = 5.278 m/s

thus,

Speed of Sam = 30.726 + 5.278 = 36.004 m/s

therefore,

Time taken by Sam = $\frac{\textup{Distance}}{\textup{Speed}}$

or

Time taken by Sam = $\frac{\textup{200}}{\textup{36.004}}$ = 5.55 s

6 0

3 years ago