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mars1129 [50]
2 years ago
13

Ranger wants to verify that the expression 8x – 20 is the correct simplified expression for 4(2x – 5). Explain how to verify the

simplified expression.
Mathematics
2 answers:
Aleks [24]2 years ago
3 0

Answer:


Step-by-step explanation:

To verify, a number needs to be substituted for x in both expressions. Use order of operations to simplify and find the value. The value needs to be the same for both expressions to prove

Rufina [12.5K]2 years ago
3 0

Answer:

<em>Sample Answer:</em> To verify, a number needs to be substituted for x in both expressions. Use order of operations to simplify and find the value. The value needs to be the same for both expressions to prove equivalence.

Step-by-step explanation:

Using the Distributive Property  Assignment

Verifying a Simplified Expression

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Help! Find the coordinates of P so that P partitions the segment AB in the ratio 6:2 if A(−4,12) and B(9,−4).
LekaFEV [45]

(5.75,0)

Let A be (x1,y1) , B be (x2,y2) , P be (x,y) and the ratio be m:n

Formula is,

x=(x2*m+x1*n)/(m+n)

y=(y2*m+y1*n)/(m+n)

7 0
2 years ago
Lauren spent 3/5 of her money on a refrigerator. The refrigerator cost $756. How much money did she have left?
Lelechka [254]
Fractions are the part/whole.  We can set this up to be...

3/5 = 756
756 x5/3 = 1260.

if she had 1260 to begin with and spent 756, she would have 504.00 left.
3 0
2 years ago
A survey was administered to high school seniors in Anytown. According to the survey results, fewer than 0.5% of the students dr
Feliz [49]

Answer: high test-retest reliability

Step-by-step explanation: this is because the result of the survey was thesame with the previous result, despite the space of time between when the first survey was conducted and when the second survey was conducted. There was know observable difference in result and if conducted in the next 3 months again, it will give same result, this strongly indicate that the survey has high test-retest reliability.

8 0
1 year ago
If 36a=45/b, then ab=
Ronch [10]

Answer:

1.25

Step-by-step explanation:

let \: a = x \: and \: b = y

36x =  \frac{45}{y}

36xy = 45

xy =  \frac{45}{36}

xy = 1.25

therefore \: ab \: is \: 1.25

4 0
2 years ago
1) The cost of constructing a path 5 m broad inside the boundary of a square lawn at Rs 36.25 per sq. metre is Rs 90625. What is
Svetach [21]

Let , side lawn is a.

Area of boundary is :

A=4\times5\times a\\\\A=20a\ m^2

Now, total cost is given by :

T=20a\times 36.25\\\\90625=725a\\\\a=125\ m

Area left is :

A'=a^2-20a\\\\A'=125^2-20\times 125\ m^2\\\\A'=13125\ m^2

Price to empty space with turfs is :

P=A'\times 20\\\\P=13125\times 20\\\\P=262500

Therefore, the cost of covering the empty space with turfs at the rate of Rs 20 per sq. metre is Rs 262500.

Hence, this is the required solution.

3 0
2 years ago
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