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butalik [34]
3 years ago
6

Lenny thinks the following expressions are equivalent:

Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
4 0
No. the first simplifies to 10a -4 and the second is 10a-2
julia-pushkina [17]3 years ago
3 0

Yes, he is correct, using the distributive property you get the same answer

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Need help please need help
klasskru [66]

Answer:

b.y=4

c. x=6

These are the answers hope this helps

7 0
2 years ago
I have a square graph, but I would like to make the graph larger.
fenix001 [56]

FORMULA:

  • Area of ⬜ = (side)²

ANSWER:

We are given new side of square i.e, 2s + 3.

So, Area = (2s + 3)²

  • (2s)² + (3)² + 2 × 2s × 3
  • 4s² + 9 + 12s

Hence, The area of the new graph is a perfect square trinomial: __4__s² + __12__s +__9__.

4 0
3 years ago
A four-sided polygon has sides that measure 1 cm, 5cm, and 7 cm. (Forth side not given). What is the perimeter?
yaroslaw [1]

Answer:

(13+x)cm

Step-by-step explanation:

Given data

Length of sides

1cm, 5cm, 7cm

Since the shape is four-sided and the fourth side is not given, let the fourth side be x

so

The perimeter of the polygon is

P= 1+5+7+x

P= 13+x

Hence the perimeter of the polygon is

P= (13+x)cm

3 0
2 years ago
The selling price is $750. The rate of the sales tax is 5%. How much is the sales tax?
ElenaW [278]

Answer:

37.5

Step-by-step explanation:

Selling price= 750

Sales tax= 5%

5/100 because we are looking for 5% ot of 100%

750*0.05

5 0
2 years ago
At noon, Bradley began steadily increasing the
barxatty [35]

Answer:

25.5 mph

Step-by-step explanation:

So Bradley's speed can be modeled by the equation y=2x+40 where y=speed, x=time in hours after noon, and b=initial speed

So 12:15 is 15 minutes after noon, which is also 0.25 or 1/4 of an hour after noon. This is the x-value. Plug this into the equation to get his speed at 12:15

y=2(0.25)+40

y=0.5+40

y=40.5

So his speed was 40.5 at the time and since he was going 15 miles over the speed limit, the speed limit is 15 less than his speed

40.5 - 15 = 25.5

8 0
2 years ago
Read 2 more answers
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