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Verizon [17]
3 years ago
14

The length of a rectangle is twice its width and the area is equal to the area

Mathematics
2 answers:
Keith_Richards [23]3 years ago
6 0

Answer:

can one of yall help on mine

Step-by-step explanation:

Troyanec [42]3 years ago
6 0

The perimeter of the rectangle is 48 cm.

Step-by-step explanation:

Let the width of the rectangle = x

The length of the rectangle = 2x

so area =L X B = x X 2x =  2x^{2}

The each side of the square is 12 cm

so area = 12 X 12 sq cm = 144 sq cm

According to the problem,

2x^{2} = 144

or, x^{2} = 144/2 = 72

or, x = \sqrt{72}

= 8.4 = 8 (approx)

so length = 16 cm and width = 8 cm

Perimeter = 2 X ( L + B) = 2 X (16+8) = 48 cm

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Half an hour after leaving her house Beverly was 20 miles from home. At this point she merged onto the highway and was traveling
N76 [4]

Answer:

1. 45.71 miles

2. 10 miles

3. 89.43 miles

4. 0.79 hr

5. 0.025 hr

Step-by-step explanation:

speed = distance/time

After 4 hrs Beverly was 200 miles from home , however she had spent 0.5hr travelling for 20 miles prior to getting to the highway.

Therefore;

Constant speed before Highway = 20/0.5 = 40 miles/hr

Constant speed at Highway = \frac{(200-20)}{(4-0.5)} = 51.43 miles/hr

1. in 1 hr beverly will have travelled;

⇒ (20 miles in 0.5 hr ) + (0.5 hr  at speed 51.43 miles/hr)

⇒ 20 + (0.5 x 51.43) = 45.71 miles

2. In 0.25 hr beverly had not reached the highway

⇒ distance = speed x time

⇒ distance = 40 x 0.25 = 10 miles

3. in 1.85 hrs beverly will have travvelld;

⇒ (20 miles in 0.5 hr ) + (1.35 hr at speed 51.43 miles/hr)

⇒ 20 + 69.43 = 89.43 miles

4. Time taken to get to 35 miles

⇒ (20 miles in 0.5 hr ) + (15 miles  at speed 51.43 miles/hr)

⇒ 0.5hr + (15/51.43) hr = 0.79 hr

5. Time taken to travel 1 mile

 ⇒ time = distance / speed = 1 mile  / 40 miles/hr

⇒ time = 0.025 hr

8 0
3 years ago
How do you solve this equation ?
Lyrx [107]
Is z an angle? if so, i'll use the ration [email protected]=perpendicular/base
tanZ=15/20=3/4 answer
5 0
3 years ago
6b-9=-87 what is the answer
maw [93]

Answer:

Answer is below

Step-by-step explanation:

Add 9 to both sides.

6b-9+9=-87+9\\6b=-78

Divide both sides by 6

\frac{6b}{6} =\frac{-78}{6} \\b=-13

3 0
3 years ago
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arsen [322]

Answer:

B

Step-by-step explanation:

Unit rate means one quantity in terms of another unit quantity. In the answer choices, we see that the denominator is always in terms of UNIT LITERS (1 L), so that means, we have to find gallons in terms of UNIT LITERS.

It means, we have to divide gallons by liters to get in terms of unitary liters.

Let's check the first line:

19.5/75 = 0.26 Gallons / 1 Liter

Now, checking 2nd:

39/150 = 0.26 Gallons / 1 Liter

So, yes, they are the same and other 2 lines would be the same as well. The unit rate is:

0.26 gal/1L

That's answer choice B

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Answer:

Step-by-step explanation:

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