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GREYUIT [131]
3 years ago
9

Test your knowledge of lines with the following:

Mathematics
1 answer:
Karolina [17]3 years ago
4 0
Wow. That’s great. Nice
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The width of a rectangle is 7x - 6 feet and the length is 3x + 7 feet. Find the perimeter of the rectangle.
aliina [53]

Answer:

P= 20x+2 ft

Step-by-step explanation:

________

I                I

I                I       3x + 7ft

________

7x - 6ft

P= (7x - 6 + 7x - 6) + (3x + 7 + 3x + 7)

 = (14x - 12) + (6x + 14)

 = 20x + 2 ft

8 0
3 years ago
Need help with question 3, 8, 13, 15, 17, 18
antoniya [11.8K]

Answer:

18. 8x+40

8. 2hours 30 minutes

Step-by-step explanation:

8. 8x2= 16

8 divided by 2 is 4

4+16= 20

4mph = 30 minutes

8mph = 1 hour

8+8+4= 2 hours and 30 minutes

8 0
3 years ago
Un ascensor sube desde el primer piso al quinto piso, baja al segundo, sube al octavo. Si cada piso tiene 3 metros de altura, ¿c
german

Answer:

El ascensor recorrió unos 39 metros

Step-by-step explanation:

Segun la pregunta cada cada piso tiene 3 metros de altura, por lo tanto para calcular los metros que recorrió el ascensor tenemos que hacer el siguiente calculo:

metros desde el primer piso al quinto piso=3 metros*4=12 metros

metros desde el quinto piso al segundo piso=3 metros*3=9 metros

metros desde el segundo piso al octavo piso=3 metros*6=18 metros

Por lo tanto los metros que recorrió el ascensor=12 metros+9 metros+18 metros

metros que recorrió el ascensor=39 metros

El ascensor recorrió unos 39 metros

8 0
3 years ago
For the past 40 days. Naomi has been recording the number of customers at her restaurant between 10:00 AM and 11:00 AM. During t
igor_vitrenko [27]

Answer:

The experimental probability there will be fewer than 20 customers on the forty-first day is 5/8, .625, 62.5%.

Step-by-step explanation

:


4 0
3 years ago
Can you please help me with 23 and 25 I do not understand!!! Please help
adell [148]

when you multiply a number by a value that's greater than 1, that number increases, for example 2 and then we multiply it like 2 * 3, clearly 2*3 is greater than 2.

now when you multiply a number  by a value that's lesser than 1, that number decreases, for example 2 and then we multiply it by something like 1/4, so 2 * 1/4 = 1/2, well, clearly 1/2 is smaller than 2, so 1/2 is a decreased value of 2.

23)

we have here 4/7, and then a product, well, the product is 4/7 and 9/10, however 9/10 is less than 1, recall 1 = 10/10, 9/10 is just a tiny bit less than 1.

because we're multiplying 4/7 by some amount less than 1, the product is a smaller value than 4/7, thus

 \bf \cfrac{4}{7}~~>~\left( \cfrac{9}{10}\times \cfrac{4}{7} \right)

25)

we have here 5/6 and we multiply it by 7/7, wait a minute!!! 7/7 = 1, we're really just multiplying 5/6 by 1 then, what does that give us?  well, 5/6 * 1  = 5/6, just the number itself,

\bf \cfrac{5}{6}~~=~\left( \cfrac{5}{6}\times \cfrac{7}{7} \right)

7 0
3 years ago
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