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arsen [322]
2 years ago
6

Please help me? I am confused.​

Mathematics
1 answer:
SIZIF [17.4K]2 years ago
7 0
ANSWER: A. x=4


Explanation: 7-2x=2x(x-4)-1

7-2x=2x-9

-2x-2x=-9-7

-4x=-16

which will get you your answer x=4
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30. The perimeter of a rectangle is 292 feet. The length of the rectangle is 4 feet less than 5 times the width. What is the len
trasher [3.6K]
Formula for perimeter ;
P = length + length + width + width 
P = 2l + 2w

l = -4 + 5w
l = 5w - 4

substitute into equation of perimeter 

292 = 2(5w - 4) + 2w

292 = 10w - 8 + 2w

292 + 8 = 10w + 2w 

300 = 12w

25 = w

substitute into eqution to find the length;

l = 5(25) - 4
l = 125 - 4
l = 121

therefore, the width is 25 and the length is 121

hope that helps, God bless!
8 0
3 years ago
How many mile did they travel in all ?
Arlecino [84]

Answer:

25 miles

Step-by-step explanation:

At 1 p.m. the maximum travel distance is reached.  This is 25 miles.

8 0
2 years ago
On the first visit to the veterinarian's office, Cora's kitten weighted 550 grams.
tamaranim1 [39]

old (first visit): 550 grams

second visit: gained 350 grams

third visit: gained 300 grams

new: cora's kitten is now 1200 grams.

-> now, we must find the percent increase between 550 and 1200.

to find percent increase, we use this equation

new - old / old x 100

-> (1200 - 550 / 550) x 100

   (650 / 550) x 100

   = 1.18 x 100

 <u>percent increase: 118% </u>

<u></u>

✧ hope this helped!

- aure

8 0
2 years ago
The first three towers in a sequence are shown. The nth tower is formed by stacking n blocks on top of an n times n square of bl
erik [133]

Answer:

The 99th tower contains 9900 blocks.

Step-by-step explanation:

From the question given, we were told that the nth tower is formed by stacking n blocks on top of an n times n square of blocks. This implies that the number of blocks in n tower will be:

n + n²

Now let us use the diagram to validate the idea.

Tower 1:

n = 1

Number of blocks = 1 + 1² = 2

Tower 2:

Number of blocks = 2 + 2² = 6

Tower 3:

Number of blocks = 3 + 3² = 12

Using same idea, we can obtain the number of blocks in the 99th tower as follow:

Tower 99:

n = 99

Number of blocks = 99 + 99² = 9900

Therefore, the 99th tower contains 9900 blocks.

7 0
3 years ago
Which equation can be used to show the relationship between the circumference C and a diameter D of a circle
Firlakuza [10]
The diameter is the distance from one side of a circle to the other, if you cross through the center. The circumference is the distance around the circle. The circumference is equal to two time pi time the radius (C=2*pi*r)
3 0
2 years ago
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