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denpristay [2]
3 years ago
6

1. 2x + 7 = 2x - 7 2. 3x + 8 = -2x + 8 3. 4(x + 1) = 4x + 4

Mathematics
1 answer:
max2010maxim [7]3 years ago
7 0

Answer:

1. 0 = -14

2. x = 0

3. 0 = 0

Step-by-step explanation:

I hope this helps have a great day

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An average adult giraffe is 18 feet tall. A newborn giraffe is about 6 feet tall/ Kayla is building a model of a mother giraffe
Hitman42 [59]

Answer:

Mother = 17 inches and then Newborn = 5 (2/3) or 5.66666666667 inches

Step-by-step explanation:

I was sort of guessing based on your question what you were looking for. How I solved this is we know that since the average adult giraffe is 18 feet tall and the average newborn giraffe is 6 feet tall, then the adult giraffe is about 3 times as tall as the average newborn giraffe so the ratio is 3:1 adult: newborn. So with the mother at 17 inches, then since the newborn giraffe is, on average, 3 times smaller than the mother, it is therefore 17/3 = 5.666667 or 5 and 2/3s.

3 0
3 years ago
Please help 11x + 7 -
Arte-miy333 [17]
Complete the equation?
3 0
3 years ago
Two cyclists, 80 miles apart, start riding towards each other at the same time. One cycles three times as fast as the other. If
miv72 [106K]

Answer:

The speed of the faster cyclist is 15 miles per hour

Step-by-step explanation:

Let the speed of the slower cyclist be x miles per hour

The speed of the faster is 3 times this

Mathematically, we have this as 3 * x miles per hour = 3x miles per hour

Now;

distance = speed * time

In 4 hours, the distance covered by the slower will be;

x * 4 = 4x miles

The faster;

3x * 4 = 12x miles

Since they are riding opposite each other, they would have covered a total distance of 80 miles when they meet

Thus, we have that;

12x + 4x = 80

16x = 80

x = 80/16

x = 5

The speed of the faster is;

3x miles per hour

Substitute the value of x here

That will be;

3 * 5 = 15 miles per hour

8 0
3 years ago
Michele wanted to measure the height of her school’s flagpole. She placed a mirror on the ground 48 feet from the flagpole, then
9966 [12]

The <u>correct answer</u> is:


20 feet.


Explanation:


48 ft would be the measurement of the base of the right triangle formed by the flagpole and the ground. We are trying to find the height of the flagpole, which is the other leg of this right triangle.


The measurements we have for the second triangle are 5 and 12. Since she is 12 feet away from the mirror, the base of the triangle is 12. Her eye level is at 5 feet, so this is the height of the triangle.


Since we know these triangles are similar, we can use proportions to solve this. 48 is to 12 (base is to base) as the unknown height is to 5 (height is to height):


48/12 = x/5


Cross multiply:

48*5 = 12*x

240 = 12x


Divide both sides by 12:

240/12 = 12x/12

20 = x


The unknown height is 20 feet.

3 0
3 years ago
Read 2 more answers
If 1/2 x 10 = 8 - x, then x = ?
ASHA 777 [7]

Answer:

3

Step-by-step explanation:

1/2 x 10 is 5

8 - 3 is 5

1/2 x 10 = 8 - 3

4 0
3 years ago
Read 2 more answers
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