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aleksandr82 [10.1K]
4 years ago
13

The first of two number is 7 more than the second. Their sum is 29. Find the numbers

Mathematics
2 answers:
JulsSmile [24]4 years ago
8 0

Answer:

7.5 and 21.5

Step-by-step explanation:

29/2=14.5

14.5-7=7.5

14.5+7=21.5

Hope this helps!

GalinKa [24]4 years ago
6 0

Answer:

11 and 18

Step-by-step explanation:

first number is x second is y.

x+y=29

x=y+2

y+2+y=29

2y+2=29

2y=22

y=11; x= 18

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if you decrease by a given percent and then increase by the same percent, will you be back where you started? how do you know
quester [9]

Lets pick a random number, like 50. Lets decrease and increase it by 50%. After the decrease, you will get 25, but when you increase it by 50%, it's only 37.5. No, because when you decrease it, you have a smaller base, so it increases less than it decreases. 50% of 100 is 50, but 50% of 50 is 25. You can see there is a significant difference.

5 0
3 years ago
Natalee wanted to demonstrate the volume of a square pyramid. To do this, she took a hollowed out pyramid that has a base of 25
swat32

Answer:

The answer is below

Step-by-step explanation:

Natalee transferred water from a square pyramid to a cube. To calculate how many times she will need to dump the water from the pyramid into the cube to completely fill the cube, we divide the volume of the cube by the volume of the square pyramid. Hence:

Number of times = volume of cube / volume of pyramid

The perimeter of the pyramid base = 25 in, hence the length of one side of the bae = 25 / 4 = 6.25 in

Volume of square pyramid  = base² × (height / 3) = (6.25 in)² * (5 in / 3) = 65.1 in³

Volume of cube = 125 in³

Number of times = 125 in³ / 65.1 in³ = 1.92

3 0
3 years ago
What could x be substituted for x 6x + -4 = 2x + 8
Rzqust [24]
6x-4=2x+8
mnus 2x both sides
4x-4=8
add 4 to both sides
4x=12
divide 4 both sides
x=3
6 0
4 years ago
PLEASE HELP! Brainliest answer for first correct answer...
trasher [3.6K]
        check picture below

8 0
4 years ago
If 3.N=1,then N is the
rosijanka [135]
3 * N = 1

The multiplicative inverse is just the reciprocal of the number. The reciprocal is just " flipping " the number. So the reciprocal of 3 (or 3/1) is 1/3. And any time u multiply a number by its multiplicative inverse (reciprocal), the result is 1

3 * 1/3 = 3/3 = 1.....so N is ur multiplicative inverse
6 0
3 years ago
Read 2 more answers
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