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Irina18 [472]
3 years ago
7

What numbers have a sum of 20 and the difference is 4

Mathematics
2 answers:
kvv77 [185]3 years ago
8 0

Answer:

<u>The</u><u> </u><u>numbers</u><u> </u><u>are</u><u> </u><u>1</u><u>2</u><u> </u><u>and</u><u> </u><u>8</u>

Step-by-step explanation:

let the numbers be x and y :

x + y = 20 -  -  - (a) \\ x - y = 4 -  -  - (b)

add (a) and (b):

2x + 0y = 24 \\ 2x = 24 \\ x = 12

find y:

x + y = 20 \\ 12 + y = 20 \\ y = 20 - 12 \\ y = 8

balu736 [363]3 years ago
6 0

Answer:

16 and 2

Step-by-step explanation:

I'm not sure honestly if this is correct, but I hope this helps.

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pav-90 [236]

Answer:

use the trash can icon

Step-by-step explanation:I’m pretty sure it’s somewhere you can also get it baNed.

7 0
3 years ago
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Sergeu [11.5K]

Answer:

y=9x^2 + 8

Step-by-step explanation:

using the power rule, we will differentiate each term separately

d/dx of 3x^3 = (3)(3)x^(3-1) = 9x^2

d/dx of 8x = 8x^(1-1) = 8

d/dx of -7 = 0

combining them we get the derivative which is y = 9x^2 + 8

6 0
3 years ago
Read 2 more answers
URGENT!!
Serjik [45]

Answer:

13, 31

Step-by-step explanation:

Set the width as x.

Length: 2x + 5

Perimeter:

(x) + (2x + 5) + (x) + (2x + 5) = 88

Simplify.

6x + 10 = 88

Solve.

6x = 78

x = 13

Substitute this into the previous equations

Width: 13

Length: 31

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3 years ago
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The preimeter of a rectangle is 53 meters the length is 2.3 meters longer than the width
ehidna [41]
------------------------------------
Given information
------------------------------------
Perimeter = 53m
Length is 2.3m longer than the width

------------------------------------
Formula
------------------------------------
Perimeter = 2( length + width)

------------------------------------
Define the length and Width
------------------------------------
Let the width be x
width = x
length = x + 2.3

------------------------------------
Form equation and solve x
------------------------------------
 2( x + x + 2.3) = 53
2(2x + 2.3) = 53
4x + 4.6 = 53
4x = 53 - 4.6
4x = 48.4
x = 48.4 ÷ 4
x = 12.1

------------------------------------
Find Length and Width
------------------------------------
Width = x = 12.1m
Length = x + 2.3 = 12.1 + 2.3 = 14.4m

-------------------------------------------------------------
Answer: Length = 14.4m and Width = 12.1m
--------------------------------------------------------------

5 0
3 years ago
Two minor league baseball players got a total of 292 292 hits. washington had 18 18 more hits than sanchez. find the number of h
koban [17]
Let number of hits by Sanchez be x.

Number of hits by Washington = 18 + x

Total number of hits = 292

x + 18 + x = 292

2x + 18 = 292

2x = 274

x = 137

Hence, Sanchez has 137 hits and Washington has 155 hits.
7 0
3 years ago
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