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notka56 [123]
4 years ago
6

Why will the value of y for the function y equals 5x + 1 always be greater than that of y equals 4x + 1 when X is greater than 1

?
Mathematics
1 answer:
mezya [45]4 years ago
6 0

"Why?" in math has various meanings.

Let's solve

5x +1 > 4x + 1

That's easily solved,

5x - 4x > 1 - 1

x > 0

Since x>1 is included in x>0, it's in the solution set to the above inequality, so all such x make the inequality true.

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Can someone please answer both of these!
ryzh [129]

Answer:

x= 4   y=11

Step-by-step explanation:

7 0
3 years ago
I.The difference between two numbers is 5. Their product is 36.
faust18 [17]
Equ 1: X-Y=5
equ 2: x∗y=36
from Equ 1
     X=5+Y------equ 3
substitute x=5+y in equ 2
(5+y)∗y=36
5y+y^2=36
y^2+5y-36=0
factorize by substitution
(y^2+9y)-(4y-36)=0
y(y+9)-4(y+9)=0
(y-4)(y+9)=0
y=4 or y=-9....

substitute y=4 or -9 in equ 1
x-4=5
x=5+4
x=9 OR

x-(-9)=5
x+9=5
x=5-9
x=-4

since -4∗-9=36
therefore y=-9 and x=-4



3 0
3 years ago
What’s the area of a trapezoid?
S_A_V [24]

Answer:

For a trapezoid, A = (a+b/2)h

Step-by-step explanation:

I attached a picture which is better.

6 0
3 years ago
4. A store had 86 DVDs and 52 CDs. When the equal number of DVDs and CDs were sold,
11Alexandr11 [23.1K]

Answer:

51 DVDs

Step-by-step explanation:

Let the number of DVDs and CDs sold be x each.

<u>Initial</u>

Number of DVDs= 86

Number of CDs= 52

<u>After selling</u>

Number of DVDs= 86 -x

Number of CDs= 52 -x

Given that there are 3 times as many DVDs than CDs left,

86 -x= 3(52 -x)

<em>Expand:</em>

86 -x= 156 -3x

<em>Bring x terms to 1 side, constant to the other:</em>

3x -x= 156 -86

<em>Simplify:</em>

2x= 70

<em>Divide both sides by 2:</em>

x= 35

Amount of DVDs left

= 86 -x

= 86 -35

= 51

3 0
3 years ago
12 bars of soap for $8.69
Deffense [45]
Wow… how is this a question? .-.
8 0
3 years ago
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