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Natasha_Volkova [10]
3 years ago
12

I forgot where I start

Mathematics
2 answers:
Alla [95]3 years ago
8 0
Okay, if x-y=11, then y + 11 = x
Now, apply this to the next equation. Since we know y + 11 = x, we can use this instead of x
2(11+y)+y=19
22+2y+y=19
22+3y=19
now make 3y alone
3y=19-22
3y=(-3)
y=-1
Plug y to our first equation to get x
x = 11+-1
x=10
Hope this helps :)
 
Minchanka [31]3 years ago
4 0
Add these eqn and then you have to cancel out (y) after that add x and 2x which is equal to 3x and also add RHS i.e.30 and divide it by 3
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Which system of linear inequalities has the point (3, -2) in its solution set?
Licemer1 [7]

Answer:

None of the given system of linear inequalities

Step-by-step explanation:

Given

(x,y) =(3,-2)

Required

The line inequalities with the above solution

The first set of linear inequalities, we have:

y < -3

y \ge \frac{2}{3}x - 4

y < -3 implies that the values of y is -4,-5.....

While (x,y) =(3,-2) implies that y = -2

Hence, the first set is wrong

The second set of linear inequalities, we have:

y > - 2

y \ge \frac{2}{3}x - 4

y > - 2 implies that the values of y is -1,0.....

While (x,y) =(3,-2) implies that y = -2

Hence, the second set is wrong

5 0
3 years ago
Find the value of x acellus help please
ipn [44]

Answer:

10

Step-by-step explanation:

By Basic Proportionality Theorem:

\frac{4}{10}  =  \frac{x}{25}  \\  \\ x =  \frac{4 \times 25}{10}  \\  \\ x =  \frac{100}{10}  \\  \\ x = 10

7 0
3 years ago
Read 2 more answers
Jennifer, Luis, Robert, Anna, and Tonya are figuring out how to split the check for lunch.
kramer

8 + 15 = 23

23 - 65.45 = 42.46.

The rest of the people in the group split $42 and 46 cents.

Hope this helped!!

6 0
4 years ago
Read 2 more answers
Solve equation by factoring.
3241004551 [841]

Hi ;-)

x^2+6x-10=30 \ \ /-30\\\\x^2+6x-40=0\\\\a=1, \ b=6, \ c=-40\\\\\Delta=b^2-4ac=6^2-4\cdot1\cdot(-40)=36+160=196\\\\\sqrt{\Delta}=\sqrt{196}=14\\\\x_1=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-6-14}{2}=\boxed{-10}\\\\x_2=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-6+14}{2}=\boxed4

8 0
3 years ago
Beverage A and Beverage B are sold in identical cans. Beverage A is 6% sugar. The portion of Beverage B that is sugar is 0.21. H
muminat

Answer:

3.5 more times sugar in B

Step-by-step explanation:

We need to see that the fact that Beverage B is 0.21 sugar can be translated to percentages, just by multiplying and dividing by 100 to get it easier to see:

0.21 * 100 /100 =  21/100 = 21% percent

This means that for every 100 units, 21 are sugar.

Now we can compare percentages directly, as both have the same volume because are sold in identical cans. We need to get how many times is 21 greater than 6. The only thing we need to do is the ratio between them:

21/6= 3.5

This implies that 21 is 3.5 greater than 6, you can verify it by multiplying 6 by 3.5 and getting 21.

So, B has 3.5 times more sugar than A.

5 0
3 years ago
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