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AURORKA [14]
3 years ago
9

1 thanks for your help!

Mathematics
1 answer:
Alenkinab [10]3 years ago
3 0

Answer:

Solution is

(\frac{1}{2},\frac{-3}{2})

Which is Option C

Step-by-step explanation:

We are given the equations

4x - 6y = 11                     ...............(i)

3x+y = 0                         ..............(ii)

Now from equation (ii) we have

3x + y = 0

subtracting 3x from both sides we get

3x + y - 3x = 0 - 3x

y = -3x                       ....................(iii)


substituting this value in equation (i) which is

4x - 6y =11

Putting the value of y

4x - 6(-3x) = 11

4x + 18x = 11

22x = 11

Dividing both sides by 22

we get

\frac{22x}{22}=\frac{11}{22}

or

x=\frac{1}{2}

Now we have equation (iii) which tells us that

y= -3x

Putting value of x here

y = -3(\frac{1}{2})

It becomes

y = \frac{-3}{2}

So

Solution set of the equation is

(\frac{1}{2},\frac{-3}{2})



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soybean meal is 16% protein; cornmeal is 8% protein. how many pounds of each should be mixed together in order to get 320-lb mix
nlexa [21]

Answer:

120 lb of soybean meal

200 lb of cornmeal

Step-by-step explanation:

S = pounds of soybean meal

C = pounds of cornmeal

S + C = 320  →  C = 320 – S

0.16S + 0.08C = 0.11 × 320 = 35.2

16S + 8C = 3520

16S + 8(320 – S) = 3520

16S + 2560 – 8S = 3520

8S + 2560 = 3520

8S = 960

S = 120

C = 320 – 120 = 200

7 0
3 years ago
12. Jessie drove 30 miles in 55 minutes. If she continues at the same speed, how many
pentagon [3]
The answer is 92/8/11 or 1020/11

Reason: 170/55=34/11

34/11x30= 92/8/11 or 1020/11
4 0
4 years ago
5. The volleyball team has a double-header on Friday. The probability that they
Nikolay [14]

Answer: 54.29%

Step-by-step explanation:

Given: The probability that they  will win both games is 38%.

i.e. P( both games will win) =0.38

The probability that they will win just the first game is  70%.

P(first game will win) = 0.70

To find : P(second game will win| first game will win)

Using formula: P(B|A)=\dfrac{P(\text{both A and B})}{P(A)}

So, P(second game will win| first game will win) = \dfrac{\text{ P( both games will win)}}{\text{P(first game will win)}}

=\frac{0.38}{0.70}\approx0.5429=54.29\%

Hence, the required probability = 54.29%

4 0
3 years ago
36 is 50% of what number?
krek1111 [17]
x-searched\ number\\\\50\%=0.5\\\\36=0.5x\ \ \ \ |\cdot2\\\\x=72\\\\36\ is\ 50\%\ of\ 72.
5 0
4 years ago
Read 2 more answers
Anyone for 10 points??!!!<br> The question is in the image<br> Thanks But answer ASAP!
ivanzaharov [21]
Bottom Side Surface Area:

(24 inches + 24 inches + 24 inches) * (30 inches)

= 72 inches * 30 inches

= 2160 inches squared


--------

Top Side Surface Area:

24 inches * 30 inches

= 720 inches squared

--------

Length of the diagonal (D) which needs to be measured:

*Use Pythaogras's theorem...

24^2 + 10^2 = D^2

D=√(24^2+10^2)

D=26 inches

------------

Measure the surface area of the two ramps:

26 inches * 30 inches * 2

= 1560 inches squared

-----------

Total surface area:

2160 inches squared + 720 inches squared + 1560 inches squared

= 4440 inches squared

---------

Answer:

4440 square inches
8 0
4 years ago
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