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Verdich [7]
3 years ago
8

What is the solution of the system? Use the elimination method. 2x+y=20 6x?5y=12

Mathematics
2 answers:
emmasim [6.3K]3 years ago
5 0

Answer:

(22, - 24)

Step-by-step explanation:

Whitepunk [10]3 years ago
3 0

Answer:

(22, - 24)

Step-by-step explanation:

Multiply the first equation by -5 to make the y's so you can add the up to zero.

-5(2x + y = 20)

-10x - 5y = -100  Add the second equation thn solve for x

<u> 6x + 5y = 12  </u>

-4x = -88  

x = 22

Plug 22 in for x in either equation

2x + y = 20

2 (22) + y = 20

44 + y = 20

y = -24

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Jenny and Chris share some prize money in the ratio 2:4. The prize money totaled $3000. How much did Chris win?
mafiozo [28]
Solution for What is 2.4 percent of 3000:

2.4 percent *3000 =

(2.4:100)*3000 =

(2.4*3000):100 =

7200:100 = 72
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6 0
2 years ago
ANSWER QUICK!!! IM TAKING A TEST AND I WILL MARK BRAINLIEST!!!
gtnhenbr [62]

Answer:

C = 5Q

Step-by-step explanation:

C = Length of Cloth in Meters (C)

Q = Number of Quilts Made (Q)

C = 5Q

Change C for the numbers under (Length of Cloth in Meters (C))
Nad change Q for the numbers under (Number of Quilts Made (Q))

So the new equations would be:

0 = 5(0) --------->  0 = 0

5 = 5(1) ---------> 5 = 5

10 = 5(2) ---------> 10 = 10

15 = 5(3) ---------> 15 = 15

20 = 5(4) ---------> 20 = 20

25 = 5(5) ---------> 25 = 25

So the only option that amkes sense is (C = 5Q)

3 0
2 years ago
Information on a packet of seeds claims that 93% of them will germinate. Of the 200 seeds that I planted, only 175 germinated. (
Anvisha [2.4K]

Answer:

We reject H₀

we accept Hₐ seeds in the packet would germinate smaller than 93%

Step-by-step explanation:

Test of proportions

One tail-test  (left side)

93 %   =  0.93

p₀  =  0,93

1.- Hypothesis

<h3>H₀            ⇒ null  hypothesis                p₀ = 0.93</h3><h3>Hₐ            ⇒ Alternative hypothesis     p  = 0.875</h3><h3>2.-Confidence interval   95 %</h3><h3>α = 0,05  </h3><h3>and </h3><h3>z(c)  =  -  1.64</h3><h3>3.- Compute z(s)</h3><h3>z(s) = (p  -  p₀)/√(p₀*q₀)/n    z(s) = (0.875-0.93)/√0.93*0.07)200</h3><h3>z(s) =  -  0,055/ √0.0003255</h3><h3>z(s) =  - 0.055/ 0.018</h3><h3>z(s) =  - 3,06</h3><h3>4.-Compere z(c)   and  z(s)</h3><h3>z(s)  <  z(c)          -3.06  <  -1.64</h3><h3>z(s)  is in rejection region, we reject H₀</h3>
5 0
3 years ago
If there are 60 seconds in an minute, 60 minutes in an hour, 24 hours in a day, and 7 days in a week, how many seconds are in a
DerKrebs [107]

Answer:

604,800

Step-by-step explanation:

Hope this helps! :)

7 0
3 years ago
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vovangra [49]

Answer:

4 I think

Step-by-step explanation:

I divided 80 by 40

6 0
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