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Tema [17]
2 years ago
8

Please help, i need help with solving!

Mathematics
2 answers:
yan [13]2 years ago
7 0

Answer:

Your answer is

x=3.6

y= 0.4

Hope that this is helpful. Tap the crown button, Mark my answer as............. BRAINLIST......... Like & Follow me to get more answer.

wolverine [178]2 years ago
4 0

Answer:

x = 3.6, y = 0.4

Step-by-step explanation:

make x the subject in equation 1:

x = 4 - y (equation 3)

substitute equation 3 into equation 2:

2(4-y) - 3y = 6

8 - 2y - 3y = 6

8 - 6 = 5y

2 = 5y

y = 2/5

y = 0.4

substitute (y=0.4) into equation 3:

x = 4 - 0.4

x = 3.6

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A furniture store is having a sale on sofas and you're going to buy one. The advertisers know that buyers get to the store and t
MrRissso [65]

Answer:

$290

Step-by-step explanation:

We are told that 1 out of 5 buyers change to a more expensive sofa than the one in the sale advertisement.

Now we are told that the advertised sofa is $250 and the more expensive sofa is $450.

Thus;

P(x) for expensive sofa = 1/5

P(x) for sofa in sale advertisement = 4/5

Thus, expected value is;

E(X) = (1/5)450 + (4/5)250

E(x) = 90 + 200

E(x) = $290

6 0
2 years ago
Determine if the following system of equations has no solutions, infinitely many
FrozenT [24]

Answer:

infinitely many solutions

Step-by-step explanation:

x + 6y = -5

3x + 18y = -15

Multiply the first equation by 3

3(x + 6y) = -5*3

3x + 18y = -15

The two equations are identical.  This means they have infinite solutions along the line x+6y = -5

8 0
3 years ago
Find the area and perimeter
mihalych1998 [28]

Answer:

Area=2232 square ft

Perimeter=206 ft

Step-by-step explanation:

given

the diagram is a rectangle

length=72 ft

width=31 ft

we know that

formula of the area of rectangle= length × width

Area=72×31 square ft

Area=2232 square ft

Now calculate the perimeter

perimeter of rectangle=2(length+width)

perimeter=2(72+31)

perimeter=2(103)

perimeter=206 ft

6 0
1 year ago
Using the completing-the-square method, rewrite f(x) = x2 - 8x + 3 in vertex form.
Leto [7]

Answer:

B

Step-by-step explanation:

Given

f(x) = x² - 8x + 3

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² - 8x

x² + 2(- 4)x + 16 - 16 + 3

(x - 4)² - 13 ← in vertex form → B

5 0
3 years ago
Leona spent 35.98 at the mall. She bought a T-shirt and a book. The book cost 18.25. How much did the T-shirt cost?
horsena [70]
35.98 - 18.25 = 17.73

The t-shirt cost her 17.73.
3 0
3 years ago
Read 2 more answers
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