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Nookie1986 [14]
3 years ago
5

22. Solve the system

Mathematics
1 answer:
DaniilM [7]3 years ago
8 0
Equation 1)  x + 6y = 2
Equation 2)  5x + 4y = 36

Multiply all of equation 1 by 5.

1)  5(x + 6y = 2)

Simplify.

1)  5x + 30y = 10
2)  5x + 4y = 36

Subtract equations from one another.

26y = -26

Divide both sides by 26.

y = -1

Plug in -1 for y in the first equation.

x + 6y = 2

x + 6(-1) = 2

Simplify.

x - 6 = 2

Add 6 to both sides.

x = 8

D : (8, -1)

~Hope I helped!~
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5. (03.02 MC)
inn [45]

Answer:

f(4) =2

Step-by-step explanation:

f(x) = 2х^2 - 30,

Let x=4

f(4) = 2 (4)^2 -30

     = 2*16 -30

       =32-30

      = 2

6 0
3 years ago
A 15 foot ladder is placed on the top of a wall. The distance from the bottom of the wall to the bottom of the ladder is 7 feet.
kati45 [8]

The height of the wall from the question is 13.27ft

<h3 /><h3>Pythagoras theorem </h3>

The theorem states that the square of the longest side is equal to the sum of square of other two sides.

From the given question

Hypotenuse (ladder length) = 15ft

Adjacent = 7feet

Required

Height of the wall H

According to the theorem

15² = 7² + H²

H² = 225 - 49

H² = 176

H = 13.27feet

Hence the height of the wall from the question is 13.27ft

Learn more on pythagoras theorem here; brainly.com/question/343682

#SPJ1

5 0
2 years ago
Arjun is putting his football cards in order from lowest number to highest number. He only has two cards in the 300s. One card i
luda_lava [24]

Answer:

Step-by-step explanation:

numbers greater than 361 are 364,374,384,394

numbers less than 361 are 304,314,324,334,344,354

7 0
3 years ago
Si en 1950 el 30% de la población global, alrededor de 700 millones de personas habitaban
kramer

Answer:

zonas urbanas =>  30  % de la poblacion => 700 millones

poblacion total =>  100 % de la poblacion =>   x      =>  2333.3 millones

poblacion rural => 70% de la poblacion => x - 700  => 1633.33 millones

x = \frac{700 \times100}{30} =2333.3

x-700=2333.3-700=1633.33\\

8 0
3 years ago
Deciaml equvalent to 7/8
nordsb [41]

Answer:

0.875

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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