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Shkiper50 [21]
3 years ago
7

Бx + 4y= 18 —бх+ бу = -18​

Mathematics
1 answer:
sertanlavr [38]3 years ago
7 0

Answer:

x= 3

y = 0

Step-by-step explanation:

•Add the two equations to cancel out +6x and -6x

•Find the value of y

•Substitute the value of y into equation 1 to find the value of x.

Hope I was able to help you:)

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50% of the apartments in a certain building have windows and hardwood floors. 25% of the apartments without windows have hardwoo
alexdok [17]

Answer:E 83\frac{1}{3}

Step-by-step explanation:

50% of the apartment in a certain building have windows and hardwood floors.

25% of the remaining 50% apartment without window have hardwood floors.

40% of the apartment do not have hardwood floors i.e. 60 % have hardwood floor

Therefore percent of the apartments with windows have hardwood floors is

=\frac{50 percent of total\ apartment }{60\ percent\ of\ apartment}

=83\frac{1}{3}%

6 0
3 years ago
Can some help me with this
inn [45]

Answer:

Naw I can't help ya I gotta find my notes

4 0
3 years ago
charity is four times as old as her daughter. she is also six years younger than her husband. The sum of their ages ten years to
Pachacha [2.7K]

Answer:

36years

Step-by-step explanation:

Let charity present age be x

Charity daughter present age be y

Charity husband present age be z

If the sum of their ages ten years to come is 117, then;

10+x+10+y+10+z = 117

30+x+y+z = 117

x+y+z = 87 ... 1

If charity is four times as old as her daughter, then;

x = 4y

y = x/4 ... 2

If she is also six years younger than her husband, then;

x = z- 6

z = x+6 .. 3

Substitute 2 and 3 into 1;

x + x/4 + (x+6) = 87

Multiply through by 4

4x + x + 4(x+6) = 4(87)

5x+4x+24 = 348

9x = 348 - 24

9x = 324

x = 324/9

x = 36

hence Charity is 36years old today

5 0
3 years ago
Can someone pls graph this for me ? ( just screenshot and use the marker tool to graph)
Furkat [3]
Answer: Y = -4 is four numbers down for the origin. Y = 0 is basically the origin (the center of the graph)
8 0
2 years ago
Help Asap! 20 points! I have to pass math!
kirill115 [55]
12 is the answer to this question
7 0
3 years ago
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