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Alex17521 [72]
3 years ago
15

Please help me! I'm having trouble with these 2 questions! 40 points!!

Mathematics
1 answer:
anygoal [31]3 years ago
3 0

Answer:

Step-by-step explanation:

3.

2x=-10y+6

or x=-5y+3

or x+5y+3

also x=5y+3

it  has infinitely many solutions.

c

4.y=5x+7

y=5x+8

or 5x+7=5x+8

or 7=8

which is impossible.

it has no solution.

c

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at the start of 2014 lucys house was worth 200000. the value of the house is increased by 5% every year. work out the value of h
Galina-37 [17]

Answer:

231525

Step-by-step explanation:

2014 = 200,000

Start of 2015

200,000 x 1.05 = 210,000


Start of 2016

210 x 1.05 = 220,500


Start of 2017

220,000 x 1.05 = 231,525

8 0
3 years ago
felice bought 3/4 of a pound of american cheese at the dell she used 1/2 of the cheese to make sandwhiches how much cheese did s
andrew11 [14]
She used 2/4 pou.ds of cheese, or 8 ounces, or just a half-pound.
3 0
3 years ago
The length is 2 feet longer than the width. The perimeter is 36 feet, what is the length?
SOVA2 [1]

Answer:

The length would be 10ft and the width would be 8ft

Step-by-step explanation:

For the purpose of this, we'll set the width as x. We can then define the length as x + 2 since we know it is 2 ft longer than the width. Now we can use those along with the perimeter formula to solve for the width.

P = 2l + 2w

36 = 2(x + 2) + 2(x)

36 = 2x + 4 + 2x

36 = 4x + 4

32 = 4x

8 = x

Now since we know that the width is 8ft, we can add 2ft to it to get the length, which would be 10ft.

4 0
3 years ago
A company with offices in Anchorage, Alaska wants to lease 10 small planes to fly a group of clients to Nome for a summer fishin
Rama09 [41]

The solutions of the equations of the situation can be:

z = 1 , y = 5, x = 4

z= 2 , y = 3, x = 5

z=3 , y = 1, x = 6

z = 0 , y = 7, x =3

The question can be expressed as a equation

6 x + 8 y + 10 z = 84

also, x + y + z = 10

⇒ x = 10- y - z

Putting it in first equation,

6(10 - y - z ) +8y + 10z = 84

⇒ 60 +2y + 4z = 84

⇒2(y + 2z ) = 14

⇒ y + 2z = 7

Now putting

z = 1 , we get y = 5,

z= 2 , y = 3

z=3 , y = 1

z = 0 , y = 7

So, only 4 possible solutions.

Therefore, there can only be 4 possible solutions for the equations.

"Learn more about linear equation here-

brainly.com/question/28442870 "

#SPJ9

8 0
10 months ago
Is the following statement always, sometimes, or never true? “The supplement of an acute angle is an obtuse angle.” Explain your
balu736 [363]

Answer:

Always

Step-by-step explanation:

An acute angle is an angle that is less than 90. Supplementary angles add up to 180.

So 180-89= 91

An obtuse angle is any angle that is greater than 90.

Here's a link to a better explanation.

brainly.com/question/14180317

7 0
3 years ago
Read 2 more answers
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