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3 years ago

Here you go amiragumbs2

Mathematics

1 answer:

Simora [160]3 years ago

5 0

Umm , what is this for? do you need help on anything or? lol

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x + 3y = 7 x - 3y = 1 Solve the system of equations. A) x = 4, y = 1 B) x = 1, y = 4 C) x = - 2 3 , y = 3 Eliminate D) x = 3, y

Anit [1.1K]

Answer:

x=4, y=1

Step-by-step explanation:

x + 3y = 7

x - 3y = 1

Add the equations together to eliminate y

x + 3y = 7

x - 3y = 1

---------------------

2x = 8

Divide by 2

2x/2 = 8/2

x = 4

Subtract the two equations to eliminate x

x + 3y = 7

-x + 3y = -1

----------------------

6y = 6

Divide by 6

6y/6 = 6/6

y =1

6 0

3 years ago

olivia has $180 to buy presents for her 3 sisters and 2 nephews. She wants to spend $15 more on each sister than she spends on e

koban [17]

So
if x is the number she spent on each sister and y is the number she spent on each nephew then
180=3x+2y

she wants to spend 15 dollars more on sisters than nephews
so
x=15+y
solve

we have
180=3x+2y and
x=15+y
subsitute 15+y for x

180=3(15+y)+2y
180=45+3y+2y
180=45+5y
minus 45 both sides
135=5y
divide both sides by 5
27=y

solve for x
x=15+y
x=15+27
x=42

she spent $42 on each sister

6 0

3 years ago

H(t)= |t+2|+3; Find h(6)

balandron [24]

$h(t)=|t+2|\\\\h(6)\to\text{put the value of t = 6 to the equation of the function:}\\\\h(6)=|6+2|=|8|=8\\\\Answer:\ \boxed{h(6)=8}\\\\|a|=a\ for\ a\geq0\\\\examples:\\\\|6|=6;\ |0.5|=0.5;\ |0|=0\\\\|a|=-a\ for\ a$

5 0

3 years ago

2.Yolanda is buying supplies for school. She buys n packages of pels at $1.40 per package and m pads of paper at $1.20 each. Wha

Lubov Fominskaja [6]

Answer: 1.4n represents the cost of n packages of pels.

1.20m represents cost of m pads.

Entire expression 1.4n + 1.20m represents total cost of n packages of pels and m pads.

Meaning of 1.4n = cost of n packages of pels.

Meaning of 1.20 m = represents cost of m pads.

where , 1.4 = Cost per package of pels

1.2 =Cost per pad of paper

Step-by-step explanation:

Given: Cost per package of pels = $1.40

Cost per pad of paper = $1.20

Number of packages of pels bought = n

Number of pads of paper bought = m

So, 1.4n represents the cost of n packages of pels.

1.20m represents cost of m pads.

Entire expression 1.4n + 1.20m represents total cost of n packages of pels and m pads.

Meaning of 1.4n = cost of n packages of pels.

Meaning of 1.20 m = represents cost of m pads.

where , 1.4 = Cost per package of pels

1.2 =Cost per pad of paper

7 0

3 years ago

Gail runs a taxi.

grigory [225]

Answer:

£37

Step-by-step explanation:

£1.90x20

= £38

£75-£38

=£37

4 0

3 years ago