Solve using substitution, y=2x+5 y=6x+1

Answers

Answer 1

Answer: y = 2x+5
y = 6x+1

Just substitute.

y = 2x+5
6x+1 = 2x+5
6x-2x = 5-1
4x = 4
x = 1

Then, insert x = 1 into one of the equation. Let's say I choose number one.
y = 2x+5
y = 2(1) + 5
y = 7

Answer 2

Answer: y=2x+5
y=6x+1

y=2x+5
2x+5=6x+1

y=2x+5
2x-6x=1-5

y=2x+5
-4x=-4 / : (-4)

y=2x+5
x=1

x=1
y=2*1+5

x=1
y=2+5

x=1
y=7

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Pythagorean theorem

Answers

A^2+B^2=C^2 A^2+6^2=8^2
A^2+36=64
-36 -36
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Tracy goes on a 3 day and night school band trip. There is no cost for travel and each band member only pays half the cost of the hotel room. However, each person is responsible for the cost of their own meals. His portion of the hotel bill is $49 per night and Tracy leaves a 10% tip for the maid service. Before tax, Tracy spends $32 per day on eating out plus 15% of this amount in tips. If Tracy spends a total of $280.74 on the band trip, what percent tax was Tracy charged on his food?

Answers

The total amount she spent is equal to the sum of the amount for food and hotel accommodation. Letting x be the percent tax that Tracy was charged for his food, the equation that best represent the given is,
280.74 / 3 = 49 + (0.10)(49) + 32 + (0.15)(32) + (x)(32)
The value of x from the equation is 0.09. Thus, Tracy is charged 9% tax on his food.

Answer:

Step-by-step explanation:

Justin weighs 15 pounds less than Greg weighs. Half of Greg’s weight is 75 pounds less than Justin’s weight. How much does each of them weigh? Greg weighs 200 pounds, and Justin weighs 185 pounds. Greg weighs 190 pounds, and Justin weighs 175 pounds. Greg weighs 180 pounds, and Justin weighs 165 pounds. Greg weighs 170 pounds, and Justin weighs 155 pounds.

Answers

J=G-15
(G/2)=J-75

Substitute
(G/2)=G-15-75
G/2 =G-90
G-G/2= 90
G/2=90
G=180

J=G-15=180-15=165

Greg weighs 180 pounds, and Justin weighs 165 pounds.

Answer:

180 and 165

The area of a square with sides of 2 feet is 4 square feet. The area of a square with sides of 4 feet is 16 square feet. what equation fits this data?Choices

y=4x
or
y=x+2
or
y=x squared
or
y=2x

Answers

A square, by definition, is an equilateral quadrilateral. It has already been established that the formula for the area of a square is to take the square of the length of its one side. To prove this,

A = 2^2 = 4
A = 4^2 = 16

Thus, the equation is y = x squared

If 70% is £14 what is the full cost?
PLEASE HELP ASAP

Answers

70% of 14
10%=14/10=1.4
70%=1.4x7=9.8

In general, when a number written in scientific notation includes a positive exponent, the absolute value of that number is __________.

Answers

In general, if a number is written in a scientific notation which includes an exponent that is positive, the absolute value of that number is positive. This is because if the number is bigger than 1 and it is in absolute value, then that means it is a positive number.

positive exponents are big numbers; so your number gets bigger

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