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stiks02 [169]
3 years ago
5

Solve the system of equations -7x - 6y = 4 x= -3y + 8

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
7 0
You can use the substitution method for this problem
Since -3y+8=x you can
Use the equation -7(-3y+8) -6y=4
You then distribute and solve
21y-56-6y=4
15y=60
Y=4
You then plug y into one of the original equations
X=-12+8
X=-4
(-4,4)
You might be interested in
What is simplI find form of the expression-(4)-2
nevsk [136]
-(4)-2 = -4-2= -6
Hope that helps you
3 0
3 years ago
Gulf gully and jump rope road are a pretty far distance.If the scale for the map is 0.5 inches=2.3 miles,what is the actual dist
mezya [45]

Answer:

12 cm = 21.62 miles

6 cm = 11.04 miles

Step-by-step explanation:

To find the distance, set up a proportion. A proportion is two equal ratios set equal to each other. We form the ratios by using corresponding values. We write a ratio of \frac{map}{real world} and simplify.

We know \frac{map}{real world}=\frac{0.5in}{2.3 miles}. We know the distance on the map is 12 cm and 6 cm whish converts to 4.7 inches and 2.4 inches. We can write \frac{4.7in}{xmiles} and  \frac{2.4in}{xmiles}

We set them equal.

\frac{0.5}{2.3}=\frac{4.7}{x}

and

\frac{0.5}{2.3}=\frac{2.4}{x}

To solve each proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

2.3(4.7)=0.5(x)\\10.81=0.5x\\\frac{10.81}{0.5}=\frac{0.5x}{0.5} \\21.62 miles=x

and

2.3(2.4)=0.5(x)\\5.52=0.5x\\\frac{5.52}{0.5}=\frac{0.5x}{0.5} \\11.04 miles=x

5 0
3 years ago
Use the following information to answer the exercise. A vacation resort rents SCUBA equipment to certified divers. The resort ch
Phoenix [80]

Answer:

Dependent: fee

Independent: time

Step-by-step explanation:

The scenario described in question indicates that fee is the dependent variable and time is independent variable. The reasoning is that fee depends on the time(hour). The fee will increase as the time increases. Whereas change in time cause change in fee. So, fee is the dependent variable and time is independent variable.  

5 0
2 years ago
If two sides are 36 feet what length is the long side and what type of triangle is it?
Aleks04 [339]

Answer: maybe 50.9

Step-by-step explanation: we can use the pythagorean theorem A^+B^=C^

36 x36 = 1,296

1,296 + 1,296 = 2,592

square root of 2,592 = 50.911688245431421756860794071549 rounded to 50.9

so your answer maybe 50.9

5 0
2 years ago
An athlete jumped 5.5 feet which was 1.1 times higher than the previous jumper how high did the previous athlete jump
Fantom [35]

Answer:

5 ft

Step-by-step explanation:

Let the height of the previous jump be represented by j.  Then 1.1j = 5.5 ft.

Dividing both sides by 1.1, we get j = 5 ft.  This was the height of the previous jump.

3 0
3 years ago
Read 2 more answers
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