4 years ago

What is the correct way to figure out how much gas a car needs to go one mile if it gets 51 miles per gallon ?

Mathematics

1 answer:

8090 [49]4 years ago

5 0

Answer:

5.78 gallons of gas

Step-by-step explanation:

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George found 48 nickels and dimes on the ground. They totaled $4.40 in value. Write two equations that express this.

yaroslaw [1]

N+d=48
n+d=4.40

am not sure of the equation tho

7 0

3 years ago

A line passes through the points (2,2) and (5,8). What is its equation in slope-intercept form?

Vsevolod [243]

Answer:

y=2x+6

Step-by-step explanation:

Slope of line is 2

Plug slope and first set of coords into point-slope intercept form

3 0

3 years ago

Simply (tan^2 x - sec^2 x)(sin^2 x + cos^2 x)

kati45 [8]

we can use pythagorean identieis

remember that $sin^2(x)+cos^2(x)=1$

also remember that $tan(x)=\frac{sin(x)}{cos{x}}$ and $sec(x)=\frac{1}{cos(x)}$

so if we take $sin^2(x)+cos^2(x)=1$ and divide both sides by $cos^2(x)$ we get

$\frac{sin^2(x)}{cos^2(x)}+\frac{cos^2(x)}{cos^2(x)}=\frac{1}{cos^2(x)}$

$(\frac{sin(x)}{cos(x)})^2+1=(\frac{1}{cos(x)})^2$

$tan^2(x)+1=sec^2(x)$

subtracting $1+sec^2(x)$ from both sides

$tan^2(x)-sec^2(x)=-1$

now subsitute into original problem

$\frac{tan^2(x)-sec^2(x)}{sin^2(x)+cos^2(x)}=$

$\frac{-1}{1}=$

$-1$

the answer is -1

6 0

3 years ago

Solve the quadratic equation <br> X^2+3x-70=0

matrenka [14]

Answer:

X can either be 7, or -10. You can prove this by plugging in the numbers yourself :)

Step-by-step explanation:

Please mark as brainliest

4 0

3 years ago

Read 2 more answers

A math club has a total of 41 girls and boys in it. The number of girls is 5 more than 2 times the number of boys.

Vinvika [58]

Answer:

the answer is an orgy

Step-by-step explanation:

there is no way that many girls and boys are in the same room without having an orgy...

3 0

3 years ago