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3 years ago

Please please help i’ll give brainliest tysm :)

Mathematics

2 answers:

cluponka [151]3 years ago

8 0

Answer:

the tank can hold 12.5 gallons when it is full

Step-by-step explanation:

Let's assume tank can hold 'x' gallons when it is full we are given

The gas gauge in a car shows it has 40% of a tank of gas

So, gas in car is and we have the car has about 5 gallons so, we can set it equal

and then we can solve for x

Multiply both sides 5

we get

So, the tank can hold 12.5 gallons when it is full

Neko [114]3 years ago

3 0

Answer:

C) Between 9 and 13

Step-by-step explanation:

If 40% is 5 gallons, then 20% is 2.5 gallons

If you multiply both by 5, you get 12.5, which is between 9 and 13

Sorry for my weird way of math

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write an equation of the line passing through the point (6,3) that is perpendicular to the line 5x - 6y = 10

Jlenok [28]

Answer:

5x-6y-12=0

Step-by-step explanation:

...make y the subject y=-6/5x +2

...use the coefficient of x as the gradient,m=-6/5

...for a perpendicular line,find the negative reciprocal of the gradient,5/6

...sub into the eqn y= -1/m(x-a)+b

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3 years ago

The Jayden family eats at a restaurant that is having a 15% discount promotion. Their meal costs $78.72 before the discount, and

Scorpion4ik [409]

If I’m not mistaking it is either 80.29 or 80.30 after rounding,I’m not sure.

4 0

3 years ago

Read 2 more answers

Z varies jointly with y and the square of x. If x=4 when y=−7 and z=−336, find x when z=36 and y=3.

mario62 [17]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\$

$\bf \textit{z varies jointly with y and the square of x}\qquad z=kyx^2
\\\\\\
\textit{we also know that }
\begin{cases}
x=4\\
y=-7\\
z=-336
\end{cases}\implies -336=k(-7)(4)
\\\\\\
\cfrac{-336}{-28}=k\implies 12=k\qquad \qquad \boxed{z=12yx^2}
\\\\\\
\textit{when z=36 and y=3, what is \underline{x}?}\qquad 36=12(3)x^2
\\\\\\
\cfrac{36}{12\cdot 3}=x^2\implies \sqrt{\cfrac{36}{12\cdot 3}}=x$

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3 years ago

Read 2 more answers

I need help on this pleas,what is 9 ÷ 1/5

Mekhanik [1.2K]

Answer:

Step-by-step explanation:

Flip the fraction, 1/5 to 5/1, and reverse the equation to a multiplication problem.

$1/5 \rightarrow 5/1\\9 \cdot 5/1 = 45$