All categories

3 years ago

What is the solution to the equation?

Mathematics

1 answer:

Sholpan [36]3 years ago

4 0

Answer:

Step-by-step explanation:

-8x+4=20

-8x=20-4

x=16/-8

x=-2

Please mark as brainliest

You might be interested in

The following points for a function are graphed in the coordinate plane: (1, 2), (3, 8), (4, 11), and (6, 17).

ExtremeBDS [4]

Answer:

y=3x-1 is your answer and now I have to add stuff

6 0

3 years ago

Last year you mowed grass and shoveled snow for 22 households.

Doss [256]

Step-by-step explanation:

Let x be the number of households you mowed grass.

Let y be the number of households you shoveled snow.

From there, we know,

$x + y = 22$

as equation 1.

next we also know,

$150x + 225y = 3900$

as equation 2.

From here we know we can solve using simultaneous equations.

rearranging equation 1 with y the subject,

$y = 22 - x$

Substitute this equation into equation 2.

$150x + 225(22 - x) = 3900 \\ 150x + 4950 - 225x = 3900 \\ - 75x + 4950 = 3900 \\ - 75x = 3900 - 4950 \\ - 75x = - 1050 \\ x = - 1050 \div - 75 \\ = 14$

now substitute x = 14 into equation 1.

$14 + y = 22 \\ y = 22 - 14 \\ = 8$

Therefore, you have mowed grass for 14 households and shovelled snow for 8 households.

3 0

3 years ago

The number of hours (H) that a candle will burn increases when the length of the candle (L) increases. Write the correct equatio

jeka94

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
%. Length Hours 15 3 20 4
\begin{array}{ccllll}
length&hours\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
15&3\\
20&4
\end{array}\\\\
-------------------------------\\\\$

$\bf \textit{H increases as L increases}\implies H=kL
\\\\\\
\textit{from the table above, we also know that }
\begin{cases}
L=15\\
H=3
\end{cases}
\\\\\\
3=k15\implies \cfrac{3}{15}=k\implies \cfrac{1}{5}=k\quad thus\quad \boxed{H=\cfrac{1}{5}L}
\\\\\\
\textit{now, what is H when L = 2}\qquad H=\cfrac{1}{5}\implies \cdot 2$

4 0

3 years ago

Read 2 more answers

An athlete eats 85 grams of protein per day while training. How much is this in milligrams (mg)? plz hurry I have a test soon

Ganezh [65]

<h2>Answer:</h2><h3 /><h3>Your answer would be <u>85,000 milligrams.</u></h3><h2></h2><h2>Step-by-step explanation:</h2><h3 /><h3>The conversion rate for grams to milligrams is 1 Gram = 1000 Milligrams, so I multiplied 85 by 1000 on i got my answer which is <u>85,000 Milligrams.</u></h3><h3><u /></h3><h3> Hope this helped! and have a great day!</h3>

4 0

3 years ago

A company produces two articles A and B with the following data: to produce A employs 5 workers and consumes 100 kg of materials

dlinn [17]

I can't understand the question the last three lines are weird

3 0

3 years ago