All categories

3 years ago

Solve for x: -3x + 4 = -8

2 answers:

6 0

Hi there, to solve this problem we have to do this, Add -4 on both sides, 4+-4+-3x=-8+-4. Now you should have, -3x=-12. Lastly, we divide each side by -3, which gives us x=4. Therefore, the answer is x=4. Hoped I helped. :)

Virty [35]3 years ago

4 0

- 3 x + 4 = - 8

subtract 4 from both sides :

- 3 x + 4 - 4 = - 8 - 4

- 3 x = - 12

Divide both sides by : - 3

- 3 x / 3 = - 12 / - 3

x = 12 / 3

x = 4

hope this helps!

You might be interested in

Find the measure for angle B.

Semenov [28]

Answer:

51⁰

Step-by-step explanation:

The angles are the same

6 0

3 years ago

a potato is fired from a spud gun at a height of 3M and an initial velocity of 25 meters per second, write the equation of this

gizmo_the_mogwai [7]

Check the picture below, the height there uses feet, but nevermind that, we can simply let it be meters, like in this case.

$\bf ~~~~~~\textit{initial velocity}
\\\\
\begin{array}{llll}
~~~~~~\textit{in meters}
\\\\
h(t) = -4.9t^2+v_ot+h_o
\end{array} 
\quad 
\begin{cases}
v_o=\stackrel{25}{\textit{initial velocity of the object}}\\\\
h_o=\stackrel{3}{\textit{initial height of the object}}\\\\
h=\stackrel{}{\textit{height of the object at "t" seconds}}
\end{cases}
\\\\\\
h(t)=-4.9t^2+25t+3$

how hight does it go? well, that'd be the y-coordinate of the vertex.

how long does it take? well, that'd be the x-coordinate of the vertex.

$\bf \textit{vertex of a vertical parabola, using coefficients}
\\\\
\begin{array}{lcccl}
h(t) = & -4.9t^2& +25t& +3\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}
\qquad 
\left(-\cfrac{ b}{2 a}\quad ,\quad c-\cfrac{ b^2}{4 a}\right)
\\\\\\
\left(-\cfrac{25}{2(-4.9)}~~,~~3-\cfrac{25^2}{4(-4.9)} \right)\implies \left( \cfrac{25}{9.8}~~,~~3-\cfrac{625}{-19.6} \right)
\\\\\\
\left( \cfrac{25}{9.8}~~,~~3+\cfrac{625}{19.6} \right)\implies \left( \cfrac{25}{9.8}~~,~~\cfrac{3419}{98} \right)$

3 0

3 years ago

Can someone teach me how to do this?

vladimir1956 [14]

the formula is a_{1}+(n-1) d

so a_{1} would be the first number in the sequence, which would be 13 in problem 9.

13+(n-1)d

then you put in n, which is 10 (it represents which number in the sequence you're looking for, for example 16 is the second number in the sequence)

13+(10-1)d

then you find the difference between each number, represented by d which in this case is 3

13+(10-1)3

13+(9)3

13+27=

5 0

3 years ago

a DLT earns $14 an hour when she works days and $18 an hour when she works nights. One month shr works six 4 hour days, 3 eight

mina [271]

I think the answer is $1,092?

3 0

4 years ago

from 1950 to 1970, some glacier thinned by an average of 1.7 ft per year. what was the change in glacier thickness during this p

TEA [102]

Answer:

34 feet

Step-by-step explanation:

1.7 times 20

5 0

3 years ago