Answer:
x=−7
Step-by-step explanation:
Step 1: Add 5 to both sides.
−3x−5+5=16+5
−3x=21
Step 2: Divide both sides by -3.
−3x/−3=21/−3
Answer:
x = -7
Step-by-step explanation:
Hello.
I can help.
To solve algebraic equations all you need to do is get rid of everything on the side of the x except the x.
Lets look at your problem.
-3x - 5 = 16
An important thing to note is we are going to get rid of things on the left side of the = by doing the opposite of what they're doing.
If it is addition we do subtraction
If it is division we do multiplication
and so on.
ALSO
Whatever we do on the left side of the = we must do the same thing to the number on the right.
Now, let us start trying to solve this.
You always want to start with the number that is alone without the variable / letter.
So :
-3x - 5 = 16
Since it is -5 lets add 5 to make it 0 and get rid of it.
-3x - 5 = 16
+5 +5
(Remember to do it to the other side of the = too)
Now we have :
-3x = 21
Now we want to get rid of the 3 attached to the x. And since these two are multiplying we need to divide the -3 by itself to make it 1. Since one number divided by itself is 1.
So like this :
-3x = 21
/-3 /-3
NOTE : When you are dividing or multiplying negative numbers there is an important key to be aware of. Here is a short key to go off of :
- x - = +
- x + = -
So a negative times a negative will be a positive.
While a positive times a negative, the negative will over ride the positive and the answer will be negative.
Going back to the equation, here is what we do :
-3x / -3 = +x (Not negative)
And :
21 / -3 = -7 (Is negative)
So now our equation is :
x = -7
And this is our final answer.
I hope this helped.
If you have any questions or concerns do comment or message me. :)
What is the slope of y=-4
Answer:
0
Step-by-step explanation:
The slope would be 0 because the y value is not increasing.
Answer:
the slope is 0
Step-by-step explanation:
eighteen divided by the sum of two and seven
Numerical expression.
Answer:
D
Step-by-step explanation:
Raymond's bake shop sold 26 1/2 cupcakes on Saturday on Friday the bake shop sold 19 3/4 dozen cupcakes what is the approximate percent increase in cupcake sales from Friday to Saturday
Answer: 34.18%
Step-by-step explanation:
Given: On Saturday, Number of cupcakes sold = [tex]26\dfrac12[/tex] dozens
= [tex]\dfrac{53}{2}[/tex] dozens
[tex]=\dfrac{53}{2}\times12[/tex] [ 1 dozen = 12 items]
[tex]=53\times6\\\\=318[/tex]
On Friday, Number of cupcakes sold = [tex]19\dfrac34[/tex] dozens
= [tex]\dfrac{79}{4}[/tex] dozens
[tex]=\dfrac{79}{4}\times12[/tex] [ 1 dozen = 12 items]
[tex]=79\times3\\\\=237[/tex]
Increase in cupcakes = 318-237=81
Percent increase in cupcakes sales from Friday to Saturday = [tex]\dfrac{81}{237}\times100[/tex]
= 34.18% (approx)
The approximate percent increase in cupcake sales from Friday to Saturday = 34.18%
Do the ratios 7/3 and 6/2 form a proportion.
Yes or no
Answer:
no it not really the same
Step-by-step explanation:
Answer:
No they are not proportional
Step-by-step explanation:
You first cross multiply
since the products do not match they are not proportional
If you have any more quesitons feel free to ask - Mark
can someone do this for me please
Step-by-step explanation:
3:5
B,D
7:8
E,F
5:9
b,H
4:1
c,g
URGENT BRAINLIEST HELPPP
Answer:
242 ft²
Step-by-step explanation:
8X18=144
7X14=98
144+98=242
can someone help I will mark you! ❤️❤️❤️
Answer:
slope is 3/2
Step-by-step explanation:
To solve for slope: y2-y1/x2-x1.
2 points can be (3,1) and (5,4)
4-1/5-3 ---> 3/2.
Also the slope is going up by 3 units and across by 2 units
The length of the base of a square pyramid is 30cm. The height of the pyramid is 45cm. What is the volume of the pyramid in cubic cm?
Step-by-step explanation:
45x30=1350cm
the ans is 1350cm
Find x, y and z
help i don’t know what to do, it’s the last question
Answer:
y=3
(bc it is the same length as its perpendicular counterpart.
x= 9 (same with Z)
(From pythagorean theorem)
6^2+3^2= (root of) 45
and square root 45
and it is the same as its counterpart (which is z)
Step-by-step explanation:
as I explained on the answer(it doesnt let this part be unwritten)
Pls help me no one explanation I will mark tysmmm
Answer:
1/4
Step-by-step explanation:
It's going 1 up and 4 across
brainliest if correct ill do giveaway if you give correct answer
Hailey had 29 DVDs. She went to the store and bought more. Now she has 33 DVDs. How many DVDs did she buy?
A.3 DVDs
B.4 DVDs
C.33 DVDs
D. 62DVDs
Answer:
option B 4 DVDs
Step-by-step explanation:
she bought 4 DVDs.
plz mark my answer as brainlist plzzzz. hope this will be helpful to you.
What is the solution to the system of equations below?
2x + 5y = 32
Answer:
x = 16 -5/2y
Step-by-step explanation:
2x + 5y = 32
2x = 32 -5y
/2 /2
x = 16 -5/2y
Answer:
y= 2x/5 + 6.4
Step-by-step explanation:
divide both sides by 2x
5y = 2x + 32
divide both sides by 5
y = 2x/5 + 6.4
follow same step to solve for x except first divide by 5y instead of 2x
Suppose someone gives you 6 to 1 odds that you cannot roll two even numbers with the roll of two fair dice. This means you win 6 dollars if you succeed and lose 1 dollar if you fail. What is the expected value of this game to you. What can you expect if you play 200 times
Answer:
0.75 ;
150
Step-by-step explanation:
Probability of rolling two even numbers :
{1, 2, 3, 4, 5, 6}
P(even) = 3 / 6 = 1/2
From a roll of 2 dice :
P(even) * P(even) = 1/2 * 1/2 = 1/4 = 0.25
P(not even) = 1 - 1/4 = 3/4
X : ____ 6 _______ - 1
P(x) ____ 0.25 ____ 0.75
Expected value :
Σx*p(x) = (6*0.25) + (-1 * 0.75)
= 1.50 - 0.75
= 0.75
If 200 games are played :, n = 200
Expected value * n
0.75 * 200
= 150
у= 3х - 1
у = 3х + 2
Answer:
first on the slope is 3 and y intercept is 0,-1
second on the slope is 3 and y intercept 0,2
Step-by-step explanation:
18x - 7y=1
X - 7y=-33
Answer:
18x=7y+1
18x-1=7y
x+33=7y
18x-1=x+33
17x=34
x=2
y=5
Step-by-step explanation:
please help omg ♀️ !!
Answer:
first blank: 50-10=40
second blank: 50-20=30
third blank: 50-25=25
Step-by-step explanation:
hope this helps!
Answer:
Step-by-step explanation:
40 30 25
10 20 25
40 30 25
Solve the system 2x + 3y = 6 2x - 5y = 22
Answer:
In point form (6,-2) and Equation form: x = 6, y= -2
Step-by-step explanation:
-6 + (-7) = adding negative numbers
Answer:
Step-by-step explanation:
Adding 2 negative numbers is like subtracting. You do -6 - 7. Negative 7 is literally - 7. -6 -7 = -13
Answer:
-6 + (-7) = -13
4. If A = (-4, -5) and B = (-1, -10), what is the length of segment AB? Round your answer to the nearest hundredth.
Answer:
5.83095 or √34
Step-by-step explanation:
Find the difference between coordinates:
(x2-x1) = (-1 - -4) = 3
(y2-y1) = (-10 - -5) = -5
Square the results and sum them up:
(3)2 + (-5)2 = 9 + 25 = 34
Now Find the square root and that's your result:
Exact solution: √34 = √34
Approximate solution: 5.831
¿Qué numero es mayor que -5/4?
-3/2
-1
-2
-3/4
Otros: me escriben cuál es
Answer:
10 /8es una fracción equivalente a5/4 15/12 y multiplica el número por un mis mo número y te saldrán infinitoss
Answer:
3/4 es mayor que -5/4 ..........
13
Find the scale factor
Write the equation of the line that passes through the following points.
(3, 1) (1,7)
Answer:
y=-3x+10
Step-by-step explanation:
Slope formula y2-y1/x2-x1
7-1/1-3
simplify
6/-2
simplify
-3
now plug -3 into y=mx+b
y=-3(x)+b
choose any point and plug it into the equation, I am using (3,1)
1=-3(3)+b
simplify
1=-9+b
add 9 to both sides
b=10
plug into slope-intercept form
y=-3x+10
There are 12 pieces of fruit in a bowl and 3 of them are apples. What percentage of the pieces of fruit in the bowl are apples?
Answer:
25%
Step-by-step explanation:
3/12 = 1/4 = 0.25 = 25%
Selena's favorite chocolate chip cookie recipe calls for 111 teaspoon of salt for every {2 \dfrac{1}{4}}2
4
1
2, start fraction, 1, divided by, 4, end fraction cups flour.
In Deepak’s recipe, the relationship between teaspoons of salt (\text{t})(t)left parenthesis, start text, t, end text, right parenthesis and cups of flour (\text{c})(c)left parenthesis, start text, c, end text, right parenthesis is shown on the graph below.
Whose cookies are saltier?
Answer:
Deepak’s
Step-by-step explanation:
I know it is cause I have the same question on khan academy and I got it right.
So you can just trust me
I'll show you
need help with area answer me questions would be nice
Does anyone know the greater common factor of 40
Answer:
20
Step-by-step explanation:
Answer: The greater common factor is 20
Step-by-step explanation:
Hope this helps!
Find the value of X express each answer as a decimal rounded to the nearest tenth.
Answer:
x = 15.6
Step-by-step explanation:
use the pythagorean theorem:
a² + b² = c²
a = 9
b = x
c = 18
(9)² + x² = (18)²
81 + x² = 324 subtract 81 from both sides
x² = 243 take the square root of both sides
x = √243
x = 15.6
8 times the difference of u and 10
Answer: 8(u - 10)
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
10-8=2
8*2=16
Is (1, 10) a solution to this system of inequalities?
y < x + 10
y < 8x + 7
if zaeirr has 10 dogs and lamarr has 2 dogs how many more dogs does zaeirr have than lamarr?
Answer: 8
Step-by-step explanation:
For this problem, we would have to subtract the larger number of dogs by the smaller number of dogs. Zaierr has 10 dogs, and Lamarr has 2 dogs. We would have to subtract the number 10 by the number 2 to get our answer.
10 subtracted by 2 is equal to the number 8.
The answer to our question is 8.