How do I solve a problem like this?
I solved it like: 3x-10+2x+20=45 and got x=9 but I was wrong. Can you help me understand what I did wrong? Thank you!
Answers
Explanation: 3x-10+2x+20=45 combine like terms and then you get 5x+10=45
Then subtract 10 from 45 and then divide you have 5x=35 and then divide 35 by 5 and get 7
Related Questions
whats that song by nicki minaj where she like yells for a second and then starts mumbling nonsense?
Answers
Answer:
probably romans revenge or andaconda
Step-by-step explanation:
The Greens are moving. Their real estate agent located 81 houses listed for sale in their price range. Of those houses listed for sale,
51 had a finished basement.
56 had a three-car garage.
37 had a finished basement and a three-car garage.
Complete parts a) through c).
a) How many had a finished basement but not a three-car garage?
b) How many had a three-car garage but not a finished basement?
c) How many had either a finished basement or a three-car garage?
Answers
Answer:
We know that:
There is a total of 81 houses:
51 had a finished basement.
56 had a three-car garage.
37 had a finished basement and a three-car garage.
a) How many had a finished basement but not a three-car garage?
51 had a finished basement, and 37 have a finished basement and the garage, then:
51 - 37 = 14 hoses have only the basement.
b) How many had a three-car garage but not a finished basement?
Same reasoning as above:
56 - 37 = 19 houses only have the garage.
c) How many had either a finished basement or a three-car garage?
Now we only count the ones that have one finished thing, in this case, we already found the number of houses that have only the garage or only the basement, then the number of houses that either had a finished basement or a finished garage is:
19 + 18 = 37 houses.
i really need help :( can someone please help me T_T
Answers
Answer: $25.41
Convert the percentage into a decimal, and then multiply that decimal by the total price to find the tip. Subtract the tip amount from the total price to find the price before the tip.
15 ÷ 100 = 0.15
15% of 29.90 = 0.15 · 29.90 = 4.48500 ≅ $4.49
$29.90 - $4.49 = $25.41
∴ the price before tip, b, of Mr. Johnson's lunch is $25.41.
please answer. really need help because i dont understand
Answers
What are the coordinates of the vertices of a dilation for triangle ABC at A (-1,-1) B(4,0) and C(2,3). A'B'C'
with scale factor 2.5 centered at the origin?
Answers
Answer:
The coordinates of the image of Δ ABC are:
A' (-2.5, -2.5), B' (10, 0), C' (5, 7.5)
Step-by-step explanation:
Let us revise the rule of dilation
If the point (x, y) dilated by scale factor k centered at the origin, then the image of the point is (k x, k y)
We will use this rule to solve the question
∵ The vertices of triangle ABC are A (-1, -1), B (4, 0), C (2, 3)
∵ The scale factor of a dilation is 2.5
∴ k = 2.5
∵ The center is the origin
→ That means multiply each coordinate of the points by 2.5
∴ A' = (-1 × 2.5, -1 × 2.5)
∴ A' = (-2.5, -2.5)
∴ B' = (4 × 2.5, 0 × 2.5)
∴ B' = (10, 0)
∴ C' = (2 × 2.5, 3 × 2.5)
∴ C' = (5, 7.5)
The coordinates of the image of Δ ABC are:
A' (-2.5, -2.5), B' (10, 0), C' (5, 7.5)
Can you prove the red lines in the diagram are parallel ? Explain your answer
Answers
Answer:
yes
Step-by-step explanation:
the red lines have the same angle from the blue line
The sum of ruqiyo’s age and Mohammed’s age is 117. Five times ruqiyo’s age is 9 more than 3 times mohammed’s age. How old is each person
Answers
Answer:
45 and 72Step-by-step explanation:
Let the ages be r and m
We have:
r + m = 1175r = 9 + 3mSubstitute m in the second equation and solve for r:
m = 117 - r5r = 9 + 3( 117 - r)5r = 9 + 351 - 3r5r + 3r = 3608r = 360r = 360/8r = 45Then m is
m = 117 - 45 = 721.
Write the following number in words: 9,300,695.
Answers
Answer:
nine million, three hundred - thousand, six hundred ninety - five
Step-by-step explanation:
nine million, three hundred - thousand, six hundred ninety - five
9,000,000. 300,000. 600. 95.
Answer:
Step-by-step explanation:
nine million three hundred thousand six hundred and ninety five
What’s question number 2? I have been stuck on this.
Answers
Answer:
i feel like it's B. 3
Step-by-step explanation:
because if you like simplify the problem 3(m+n)-4=5 and then subtract 4 and add 4 to 5 the 5 becomes a 9. then if you divide 9 by 3 the answer would be 3
A group of fitness club members lose a combined total of 28 kg in one week there approximately 2.2 pounds and 1 kg assuming the weight loss happened at a constant rate how many pounds did the group lose each day
Answers
Answer:
8.8 pounds
Step-by-step explanation:
There are 7 days in a week, so the daily loss was ...
(28 kg)/(7 days) = 4 kg/day
In pounds, that is about ...
(4 kg/day)(2.2 lb/kg) = 8.8 lb/day
(10 points) I need help
-(x+1)+7=10
4x+7=2x-9
please show all work
Answers
Answer:
X= - 4
X= - 8
Step-by-step explanation:
-x - 1 +7 =10
-x +6 =10
-x = 10-6
-x = 4
Divide by - 1
X = - 4
4x +7=2x-9
4x-2x =-9 - 7
2x =-16
Divide by 2
X = - 8
It took Kyle and yuan 11 minutes to canoe across lake Wyandot from one dock to the other. What was their average speed in kilometers per hour?
Answers
Answer:
30 min
Step-by-step explanation:
So, how long does it take to kayak a mile? It takes about 30 minutes to kayak 1 mile on flat calm water. Obviously this number will depend on several factors: how much paddling experience you have, wind and wave conditions, and what type of kayak you’re paddling.
Find the distance (-8,-1) and (-1,5)
Answers
Answer:
[tex]\sqrt{85}[/tex] or 9.22
Step-by-step explanation:
13m = 3 someone help me!
Answers
Answer:13m=3
Step 1: Divide both sides by 13.
13m = 3
Answer:
m= (3 /13)
write it as a decimal
hope this helps
:)
Jesus tiene un terreno cuadrado y su hermano uno rectángulalar,El Largo Del Terreno De Su hermano mide 5 metros más que el lado que el terreno que Jesús.mientras que el ancho del terreno de Si hermano mide lo mismo que el ancho del terreno cuadrado. ¿Cual es el area total de los terrenos?
Answers
Answer:
El terreno de Jesus es cuadrado.
El terreno del hermano es rectangular.
Definimos las variables:
Lh = Largo del terreno del hermano.
Ah = Ancho del terreno del hermano
Lj = Largo del terreno de Jesus.
Sabemos que:
Lh = 5m + Lj
Ah = Lj.
Sabemos que el area de un quadrado de lado L es igual a L^2.
Entonces el area del terreno de Jesus es Lj^2.
El area de un rectangulo de largo L y ancho A es igual a A*L.
El area del terreno del hermano de Jesus es:
Lh*Ah = (5m + Lj)*Lj
= 5m*Lj + Lj^2.
Solve the following linear system using the substitution method. Be sure to put your x and y values in the correct spots in the provided coordinate.
24=-3x+y
5y=15
Answers
Answer:
The answer is (7,3)
Step-by-step explanation:
to solve this systems of equations, set both equations equal to y (common variable in both equations).
[tex]24-3x=y\\3=y[/tex]
by looking at both of these, we already know that y is equal to 3.
substitute y for 3 to solve for x.
[tex]24-3x= 3[/tex]
subtract 24 from both sides.
[tex]-3x= -21[/tex]
divide both sides by -3.
[tex]x=7[/tex]
the ordered pair will be written as (7,3)
you can check your answer by substituting 7 and 3 for x and y.
[tex]24= 3(7)+3\\24=21+3\\24=24[/tex]
hope this helps ;)
what is the answer to 10 + 6x = 2(3x – 5)
Answers
Answer:
Step-by-step explanation:
10 + 6x = 6x - 10
10 - 10 = 6x -6x
0 = 0
equation is wrong
5+4+3-8+7-6 show steps
Answers
Answer:
5
Step-by-step explanation:
5 + 4 + 3 − 8 + 7 − 6
= 9 + 3 − 8 + 7 − 6
= 12 − 8 + 7 − 6
= 4 + 7 − 6
= 11 − 6
= 5
1289 x 13 =?
a) 17986
b)15678
c) 16757
d)1389
This is for younger kids!
Answers
The correct answer is c.16757 hope this helps !
please help for 15 points
Answers
Show some different ways you can make 7,502.
Answers
Answer:
7000+500+0+2
Step-by-step explanation:
I hope this helps you!
{x|x is a natural number between 7 and 16}
Answers
Answer:
8,9,10,11,12,13,14,15
Step-by-step explanation:
7 and 16 not included
Can somebody plz help me and answer these questions right thx!!!!!
(WILL MARK BRAINLIEST)
Answers
Answer:
R,I,NITE,RE,integer
Step-by-step explanation:
a)R
B) I
C) N,I,T,E
d) R,E
e) integer
Answer:
a. R
b. I
c. E and E
d. E, R
e. INTEGER
Step-by-step explanation:
Which Sequence would graph as a linear equation? And how do you know?
A. 7, 10, 11, 14
B. 12, 15, 20, 25
C. 1,6, 12, 24
D. 4,9, 14, 19
Answers
Answer:
D is linear.
Step-by-step explanation:
D is linear because you can add the same number over and over again to get to the next one. Linear means repeated addition.
Select all the statements that must be true for any scaled copy Q of Polygon P. Angle measures of Polygon P clockwise from bottom left, in degrees, 90, 125, 35, 250, 80, 135. Group of answer choices The side lengths are all whole numbers. The angle measures are all whole numbers. Q has exactly 1 right angle. If the scale factor between P and Q is LaTeX: \frac15 1 5 1 5 1 5 , then each side length of P is multiplied by LaTeX: \frac15 1 5 1 5 1 5 to get the corresponding side length of Q.
Answers
Answer:
The correct options are;
1) The angle measures are all whole numbers
2) Q has exactly 1 right angle
Step-by-step explanation:
1) When a polygon is scaled to obtain another polygon, whereby the scale factor for the transformation is constant, we have;
The ratio of the sides of the two polygon will be constant, and the two polygons will be similar
Therefore, the interior angles of the polygon and the scaled copy will be equal
Given that the interior angles of the original polygon are all whole numbers, and the interior angles of the scaled copy are congruent to the interior angles of the original polygon, the interior angles of the scaled of the scaled copy are therefore all whole numbers.
2) Similarly, given that the interior angles of the original polygon has exactly 1 right angle, the interior angles of the scaled copy will therefore have exactly 1 right angle.
if a normal dice is rolled 900 times how many times is the number 4 expected
Answers
Answer:
125 times
Step-by-step explanation:
Here, we are required to determine how many times is the number 4 expected if a normal dice is rolled 900 times.
The number of times the number 4 is expected when a normal dice is rolled 900 times is; 900(1/6) = 150times.For a normal dice, there are six faces labelled numbers; 1, 2, 3, 4, 5, 6.
The probability of obtaining the number 4 each time the die is rolled is; 1/6
At the first roll of the normal dice, the probability of obtaining the number 4 is 1/6.At the first roll of the normal dice, the probability of obtaining the number 4 is 1/6.At the second roll of the normal dice, the probability of obtaining the number 4 is 1/6.At the first roll of the normal dice, the probability of obtaining the number 4 is 1/6.At the second roll of the normal dice, the probability of obtaining the number 4 is 1/6.At the third roll of the normal dice, the probability of obtaining the number 4 is 1/6.The probability of obtaining 4 in all 3 rolls is;
(1/6 + 1/6 + 1/6) = 3(1/6).
Ultimately, the number of times the number 4 is expected when a normal dice is rolled 900 times is; 900(1/6) = 150times.
Read more:
https://brainly.com/question/8385930
7(6+d)=49 Solve for d.
A:d=7
B:d=-1
C:d=-7
D:d=1
Answers
Answer: d = 1
Step-by-step explanation:
First distribute the 7 to each term of (6 + d) = 42 + 7d = 49 now subtract 42 from both sides which = 7d = 7. Divide by 7 = 7d/7 = 7/7 = d = 1
The length of a rectangle is 3 inches more than its width. If the perimeter is 42 inches find the demensions of the rectangle
Answers
Answer:
W-18inches L-21inches
Step-by-step explanation:
42-6 = 36/2 = 18
Width is 18 inches
and
Length is 21 inches
x=-3
f (x) = -2x +4
f(x) = ?
Answers
Answer:
10
Step-by-step explanation:
-2X+4
-2(-3)+4
6+4
10
Given the function f(x) = -0.5|2x + 2| + 1, for what
values of x is f(x) = 6?
Answers
Answer:
No values of x can make f(x)=6
Step-by-step explanation:
Equation with Absolute Value
The absolute value of a number is always positive. That condition must be met when solving equations. Any condition that goes against the rule, must be discarded and not part of the solution.
The function provided in the question is:
[tex]f(x) = -0.5|2x + 2| + 1[/tex]
We need to find the value(s) of x that make:
f(x)=6
It needs to solve the equation:
[tex]-0.5|2x + 2| + 1=6[/tex]
Subtracting 1:
[tex]-0.5|2x + 2| =6-1=5[/tex]
Dividing by -0.5:
[tex]|2x + 2| =5/(-0.5)=-10[/tex]
We reach to this equation to solve:
[tex]|2x + 2| =-10[/tex]
As stated above, the absolute value is always positive, and the equation forces the absolute value to be negative. There is no possible value of x that makes the absolute value negative, thus:
No values of x can make f(x)=6
Answer:
No Solution
Step-by-step explanation:
EDGEN 2021