Answer:
x = 5
Step-by-step explanation:
-7(-1 + 3x) - 7x = -133
According to PEMDAS, we want to look at the parentheses first.
In this case, the expression within the parentheses is already fully simplified. There are no exponents, so we will move on to multiplication. Distribute the -7 across the parentheses.
7 - 21x - 7x = -133
Now combine the variables.
-21x - 7x + 7 = -133
-28x + 7 = -133
Now combine the constants.
-28x = -140
isolate x by dividing both sides by -28.
x = 5
Check this by plugging this value back into the original equation.
-7(-1 + 3(5)) - 7(5) = -133
Follow PEMDAS (the underlined values are the components we handled)
-7(-1 + 15) - 7(5) = -133
-7(14) - 7(5) = -133
-98 - 35) = -133
-133 = - 133
Your answer is correct.
Hope this helps!
Answer:
x = 5
Step-by-step explanation:
To solve an equation, isolate the variable.
1) Expand the left side of the equation. Distribute the -7 to the terms inside the parentheses.
[tex]-7(-1+3x)-7x = -133\\7 -21x-7x = -133[/tex]
2) Then, combine like terms. Combine -21x and -7x to make a single x-term and subtract both sides by -7.
[tex]7-28x=-133\\-28x=-140[/tex]
3) Then, divide both sides by -28 to find the answer.
[tex]-28x = -140\\x = 5[/tex]
To simplify expressions, we often ___ like terms.
Answer: combine
Step-by-step explanation:
When you combine like terms, it shortens or simplified the equation
Example: 2x-5+15
Combine actual numbers -5 and 15.
2x+10
help me please i need an answer ASAP
Answer:
n = 14
Step-by-step explanation:
Width of the given right angles triangle = (n + 6) cm
Since, height of this triangle is 10 cm less than the width.
Height = (n + 6) - 10
= (n - 4) cm
Area of a right angles triangle = [tex]\frac{1}{2}(\text{Base})(\text{Height})[/tex]
= [tex]\frac{1}{2}(n+6)(n-4)[/tex]
100 = [tex]\frac{1}{2}(n+6)(n -4)[/tex]
200 = n(n - 4) + 6(n -4)
200 = n² - 4n + 6n - 24
200 = n² + 2n - 24
n² + 2n - 224 = 0
n² + 16n - 14n - 224 = 0
n(n + 16) - 14(n + 16) = 0
(n + 16)(n - 14) = 0
n = -16, 14
Since n = -16 is an extraneous solution, so the answer is n = 14.
Please help me due in an hour will mark brainliest!!!
Answer:
B. 16 miles
Step-by-step explanation:
[tex] \: d = 3.2 \: m... (given) \\ \\ plug \: m \: = 5 \\ \\ d = 3.2 \times 5 \\ \\ d = 16.0 \\ \\ d = 16 \: miles[/tex]
sebuah topi berbentuk kerucut dengan panjang diameter 18 cm dan tinggi topi tersebut 20cm berapakah volume nya
Answer:
The area of the cone is "1,695.6 cm³".
Step-by-step explanation:
The given values are:
Diameter of cone,
d = 18 cm
then,
Radius,
r = [tex]\frac{d}{2}[/tex]
= [tex]\frac{18}{2}[/tex]
= [tex]9 \ cm[/tex]
Height,
h = 20 cm
As we know,
⇒ Area of a cone = [tex]\frac{1}{3} \pi r^2 h[/tex]
On substituting the given values in the above formula, we get
⇒ = [tex]\frac{1}{3}\times 3.14\times (9)^2\times 20[/tex]
⇒ = [tex]\frac{1}{3}\times 3.14\times 81\times 20[/tex]
⇒ = [tex]3.14\times 27\times 20[/tex]
⇒ = [tex]1,695.6 \ cm^3[/tex]
please help i have no clue how to do this please solve and explain
The answer is c. 9z^7/y^6
Is y=2x+7 a function?
Yes or no
Answer:
YES
Step-by-step explanation:
It is because the domain doesn't repeat.
There are no multiple outcomes for one domain.
wich one those not match?
Answer:
D
Step-by-step explanation:
Answer: C
Step-by-step explanation:
it is 10% shades
Construct a scatter plot of the following given information showing the amount of time students spend doing homework per week and their overall GPA in school. Be sure to label the graph and answer any other questions.
Answer:
Please look at the graph attached to find the x axis and y axis...
a) it has a postive association (becuase of the increment of the trendline)
b) it is linear becuase it is increased from the 0 value and up)
c) there is a outlier in the graph as you can see about four hours the GPA increased by 3.2 then back to 2.5
Hope this helps!!!
A shopkeeper wants to sell pulses at a common rate.So he mixed three quality of pulses weighing 34.650 kg ,68.275 kg and 90.350 kg respectively . Find the total quality of pulse he has. What can you say about the shopkeeper?
Answer:
Q = 193.27 kg
Step-by-step explanation:
A shopkeeper mixed three quality of pulses weighing 34.650 kg ,68.275 kg and 90.350 kg respectively.
We need to find the total quality of pulse he has. It means, total quality of pulse he has is :
Q = 34.650 + 68.275 +90.350
= 193.27 kg
Hence, he has 193.27 kg pulse.
The state volleyball association invited 64 teams to compete in a tournament.after each round , half The teams were eliminated.which equation represents the number of teams,t, that remained in the tournament after r rounds
A. t= 64(0.5)^r
B. t=64(r)^0.5
C. t=64(1.5$^r
D. t=64(-0.5)^r
Answer:
A
Step-by-step explanation:
You take the 64 teams, split it in half, and then the exponent is r
An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
The equation that represents the number of teams t that remained in the tournament after r rounds is t = 64 x [tex](1/2)^{r}[/tex]
Option A is the correct answer.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example: 3x + 3 = 4 is an equation.
We have,
Number of teams = 64
The number of teams eliminated after each round = Half the team.
The equation represents the number of teams t that remained in the tournament after r rounds.
t = 64 x [tex](1/2)^{r}[/tex] ____(1)
Put r = 1, we must get 32 teams.
t = 64 x 1/2 = 32
Put r = 2 we must get 16 teams.
t = 64 x (1/2)² = 64 x 1/4 = 16
We see that (1) is the correct equation to represent the number of teams t that remained in the tournament after r rounds.
Thus,
The equation that represents the number of teams t that remained in the tournament after r rounds is t = 64 x [tex](1/2)^{r}[/tex]
Option A is the correct answer.
Learn more about equations here:
https://brainly.com/question/17194269
#SPJ5
Evaluate the expression.
(−1)6 *the 6 is an exponent *
The value of the expression is ?
Answer:
1
Step-by-step explanation:
(-1)(-1)= 1
1 x (-1) = -1
-1 x (-1)= 1
1 x (-1)= -1
-1 x (-1)= 1
12miles to 30miles in ratio
Answer:
12:30
4:10 (simplified)
Step-by-step explanation:
answer please i need help
Answer:
oh my god
Step-by-step explanation:
why is your image blockedddd
4. The total of 5 rows of 6 chairs.
Answer:
30
Step-by-step explanation:
please mark brainliest!!!
HELPP IVE BEEN STUCK ON THIS ONEE I WILL GIVE YOU BRAINLIEST MK SJJSJ.
Answer:
We know the diameter is 3 inches. We need the radius to find the area. By dividing the dimater by 2, we get the radius of 1.5 inches. The answer is 7 inches squared.
Brainliest would be great.
Salma will run less than 28 miles this week. So far, she has run 19 miles. What are the possible numbers of additional miles she will run?
Answer:
Salma can run 1 to 8 more miles to run less than 28 miles in total
Step-by-step explanation:
28-19= 9 but she is running LESS than 28 miles so subtract 1 from that 9
Chad sells custom T-shirts with five of his friends. If the earnings are divided evenly, how much must the business make in order for each person to earn $45? What is the variable for this problem?
A. expenditures
B. profit ratio
C. t-shirts
D. friends
E. total earnings
Answer:
I feel like the answer is B because they each want 45$ and they want it to be equal.
Step-by-step explanation:
I had the test
Find the equation of the line that contains the points whose coordinates are (−1, 0) ( − 1 , 0 ) and has slope 1/4
Answer:
[tex]\displaystyle y=\frac{1}{4}x+\frac{1}{4}[/tex]
Step-by-step explanation:
We want to find the equation of the line that passes through the point (-1, 0) and have the slope 1/4.
We can use the point-slope form given by:
[tex]\displaystyle y-y_1=m(x-x_1)[/tex]
We will substitute (-1, 0) for (x₁, y₁) and 1/4 for the slope m. Therefore:
[tex]\displaystyle y-(0)=\frac{1}{4}(x-(-1))[/tex]
Simplify:
[tex]\displaystyle y=\frac{1}{4}(x+1)[/tex]
Distribute. Thus, our equation is:
[tex]\displaystyle y=\frac{1}{4}x+\frac{1}{4}[/tex]
Andre wants to save $40 to buy a gift for his dad. Andre’s neighbor will pay him weekly to mow the lawn, but Andre always gives a $2 donation to the food bank in weeks when he earns money. Andre calculates that it will take him 5 weeks to earn the money for his dad’s gift.
(I could answer more confidently if I had more context to the question)
I believe the answer to the question is Andre's neighbor pays Andre 10 dollars a week to mow his lawn.
Hope this helps, if not, comment below please!!
:L
During each week of piano lessons, Justin learns to play 2 new pieces. In all, how many weeks of piano lessons will Justin need before he will be able to play a total of 46 pieces?
Answer:
23 weeks
Step-by-step explanation:
For 1 week he can learn 2 new pieces. He wants to pay 46 pieces. So we would make the following equation:
[tex]2x=46[/tex] where x is equal to the number of weeks
We can then solve for x by dividing 46 by 2.
[tex]\frac{46}{2} =23[/tex]
So in order for Justin to learn 46 pieces, it would take 23 weeks.
lines
Points A and B are on the horizontal line on either side of the vertical line. Points E and F are on the vertical line on either side of the horizontal line. Another line runs diagonally through the center up to the left and down to the right. Points C and D are on either side of the horizontal line. Measurements for the various angles that are formed are labeled. Angle CA is 1. Angle CE is 2. Angle EB is a right angle and is labeled 3. Angle BD is 4. Angle DF is 5. Angle FA is 6.
Use the figure to answer the question.
Name a pair of vertical angles.
A. Image of an angle symbol2 and Image of an angle symbol5
B. Image of an angle symbol2 and Image of an angle symbol6
C. Image of an angle symbol3 and Image of an angle symbol4
D. Image of an angle symbol5 and Image of an angle symbol6
Answer: it is b
Step-by-step explanation:
i took the test boys
find the value of given expression
=》
[tex] \sqrt{26 + 10} [/tex]
Answer:
answer is 6
Step-by-step explanation:
.............
Evaluate the function g(x) = –3x^2 + 8x – 1 for the given values of x
What is g (-2) ?
show ur work
Answer:
g(-2) = 3
x = -2.535 and -0.131
Step-by-step explanation:
Can anyone help me with this question please
Do not answer if you do not know.
I’ll mark as brainliest.
The sum of two numbers is 115. Their difference is 21. Find numbers. I need to show my answer
Answer:
The answer is 73 and 42
Step-by-step explanation:
1. Subtracting 21 from 115 which gives you 94, but that wouldn't be the answer because its asking for two numbers with a difference.
2. From you subtract 21 from 94 which is 73, next subract 73 from 115 which gives you 42.
3. 73 + 42 is 115
i have 100 apples i eat 52.5,how many i have
Answer:
47.5
Step-by-step explanation:
two times a number plus three times a number equals 13. The sum of two numbers is 7. what are the numbers? write the numbers for least to greatest.
Answer:
4
Step-by-step explanation:
[tex]2+ 3 = 5 \\13-5= 8\\8 divided by 2=4 \\x=4[/tex]
and can you write it as a simplified fraction
Your family's car can hold 20 gallons of gas. If you use .5 gallons of gas a day, how many gallons do you use in 10 days
PLS HELP! WILL GIVE BRAINLIEST AND 20 POINTS TY!
Answer:
10/11
Step-by-step explanation:
100÷10=10 121÷11=11