Answers
Answer:
a = 1
Step-by-step explanation:
Adding 3 as x into the equation will give you 2(3) + y = 7. 3 x 2 = 6, so now the equation is 6 + y = 7.
Now subtract 6 from both sides of the equation to get y by itself, so you'll have y = 1.
CHECK:
2(3) + 1 = 7
6 + 1 = 7
7 = 7 ⇆
Step-by-step explanation:
2x+y=7
2×3+y=7
6+y=7
y=7-6
y=1
Related Questions
Greg gives pepper a 12 second head start in a 2km race. If Greg runs at 5km/minute and pepper runs at 3km/minute. Who will win the race and buy how many second
I’d like a formula that i can use to these questions thanks :)
Answers
Answer:
greg, 4 seconds
Step-by-step explanation:
find how long it takes each person to run 2km first.
distance/speed:
pepper: 2/3 *60(seconds)=40 secondsGreg: 2/5 *60= 24 seconds40-12=28 seconds, pepper will take 28 seconds to finish the race from the time greg starts. greg will win by 4 seconds
100 POINTS + BRAINLIST IF RIGHT. GEOMETRY
In problems 13-15 is the bisector of AC
Please help 13-15 I’m struggling so hard :(
Answers
Hello! I'm happy to help!
Question 13: First, we will need to find the value of x. We know that AB and BC are equal.
So, we can subtract x from both sides.
2x-8
-x
x-8
So, we get AB as x-8
x+17
-x
17
and BC as 17. We know that these are equal, so we need to find which x value will make them that way. In this case, x=25 because 25-8=17. We can now add back the x we removed earlier.
17+25=42
Therefore, both AB and BC have a value of 42. and AC will be the combined total.
42+42=84
So, for question 13, x=25, AB=42, BC=42, and AC=84.
Question 14: This question is similar, but we have an expression for AB and AC, instead of AB and BC. We still know that AB=BC, so we can also say that BC=x+6 also. To find x, we need to find a second expression that is equal to AC. We can ad AB and BC together to get that. (x+6)+(x+6)=2x+12. This expression is equal to the AC expression, so we can compare them to find x.
2x+12=3x-31
We need to single out the x on one side, by changing things in the same way on both sides.
2x+12=3x-31
-2x -2x
12=x-31
+31 +31
43=x
Now that we know our x value, we need to plug it in!
43+6=49
We now know that both AB and BC have a value of 49. Let's plug in the value for AC.
(43·3)-31
129-31
98
After plugging in the values, we know that AC is equal to 98. You could have also added AB and BC together, giving you 98 also.
To Summarize Question 14: x=43, AB=49, BC=49, AC=98.
Question 15: This one is very similar to the last, with a little more complexity to the expressions. First, let's simplify the expressions on AB and AC.
AB=3(3x-1) AB=9x-3
AC=5(2x+2) AC=10x+10
Now that we have the simplified expressions, let's solve. We need to find an equivalent expression for AC. We know that AB and BC are equivalent, and also add up to AC. We can copy the expression from AB to BC, and then add them
(9x-3)+(9x-3)=18x-6=AC
We now compare the two expressions in an equation to find x.
10x+10=18x-6
Again, we have to single out x on one side.
10x-10=18x-6
-10x -10x
10=8x-6
+6 +6
16=8x
This time, we need to divide both sides to single out x.
[tex]\frac{16}{8}[/tex]=[tex]\frac{8x}{8}[/tex]
2=x
Now that we have x, we need to plug it in to finish solving.
(9·2)-3
18-3
15
AB=15 BC=15
From here, you can do one of two things, add AB and BC together (easy), or plug in x for AC.
15+15=30 (10·2)+10
AC=30 20+10=30
AC=30
To Summarize Question 15: x=2, AB=15, BC=15, AC=30.
I'm always happy to help, keep learning! :D
A) give a verbal description of the subset of real numbers represented by the inequality or the interval, B) sketch the subset on the rest of real number line, and C) state whether the interval is bounded or unbounded
Answers
An inequality is an expression which makes comparison between unequal expressions i.e. both sides of the inequality sign are not equal.
The verbal description of [tex]x > 5[/tex] is the set of all real numbers greater than 5 The interval is bounded (right bounded to be precise)The inequality is given as:
[tex]x > 5[/tex]
[tex]x > 5[/tex] means x greater than 5
So, the verbal description is as follows:
The set of all real numbers greater than 5
To sketch [tex]x > 5[/tex] on a number line, we consider the following:
> means greater than; so, the arrow on the number line must point to the right[tex]> 5[/tex] implies that the arrow must start on 5> also implies that the circle on 5 must be an open circleSee attachment for the sketch
To determine if the interval is bounded or not, we do the following.
[tex]x > 5[/tex] means that the x starts at a value greater than 5, and the value of x has no end.
This is represented as: [tex](5,\infty)[/tex]
Notice that 5 is at the right, while [tex]\infty[/tex] is at the left.
This means that the interval is bounded (right bounded to be precise)
Read more about inequalities at:
https://brainly.com/question/17194874
what is 6x - 4x please help
Answers
Answer:
2x
Step-by-step explanation:
6x-4x
= x(6-4)
= 2x
(6-4)x => 2x
Kareem runs 8 miles in 84 minutes. At the same rate, how many minutes would he take to run 6 miles?
Answers
He would take 63minutes to run 6 miles
Answer:
TIME TAKEN =63minutes or 1 h 3 min.
Autumn bought a square frame for her desk that has an area of 361 square units.
What is the perimeter of the frame?
Answers
by Find the value of 5% of 300
Answers
Answer:
15
Step-by-step explanation:
5/100*300
100 can be cut for 100 and 300
so 5/1*3
ans 15
Answer:
Percentage Calculator: What is 5 percent of 300? = 15.
Hope it helps you.Mike sold H hats. Nate sold three times as many hats as Mike. Write an expression for the number of hats Nate sold.
Answers
answer:
h3
Step-by-step explanation:
H raise to power 3
10-3•2/1+1 what is the answer???
Answers
The answer can be either depending on it you have to reduce
Answer:
5
Step-by-step explanation:
PEMDAS ( or for whatever one you do... )
You read it from left to right. So, whatever comes first you do then you continue.
Multiplication came BEFORE division in this case.
3 x 2 = 6
Then Division.
You had gotten 6 FROM 3 x 2. Divide that TOTAL with 1.
6/1 = 6
[ Then subtraction is infront of addition. It may seem confusing but regardless how the letters are formatted in "PEMDAS" you ALWAYS read from left to right. "PEMDAS" has Addition infront of Subtraction but in this case, subtraction goes first because it's infront of the addition. ]
Then you subtract.
You had gotten 6 FROM 3x2/1
Subtract that TOTAL with 10. 10 - 6
What is 10 - 6? 4 because 10 is LARGER than 6
Then you add.
You got the TOTAL of 4 FROM 10-3x2/1.
Add that TOTAL with 1.
4 + 1 = 5.
The answer should be 5 but correct me If I'm wrong.
7 (x + 2) = ?x + ?
someone please help me
Answers
The common factor of 24aᴧ3bᴧ4, 36aᴧ4cᴧ4 and 48aᴧ3bᴧ2c is: pls don't spam sisters and brothers
(≧▽≦)( ◜‿◝ )♡
Answers
Answer:
The common factor is 12a³
Step-by-step explanation:
[tex] {24a}^{3} {b}^{4} , \: 36 {a}^{4} {c}^{4} , \: 48 {a}^{3} {b}^{2} c[/tex]
each term got a factor:
[tex] = 12 {a}^{3} [/tex]
Which one describes the algebraic expression for the phrase, "four times the quantity of a number increased by 8 is
equal to 10 more than the number"?
O 4n + 8 = n - 10
O 4(n + 8) = n + 10
O 8n + 4 = 10n
O 8(n + 10) = n + 10
Answers
Answer:
4(n + 8) = n + 10[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]
pleeeeeeeeeeaaaaaassssseeee help
Answers
Answer:
with wut
Step-by-step explanation:
Here a graph I made, any numbers that have LCF or a GCF of 140 let me know
Answers
4 & 35
5 & 28
7 & 20
(That’s all)
7) In an old episode of the TV program McGyver, a planeload of gold was being transported from the SovietUnion to the United States during WWU. The place crashed in the Arctic region. To prevent the "badguys" from getting the gold, the pilot and copilot transferred the gold into a cave by stacking it on a door
of the crashed plane and dragging the "sled" into the cave. You were led to believe in the episode that
they accomplished the move in one trip. The gold was stacked neatly in the shape of a cube, measuring
about 1 meter on a side. Calculate the weight, in tons, of one cubic meter of gold. The density of gold is
19.4 g/cc. Would it have been possible for the two pilots to accomplish this feat? Would a plane of WWII
vintage be able to carry this much gold? (cc = cubic centimeter, 1cm = 1mL)
Answers
Here we need to remember that:
density = mass/volume
Only by using this equation, we will find that the mass of gold is 19,400 kg
In this case, we know that the gold is in the shape of a cube with side length of one meter.
Remember that for a cube of side length L, the volume is:
V = L^3
Then in this case, the volume of the cube of gold will be:
V = (1m)^3 = 1m^3
And we know that the density of the gold is:
density = 19.4 g/cc
cc = cm^3
density = 19.4 g/cm^3
Notice that we have different units of volume, so we would want to write the volume in cm^3
We know that:
1m^3 = (1×10^6)cm^3
Then the volume of the cube of gold is just:
V = (1×10^6)cm^3 = 1,000,000 cm^3
Now let's return to the density equation:
density = mass/volume
Solving for the mass, we get:
density×volume = mass
Now we can replace the two things in the left side:
(19.4 g/cm^3)×(1,000,000 cm^3) = mass = 19,400,000 g
Now remember that:
1000k = 1kg
Then we can rewrite:
mass = 19,400,000 g = (19,400,000/1000)kg = 19,400 kg
So the cube of gold has a mass of 19,400 kg, there is no way that two persons could carry this much gold into a cave.
if you want to learn more, you can read:
https://brainly.com/question/18320053
A truck can be rented from Company A for $120 a day plus $0.20 per mile. Company B charges $60 a day plus $0.40 per mile to rent the same truck. Find the number of miles in a day at which the rentals cost for company A and company B are the same.
please help..
Answers
Answer:
12 miles in a day.
Step-by-step explanation:
Variable x = number of miles
Company A: 120 + 0.20x
Company B: 60 + 0.40x
Set up an equation:
120 + 0.20x = 60 + 0.40x
60 + 0.20x = 0.40x
60 = 0.20x
12 = x
(PLEASE SOLVE ASAP EXPLAIN ALSO)
Answers
Answer:
3.81
Step-by-step explanation:
- + -
- + -
- + -
If you were to go all ways on this chart↑ the rules would always be the same.
A negative plus a negative is a negative.
A negative plus a positive is a negative.
A positive plus a postitive is a positive.
The complete factorization of 12x² + 4x - 8 is:
(A) (3x + 1)(4x – 8)
(B) (4x + 4)(3x + 2)
(C) 4(3x² + x - 2)
(D) 4(3x − 2)(x + 1)
(E) 4(3x + 2)(x - 1)
Answers
Answer:
D is the correct answer.
Can someone tell me the asnwer to this ASAP?
Answers
Answer:
[tex]2\sqrt{2} \\2[/tex]
Step-by-step explanation:
[tex]\sqrt{8} = \sqrt{4*2} = \sqrt{4} * \sqrt{2} = 2*\sqrt{2} = 2\sqrt{2} \\\\\sqrt[3]{8} = \sqrt{2*2*2} = 2[/tex]
Answer:
I noticed that [tex]\sqrt{8\\}[/tex] does not have 3 on it like the second one. And i wonder that the answers would be different from each other
[tex]2\sqrt{2}[/tex]
2
( x+y+z )² + 2( x+y+z ) +1
Answers
Answer:
[tex](x+y+z+1 {)}^{2} [/tex]
Step-by-step explanation:
[tex](x+y+z {)}^{2} +2(x+y+z)+1[/tex]
[tex](x+y+z+1 {)}^{2} [/tex]
Hope it is helpful....Here is your answer hope this helps you.
x square add 7x subtract 30 factorize
Answers
＝x²＋10x－3x－30
＝x(x＋10)－3(x＋10)
＝(x＋10)(x－3)
Hope my answer helped u :)
In hours 3 3/8, John reads 4 1/2 chapters.
What is the unit rate in chapters per hour?
Write your answer as a fraction or a mixed number in simplest form.
Answers
Answer:
1 1/3 chapters per hour
Step-by-step explanation:
eplaination is in the picture
17+5 plz show communitive property
Answers
Answer:
17+5=17+5
No matter what order you put them it will always be the same
Answer:
17+5=5+17
Step-by-step explanation:
17+5=22
5+17=22
Solve the equation cos7θ = sin5θ where 0<θ<90°
Answers
Answer:
You can get approximate values by drawing a graph,
Step-by-step explanation:
Which numbers can go into 216 with no remainder? Select all that apply. 6 5 9 7
Answers
Answer:
They are 6 and 9
Step-by-step explanation:
Answer:
Among the given numbers, 6 and 9 will go to 216 without leaving any remainder.
Hope it helps you
Plzzzz Help me 50 points!!!!
Answers
Second to last questions Pls help Thx!. :)
Answers
Answer: this is realy unclear but ill try my best man 1st,bot C . 2nd,bot A . 3rd,bot D, last or 4th, bot c
Step-by-step explanation:
the highest number is 38 clicks in 4.5 seconds so ill try to multiply or do more math to get the answer 0.5 x 9 adds up to 4.5 so ill do 4 x 9 is 36
2x2.25 gets you 4.5 seconds so 2.25 x 15 = 33.75 and bot b i dont even wanna do that math so 1st goes to bot c 2nd goes to bot A 3rd goes to bot d and last goes to bot b
c) A bus completes its journey in 14 hours with an average speed of 40 km per hour. How long does the bus take to complete the journey if its average speed is increased to 56 km per hour?
Answers
Explanation:
Compute the distance for the original speed and time
distance = rate*time
distance = (40 kph)*(14 hrs)
distance = 560 km
If we increase the rate or speed to 56 kph, then,
distance = rate*time
560 km = (56 kph)*x
560 = 56x
56x = 560
x = 560/56
x = 10
The bus will travel for 10 hours if its speed is increased to 56 km per hour.
Answer:
A bus takes 4.5 hours to complete a complete a journey at a speed of 40km/hr
So, in this case, We will find the distance first because the distance is constant.
distance-speed*time
distance=40*4.5
distance=180km
distance=180km
Now, we find the time to cover the distance at the speed of 45km/hr
time distance/speed
time=180/45
time=4hrs
Therefore, the answer is 4hrs
Hope it helps you.Have a nice day!!See your levels
A rectangular vegetable patch is 7 meters long and 5 meters wide. What is its area?
Answers
7*5=35 its simple though
Identify as a monomial, binomial, or trinomial. x^3Y^2Z
Answers
Answer: Monomial
Step-by-step explanation:
2ax/3y is a monomial in three variables a, x and y.
PJ, A term is defined as a number, variable, or some combination of numbers and/or variables being multiplied together. Even though 2x has two parts (2 and x), since they are being multiplied together, 2x is considered a single term (a monomial expression).Mar 18, 2014
Answer:
monomial
Step-by-step explanation:
because it has only 1 term