Answer:
A=21
Step-by-step explanation:
a/7 + a/3 = 10
3a/21+7a/21=210/21
3a+7a=210
10a=210
a=21
what is the image of (8,7) after a reflection over the line y=-x?
Answer:
(-7,-8)
Step-by-step explanation:
The original point is (8,7)
To reflect it, just switch their places and change their signs.
So, (-7,-8)
Evaluate. 8^4 · 8^–6
Answer:
0.015625
Step-by-step explanation:
8⁴×8⁻⁶
= 8⁴⁺⁻⁶ = 8⁻² = 0.015625
Answer:
x/64 hope this helps
Step-by-step explanation:
how many solutions does 4x+1=3x+2
one solution
no solution
infinitely many solutions
Answer:
one solution
Step-by-step explanation:
If you simplify the equation, it becomes 1x+1=2. Then you subtract the 1 from 2 and get 1x=1. Therefore, x=1 which is ONE SOLUTION.
ASAP,What are the possible solutions to a system of equations and What does it mean for a system of equations to have one Solution, no solution, infinite many solutions?
(its an essay so plz explain it to me)
Answer:
ok for the first one the lines only cross once 2. lines dont cross 3. its just one line
Step-by-step explanation:
im pretty sure thats right
PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!
PLSSSS SHOWWW THE WORKKK!!!!
Answer:
there is the answer let me now if i was right
Step-by-step explanation:
Which function is f(5) for the function -2x^2+2x-3
A: -107
B: -63
C: -43
D: -37
Answer:
C
Step-by-step explanation:
-2x^2 + 2x -3
-2(5)^2=
-50
2(5)
= 10
-50+10-3
is -43 so C
Ashley is making trail mix.The ratio of peanuts to raisins in one portion is 5:9. Create a ratio table to find out how many peanuts and raisins you will need if you make 7 portions and 12 portions
The number of peanuts and raisins for 7 portions is 35 and 63 respectively.
What is the ratio?The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
Given that, the ratio of peanuts to raisins in one portion is 5:9.
Number of peanuts and raisins you will need if you make 7 portions and 12 portions.
Now, 5×7 : 9×7
35:63
Here, 5×12 : 9×12
60 : 108
Therefore, the number of peanuts and raisins for 7 portions is 35 and 63 respectively.
To learn more about the ratio visit:
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Louis makes a model of a plane.
The wingspan of the model is 50 centimetres.
The wingspan of the real plane is 80 metres.
Work out the scale of the model.
Give your answer in the form 1:n
Answer:
1 : 1.6
For every centimeter on the model, it is 11.6 centimeters on the real plane
Step-by-step explanation:
The required value of the scale of the model in the form of 1:160.
Given that,
The wingspan of the model is 50 centimeter,
The wingspan of the real plane is 80 meter.
We have to determine,
The scale of the model and give your answer in the form 1 : n.
According to the question,
The wingspan of the model = 50 centimeter [tex]= \frac{50}{100} = 0.5m[/tex]
The wingspan of the real plane is 80 meter.
The ratio of the scale = 1:n
Therefore,
The equation of proportion is,
[tex]\frac{wingspan \ of \ the \ model}{wingspan\ of \ the \ palne} = \frac{1}{n}[/tex]
Putting all the values in the equation,
[tex]\frac{0.5}{80} = \frac{1}{n} \\\\n = \frac{1 \times 80}{0.5} \\\\n = 160[/tex]
The value of n = 160.
Hence, The required value of the scale of the model in the form of 1:160.
For the more information about Scale model click the link given below.
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your portfolio value has grown from 2500 to 3800 what is the percent of the growth rate
Answer:
52 percent.
Where: 2500 is the old value and 3800 is the new value. In this case we have a positive change (increase) of 52 percent because the new value is greater than the old value.
Answer:
52%
Step-by-step explanation:
An inequality is shown below.
-5x < 60
What is the solution?
Oxs 65
O x>-12
O x 65
Oxs-12
o
Answer:
-5x<60 divide both side by -5
x>-12
Q1 - Understanding simultaneous equations
Solve these simultaneous equations.
4 pillows and 5 quilts cost $57
9 pillows and 5 quilts cost $72
Find the cost of one of each.
4p + 59 = 57
9p + 59 = 72
P =
and q =
3 apple pies and 5 banoffee cost $28
3 apple pies and 7 banoffee cost $38
Find the cost of one of each.
3a + 5b = 28
3a + 2b = 38
a =
C
and b =
6 mugs and 3 plates cost $21
3 mugs and 3 plates cost $15
Write down and solve simultaneous
equations (m is the cost of a mug and
p is the cost of a plate, in $).
cal
m =
and p =
[
0
Five sisters bought a present for their grandfather that cost each sister $10.80. They received a 10% discount. How much was the original price of the gift?
Answer:
$540
Step-by-step explanation:
Multiply 10.80 by the 5 sisters then divide your answer by 10%
what is 43/10 as a mixed number
Answer:
4 3/10
Step-by-step explanation:
Answer:
4 3/10
Step-by-step explanation:
Gail paid $118.65 for a varsity jacket. The price includes a 5% sales tax. How much was the jacket before the tax? $124.65
$113.00
$117.00
$112.72
Answer:
112.72
explaination:
Answer:
C the answer is C
Step-by-step explanation:
Pls tell me the answer only.
Find two numbers that have a sum of 4 and a product of -5
Answer:
-1 and 5
Step-by-step explanation:
Where is the circumcenter of this obtuse triangle located?
O inside the triangle
O outside the triangle
O at a vertex of the triangle
on a side of the triangle
The circumcenter of this obtuse triangle located is outside the triangle. Then the correct option is B.
What is the triangle?The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180 °.
If all the angles of the triangle are acute angles. Then the location of the circumcenter will lie inside the triangle.
If one of the angles of the triangle is a right angle. Then the location of the circumcenter will lie on the hypotenuse of the right-angle triangle.
If one of the angles of the triangle is an obtuse angle. Then the location of the circumcenter will lie outside the triangle.
The circumcenter of this obtuse triangle located is outside the triangle. Then the correct option is B.
More about the triangle link is given below.
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I need some help here please
Answer:
d. raíz de 44
[tex] \sqrt{48 \\ } [/tex]
2.9 divided by 97.526
show work please <3.
Answer: 0.029736
Step-by-step explanation: sorry i know it not the best but i couldnt do it another way anyways hope this helps
2 9 7 3 5 .
9 7 5 2 6 | 2 9 0 0 .
1 9 5 0 . 5 2
9 4 9 . 4 8 0
8 7 7 . 7 3 4
7 1 . 7 4 6 0
6 8 . 2 6 8 2
3 . 4 7 7 8 0
2 . 9 2 5 7 8
5 5 2 0 2 0
4 8 7 6 3 0
6 4 3 9 0
HELPP PLEASE NOW!!!!!!!!
Ten players on Michelle's soccer team were asked if they will attend a soccer camp this summer and 7 said yes. There are 20 players on the team in all.
Write a pair of equivalent fractions that could be used to determine the number of players that will attend camp this summer.
How many players on Michelle's soccer team will attend a soccer camp this summer?
Please help me. Is that right?
Answer:
Yes
Step-by-step explanation:
Answer:
Angle 5
Step-by-step explanation:
can someone plz help me
Answer:
I believe D is the answer
Step-by-step explanation:
how I find the slope it by looking at the y-axis and what hits directly on that line. you can see that 3 hits directly on that line so the b in y=mx+b is three which is your starting point. then you follow the line and see where it hits directly on a point. then count the blocks. remember that it's rise over run so that's y over x. so you go down five and over one. since you go down five it's negative. the negative is only added onto the five not the one. and since it's five over one, you don't need to put the over one, it's just automatically there. hope this helps! good luck!
Im not smart, can someone pls help me?
Answer:
13- No because the size of the triangle can be different, meaning bigger side length
in 14 he is forgetting the lines at the angles. The little circular ones that say the angles are congruent.
Step-by-step explanation:
PLEASE HELP , IT'S DUE TOMORROW !!
Write a situation about today's sales for the following systems of equations and then determine how much of each menu item you sold e + f = 48 and e = 3f
Answer:
3x48+48 = 192
3x48= 144
144+48= 192
There has been sold 12 items of f and 36 items of e in the system.
What is a system of equations?A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
We are Given the system of equation:
(1) e + f = 48
(2) e = 3f
Then Substituting e=3f into e + f=48:
3f + f = 48
Adding similar terms:
4f = 48
Dividing both sides by 4:
f = 48/4
Simplifying:
f = 12
Replacing;
f=12 in e + f =48
e + 12 = 48
Now Subtracting -12 to both sides:
e = 48 - 12
e = 36
Thus There has been sold 12 items of f and 36 items of e.
Learn more about equations here;
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The graph below shows the solution to which system of inequalities
Answer:
C. y </ 3/4x +10 and y<l -1/2x - 3
Step-by-step explanation:
Basically first do process of elimination with your focus on one equation
for example :: ( >l is greater then or equal to and <l is lease then or equal to)
focus -> y >l 3/4x + 10
1) determine which line has the y-intercept of positive 10
2) is the line dotted or straight? dotted line = > or < while straight line = >l or <l
this should get rid of B and D now
3) remember this = if the slope is - then the shaded portion would be the way that the less then sign is pointing
( y <l -4x then the shaded portion would be on the left side )
remember again = if the slope is + then the shaded portion would be the way that the greater then sign is pointing
( y <l 4x then the shaded portion would be on the right side )
so the line that we are focused on would have the right side shaded which means that it would be a <l ,so the answer would be C
hope this helped you understand how to solve these a bit better!
(tbh the day I figured how to solve these problems, I swear the whole world turned 180 degrees for me. )
Bianca has to drive 180 miles to her aunt’s house. She drove 30% of the total distance before lunch. How many miles did Bianca drive before lunch? Show your work.
Answer:
6 miles
Step-by-step explanation:
180 ÷ 30 = 6
Bianca drove 6 miles before lunch to her Grandma's house.
Marcus bought r movie posters for $6 each. Write an algebraic expression for total amount Marcus spent.
Answer:
6*R
Step-by-step explanation:
because if R is the amount of posters you can do the 6 multiplied by the R to help
Joe went on holiday to Spain.
His flights cost a total of £320
Joe stayed in an apartment for 3 weeks.
The apartment cost 560 euros each week.
Joe hired a car for 15 days.
The car hire cost 20.16 euros each day.
The exchange rate was £1 = 1.12 euros.
Work out the total cost, in pounds, of the flights, the apartment and the car hire.
**please help due today I am behind please, please 17 points **
There are no more than 20 children in the daycare at any given time. Which inequality represents this situation?
1. c>20
2. c≥20
3. c≤20
5. c<20
Answer:
3
Step-by-step explanation:
It is number one.
if there are no more than 20, that means there are less. If one doesnt work try number 2.
What is the solution of 5y + 2 = 42?