Answers
Answer:
x = 2.5
y = 5
Step-by-step explanation:
2x + 3y = 20
2x + y = 10 then y = 10 - 2x
substitute for y:
2x + 3(10 - 2x) = 20
2x + 30 - 6x = 20
reduce:
-4x = -10
divide both sides by -4:
x = 2.5
y = 10 - 2(2.5) = 5
check:
2(2.5) + 3(5) = 20
20 = 20
and
2(2.5) + 5 = 10
10 = 10
Related Questions
help please HUREEEEYTTT
Answers
Since A is moved down by 11 units and moved right by 4. We can use Point D’s coordinate to find where Point D1 will be.
Original coordinate of D: (3,1)
Coordinate of D1
= (3+4 , 1-11)
= (7,-10)
You plus 4 because it’s moved to right by 4 units. And minus -11 because it’s moved down by 11 units.
If the figure is,
- Moved up, we plus
- Moved down, we minus
- Moved right, we plus
- Moved left, we minus
For right and left, we use the x-coordinates. And for up and down, we use the y-coordinate.
Hope this helps!
please help with maths work
Answers
Given:
In a right angle triangle ABC, [tex]\angle B=90^\circ,x=8.7\ m[/tex], and [tex]\theta = 45^\circ[/tex]
To find:
The value of AC.
Solution:
In a right angle triangle,
[tex]\cos \theta =\dfrac{Adjacent}{Hypotenuse}[/tex]
[tex]\cos \theta =\dfrac{BC}{AC}[/tex]
[tex]\cos (45^\circ) =\dfrac{8.7}{AC}[/tex]
[tex]\dfrac{1}{\sqrt{2}}=\dfrac{8.7}{AC}[/tex]
On cross multiplication, we get
[tex]AC=8.7\times \sqrt{2}[/tex]
[tex]AC=12.30365799[/tex]
[tex]AC\approx 12.304[/tex]
Therefore, the measure of AC is 12.304 m.
1.To make paper mache, the art teacher mixes water and flour. For every 2
cups of water, she needs to mix in 3 cups of flour to make the paste. Which
of the following shows an equivalent ratio for the ratio of water to flour? I need an answer quick!!!!
Answers
Answer:
1:1.5 or 2:3 or 4:6 or 8:12, etc. is the ratio
Step-by-step explanation:
How tall is a building 100 feet away if the angle of elevation from the ground to the
top of the building is 20 degrees?
Answers
Answer:
i think it is 50ft but i'm not too sure
Step-by-step explanation:
if you take the 100ft and than use the 20 degrees and divide them you get 50 ? so maybe, just 100 divided by 20
Robert joins a gym and pays a 25 application fee he pays 10 a month for 1 year how much money in total does Robert spend on gym fees for entire year
Answers
Answer:
$145
Step-by-step explanation:
10×12=120+25=145
Given: t is tangent at B
is diameter
If m = 110°, then m =
70
80
110
Answers
Answer:
70
Step-by-step explanation:
Given
∠PDB = 110°
PDis the tangent to the circle whose centre is E
Construction
Join points D and E.
∠DPE= 90° [Since angle in a semi circle is 90°]
Also ∠PDE = 90° [Since radius ⊥ tangent]
From the figure we have,
∠PDB=∠PDE + ∠DBE
i.e. 110° = 90° + ∠DBE
Therefore, ∠DBE =20°
Now in ΔBED, BE = ED [Radii]
So, ∠EDB = ∠EBD =20°
In ΔBPD, we have
∠DPE = 90° & ∠DBE = 20°
Therefore, ∠DPB = 70°
Answer:
70 is the correct answer
Step-by-step explanation:
18. The perimeter of the given triangle is 36 cm.
Find the value of x.
Answers
Answer:
x = 7
Step-by-step explanation:
(x+2)+(3x-9)+(2x+1) = 36
6x - 6 = 36
6x = 42
x = 7
Help pls show brainly
Answers
Answer:
10
Step-by-step explanation:
125 divided by 12.5
Answer: 10 dresses
Step-by-step explanation:
125/12.5=10
For every dress she needs 12 1/2 yards of fabric so what multiple of 12.5 is equal to or less than 125 and thats 10
What is the relationship between 30 hours and 15 hours?
Answers
Answer:
3
Step-by-step explanation: 15 divided by 3 is 5, 30 divided by 3 is 10
what is the perimeter of 12cm and 18cm
Answers
Answer:
40cm.
Step-by-step explanation:
40cm is the answer .
Please help me will mark brainliest
Answers
The longest angle is opposite to the longest side in a triangle. The same goes for the shortest and middle angles.
B is opposite to the 57 degree angle, the shortest angle, so it’s the shortest side. A is opposite to the 59 degree angle, so it is the second shortest side. C is opposite to the 64 degree angle, the largest angle, so it’s the longest side.
Pls help me pls I’ll give brainliest pls dont answer if you don’t know
Answers
Answer:
x=-2
Step-by-step explanation:
Like terms are terms that are like each other
2x and x both have x
3 and 9 are both constants
Move them so they are next to each other
-2x-x=9-3
-3x=6
x=-2
How long of a shadow would a 6-
foot man cast?
Answers
Answer:
it depends on where the light source is
Hi guys can you answer my math questions
Answers
Answer:
4. 6 means 6 tenths and 2 means 2 hundredths
5. 115.25
6. A6:48
B. 4:45
please do, thank you
1) write a real world problem for the following inequality X < 17
2) draw a number line and graph the inequality
3) make a cartoon strip, model or short video to represent your problem
Answers
Answer:
{poiuyt
Step-by-step explanation:
Question 1 options:
68°
136°
158°
112°
Answers
9514 1404 393
Answer:
(d) 112°
Step-by-step explanation:
Opposite angles in an inscribed quadrilateral are supplementary.
∠P = 180° -∠R = 180° -68°
∠P = 112°
Answer:
112 degrees.
Step-by-step explanation:
This is an isosceles trapezium.
So the required angle = 180 - 68 = 112.
Two groups of students were asked how far they lived from their school. The table shows the distances in miles:
Group A (distance in miles) 1 1.5 3.03 3.2 2.8 1.5 1.8 2.5 2.2
Group B (distance in miles) 2 2.5 3.23 1.3 1.8 2.4 3 1.5 1.8
Which statement best compares the mean distances for the two groups?
It is equal for Group A and Group B.
It is greater for Group B than Group A.
Its value for Group A is double the value for Group B.
Its value for Group B is double the value for Group A.
Answers
Answer:
B
Step-by-step explanation
add all numbers then divide by the number of numbers and you get the means
Answer:
B
Step-by-step explanation:
What is the value of the expression below when x=10x=10 and y=4y=4?
8x-7y
8x−7y
Answers
Answer:
Step-by-step explanation:
8(10) - 7(4)
8X10 - 7X4
80 - 28
52
If the slope is -3 and (1, 2) is a point on the line, what is the equation of the line?
Answers
Answer: y=-3x+5
Step-by-step explanation:
First write in point slope form, y-y1=m(x-x1) which is y-2=-3(x-1). Then distribute the -3 and add the negative 2 to the other side to solve for y.
(14)(10)(3) + (7)(4)(3)
Answers
Answer:
504 is the answer
14*10*3 =420
7*4*3 = 84
3) The cost of a movie ticket and a candy bar is $5. The cost of 2 tickets
and a candy bar is $8.75. How much is a candy bar? *
Answers
Answer:
$1.25
Step-by-step explanation:
Given data
let the movie ticket be x and the candy bar be y
x+y= 5-------------1
also
2x+y= 8.75--------2
solve 1 and 2
x+y= 5
2x+y= 8.75
from 1
x= 5-y
put this inplace of x in 2
2(5-y)+y=8.75
10-2y+y= 8.75
10-y= 8.75
10-8.75=y
y= 1.25
Hence candy bar is $1.25
NEED ANSWER ASAP PLEASE
4. Which statement below is true about linear functions?
(1) Linear functions grow by equal factors over equal intervals
(2) Linear functions grow by equal differences over equal intervals
(3) Linear functions grown by equal differences over unequal intervals
(4) Linear functions grow by unequal factors over equal intervals
Answers
Answer:
(1) linear functions grow by equal factors over equal intervals
I think this is right, I may be wrong
Step-by-step explanation:
Hope this helps :)
Can someone please check my answer??!
Answers
Answer:
gj its correct
Step-by-step explanation:
solve 7x-5y=15 helppppp
Answers
Answer:
Y=-7x+15
Step-by-step explanation:
Which of the following equations represents a line that is parallel to the line 3x - 2y = 12
and passes through the point (7, 10)?
Answers
Answer:
Step-by-step explanation:
12=3x-2y
2y+12=3x
2y=3x-12
y=(3x-12)/2
y=mx+b
To be parallel to the line above our line must have the same slope or m. The above line has a slope of 3/2 or 1.5 so the parallel line will be
y=1.5x+b, using point (7,10) we can solve for the y intercept or b
10=1.5(7)+b
10=10.5+b
b=-0.5 so our line is
y=1.5x-0.5
7. Given the systems below, state how many solutions there are. YOU MUST GIVE A
REASON
Answers
Kyle had a balance of -5 dollars in his checking account. After he deposits a certain amount of money into the account, the balance is now 15 dollars.
How much money did Kyle deposit into his checking account?
Answers
Answer:
$20
Step-by-step explanation:
start with an equation. 15-(-5)=x. double negatives make positive so it becomes 15+5=x. therefore 20=x (x being the number kyle deposited).
Find the inverse for me please
Answers
Answer:
(C). [tex]f^{-1}[/tex] = ( x + 4 )² ; x ≥ 0
Step-by-step explanation:
PLEASE HURRRYYYYYYY!!!!!!!!!!
Answers
Answer:
The first one
Step-by-step explanation:
please help me complete this
https://easel.teacherspayteachers.com/activities/student/18109307
Answers
Answer:
can't see the question love