Answer:
The slope is 1/5= rise/run
and y-intercepts is -1
Step-by-step
Giving 40 points
Solve each system by substitution
Step-by-step explanation:
[tex] \underline{ \underline{ \text{Given}}} : [/tex]
-4x - y = 19 -------- Equation ( i ) x - 2y = -7 ----------- Equation ( ii )[tex] \underline{ \underline{ \text{To \: find}}} : [/tex]
Value of x & y[tex] \underline {\underline{ \text{ Solution}}} : [/tex]
From equation ( i ) :
-4x - y = 19
-y = 19 + 4x
-y = - ( -19 - 4x )
y = -4x - 19 ------ Equation ( iii )
Substituting the value of y from equation ( iii ) in equation ( ii ) , we get :
[tex] \tt{x - 2y = - 7 }[/tex]
⇾ [tex] \tt{x - 2( - 4x - 19) = - 7}[/tex]
⇾ [tex] \tt{x + 8x + 38 = - 7}[/tex]
⇾ [tex] \tt{9x = - 7 - 38}[/tex]
⇾ [tex] \tt{9x = - 45}[/tex]
⇾ [tex] \tt{x = \frac{ - 45}{9}} [/tex]
⇾ [tex] \boxed{ \tt{x = - 5}}[/tex]
Substituting the value of x in equation ( i ) , we get :
⇾ [tex] \tt{ - 5 - 2y = - 7}[/tex]
⇾ [tex] \tt{ - 2y = - 7 + 5}[/tex]
⇾ [tex] \tt{ - 2y = - 2}[/tex]
⇾ [tex] \tt{y = \frac{ - 2}{ - 2}} [/tex]
⇾ [tex] \boxed{ \tt{y = 1}}[/tex]
The possible solution of the system is ordered pair ( x , y ) = ( -5 , 1 ) .
[tex] \red{ \boxed{ \boxed { \tt{Our \: final \: answer : \boxed{ \tt{( - 5 \:, 1 \: )}}}}}}[/tex]
Hope I helped ! ツ
Have a wonderful day / night ! ♡
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(can someone give me like 300pts? Please and Thank u) Whats the square root of 5923?
PlZZZZZZZZZ HELP URGENTTTTTTTTTt
Find the unit rate.
$11.40 for 6 gallons
Answer:
$ 1.90 for 1 Gallon
Step-by-step explanation:
11.40/6 = 1.90
another way you can show the answer is: $1.90/1 Gal.
What is the length of the altitude of the equilateral triangle below?
Answer:
Step-by-step explanation:
It would be helpful if you could share the diagram of the equilateral triangle.
All 3 sides are equal, as are all 3 angles.
The altitude is perpendicular to the base. The altitude, h, is equal to
h = s*( (√3) / 2, where s is the length of one side of the triangle.
PLS HELP ITS TIMED!!!
In 5 years, radioactivity reduces the mass of a 100-gram sample of an element to 75 grams. Find the constant k for this element for t in years, the write the equation for modeling this exponential decay
Value of constant 'k' = -0.041097
Equation modeling the exponential decay → [tex]\text{ln}\frac{N}{N_0}=-0.41097t[/tex]
Rule for the radioactive decay: Rule for the radioactive decay is given by the expression,
[tex]\text{ln}\frac{N}{N_0}=-kt[/tex]
Here, N = Amount remaining after 't' years
N₀ = Initial amount of the radioactive element
k = Constant
t = Period of decay
Given in the question,
N = 100 gms N₀ = 75 gms t = 5 yearsSubstitute these values in the expression for the value of 'k',
[tex]\text{ln}\frac{75}{100}=-7k[/tex]
[tex]k=\frac{1}{7}[(\text{ln}(75)-\text{ln}(100)][/tex]
[tex]k=\frac{1}{7}[4.317488-4.605170][/tex]
k = -0.041097
Equation modeling the exponential decay → [tex]\text{ln}\frac{N}{N_0}=-0.41097t[/tex]
Therefore, value of constant 'k' = -0.041097
Equation modeling the exponential decay → [tex]\text{ln}\frac{N}{N_0}=-0.41097t[/tex]
Learn more about the radioactive decay here,
https://brainly.com/question/9660135?referrer=searchResults
Find each function value 1. f(2) if f(x) = x + 4
Answer:
The function value would be 6
Step-by-step explanation:
If f(2) then....
f(x) = x + 4
f(2) = 2 + 4
f(2) = 6
Find the difference (6d+5)−(2−3d)
Answer:
9d+3
Step-by-step explanation:
(6d+5)-(2-3d)= cancel out parentheses
6d+5-2+3d= Commutative property of addition
6d+3d+5-2= Group like terms
(6d+3d)+(5-2)= Combine like terms
Answer = 9d+3
PLEASE HELP ILL GIVE U BRAINLEST PLUS 50 POINTS IF U GET IT RIGHT
Answer:
[tex]-10x^{2}-9x-6[/tex]
Step-by-step explanation:
Combining like terms:
[tex]-7x^{2}-3x^{2}-10x+x-6[/tex]
[tex]-10x^{2}-9x-6[/tex]
X + 3 = -6+4x help please
Answer:
x = 3
Step-by-step explanation:
I hope this helps!
Answer:
x = 3
Step-by-step explanation:
I hope this helps
the perimeter of a rectangle is 36 feet. the length is 2 less than 3 times the width. what is the length? what is the width?
Answer:
The width is 102
Step-by-step explanation:
Hope this helps! :)
Write an inequality to represent the graph.
y ≥ 2x + 4
y > 2x + 4
y 4x + 2
Answer:
y ≥ 2x + 4
Step-by-step explanation:
Noah bought 15 baseball cards for $9. At this rate, what is the cost of 1 baseball card?
Answer:
$0.60
Step-by-step explanation:
9 divided by 15 = 0.6 so that would be $0.60, if you want to check if it's accurate then do 0.60x15 and you get 9
Identify the scale factor when we scale up from Figure S to T. Just write the number.
Answer:
Scale factor = 4
Step-by-step explanation:
Scale factor = [tex]\frac{\text{Dimension of the image}}{\text{Dimension of preimage or original}}[/tex]
Since, S is being dilated with a scale factor to form T,
So, the figure S is the preimage and figure T will be the image,
Length of one side of image T = 8
Length of one side of preimage = 2
Therefore, Scale factor = [tex]\frac{8}{2}[/tex]
= 4
Scale factor by which figure S has been dilated to form figure T is 4.
In the circus, a lion has been trained to jump through a ring of fire. The trainer measures the ring and calculates that it has a circumference of 6.28 meters. What is the ring's diameter?
Answer:
6.28 x 3.14 = 19.7192
Step-by-step explanation:
A sequence is recursively defined as a(n)=2a(n-2) for values of n>2. Find the seventh term of the sequence if a(1)=0 and a(2)=1
Answer:
a(7) = 21
Step-by-step explanation:
Using the recursive formula and a(1) = 0, a(2) = 1 , then
a(3) = a(2) + 2a(1) = 1 + 2(0) = 1 + 0 = 1
a(4) = a(3) + 2a(2) = 1 + 2(1) = 1 + 2 = 3
a(5) = a(4) + 2a(3) = 3 + 2(1) = 3 + 2 = 5
a(6) = a(5) + 2a(4) = 5 + 2(3) = 5 + 6 = 11
a(7) = a(6) + 2a(5) = 11 + 2(5) = 11 + 10 = 21
Can someone Plz help me on this........
Answer:
1) a≥−2.5
2) n<1.2
3) b≥−0.8
4) false,
5) r≤0.1
6) y≤0.8
Step-by-step explanation:
1) Divide both sides by -3.2.
−3.2a/-3.2 ≤ 8/-3.2
2) Flip the equation
- n+0.8<2
Subtract 0.8 from the sides
n+0.8−0.8<2−0.8
3) Add 4.2 to both sides.
b−4.2+4.2≥−5+4.2
4) inequality cannot be solved
5) Simplify both sides of the inequality.
−r+5.1≥5
Subtract 5.1 from both sides.
−r+5.1−5.1≥5−5.1
−r≥−0.1
Divide both sides by -1.
-r/-1 ≥ -0.1/-1
6) Flip the equation.
−1.8y≥−1.44
Divide both sides by -1.8.
−1.8y/−1.8 ≥ −1.44/−1.8
good luck with your work!!
please help!!!!
it’s due today and it’s worth 30% of my grade!!!!
Answer:
2nd one because that's the proportion a
1. Randy owns 120 baseball cards, and Phil owns 95 baseball cards. The number of baseball cards Davis owns is equal to 5 times the difference between Randy's number of cards and Phil's. How many cards does Davis own?
2. A marketing manager wants to package 48 promotional items into 1 supervalue pack and 10 smaller promotional packs. He uses 8 items for the supervalue pack and equally divides the rest into the smaller packs. How many items will be in each of the smaller packs?
3. For an art project, Corinne and Amelia want to combine their colored pens and distribute them equally among 12 first graders. If Corinne has 84 colored pens and Amelia has 72 colored pens, how many pens does each first grader get?
4. Lynn paid $12.21 for ribbon. The cost per yard was $1.48. How many yards did she get?
5. Find the quotient of 72.86 ÷ 7.1. Round to the nearest hundredth.
6. Kelly has 17.8 oz of dough. How many circles of dough can she cut that are 3.9 oz each? Round to the nearest hundredth.
7.What is 64 ÷ 4.7? Round to the nearest hundredth.
Answer: For number 1 its 125
Number 2 is 4 items , Number 3 is 13 pens
Step-by-step explanation:
Can someone pls help with this ill mark u brainliest
Answer:
Use the linear pair axiom
answer will be 35 degrees
The Barber are keeping track of their family energy costs. It costs the Barbers $0.16 per week to run their dishwasher. How much will it cost them to run their dishwasher for 52 weeks
Answer:
It will cost them $8.32 to run their dishwasher for 52 weeks.
Step-by-step explanation:
With the information provided, you can say that the cost to run the dishwasher is equal to the cost per week for the number of weeks, which would be:
Total cost=$0.16*number of weeks
Since you want to determine the cost to run the dishwasher for 52 weeks, you can replace the number of weeks in the formula to get the answer:
Total cost=$0.16*52
Total cost=$8.32
According to this, the answer is that it will cost them $8.32 to run their dishwasher for 52 weeks.
there is 3/5 liter of milk left in a container. A child drinks 2/3 of it. How many liters of milk does the child drink
Answer:
6/15
Step-by-step explanation:
3/5*2/3=6/15
10 points. Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I will report fake, incomplete, and wrong answer! Answer wisely will clear explanation!!
Answer:
The answer (in scientific notation) should be 1.8 x 10^2.
Step-by-step explanation:
(2 x 10^6) x (0.00009) = ?
(2 x 1,000,000) x (0.00009) = ?
2,000,000 x (0.00009) = 180
180 as a scientific notation is 1.8 x 10^2.
-2(2x) simplified please
Answer:
-4x
Step-by-step explanation:
Answer:
-4x
Step-by-step explanation:
What is the length of the each side?
please someone help
Answer:
each side 5
Step-by-step explanation:
with 2 equal internal base angles, we know this is an isosceles triangle
this being isosceles also tells us that the 2 opposite sides are also equal
Therefore: x + 2 = 3x - 4
solving for x
x - 3x = -4 -2
-2x = -6
x = -6 ÷ -2
× = 3
substituting x:
x +2 = 3 + 2 = 5
3x-4 = 9 - 4 = 5
The two triangles shown are congruent by the SAS Theorem Which statements, when combined, describe a sequence
of rigid motions which maps AABC to AEDF?
Answer: It is B, C, E
B- a tra asian between the two figures maps <c to <f
C- Air rotation mapping CB to FD and <B to <D
E- A reflection across CB mapping AC to EF, and <A to <E
Step-by-step explanation:
The rigid motion that verifies the triangles are congruent by SAS is reflection.
What is an angle?In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle. The two rays are called the sides of an angle, and the common endpoint is called the vertex.
here, we have,
we know that,
The angle of reflection simply means the angle that's formed between the normal ray and the reflected ray. It's the line that's perpendicular to the resulting surface at the point of incidence.
According to the law of reflection, the angle of reflection must be equal to the angle of incidence. Therefore, the rigid motion that verifies the triangles are congruent by SAS is reflection.
Hence, The rigid motion that verifies the triangles are congruent by SAS is reflection.
Read related link on angle:
brainly.com/question/17296106
#SPJ5
What is the solution to the equation? -3x + 7 = -2
I need help with these questions! :)
Last word is sorta cut off but it’s musee
Answer:
17. We study French
a. at school
b. to the building
c. at the theatre
18. Philippe watches TV in
a. the bathroom
b. the street
c. the living room
19. the car and the bikes are in
a. the garage
b. the living room
c. the kitchen
20. There is a good cinema and a Mexican restaurant in my
a. garage
b. district
c. Museum
can you please give me brainliest this was very hard
thanks
-kitten
Find the measure of angle a
Answer:
angle A = 47°
angle B= 48°
Step-by-step explanation:
4x+ 4x+ 4+3+85=180°
8x+92=180°
8x= 180-92
8x= 88°
x= 11°
angle A = 4(11)+3= 47°
angle B = 4(11)+4= 48°
The recipe has a ratio of 3 cups of sugar to 5 cups of flour. What is the unit rate of sugar to flour?
Answer:
3over 5
Step-by-step explanation:
lol its that simple
Answer:
zvck zvmv
Step-by-step explanation: