Answers
Answer:
x=-4 y=-1
Step-by-step explanation:
Let's solve your system by substitution.
−3x−8y=20;y=5x+19
Rewrite equations:
y=5x+19;−3x−8y=20
Step: Solve y=5x+19for y:
y=5x+19
Step: Substitute5x+19foryin−3x−8y=20:
−3x−8y=20
−3x−8(5x+19)=20
−43x−152=20(Simplify both sides of the equation)
−43x−152+152=20+152(Add 152 to both sides)
−43x=172
−43x
−43
=
172
−43
(Divide both sides by -43)
x=−4
Step: Substitute−4forxiny=5x+19:
y=5x+19
y=(5)(−4)+19
y=−1(Simplify both sides of the equation)
Answer:
x=−4 and y=−1
Related Questions
I need help finding the surface area of this pyramid.
Answers
Answer:
451.92
Explanation:
(Please tell me if this is wrong, or if you want the equation or something)
Shaan’s math homework scores for the semester are 90, 85, 98, 60, 84, and 78. Shaan’s teacher said she would drop the lowest homework score when calculating grades. How does the mean of Shaan’s actual math scores compare to the mean of the scores when the lowest one is dropped?
a
The final mean is the same as the original.
b
The relationship cannot be determined.
c
The final mean is lower than the original.
d
The final mean is higher than the original.
Help plez c:
Answers
Answer: D the final mean is higher than the original
Step-by-step explanation:
90+85+98+60+84+78/6= 82.5 as the original mean
dropping 60 which is the lowest grade means 90+85+98+84+78/5=87 which means the new mean is 87 which is greater than the original mean of 82.5
So the answer is D
the value of n for the equation 4n = (48)(42)
Answers
Answer:
504
Step-by-step explanation:
In order to solve, you have to isolate n.
first combine like terms on the right side.
48×42=2016
4n=2016
Now to isolate the n, divide each side by four.
n/4=2016/4
n=504
Please help I need this ASAP please
Answers
Answer:
235 sq. cm
Step-by-step explanation:
Split into three different shapes
18*3=54
15*6=90
13*7=91
54+90+91=235
1/3+ blank =3/4 plsssss help
Answers
Answer:
= 5 /1 2
Step-by-step explanation:
A pig cost #x and a goat cost #y less than a pig
Answers
Answer:
you have to add at least one of the animals price in order for it to be solved
Step-by-step explanation:
Find the tangent of
Answers
Step-by-step explanation:
tangent < I
= p / b
= HJ / HI
= 56 / 33
Hope it will help :)
The original price of a ski jacket was $230. It was on sale at a 25% discount. Arianna had a coupon for an additional 10% off the sale price.
What price did Arianna pay for the ski jacket?
Answers
Answer:
$5.75
Step-by-step explanation:
25% of 230 is 57.5. 10% of 57.5 is 5.75. So Arianna spent $5.75 for the ski jacket.
What's the answer to 8m - 14=3m+46
Answers
Answer:
Simplifying
8m + -14 = 3m + 46
Reorder the terms:
-14 + 8m = 3m + 46
Reorder the terms:
-14 + 8m = 46 + 3m
Solving
-14 + 8m = 46 + 3m
Solving for variable 'm'.
Move all terms containing m to the left, all other terms to the right.
Add '-3m' to each side of the equation.
-14 + 8m + -3m = 46 + 3m + -3m
Combine like terms: 8m + -3m = 5m
-14 + 5m = 46 + 3m + -3m
Combine like terms: 3m + -3m = 0
-14 + 5m = 46 + 0
-14 + 5m = 46
Add '14' to each side of the equation.
-14 + 14 + 5m = 46 + 14
Combine like terms: -14 + 14 = 0
0 + 5m = 46 + 14
5m = 46 + 14
Combine like terms: 46 + 14 = 60
5m = 60
Divide each side by '5'.
m = 12
Simplifying
m = 12
Answer:
m = 12
Step-by-step explanation:
We want to isolate "m" on one side of equation to see what it is equal to.
Step 1.
Add 14 to both sides of the equation to get 8m = 3m + 60
Step 2.
Subtract 3m from both sides to get 5m = 60
Step 3.
Divide both sides by 5 to get m = 12.
which of the following functions have the same y-intercept as the function below select all that apply
Answers
Answer:
can you add a picture of the problem?
Help!!! The picture!
Answers
Answer:
>
Step-by-step explanation:
open means its not equal to and it pointing to the right so your inenquality has to point to the right
what the slope and the y intercept for-12x+4y=-8
Answers
Answer:
slope is -3
y-intercept is -2
Step-by-step explanation:
put into slope-intercept form which is y = mx + b where 'm' is slope and 'b' is the y-intercept
12x + 4y = -8
4y = -12x - 8
y = -12/4x - 8/4
y = -3x - 2 (simplified)
Okay have posted this again.
Answers
Answer:
Acute and Equilateral
Step-by-step explanation:
The little dashes on the sides indicate congruent sides
Each side has a singular dash meaning that all the sides are congruent. If all the sides are congruent then all of the angles are congruent
The angles in an equilateral triangle are 60
An acute triangle angles are all less than 90
All of the angles in a equilateral triangle are less than 90 therefore this is an equilateral acute triangle
Answer:
acute equilateral
Step-by-step explanation:
please help! i need answers
Answers
Answer:
I think 90°
Step-by-step explanation:
I was not good in maths that's why I'm not sure about this answer
Find the volume of the cone below. Use 3.14 for A. Round your answer to the nearest tenth.
3
r = 1.5
Answers
Answer:
D) 7.1 units³
Step-by-step explanation:
V = (3.14)(1.5)²(3/3)
= (3.14)2.25 = 7.1
S
What is the solution to this system of equations?
3x + y = 2
2 + 3y
-
--18
re
O (2,-6)
ware
O (3,-7)
(-6, 2)
aphing
O (-7,3)
Answers
Answer:
-7,3
Step-by-step explanation:
look at the pictire
Find the area of each object. Round each answer to the nearest tenth, if necessary.
Answers
Answer The small triangles each have an area of 12m^2 and the big rectangle had an area of 80m^2. This would mean that the combined area is 104m^2
Step-by-step explanation: The rectangle shape can be found by multiplying 8 by 10 to get 80m^2. The two triangles can be found by multiplying 4 (half of 8) by 6 and then dividing it by two. This would mean that the small triangles each have an area of 12.
m - 4.21 = 87.654 What is the value of m
Answers
Answer:
91,864
Step-by-step explanation:
you welcome
thank god me
also youre
self:):D
What is the slope of the line that passes through the points (-4, -9) and (5, 3)
Answers
Answer:
4/3
Step-by-step explanation:
Moving from (-4, -9) to (5, 3), x (the 'run') increases by 9 from -4 to 5, and y (the 'rise') increases by 12 from -9 to +3. Thus, the slope of the line connecting the two points is
m = rise / run = 12/9 = 4/3
It may help to think of the change in x (9) as the horizontal leg of a right triangle and the change in y (12) as the vertical leg. Then
m = (vertical leg length) / (horizontal leg length) = 12/9 = 4/3
What is (h to the power of 4) to the power of 7 simplified?
Answers
Answer:
h^28
Step-by-step explanation:
^ =to the power of=)
Please help answer correctly !!!!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!
Answers
Answer:
AB to FC are parallel
Step-by-step explanation:
Can someone help me please it’s important
Why is calculus rule important in math
Answers
Answer:
It is used to create mathematical models in order to arrive into an optimal solution. For example, in physics, calculus is used in a lot of its concepts. Among the physical concepts that use concepts of calculus include motion, electricity, heat, light, harmonics, acoustics, astronomy, and dynamics.
Step-by-step explanation:
Hope It Help
I NEED HELP FOR ALL 4 OF THOSE! THAT’S IT! PLZZZZ AND TY
Answers
Answer:
Step-by-step explanation:
Given equation of a straight line is,
y = -4 - 2x
Domain of the line (x) → {-3, -2, -1, 0, 1}
Therefore, range for the given set of domain will be,
Range (y) → {2, 0, -2, -4, -6}
[By substituting the value of x in the given equation we get the value of y]
Set of scatter points are,
(-3, 2), (-2, 0), (-1, -2), (0, -4), (1, -6)
Now we plot these points to get the discrete graph as attached.
how many terms are in the 10m + 5k
Answers
5(2m+k)
Step-by-step explanation:
Factor the polynomial 10m+5k10m+5k by it's GCF: 55
5\left(2m+k\right)
5(2m+k)
Select the correct answer.
A square field has an area of 10 square miles. What is the approximate length, to the nearest thousandth, of one side of this field?
A.
2.5 miles
B.
3 miles
C.
3.162 miles
D.
3.612 miles
PLEASE ANSWER THIS ASAP!!!!!
Answers
3.162 times 3.162 equals 10 which makes 3.162 the square root of 10
!! help me pretty please !!
Answers
Answer do we just answer the question or we also have to do something else?
Step-by-step explanation:
Answer:
Step-by-step explanation:
0-2 is 30%
3-4 is 20%
5-6 is 20%
7-9 is 30%
so by his estimations a song bird would come up next at 20% of the time
or in 5 birds 100% percent of the time, but we have to look at his empirical data to see how accurate that is hmmm maybe a good time for a spread sheet or Mat Lab ??? hmm
13/20 is what I counted.. or out of 100
that's 13*5 or 65%
I'm not sure what form they want it in.. percent.. fraction hmm hope that will help :/
Wayne earns 7%
simple interest for 5
years on $3500. What
is the total amount in
the account?
Answers
Answer:
49
Step-by-step explanation:
3500 divided by 5 equals 700
700 times 7% equals 49
What is the median of 28, 44, 20, 20
Answers
Answer:
Mean of data set 28,44,20,20 = (28+44+20+20)/4 = 112/4=28.
Step-by-step explanation:
If you can score 54 points in 6 minutes, how many points are you scoring in one minute? please help all my points.
Answers
Answer:
Step-by-step explanation:
54 / 6= 9
9 points per minute
9 score is the answer ok plz give me brilliant
which function is equivalent to
f(x) = -4 (x+7)^2 - 6
Answers
Answer:
A
Step-by-step explanation:
-4(x^2+14x+49)-6
-4x^2-56x-196-6
-4x^2-56x-202
Answer:
F(x)=-4x^2 - 56x - 202
Step-by-step explanation: