Solve by substitution: y=3x and x+y=-32
Answers
Answer:
X=-8, y=-24
Step-by-step explanation:
Y=3x
x+y=-32
substitute value of y (3x) from first equation to the second equation
x+3x=-32
4x=-32
x=-8
solve for y by putting value of x (-8) into either equation
y=3x
y=3(-8)
y=-24
0r
x+y=32
-8+y=-32
y=-24
Related Questions
PLEASE ANSWER FAST!!!
An object is launched vertically at a velocity of 160 feet per second from the top of a building 100 feet above the ground. Use the model h=-16t^2+vt+c where h is the height of the object at any time t, c is the initial height, in feet, of the object, t is the time in seconds and v is the velocity of the object.
How long will it take the object to reach the maximum height, and what is the maximum height?(Round to the nearest whole number)
Answers
Answer:
The question let's us set up the equation
Hope it helps!
Step-by-step explanation:
160= 16t^2+96t+16 and we just solve for t to get t= 3(sqrt 2 - 1) and -3(sqrt 2 - 1).
Hope it helps!
What is the value of x in the figure qor =65 and dot =70 ? Not at is a straight line
Answers
Answer:
its 65
Step-by-step explanation:
if you add it up u would see
(40)
8. Use the information in the figure
below to answer questions a. and b.
70°
W
N
Х
35°
a. What is mZw?
b. What is mZz?
Answers
z= 55
for w take 90+35 then your answer minus 180 which would equal 55. w and y are vertical angles therefore you can add 55+70 and get 125, 180-125= 55, so 55 would be the answer for both w and z
Help ASAP I’m so confused
Answers
Answer:
1) 0.1 unit
2) 0.1 unit²
3) 0.15 unit²
what is the fraction 7 x 1/4 = ____
Answers
7/1 x 1/4
= 7/4
Answer:
4/7 is the answer
Step-by-step explanation:
7 x ¼
=7/4
Find the areas of the trapezoids.
Answers
Answer:The top side is 5,the top is 2,the bottom side is 5,and the bottom is 5
Answer For the other shape:The top is 2,the bottom is 6,the left is 4,the right is 4
Step-by-step explanation:
Evaluate cos(60 degrees). Write your answer simplified, rationalized form.
Answers
Answer:
1 / 2
Step-by-step explanation:
Cos 60°
= 1 / 2
1 / 2 is the answe.
PLZ HELP DUE IN 45 MIN
If angle ABD is 125° and angle BAC is 40° what is the angle measurement of BCA?
Answers
Answer: C. 85
Step-by-step explanation: subtract 125 from 40
So angle BCA is 180-(55+40)=180-95=85
Please help me simplify this! Thank you so much!
Answers
Step-by-step explanation:
8∧-2 x (8∧2)∧3
=8∧-2 x 8∧6
=8∧(-2+6)
=8∧(4)
How do I get from step 2 to step 3?
Answers
Answer:
do the floss
Step-by-step explanation:
But I really don’t know
Sorry :(
Add the fractions 3/14+15/21. Simplify your answer
Answers
The solution of fractions 3/14 + 15/21 is,
⇒ 3/14 + 15/21 = 39/42
We have to given that,
To add the fractions 3/14 and 15/21.
Now, We can add the fractions as,
⇒ 3/14 + 15/21
Since, LCM of 1 and 21 are 42.
Hence, Make the denominator same,
⇒ 9/42 + 30/42
⇒ (9 + 30) / 42
⇒ 39/42
Therefore, The solution of fractions 3/14 + 15/21 is,
3/14 + 15/21 = 39/42
Learn more about the fraction visit:
https://brainly.com/question/5454147
#SPJ6
-4(3x - 2x + 4y)
Simplify the expression
Answers
Answer:
− 4 x − 16 y
Step-by-step explanation:
Answer:
− 4 x − 16 y
Step-by-step explanation:
Please help me PLEASE
Answers
Answer:
the answer would be Point F
Answer:
The answer is F
Step-by-step explanation:
What is the positive solution to the equation 2x^2 = 72?
Answers
Answer:
x= 6
Step-by-step explanation:
6*6=36*2=72
x^2=36
x=±6
x=6
x=-6
Surface area to volume ratio for a sphere
Answers
Given the function h(n)= n squared - 1, find h(-4).
Answers
(-4)^2=16
16-1=15
h(-4)=15
Pls help! Due soon. I will give brainiest *no links*
Answers
Answer:
#2 a.
#3 c.
#4 a.
#5 c.
#6 b.
56,095 to the nearest whole number
Answers
Answer:
56,000
Step-by-step explanation: the neareat whole number is 6000 so you yust take away the 96 and add two zeros
Find the area of the semicircle. Round your answer to the nearest hundredth. PLSSSSSSS!!!!!!!!!!!
Answers
Answer:
1.57 ft²
Step-by-step explanation:
Diameter = 2ft
Radius = 1/2 (diameter) = 1 ft
Area of semicircle = 1/2( πr²)
Area = 1/2 (3.14)(1)²
Area = 1/2(3.14)
Area = 1.57 ft²
|y-x|, if y>x PLZ HELP
Answers
Answer:
56tt8989899999999×-×554545--455356788:988
How to solve this question
Answers
Answer:
D) 60°
Step-by-step explanation:
Because TV and YZ are parallel, and TY and VZ are equal, angle T is equal to angle V. Also, Y and Z would each be 120°.
Which graph shows a line with an x-intercept of (-4, 0) and a slope of −2/5
Answers
vzxxbxcbxvzbfdbnjdznvnjzkxnvjnjnjdb
lolhjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjodskvxhugvgxjchvgkzjgvcgkjzx
Plz help I’m down bad atm
Answers
Answer: Second option, 2^2x+6=2^6
Step-by-step explanation:
You can simplify 4^x+3 by making the 4 into 2^2. By doing this you also multiply the current powers of 4 by 2, giving you (x+3) • 2, furthermore, 2^2x+6.
64 is a power of 2, so just multiply 2 by itself until you get the number you’re looking for and count how many times you do it. Or just type each option, like 2^4, 2^6 into the calculator until you find it.
Please help me with this ASAP ASAP please please help
Answers
Answer:
Step-by-step explanation:
Base perimeter : 4 x 2 x π = 8π cm
LA = 8π x 4 = 32π cm^2
Base area: 4^2 π = 16π cm^2
SA = 2 x 16π + 32 = 64π cm^2
V = 16π x 4 = 64π cm^3
many do apply pls helpn
Answers
Answer:
a and b
Step-by-step explanation:
i think b i know a for sho
Answer:
32w+3
Step-by-step explanation:
8x4w=32w and you are left with the 3, so it ends up 32w+3
for the function f(x)=4/3x+8, what is the average rate of change over any given interval
a. 4
b. 3
c. 4/3
d. 3/4
Answers
Answer:
C i think i hope it helps
have a good night
Use your exponent rules to express as a single power, 9^4 ÷ 27^2
Make sure to do it step by step
Answers
Answer:
9
Step-by-step explanation:
9^4=3^8
27^2=3^6
when we divide the powers of the same base ,we take the common base and subtract their exponent.
3^8-^6
=3^2
=9
unknown
QUESTION 27
A research survey of 4750 adults found that 4275 had purchased something online of these shoppers, 789 are weekly online shoppers.
Construct a 99% Confidence interval estimate of the population proportion of adults who had purchased something online
A The Point Estimate equals 50.60
(Round to 1 decimal place)
B. The Standard Error equals 1243
(Round to 4 decimal places)
The Critical Value equals
(Round to 2 decimal places)
(Round to 4 decimal places)
D. The Margin of Error equals
and
E. & F. We are 99% confident the true proportion of adults who purchased something online is between
(Round to 4 decimal places)
Answers
Using the z-distribution, it is found that characteristics are:
a) 0.2
b) 0.0058
c) z = 2.575
d) 0.0149
e) (0.1851, 0.2149).
f) We are 99% confident the true proportion of adults who purchased something online is between 0.1851 and 0.2149.
Item a:
The point estimate is the sample proportion, hence:
[tex]\pi = \frac{789}{4750} = 0.2[/tex]
Item b:
The standard error is:
[tex]s = \sqrt{\frac{p(1 - p)}{n}} = \sqrt{\frac{0.2(0.8)}{4750}} = 0.0058[/tex]
Item c:
99% confidence level, hence[tex]\alpha = 0.99[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.99}{2} = 0.995[/tex], so [tex]z = 2.575[/tex].
Item d:
The margin of error is:
[tex]M = zs = 2.575(0.0058) = 0.0149[/tex]
Item e:
The interval is the point estimate plus/minus the margin of error, hence
[tex]\pi - M = 0.2 - 0.0149 = 0.1851[/tex]
[tex]\pi + M = 0.2 + 0.0149 = 0.2149[/tex]
The 99% confidence interval estimate of the population proportion of adults who had purchased something online is (0.1851, 0.2149).
Item f:
We are 99% confident the true proportion of adults who purchased something online is between 0.1851 and 0.2149.
A similar problem is given at https://brainly.com/question/16236451
|x − 5| − |2 − x| + |x + 1| , if x ≥ 5
Answers
Answer:
9990% 222$
Step-by-step explanation:
if you work it will help u head
I need the answer with justification please
Answers
The chance of getting an even number for 1 roll is 1/2 ( half the numbers are even.)
For 3 times in a row:
1/2 x 1/2 x 1/2 = 1/8
The answer is 1/8