Determine if the given value is a solution of the inequality. Show your work.
7 – 2y > 3y + 13; y = -1
Given:
[tex]7-2y>3y+13[/tex]
To find:
The whether the value [tex]y=-1[/tex] is a solution of the given inequality or not.
Solution:
We have,
[tex]7-2y>3y+13[/tex]
It can be rewritten as
[tex]-2y-3y>13-7[/tex]
[tex]-5y>6[/tex]
Divide both sides by -5 and change the inequality sign.
[tex]y<\dfrac{6}{-5}[/tex]
[tex]y<-1.2[/tex]
All the value of y less -1.2 are the solutions of the given inequality but -1 is greater than -1.2.
[tex]-1>-1.2[/tex]
Therefore, [tex]y=-1[/tex] is not a solution of the given inequality.
PLEASE HELP- I NEED CORRECT ANSWER!!
Select the correct answer. Which inequality is graphed on the coordinate plane?
A. y < 4x + 2
B. y > 4x + 2
C. y ≤ 1/4x +2
D. y ≥ 4x + 2
E. y ≤ 4x + 2
Answer:
y > 4x + 2
Step-by-step explanation:
Y is above the line so the value has to be greater than the line (or equal to, possibly). So it represents > or ≥
A dotted/dashed line is non-inclusive, so it represents < or >.
Since it is both above the line AND non-inclusive, we would use this sign:
>
and this equation :)
y > 4x + 2
Have a nice day. Feel Free to ask questions. Spread the Love.
Answer: y > 4x + 2
Step-by-step explanation:
I NEED THIS ASAP!!
The average length of a female dolphin is about 171 inches (in). What is this length in feet (ft) and inches (in)?
Answer:
14.25ft
171 in
Step-by-step explanation:
A triangle is shown.
300
44 in.
What is the length, in inches (in.), of side a?
in.
help me nowwwwwwwwwwwwwwwww
Answer:
volume = 3x6x2 = 36 cubic inches
Step-by-step explanation:
Answer:
That's easy, just take base times width times Hight. or in this case 6x2x3=
do this on a calculator. :)
Step-by-step explanation:
And anytime you are doing volume, it will always be cubed.
what is the location of point B ?
Answer:
its b
Step-by-step explanation:
(9,-2)
Answer:
(9, -2)
Hope that helps!
Step-by-step explanation:
• A. x = 1
• B. x = -4
• C. x = -1
• D. x = -3
Answer:
C
Step-by-step explanation:
The parabola is symmetrical at x = -1.
If you were to fold it over itself, it would match up if you folded at x = -1
Joe and his 2 friends are making Smores. Each Smore uses 1/4 of a chocolate bar and the package has 8 chocolate bars. How many Smores can the boys make?
Answer:
They made 2 smores. 1/4(8) = 2
Evaluate.
5^3 − (64/8) + 10^2
Enter your answer in the box.
Answer:
210
Step-by-step explanation:
Answer:
217
Step-by-step explanation:
5³ − (64/8) + 10²=125-8+100=217
someone help with this math question!! brainly if correct
Answer:
option 1) tan (46) = 17/x
Step-by-step explanation:
Pls help me I’m failing lolz :)
Does anyone know this will give the brainliest.
Answer:
D
Step-by-step explanation:
i think because the range is 2 because it went up to plots and the domain stay in a flat line
(1) Is climate change causing more severe storms? In a 2017 pre-Hurricane Irma
survey, 486 out of 1,080 adults answered in the affirmative. In a 2017 post-
Hurricane Irma survey, 546 out of 1,050 answered affirmatively. Establish a 90%
Confidence interval estimate of the difference (pre- minus post-hurricane) between
the proportions of adults pre-Hurricane Irma and post-Hurricane Irma who believe
climate change is causing more severe storms.
Answer:
90% Confidence Interval for difference in Proportion = (-0.106, -0.034)
Step-by-step explanation:
The formula for difference in proportions is given as:
p1 - p2 ± z × √p1(1 - p1)/n1 + p2(1 - p2)/n2
p = x/n
In a 2017 pre-Hurricane Irma
survey, 486 out of 1,080 adults answered in the affirmative.
x1 = 486
n1 = 1080
p1 = 486/1080 = 0.45
In a 2017 post- Hurricane Irma survey, 546 out of 1,050 answered affirmatively.
x2 = 546
n2 = 1050
p2 = 546/1050 = 0.52
Z score for 90% confidence interval = 1.645
Confidence Interval
=0.45 - 0.52 ± 1.645 × √0.45 (1 - 0.45)/1080 + 0.52(1 - 0.52)/1050
= -0.07 ± 1.645 × √0.0002291667 + 0.0002377143
=-0.07 ± 1.645 × √(0.000466881)
= -0.07 ± 1.645 × 0.0216074293
= -0.07 ± 0.0355442212
Confidence Interval
-0.07 - 0.0355442212
= 0.1055442212
Approximately = -0.106
-0.07 + 0.0355442212
= -0.0344557788
Approximately = -0.034
Therefore, 90% Confidence Interval for difference in Proportion = (-0.106, -0.034)
A candy company can sell fruit gums in rectangular boxes or in cylindrical tubes. Each box is 8 cm by 3 cm by 7 cm. Each cylinder has radius 3 cm and height 6 cm. The company wants the packaging that uses less material. Which packaging should the company choose? Justify your choice.
Answer:
i. The company should use the cylindrical tubes.
ii. This is because the surface area of the cylindrical tubes, A' = 169.65 cm² is less than the surface area of the rectangular box, A = 202 cm²
Step-by-step explanation:
i, Which packaging should the company choose?
The packaging that uses less material is the one with the least surface area. So, we find the surface area of each material.
For the rectangular box, the surface area, A = 2(lb + lh + bh) where l = length, b = breadth and h = height. Since each box is 8 cm by 3 cm by 7 cm,l = 8 cm, b = 3cm and h = 7cm.
So, ,A = 2(lb + lh + bh)
,A = 2( 8 cm × 3 cm + 8 cm × 7 cm + 3 cm × 7cm)
A = 2(24cm + 56 cm + 21cm)
A = 2(101 cm²)
A = 202 cm²
For the cylindrical tube, the surface area, A' = 2πr(r + h) where r = radius of cylinder and h = height of cylinder.
Since each cylinder has radius 3 cm and height 6 cm, r = 3cm and h = 6 cm.
So, A' = 2πr(r + h)
A' = 2π(3 cm)(3 cm + 6cm)
A' = (6π cm)(9 cm)
A' = 54π cm²
A' = 169.65 cm²
Since the surface area of the cylindrical tubes, A' = 169.65 cm² is less than the surface area of the rectangular box, A = 202 cm²
The company should use the cylindrical tubes.
ii. Justify your choice.
This is because the surface area of the cylindrical tubes, A' = 169.65 cm² is less than the surface area of the rectangular box, A = 202 cm²
Please help I’ll mark brainliest
Answer:
-2-24i
Step-by-step explanation:
vector addition
let x be the value without the vector I
x+7+5=10
x=10-12
x=-2
let y be the value with the vector I
y-3+9+13= -5
y +19= -5
y= -24
Sam has a loan for $1200 at a rate of 9% annually. How much interest will he pay in 5 years? A) $54.40 B) $108.00 Eliminate C) $540.00 D) $1740.00
Answer:
c
Step-by-step explanation:
interest = loan x interest x time
1200 x 0.09 x 5 = $540
Find the constant of proportionality (k). Using the value for k, enter an equation in the form of y = kx.
Answer:
k = 4, y = 4x
Step-by-step explanation:
From the question, we get the ratio of :
x : y = 1 : 4
Two variables are proportional to each other if their ration is constant. The constant value is denoted by 'k' and is called as constant of proportionality.
In the question, the two variables are :
x = glasses of lemonade
y = lemons used
From the question, the ratio of y is to x is given by :
y : x is 24 : 6 = 4 : 1 or 24/6 = 4
32 : 8 = 4 : 1 or 32/8 = 4
28 : 7 = 4 : 1 or 28/7 = 4
8 : 2 = 4 : 1 or 8/2 = 4
16 : 4 = 4 : 1 or 16/4 = 4
So here the constant is 4 . Therefore, the constant of proportionality, k is 4.
So we can write the equation as :
y = kx
or y = 4x
Will arrived at his mother's office at 11:00am. It took him 30 mins to walk from his home to the mall. Will was in the mall for 45 mins. It took will 15 mins to walk from the mall to the office. At what time did will leave home?
Answer: 9:30 am
Step-by-step explanation:
To solve this question, add up the time that Will spent walking from his home to the mall and then the length of time he spent in the mall and then the amount of time it took him to walk from the mall to the office:
= 30 + 45 + 15
= 1 hr 30 mins
Then deduct this number from 11:00 am to find out when he left home:
= 11 am - 1 hr 30 mins
= 9:30 am
if you roll two standard die what is the probability that they will both be a three?
Answer:
2/6 or 1/3 (simplified)
Step-by-step explanation:
each dice has 6 sides and there is one 3 on each die, so you would add 1/6 + 1/6 to get 2/6 which simplifies to 1/3
Answer:
2/12 or 1/6
Step-by-step explanation:
can someone help with just question 3 and 4 i will give brainliest
Alexis traveled 2.3 km to visit her purchase groceries at the supermarket she travels another 600m to get some vitamin C at the pharmacy how much how many meters did Alex to travel in Total?
Answer:
2.9 km
Step-by-step explanation:
Just add up the two distances: 2.3 km + 600 m = 2.3 km + 0.6 km = 2.9 km total
pls help!! TIMED!!!!!!
Answer:
dont know what to do
Step-by-step explanation:
during the fall a pumpkin patch advertises four pumpkin for $11.oo which equation below respresents this proportional relationship
Answer:
11x4=44
Step-by-step explanation:
(Repost because I only got bots last time and I really need help) I’m so lost and we didn’t talk about this at all in my class, please help
The volumes of two similar solids are 512cm^3 and 2,197cm^3. If the smaller solid has a surface area is 960cm^2, find the surface area of the larger solid.
PART I: find the similarity ratio by taking the cube root of each volume. Show your work.
PART II: Use your answer from Part I to find the ratio of the surface areas. Show your work.
PART III: Set up a proportion and solve to find the surface area of a larger solid.
Answer:
2535 cm²
Step-by-step explanation:
Part 1
Cube root the ratio to find the length factor as volume factor = length factor³
∛512 : ∛2197 = 8 : 13
Part 2
Square the ration as area factor = length factor²
8² : 13² = 64 : 169
Part 3
Apply the ratio
64 : 169
960 / 64 = 15
15 x 169 = 2535
solve simultaneously
2 log y=log 2 + log x
2 to power y = 4 to power x
Answer:
Step-by-step explanation:
hello : here is an solution
What is the following difference?
11 inverse 45 -4 inverse 5
I don’t know if this is correct !!!!!!! Please answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!
Answer:
It is correct
All statements of equality below are correct ? Need help!
Answer:
True
Step-by-step explanation:
√784/√4 = 28/2 = 14
Answer:
the answer is true
Step-by-step explanation:
because all are equal 14
16. Is 4/9 a terminating or repeating decimal?
Terminating Decimal
Repeating Decimal
What’s the measure of A?
Answer:
x= 15 and the equation is 3x+5x+4x=180