Answer:
(-3, -7) is a solution
Step-by-step explanation:
3x + 2y = -23
Plug in the point (-3, -7)
It's a solution if it equals -23
3(-3) + 2(-7)
Multiply
-9 + (-14)
Add
-23
Therefor (-3, -7) is a solution
the volume of a rectangular prism is 160 cubic meters the length is 8 meters and the width is 5 meters what is the height?
Answer:
8*5=40
160/40=4
to recheck
V= LxWxH
V=8*5*4
V=160
Step-by-step explanation:
GOOD LUCK
May i have some help please?
Answer:
a+b=5/2a, a+b=5/3b
Step-by-step explanation:
1.2a=0.8b
6/5a=4/5b
6a=4b
b=3/2a, a=2/3b
a+b=3/2a+a
a+b=5/2a
a+b=2/3b+b=5/3b
*WILL GIVE BRAINLIEST*
Subtract. Write your answer in scientific notation.
(9.04×109)–(5.86×109)
Answer:
Step-by-step explanation:
346.62
Answer:
3.4662 times 10^2
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10
. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
In a box there are 6 orange balls, 4 green balls and blue "x" balls. If the probability of drawing one blue ball is 1/3, what is the probability of drawing two blue bags?
Answer:
well you could write this as
1) 0.5/3
2) 1/6
so yeah.
if its 1/3 to get one blue ball, for two you would divide the numerator in half so you'd get 0.5/3
Step-by-step explanation:
I NEED HELP PLS...ASAP
Which equation represents this sentence?
3 times the difference of 6 and a number is equal to 15
3x−6=15
3(6−x)=15
6−3x=15
3(x−6)=15
Answer:
3(6-x)=15
Step-by-step explanation:
A box of cereal advertised their new boxes hold 45% more cereal. The old
boxes held 48 oz, how many oz does the new box hold?
Answer:
69.6 oz
Step-by-step explanation:
So we have to calculate 45% of 48 then add it to 48 to get the the weight of the new box.
(45/100)*48 = 21.6
48+21.6=69.6
Therefore, the weight of the new box is 69.9oz
1 and 2 please - Write the details (what you know)
- Write what the question is asking (what do you want to know)
- Show your work
- Use correct unit labels
Answer:
x≤90 and 30x+20y≥380,000
Step-by-step explanation:
1. x=original price of shoe
"at most" means inequality where the money you can spend is less than or equal to
so x-10≤80
solve for original price
x≤90
2. x=number of floor tix
y=number of bleacher seats
"at least" means bigger than or equal to
30x+20y≥380,000
Show that the function is always increasing
[tex] \sf{f(x) = log(1 + x) - \dfrac{2x}{x + 2}f(x)=log(1+x)−x+22x}\ \textless \ br /\ \textgreater \ [/tex]
ᑎO Տᑭᗩᗰ ᑭᒪᗴᗩՏᗴ
Answer:
Step-by-step explanation:
[tex]\large\underline{\sf{Solution-}}[/tex]
☼︎~Given function is[tex]\rm \: f(x) = log(1 + x) - \dfrac{2x}{x + 2}[/tex]
~Let first define the domain of f(x).
[tex]{ \underline { \underline{ {\rule{200cm}{0.4cm}}}}}[/tex]
Now, log(1 + x) is defined when x + 1 > 0☼︎~Now, Consider[tex]\sf \: f(x) = log(1 + x) - \dfrac{2x}{x + 2}[/tex]
☼︎~On differentiating both sidesw. r. t. x, we get
[tex]\rm {\: \longmapsto\dfrac{d}{dx}f(x) =\dfrac{d}{dx}\bigg[ log(1 + x) - \dfrac{2x}{x + 2}}[/tex]
☼︎~We know,[tex]\boxed{\sf{ \longmapsto\dfrac{d}{dx}logx \: = \: \dfrac{1}{x}}}[/tex]
❀And[tex]\boxed{\sf{\longmapsto \dfrac{d}{dx} \dfrac{u}{v} = \dfrac{v\dfrac{d}{dx}u \: - \: u\dfrac{d}{dx}v}{ {v}^{2} } \: }}[/tex]
~So, using these results, we get
[tex]\sf {\:\longmapsto f'(x) = \dfrac{1}{x + 1} - \dfrac{(x + 2)\dfrac{d}{dx}2x - 2x\dfrac{d}{dx}(x + 2)}{ {(x + 2)}^{2} }}[/tex]
☼︎~We know,[tex]\boxed{\rm{\longmapsto \dfrac{d}{dx}x = \sf \pink{ 1 \:} }} [/tex]
And-
[tex]\begin{gathered}\boxed{\sf{\longmapsto\dfrac{d}{dx}k = 0 \: }} \\ \end{gathered}[/tex]
☼︎~So, using this result, we get
[tex]\rm \: f'(x) = \dfrac{1}{x + 1} - \dfrac{(x + 2)2 - 2x(1 + 0)}{ {(x + 2)}^{2} }f′(x)=x+11−(x+2)2(x+2)2−2x(1+0)
[tex]\rm \: f'(x) = \dfrac{1}{x + 1} - \dfrac{(x + 2)2 - 2x(1 + 0)}{ {(x + 2)}^{2} }f′(x)=x+11−(x+2)2(x+2)2−2x(1+0)\rm \: f'(x) = \dfrac{1}{x + 1} - \dfrac{2x + 4 - 2x}{ {(x + 2)}^{2} }[/tex]
[tex]\rm \: f'(x) = \dfrac{1}{x + 1} - \dfrac{4 }{ {(x + 2)}^{2} }f′(x)=x+11−(x+2)24[/tex]
[tex]\rm \: f'(x) = \dfrac{ {(x + 2)}^{2} - 4(x + 1)}{(x + 1) {(x + 2)}^{2} }[/tex]
[tex]\rm \: f'(x) = \dfrac{ {x}^{2} + 4 + 4x - 4x - 4}{(x + 1) {(x + 2)}^{2} }[/tex]
[tex]\rm \: f'(x) = \dfrac{ {x}^{2} }{(x + 1) {(x + 2)}^{2} }[/tex]
☼︎~Now, as[tex]\longmapsto\rm {\: {x}^{2} \geqslant 0x2⩾0}[/tex]
[tex]\longmapsto\sf\:{(x+2)}^{2} > 0[/tex]
[tex]\longmapsto\sf\: x + 1 > 0x+1>0[/tex]
☼︎~So,[tex]\sf\longmapsto \:\rm \: f'(x) = \dfrac{ {x}^{2} }{(x + 1) {(x + 2)}^{2} } \geqslant 0[/tex]
☼︎~Therefore, f'(x) is always increasing when x > - 1[tex]{ \underline { \underline{ \bold {\rule{200cm}{0.4cm}}}}}[/tex]
Additional Information:-[tex]\boxed{\begin{array}{c|c} \bf f(x) & \tt \dfrac{d}{dx}f(x) \\ \\ \frac{\qquad \qquad}{} & \frac{\qquad \qquad}{} \\ \sf k & \sf 0 \\ \\ \sf sinx & \sf cosx \\ \\ \sf cosx & \sf - \: sinx \\ \\ \sf tanx & \sf {sec}^{2}x \\ \\ \sf cotx & \sf - {cosec}^{2}x \\ \\ \sf secx & \sf secx \: tanx\\ \\ \sf cosecx & \sf - \: cosecx \: cotx\\ \\ \sf \sqrt{x} & \sf \dfrac{1}{2 \sqrt{x} } \\ \\ \sf logx & \sf \dfrac{1}{x}\\ \\ \sf {e}^{x} & \sf {e}^{x} \end{array}}[/tex]
[tex]{ \underline { \underline{ \bold {\rule{200cm}{0.3cm}}}}}[/tex]
If v varies inversely with w and v=18 when w=13, find the equation that relates v and w.
Answer:
v = 234 / w
Step-by-step explanation:
v varies inversely with w
v = k/w
Find the constnt of variation
v = 18 when w = 13
18 = k/13
k = 18 * 13
k = 234
find the equation that relates v and w
v = 234 / w
352 is 125% of…
Bwkssndndndbej
Answer:
281.6
Step-by-step explanation:
=281.6 × 125 %
= 352
Answer:
35.51%, or, if rounded is 36%
Step-by-step explanation:
1. We assume, that the number 352 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 352, so we can write it down as 100%=352.
4. We know, that x% equals 125 of the output value, so we can write it down as x%=125.
5. Now we have two simple equations:
1) 100%=352
2) x%=125
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=352/125
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 125 is what percent of 352
100%/x%=352/125
(100/x)*x=(352/125)*x - we multiply both sides of the equation by x
100=2.816*x - we divide both sides of the equation by (2.816) to get x
100/2.816=x
35.511363636364=x
x=35.511363636364
now we have:
125 is 35.511363636364% of 352
7 pounds of organic cheese costs $40.60. What is the constant of proportionality that relates y the cost of pounds of
organic cheese
5.80
7.15
5.98
40.60
Answer:
5.80
Step-by-step explanation:
it is
40.60/7=5.80
Answer:
5.8
Step-by-step explanation:
Math look at picture
27 because adding then divideing
Simplify these fraction 9 1/3-5 3/4
Answer:
Hiiiiiiii
The answer is 3.58/ 3 7/12
How does fermats last theorem relate to a famous high school math theorem? What is that theorem called?
Question
Find the area of the parallelogram.
Area =
in.²
Answer:
256.5
Step-by-step explanation:
19 · 13.5 = 256.5
I hope this helps
3.3×10 to the power of 7+7.7×10 to the power of 8
Answer:
803000000 is the right answer
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 99% confident that you estimate is within 4% of the true population proportion. How large of a sample size is required?
Show your work please I don't understand this
Given that,
\hat p= 0.5 ( assume 0.5)
1 - \hat p = 1 - 0.5= 0.5
margin of error = E = 4% = 0.04
At 95% confidence level the z is ,
\alpha = 1 - 95% = 1 - 0.95 = 0.05
\alpha / 2 = 0.05 / 2 = 0.025
Z\alpha/2 = Z0.025 = 1.960 ( Using z table )
Sample size = n = (Z\alpha/2 / E)2 * \hat p * (1 - \hat p )
= (1.960 / 0.04)2 * 0.5 * 0.5
= 600.25
Sample size =601
A half-marathon is 13.1 miles long. There is a water station every 1 11/20 miles along the race trail. Which expression represents the total number of water stations?
A) 13.1 - 1 11/120
B) 13.1 + 1 11/120
C) 13.1 (1 11/120)
D) 13.1 ÷ 1 11/120
Answer:
The answer is D
NO LINKS!!!!!!
Write in graphing form x^2 + 10x + y^2 - 6y = 2
9514 1404 393
Answer:
(x +5)^2 +(y -3)^2 = 36
Step-by-step explanation:
Add the squares of half the linear term coefficients, then rewrite using squares. You get the standard form equation of a circle.
x^2 +10x +y^2 -6y = 2
(x^2 +10x +5^2) +(y^2 -6x +(-3)^2) = 2 +5^2 +(-3)^
(x +5)^2 +(y -3)^2 = 36 . . . . . circle centered at (-5, 3) with radius 6
These numbers are multiples of __________.
4, 8, 16, 24
A) 3
B) 4
C) 5
D) 6
please help ! worth 30 points
which is the better by 8-foot of cord for $2.80or 9-foot piece of cord for $2.88
Answer:
9-foot piece is better deal by $0.03 per foot
Step-by-step explanation:
2.80/8 = $0.35 per foot (for 8-foot piece)
2.88/9 = $0.32 per foot (for 9-foot piece)
Answer:
9 foot peice of cord
Step-by-step explanation:
10 is 20% of what i can't figure this out
Answer:
50
Step-by-step explanation:
if the given amount (20%) is 10 then to find the whole :
multiply 10 with 100 and then divide the result with 20
10*100/20 = 50
I need to convert this equation from vertex into standard form.
x^2 = 44(y-12)
I don’t understand the whole leading coefficient thing.
Answer:
If you want to solve x it will be 11
If you want to solve y it will be y
=
x
2
44
+
12
Step-by-step explanation:
what is the reciprocal of 4/9
Answer:
9/4
Step-by-step explanation:
Just flip it upside down
Answer:
It's 9/4.
<3
(something)
Line x and line z are straight lines.
Lines x, z, and y intersect to form 5 angles. From top left, clockwise, the angles are: a: right angle, b, c, d, e.
Which pair of angles are vertical?
Angle a and Angle d
Angle b and Angle d
Angle a and Angle b
Angle c and Angle e
78 points if you answer
Answer:
it is C and E
hope it helps
Answer:
Thepersin above me is correct
Step-by-step explanation:
The function f is one-to-one. Find its inverse. F(x) = 2/x+5
Florida Company (FC) and Minnesota Company (MC) are both service companies. Their stock returns for the past three years were as follows: FC: −5 percent, 15 percent, 20 percent; MC: 8 percent, 8 percent, 20 percent. Calculate the mean return for each company.
Using the mean concept, it is found that:
The mean return for Florida Company is 10%.The mean return for Minnesota Company is 12%.The mean of a data-set is given by the sum of all observations divided by the number of observations.
For Florida Company(FC):
3 returns, of -5%, 15% and 20%.Thus, the mean is:
[tex]M = \frac{-5 + 15 + 20}{3} = \frac{30}{3} = 10[/tex]
The mean return for Florida Company is 10%.
For Minnesota Company(MC):
3 returns, of 8%, 8% and 20%.Thus, the mean is:
[tex]M = \frac{8 + 8 + 20}{3} = \frac{36}{3} = 12[/tex]
The mean return for Minnesota Company is 12%.
A similar problem is given at https://brainly.com/question/13451786
Answer pls will mstk brainliest
Answer:
1 pie
Step-by-step explanation:
1/3 + 1/3 +1/3= 3/3
simplified = 1/1 or 1 whole
Answer:
1 pie
Step-by-step explanation:
1/3 +1/3 + 1/3 =3/3 = 1
If the denominator is the same you can keep it the same and just add the numerators.
Hope this helps:)
Guys please just answer honestly I really need help I’m begging you this is my 4th time re submitting this question today please
Answer:
1) Parallel line: y = 4x + 1
4) Perpendicular line: y = -5x + 9
6) Perpendicular line: y = 3x + 2
Step-by-step explanation:
Note:I will only provide solutions to question 1, 4, and 6, in accordance with Brainly's guidelines. Since the given problem essentially involves the same type of questions, the solutions that I will provide should allow you to apply the same techniques in solving for the remainder of the questions.
Definitions:Parallel lines have the same slope.
Perpendicular lines have negative reciprocal slopes. This means that when you multiply the slopes of two lines that are perpendicular from each other will result in a product of - 1.
In other words, if the slope of a line is m₁, and the slope of the other line is m₂, then it means that they are perpendicular from each other if: m₁ × m₂ = - 1
Solutions:1) y-intercept = 1, parallel to y = 4x - 3.According to the definitions provided on parallel lines, since the given linear equation has a slope, m = 4, then it means that the other line parallel to it must have the same slope.
Given the y-intercept of the other line as b = 1, and its slope, m = 4, then the equation of the line parallel to y = 4x + 3 is:
Equation of Parallel line: y = 4x + 1.
4) y-intercept = 9, perpendicular to y = ⅕x + 4.
Given the linear equation, y = ⅕x + 4, where its slope, m₁ = ⅕
Then it means that the negative reciprocal of ⅕ must be ⇒ [tex]\large\mathsf{-\frac{5}{1}\:\:or\:\:-5}[/tex]
Because: m₁ × m₂ = - 1
⅕ × -5 = -1
Therefore, if the y-intercept of the other line is b = 9, and its slope is m₂ = -5, then the equation of the line perpendicular to y = ⅕x + 4 is:
Perpendicular line: y = -5x + 9.
6) Through point (2, 8) and perpendicular to y = - ⅓x - 8Given the equation of the first line, y = -⅓x - 8, where its slope, m₁ = -⅓.
Then it means that the slope of the other line must be m₂ = [tex]\large\mathsf{\frac{3}{1}\:\:or\:\:3}[/tex] because:
m₁ × m₂ = - 1
-⅓ × 3 = -1
Next, substitute the slope of the other line, m₂ = 3, and the values of the given point, (2, 8) into the slope-intercept form, y = mx + b, in order to solve for the y-intercept of the other line.
y = mx + b
8 = 3(2) + b
8 = 6 + b
Subtract 6 from both sides to isolate b:
8 - 6 = 6 - 6 + b
2 = b
Therefore, the equation of the line perpendicular to y = - ⅓x - 8 is:
Perpendicular line: y = 3x + 2.
Can someone help me is this correct?
Answer:
its incorrect
Step-by-step explanation:
the triangles are congruent as they are the exact same but flipped, so it would be the rule of SAS
