if there are 250 fish in the lake and 50 more are added each year, write a linear equation
Please help 10 pts!!
Answer: Any positive number less than 16
The diagram shows AD = 16. Applying a dilation with positive scale factor less than 1, will make the figure shrink. Segment AD becomes smaller, so the new AD will be some length less than 16.
For instance, if you use a scale factor 1/2 = 0.5, then AD = 16 turns into A'D' = 16*0.5 = 8
29 of the first 42 presidents of the United States were lawyers. What percentage of these presidents were lawyers? (Give answer to nearest 1%) Show work
Answer:
62
Step-by-step explanation:
divide 29 by 42 and multiply the answer by 100
Answer: 69.05%
Step-by-step explanation:
21=50%
10.5=25%
what two numbers' sum=-4 and product=-2
Let a and b be the two numbers. Then
a + b = -4
a b = -2
Solve the second equation for b :
b = -2/a
Substitute this into the first equation:
a - 2/a = -4
Multiply both sides by a :
a² - 2 = -4a
Move 4a to the left side:
a² + 4a - 2 = 0
Use the quadratic formula to solve for a :
a = (-4 ± √(4² - 4(-2))) / 2
a = -2 ± √6
If a = -2 + √6, then
-2 + √6 + b = -4
b = -2 - √6
In the other case, we end up with the same numbers, but a and b are swapped.
I need help with number 21 please help!!!
Answer:
This is not a direct variation.Step-by-step explanation:
Direct variation:
mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other.
(y varies directly with x with a constant variation of k)
[tex]y=kx;\ k\neq0[/tex]
[tex]y=kx\qquad|\text{divide both sides by}\ x\\\\\dfrac{y}{x}=k\Rightarrow \dfrac{y}{x}=constant[/tex]
[tex]21.\\\\x=y+2\qquad|\text{subtract 2 from both sides}\\\\x-2=y\qquad|\text{divide both sides by}\ x\\\\1-\dfrac{2}{x}=\dfrac{y}{x}\ro\dfrac{y}{x}=1-\dfrac{2}{x}\neq constant[/tex]
what is the quotient of -0.05 ÷ -5/16
Answer:
Step-by-step explanation:
-0.05 you will multiply with reversal of -5/16
-0.05 x (-16/5)= 0.01x16=0.16
Building A is 400 feet tall and Building B is 300 feet tall. Johnny is standing in between the two building. The angle of elevation from the point on the ground where Johnny is standing is 70 degrees to the top of Building A and 52 degrees to the top of Building B. How far apart are the two buildings
Answer:
389 feets apart
Step-by-step explanation:
Given that:
Building A
Height = 400feets
Angle of elevation = 70°
Building B:
Height = 300 feets
Angle of elevation = 52°
Distance from the foot of building A to where Jonny is standing = x (see attached picture)
Using trigonometry :
Tanθ = opposite / Adjacent
Tan 70 = 400/ x
2.7474774x = 400
x = 145.58809 feets
Distance from the foot of building B to where Jonny is standing = y (see attached picture)
Using trigonometry :
Tanθ = opposite / Adjacent
Tan 52 = 300/ y
1.2799416y = 300
y = 145.59
y = 234.38568 feets
x + y = distance between the two buildings
(145.58809 + 234.38568) feets
= 379.97377
= 380 feets apart
amanda had to pay sales tax on a new iphone case she purchased last week. The iphone case was 35.00 and she pid 2.45 in taxes, what percent of the original price did she pay in taxes?
HELP
Answer:
7%
Step-by-step explanation:
[tex]\frac{2.45}{35} = \frac{x}{100}[/tex]
[tex]2.45*100[/tex] and [tex]35x[/tex]
[tex]\frac{245}{35} = \frac{35x}{35}[/tex]
[tex]245/35=7[/tex]
If Tamair has $100 & gives $40 to her best friend Tsion, but Tsion gives $20 to Tamair, how much money does Tamair have left?
A) 90
B) 80
C) Tamair is broke
D) Tsion is broke
Answer:
B) 80
Step-by-step explanation:
Thats my bestie so dont mess with her or its gonna be a problem
What is c?
1.51=c10
c = can someone explain I'm a little confused >
Answer:
0.151
Step-by-step explanation:
1.51=c10
we divide 10 by both sides
1.51/10 = c10/10
we cancel 10/10 and 1.51/10=0.151
so
c=0.151
tell me if u need a more clear explanation
Answer: 15 hope this help's and if not please give a bad rating
how do u do this im confused
Answer:
Line one answers: -x^2. 2x^2. 0. 5x^2
Line two answers: -x^2. 12x^2. -2x^2. 8x^2
Line three answers: 4x^2. 8x^2. -x^2. x^2
Step-by-step explanation:
Answer:
-x^2. 2x^2. 0. 5x^2
-x^2. 12x^2. -2x^2. 8x^2
4x^2. 8x^2. -x^2. x^2
Step-by-step explanation:
:P HELLLP what is (13x20)5+6 = ___ - 1/3.
Answer: 1304.7
Step-by-step explanation: just took test
A family is calculating the cost for one semester of college next year. Each hour of class will cost $155. A scholarship gift of $64 can be deducted from costs. If h is the number of hours taken, and c is the total cost, which equation can be used to calculate the total tuition costs for a semester?
C=89h
C=155h+64
C=155h-64
C=-155h-64
Answer:
c=155h-64
Step-by-step explanation:
you mulitply the cost of the classes by the amount of hours, then you deduct the scholarship gift(64) from the total and get your total cost of the semester
How much is 2% of 3.50
Answer:
.07
Step-by-step explanation:
3.50 * 2% = .07
or
3.50 * .02 = .07
If a quadratic equation has no real solutions, is it still a function? I don't seem to know why
Answer:
That’s interesting I would figure isn’t a function because the point of a function is to find the solution but if there is no solu then it has lost its purpose.
Find The Angle (See Image)
Answer:
do you how many there is 5 angles if thats what ur asking
Step-by-step explanation:
8a x 2b ÷ 4c =
(I don't get it)
Answer:
The solution of the given equation is not possible. Because different variables never multiply or divide
Two tailors, Valentina and Laura, sit down to do some embroidery. Valentina can embroider 2 shirts per hour, and Laura can get through 3 shirts per hour. In addition, the tailors had previously finished some shirts. Valentina has already completed 15 shirts, and Laura has completed 11 shirts. Valentina and Laura decide to take a break when they have finished the same total number of shirts. How many shirts, in total, will each tailor have finished? How long will that take?
Answer:
Valentina and Laura finished the same total number of shirts in [tex]4[/tex] hours.
Total number of shirts finished by Valentina [tex]=23[/tex]
Total number of shirts finished by Laura [tex]=23[/tex]
Step-by-step explanation:
Suppose that Valentina and Laura finished the same total number of shirts in [tex]t[/tex] hours.
Valentina can embroider 2 shirts per hour and Valentina has already completed 15 shirts.
Total number of shirts finished by Valentina [tex]=2t+15[/tex]
Laura can get through 3 shirts per hour and Laura has completed 11 shirts.
Total number of shirts finished by Laura [tex]=3t+11[/tex]
Therefore,
[tex]2t+15=3t+11\\3t-2t=15-11\\t=4[/tex]
So,
Valentina and Laura finished the same total number of shirts in [tex]4[/tex] hours.
Total number of shirts finished by Valentina [tex]=2(4)+15=8+15=23[/tex]
Total number of shirts finished by Laura [tex]=3(4)+11=12+11=23[/tex]
For nitrogen to be a liquid, its temperature must be within 12.78 °F of –333.22 °F. Which equation can be used to find the maximum and minimum temperatures at which nitrogen is a liquid, x?
The equation that can be used to find the maximum and minimum temperatures is
Answer:
For nitrogen to be a liquid, its temperature must be within 12.78 °F of -333.22 °F. The equation |x + 333.22 | = 12.78 can be used to find x, which represents the maximum and minimum temperatures at which nitrogen is a liquid.
Hope this helps! :D
What is the equation of the line that passes through the point (-4,-6)(−4,−6) and has an undefined slope?
Answer:
x = -4
Step-by-step explanation:
there is no y-intercept when slope is undefined
Undefined slope indicates a vertical line passing through the x-axis at the x-coordinate of any known point
In ΔIJK, ∠K ≅∠J, IJ = 9 and JK = 10. Find the length of KI.
Answer:
KI = 9
Step-by-step explanation:
In ΔIJK,
∠K ≅∠J (given)
Therefore,
IJ ≅ KI (sides opposite to equal angles are equal)
Since,
IJ = 9
So,
KI = 9
Mr Sanchez brought in 2 magazines for 9.95
Answer:
good for Mr. Sanchezbut thats a bit expensive ya know?????/
Step-by-step explanation:
Please help me solve these problems! I'll give you all my brain points. IM DESPERATE!!!
:-;
Answer: kg
Step-by-step explanation:
what is the greatest common factor between 20 and 25
Answer:
5
Step-by-step explanation:
Express 0.495 in standard form
Answer:
4.95 x 10^-1
Step-by-step explanation:
4.95 x 10^-1
Find the equation of a line that passes through the points (-1,3) and (3,5). Leave your answer in the form y = m x + c
Answer:
⇒
y
=
−
2
x
+
13
Explanation:
You can use point-slope form to determine the slope
m
:
y
2
−
y
1
=
m
(
x
2
−
x
1
)
Given:
⇒
p
1
=
(
x
1
,
y
1
)
=
(
3
,
7
)
⇒
p
2
=
(
x
2
,
y
2
)
=
5,3)
Finding the slope:
3−7=m(5−3)−4=2m⇒m=−2
Step-by-step explanation:
You have 33 math and science problems for homework. You have 7 more math problems than science problems. How many problems do you have in each subject?
For this question type the two equations that you are using and your solution to the system.
Answer:
x=33/7 m=7+x
Step-by-step explanation:
33 divided by 7 is 5 (when rounded) then you add 5 to 7 and get 12. Hope this helped yu!! Give brainliest.
Answer:
x=33/7 m=7+x
Step-by-step explanation:
so if you divide 33 by 7 you get 4.71428571429 which would be 5 when rounded and then you add 5 to 7 to get 12 I HOPE THIS HELLPEEDD
Expand the expression 2(y + 5x)
Answer:
2y+10x
Step-by-step explanation:
distribute the 2 into the rest of the equation
The body mass of a bird?
A) categorical
B)Discrete
C)continuous
Answer:
Categorical
Step-by-step explanation:
3x −4 = 11 what is the answer
Answer:
x=5
Step-by-step explanation:
Answer:
the answer is x=5