Answer:
20°
Step-by-step explanation:
4x+40+3x=180
7x=180-40
7x=140
x =20°
Jill is swimming laps in a pool. The table shows how the total distance she swims depends on the number of laps she does.
Number of Laps - Total Distance (Meters)
5 250
10 500
15 ?
20 1,000
25 1,250
A. 50
B. 75
C. 550
D. 750
Answer:
the expression b/c=b/c is an example of a/an
What is the solution to the equation? a+5 2/3=9
Answer:
a=8+1/2
Step-by-step explanation:
We move all terms to the left:
(a+5)2/3-(9)=0
We multiply all the terms by the denominator
(a+5)2-9*3=0
We add all the numbers together, and all the variables
(a+5)2-27=0
We multiply parentheses
2a+10-27=0
We add all the numbers together, and all the variables
2a-17=0
We move all terms containing a to the left, all other terms to the right
2a=17
a=17/2
a=8+1/2
In the figure below, find the exact value of z. (do not approximate answer.)
Answer:
z = [tex]\sqrt{10}[/tex]
Step-by-step explanation:
Small triangle:
short leg = 2
long leg = z
Large triangle
short leg = z
long leg = 5
-------------------------
The triangles are similar therefor
Sshort / Lshort = Slong / Llong
2/z = z/5
multiply both sides by z
2 = [tex]z^{2}[/tex]/5
multiply both sides by 5
10 = [tex]z^{2}[/tex]
Take the square root of both sides
z = [tex]\sqrt{10}[/tex]
Review the graph of a piecewise function. On a coordinate plane, a line starts at open circle (0, negative 1) and goes to open circle (negative 2, negative 3). It then curves up through (negative 5, 2). A curve starts at closed circle (0, 3) and curves down and approaches x = 1 into quadrant 4. Another curve starts at closed circle (2, 3) and curves down and approaches x = 1 in quadrant 4. A horizontal line goes from closed circle (2, 3) to (5, 3). Which list represents all values of x for which the function has a discontinuity? 1 0 and 1 –2 and 1 –2, 0, and 1
Answer:
A
Step-by-step explanation:
It is
Answer:
a
Step-by-step explanation:
A box holds 30 tins How many boxes can be filled
with 810 tins
What is the simplest form x^2-16/x^2+5x+4fied form of
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Answer:
(x -4)(x +1)
Step-by-step explanation:
[tex]\dfrac{x^2-16}{x^2+5x+4}=\dfrac{(x+4)(x-4)}{(x+4)(x+1)}=\boxed{\dfrac{x-4}{x+1}}\qquad x\ne-4[/tex]
The simplified form comes with a domain restriction corresponding to the hole in the function where the original denominator is zero.
HELPPP!!! 50 POINTS!!!
quadratic roots are also called ___,___,___.
3 things!!!
Answer:
solutions, x-intercepts, and zeroes
Step-by-step explanation:
Solutions are values that satisfy the equation. X-intercepts are values of x that the graph of the equation passes through the x-axis.
Zeroes are x values that are resulted from y=0
Help me please I will give brainleist
Answer:
? = 7x
Step-by-step explanation:
Lets simplify the equation first;
5x - 20 + ? = -20 + 12x
=> So now, we have to make the equation on the left equation congruent to the right equation:
It we already have -20 common on both sides, but we need to find out, what added by 5x gives us 12x,
=> So we can let the number we have to find out be y, and say:
5x + y = 12x
=> y = 12x - 5x
=> y = 7x
Therefore, ? = 7x
Hope this helps!
A finite sequence of numbers is called AWESOME if each subsequent member of the sequence, except the first one, is larger than the previous one and if the
product of all the members of that sequence is a perfect square. For example, sequence 2, 6, 27 is an AWESOME sequence. Determine the natural numbers x and y such that the sequence 28, x, y, 65 is an AWESOME sequence.
Answer:
The answer is "28, 35, 52, 65"
Step-by-step explanation:
Calculating the x,y:
[tex]\to x< y<65\\\\\to 65 \times 28 xy=13 \times 5xy \times 7 \times 2^2\\\\x=13 \\\\y=5 \times 7= 35\\\\[/tex]
When
or
[tex]x=35\\\\y= 13 \times 2^2=13 \times 4 =52[/tex]
So, the final answer is "28, 35, 52, 65".
If the height is 24, solve for x. h=-16x^2+8x+48
Answer:
x=
32
7+
3121
,
32
7−
3121
Step-by-step explanation:
h+16^2-8x-48=0
-7x+16x^2-48=0
x=
32
7+
3121
,
32
7−
3121
Which of the following is true statement?
Answer:
B
Step-by-step explanation:
I think
Please help me this is for a test. Thank you so much whoever answers this.
Answer: Pretty sure the answer is 3.
Step-by-step explanation:
[tex]\frac{2(4+7)-7}{5}[/tex]
[tex]\frac{2(11)-7}{5}[/tex]
[tex]\frac{22-7}{5}[/tex]
[tex]\frac{15}{5}[/tex]
One evening the temperature was -7°C.
By midnight the temperature had dropped by 5°C.
What was the temperature at midnight?
Answer:
The answer us -12°
Step-by-step explanation:
-7°-5°=-12°
5 points
A circle has a radius of 3 inches. What is the length, in inches, of an arc intercepted by a central angle of 2 radians?
Answer:
7.5in
Step-by-step explanation:
A culture of the bacterium Salmonella enteritidis initially contains 50 cells. When introduced into a nutrient broth, the culture grows at a rate proportional to its size. After 1.5 hours, the population has increased to 775. (a) Find an expression for the number of bacteria after t hours. (Round your numeric values to four decimal places.)
Answer:
The expression for the number of bacteria after t hours is [tex]P(t) = 50e^{0.2922t}[/tex]
Step-by-step explanation:
When introduced into a nutrient broth, the culture grows at a rate proportional to its size.
This means that the size of the population, after t hours, is modeled by the following differential equation:
[tex]\frac{dP}{dt} = rP[/tex]
In which R is the growth rate.
The solution of this differential equation is:
[tex]P(t) = P(0)e^{rt}[/tex]
In which P(0) is the initial population.
A culture of the bacterium Salmonella enteritidis initially contains 50 cells.
This means that [tex]P(0) = 50[/tex], and so:
[tex]P(t) = P(0)e^{rt}[/tex]
[tex]P(t) = 50e^{rt}[/tex]
After 1.5 hours, the population has increased to 775.
This means that [tex]P(1.5) = 775[/tex]. We use this to find r. So
[tex]P(t) = P(0)e^{rt}[/tex]
[tex]500e^{1.5r} = 775[/tex]
[tex]e^{1.5r} = \frac{775}{500}[/tex]
[tex]\ln{e^{1.5r}} = \ln{\frac{775}{500}}[/tex]
[tex]1.5r = \ln{\frac{775}{500}}[/tex]
[tex]r = \frac{\ln{\frac{775}{500}}}{1.5}[/tex]
[tex]r = 0.2922[/tex]
The expression is:
[tex]P(t) = 50e^{rt}[/tex]
[tex]P(t) = 50e^{0.2922t}[/tex]
The expression for the number of bacteria after t hours is [tex]P(t) = 50e^{0.2922t}[/tex]
/d/e/1FAIpQLSclFkZlgkRij_Rf2abUD8YgyQtKMgZR65VhFeEjQ96N34Edog/formResponse
Question 1
1 point
1. Which inequality matches the description: The Movie Studio Cinema has
a maximum capacity of 1350 visitors (x).
Answer:
Assuming you mean on a number line.
Answer:
x <(with a underline) 1350
Step-by-step explanation:
Does not day more than or less than.
Help please i need ASAP
[tex]h \: is \: correct \: answer \: \\ if \: you \: put \: (0 \: t4) \: and \: (1 \: 6)you \: can \: find \: the \: answer[/tex]
What is the value of (-1/2)⁻⁴?
-16
-1/16
1/16
16
Answer:
16
Step-by-step explanation:
-2^4=16
what is and application that process data into meaningful information is
Answer:
Data processing is a process of converting raw facts or data into a meaningful information. Data can be done manually using a pen and paper, mechanically using simple devices eg. typewritter or electronically using modern dat processing toolseg computers.
Step-by-step explanation:
Two sixth-grade classes, A and B, voted on whether
to give the answers to their math problems in poetry.
The "yes" choice was more popular in both classes.
class A - 24 yes , 16 no
class B 18 yes , 9 no
i know the percent of class a but not b
class A - 60/100
class B - ???????
A y= 2x - 10
B y= 1/2 x + 10
C y= 1/2x -10
D y= 2x + 10
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Answer:
D. y= 2x + 10
Step-by-step explanation:
Try x=3 in the equations and see which one works.
A: 2·3 -10 = -6 ≠ 16
B: 1/2(3) +10 = 11.5 ≠ 16
C: 1/2(3) -10 = -8.5 ≠ 16
D: 2(3) +10 = 16 . . . . . . this equation works
Which of the following statements must be true about this diagram?
Answer:
A, C, D
Step-by-step explanation:
A, C, D
Help pls I hacer 5 mins
Answer:
12.7 is the answer
Answer: 12.7
Step-by-step explanation:
If you like to round 12.654 to the nearest tenth, leaving only one number after the decimal point, then you have come to the right post
Please help thank you
Answer:
x =14
<A = 7x -11 = 87
<B = 2x-3 = 25
<C = 5x -2 = 68
Step-by-step explanation:
The sum of the angles add to 180
7x -11 + 2x-3 + 5x-2 = 180
Combine like terms
7x +2x+5x -11-3-2 =180
14x-16=180
Add 16 to each side
14x-16+16 =180+16
14x = 196
Divide each side by 14
14x/14 =196/14
x =14
<A = 7x -11 = 7*14 -11 = 98-11 = 87
<B = 2x-3 = 2*14 -3 = 28-3 = 25
<C = 5x -2 = 5*14 -2 = 70-2 = 68
How many glasses can be filled from a 6-pint pitcher if each glass holds one seventh of a pint?
Answer:
[tex] = 6 \div \frac{1}{7} \\ = 6 \times \frac{7}{1} \\ = 42 \: glasses[/tex]
Answer:
same thing as the person show u
Step-by-step explanation:
i do flvs ok du and that is the right anser
Stella is running a bakery. She has made a street sign to direct people to her
bakery. She painted one side of the post and sign. What is the painted area?
12 in
12 in 13
4 in
75 in
8 in
A. 792 square inches
B. 768 square inches
C. 648 square inches
Answer:
ok its 768 thank me later
Step-by-step explanation:
3.
Given: RS bisects PQ at T, PQ bisects RS at T.
Prove: PTS = QTR.
Answer:
Step-by-step explanation:
RS Bisects PQ at T Given
PQ bisects RS at T Given
<RTQ = <PTS Vertically opposite Angles
PT = TQ Result of the given bisection
RT = TS Result of the given Bisection
ΔPTS ≡ ΔRTQ SAS. Note that the vertically opposite angles are between the two equal sets of lines.
You have 2 piggy banks. Both contain c coins. You have 86 coins in all. How many coins are in each piggy bank?
Answer:
43 coins in each piggy bank
Step-by-step explanation:
well half of 86 os 43
because 43+43=86
Answer:
43
Step-by-step explanation:
i know my dang brainly
Helppppp plsssss I will do anything I need to pass this text
Answer:
(1,1) is the answer
Explanation:
Both lines cross at (1,1)
Two parallel lines are cut by a transversal as shown below.
Answer:
52 both
Step-by-step explanation:
4 is 128. flat surface is 180, 180-128= 52. 4 and 2 are equal, 1 and 3 too. So are 5=7 8=6