Answers
Answer:B
Step-by-step explanation:
Related Questions
suppose that Y varies directly with X andY equals 12 when X equals -2 what is X when Y equals -6
Answers
Answer:
[tex]x=1[/tex]
Step-by-step explanation:
A direct variation equation has the following format:
[tex]y=kx[/tex]
Where k is a constant.
We know that y is 12 when x is -2. Thus, substitute:
[tex]12=-2k[/tex]
Divide both sides by -2:
[tex]k=-6[/tex]
So, our direct variation equations is:
[tex]y=-6x[/tex]
To find what x is when y equals -6, substitute in -6 for y:
[tex]-6=-6x[/tex]
Divide both sides by -6:
[tex]x=1[/tex]
So, our answer is 1 :)
Can u guys PLEASE answer this question ASAP. A fat cat that was initially 12 kg reduces its weight by 10% each month. How long does it take for the cat to be at least 6 kg lighter than its original weight? Give your answer as a whole number of months.
Answers
Answer:
It takes at least 7 months for the cat to be at least 6 kg lighter than the original weight.
Step-by-step explanation:
Use exponential decay formula:
A = P (1-r)t
A = amount decreased to
P = original amount
r = rate of decrease
t = time
6 ≥ 12 (1-0.10)t divide both sides by 12
0.5 ≥ (0.9)t take log of both sides
log (0.5) ≥ log (0.9)t power rule of logs lets the exponent t drop to front of log to become a factor
log (0.5) ≥ t log(0.9) divide both sides by log(0.9) which is negative so reverse the inequality sign
log (0.5) / log (0.9) ≤ t use calculator
6.57 ≤ t
It takes at least 7 months for the cat to be at least 6 kg lighter that original weight.
check:
12 (0.9)7≈ 5.73
12 (0.9)6 ≈ 6.37
Elisa swim laps in the pool. When she first started, she completed 10 laps in 25 minutes. Now she can finish 12 laps in 24 mins. By how many minutes has she improved her lap time?
Answers
Answer:
I think one minute
Step-by-step explanation:
she can now complete 2 laps in one minute
Mum bought a litre of orange juice. She filled 5 glasses and had 1/5 of a litre left. How much was in each glass?
Answers
1 litre minus 0.2 litres is 0.8 litres so
0.8 divided by 5 (glasses) is 0.16 litres in each glass
what is the answer to this equation -3-6x =9
Answers
Answer: la respuesta es -57
Step-by-step explanation:
Answer:
-57 and sorry if wrong
Step-by-step explanation:
look at image. reflection across y= -1
Answers
Answer:
Y 2,1 X 0,1 W 0,4 Z 3,5 will be the new reflected points
Step-by-step explanation:
Simplify the following numerical expression as much as possible: 53*25= ?
Answers
Answer:
1325
Step-by-step explanation:
53 * 25 =
Break it apart to solve without a calculator
5 * 25 = 125 and we add a 0 because it's 50 * 25 so 1250
now multiply 3 * 25 = 75
Add them
1250 + 75 = 1325
You can't simplify further.
Answer:
1325
Step-by-step explanation:
53 * 25 = 1325
That's as simple as you can get
Help asap plsssss:(((
Answers
Answer:
84
Step-by-step explanation:
Answer:
84
Step-by-step explanation:
Given
(- 6)(- 2x - 4y) , substitute x = 1, y = 3 into the expression
= (- 6)(- 2(1) - 4(3) )
= (- 6)(- 2 - 12)
= (- 6)(- 14)
= - 6 × - 14
= 84
30 POINTS!!!!!
Evaluate the expression for the given values...
Answers
Answer:
4.) -3x² - 5x + 7
- 3 * -2 * -3 * -2
+6 * +6 - 5 * -2
36 - (+10)
36 - 10 = 26
5.) 3x² - 7y²
3 * x X 3 * x - 7 * y X 7 * y
3 * 2 X 3 * 2 - 7 * 3 X 7 * 3
6 * 6 - 21 * 21
36 - 441 = -405
6.) 4(x - 2y)
________
x + y
4 * x - 4 * 2 X y
_____________
x + y
4 * 4 - 4 * 2 X -2
16 - (+16)
16 - 16 = 0
7. π + x√3y
22/7 + -3√15
3094
_____
22/7 + -11
5000
2380
= -8 ______
5000
Step-by-step explanation:
Please mark me as brainliest
Aliyah wants to estimate the value of the quotient of 5.68 x 10- and 8.54 x 10 Which statement about the value is true?
The value will be greater than 1 because (-3)+(-9) is a positive number. A number in scientific notation with a
positive exponent has a value greater than 1.
The value will be greater than 1 because (-3)-(-9) - 6. A number in scientific notation with a positive exponent is
greater than 1.
The value will be less than 1 because 5.88 - 8.54 is less than 1. The negative exponents will make it even smaller.
The number will be less than 1 because 5.68 x 10- is a very small number and division always makes the size of a
number smaller.
Answers
Answer:
B-The value will be greater than 1 because (negative 3) minus (negative 9) = 6. A number in scientific notation with a positive exponent is greater than 1.
Step-by-step explanation:
I hope I was helpful :)
Pam bought a stereo for $700 and made 36 payments of $26.32. How much
did she pay in interest?
Best answer gets brainliest
Answers
Answer:
$247.52
Step-by-step explanation:
36 x 26.32 = 947.52
947.52 - 700= 247.52
40 percent in to fraction decmal
Answers
Answer:
0.4 hope this helps
Step-by-step explanation:
Answer:
Well 40 percent is 2/5 as a fraction and 2/5 as a decimal is 0.4
Step-by-step explanation:
please help me i rlly need it, thank you
Answers
• Answer:
x = 2
• Step-by-step explanation:
AB = AC/2 = 16/2 = 8
AB = 2x + 4
8 = 2x + 4
2x = 8 - 4
2x = 4
x = 4 : 2
x = 2
If 5y + 2 = 8/3, what is the value of 5y - 6?
Answers
Answer:
5y - 6 = (-16)/3
Step-by-step explanation:
1. Step:
Solve for y:
5 y + 2 = 8/3
Subtract 2 from both sides:
5 y + (2 - 2) = 8/3 - 2
2 - 2 = 0:
5 y = 8/3 - 2
Put 8/3 - 2 over the common denominator 3. 8/3 - 2 = 8/3 + (3 (-2))/3:
5 y = 8/3 - (2×3)/3
3 (-2) = -6:
5 y = 8/3 + (-6)/3
8/3 - 6/3 = (8 - 6)/3:
5 y = (8 - 6)/3
8 - 6 = 2:
5 y = 2/3
Divide both sides by 5:
y = (2/5)/3
3×5 = 15:
Answer: y = 2/15
2. Step.
Evaluate 5 y - 6 where y = 2/15:
5 y - 6 = 5×2/15 - 6
5×2/15 = (5×2)/15:
(5×2)/15 - 6
5/15 = 5/(5×3) = 1/3:
2/3 - 6
Put 2/3 - 6 over the common denominator 3. 2/3 - 6 = 2/3 + (3 (-6))/3:
2/3 - (6×3)/3
3 (-6) = -18:
2/3 + (-18)/3
2/3 - 18/3 = (2 - 18)/3:
(2 - 18)/3
2 - 18 = -(18 - 2):
(-(18 - 2))/3
| 1 | 8
- | | 2
| 1 | 6:
Answer: (-16)/3
Solve -2.4x + 3.8x- x
Answers
Answer:
Step-by-step explanation:
1.4x - x = 0.4x
plz solve this question immediately
Answers
squaring both sides
cos2+sin2+2cossin=1
cos
2
A
+
sin
2
A
+
2
cos
A
sin
A
=
1
⟹1+2cossin=1⟹2cossin=0
⟹
1
+
2
cos
A
sin
A
=
1
⟹
2
cos
A
sin
A
=
0
⟹−2cossin=0⟹1−2cossin=1
⟹
−
2
cos
A
sin
A
=
0
⟹
1
−
2
cos
A
sin
A
=
1
⟹cos2+sin2−2cossin=1
⟹
cos
2
A
+
sin
2
A
−
2
cos
A
sin
A
=
1
⟹(cos−sin2)=1
⟹
(
cos
A
−
sin
A
2
)
=
1
⟹cos−sin=±1
Pls helppppppppppp will mark brainliest
Answers
Answer:
Hence, the distance of a point P(x,y) from the origin is √(x)^2 + (y)^2.
PLEASE HELP!!! One step equation... solve by division b/7=5
Answers
Answer:
b = 35
Step-by-step explanation:
[tex]\frac{b}{7} =5\\Multiply\: through\: by\: 7\\\\7(\frac{b}{7} ) =5\times 7\\\\b = 35[/tex]
Answer:
multiply both side of the equation by 7.
7 x b/7 = 7 x 5
cancel common factor of 7
b = 7 x 5
b = 35
let x = 4, Evaluate 3x+4x2-8
Answers
Answer:
12
Step-by-step explanation:
A seagull is floating on the surface of the ocean when it takes off and flies upward at a rate of 4 ft per second. After 19 seconds, how far away from the surface of the water will the seagull be?
Answers
Answer:
d = 76 m
Step-by-step explanation:
It is given that, the speed of 4 ft per second when it takes off and flies upward
We need to find how far away from the surface of the water will the seagull be after 9 seconds.
Speed is distance over time.
So,
Distance, d = vt
d=4 ft/s × 19 s
d=76 meters
So, the seagull will be at a distance of 76 m from the surface of water.
Mitchell works at the local movie theater. He currently has $395 in his
savings account and he plans to deposit $30 in his account every week.
Define the variable and write an algebraic expression to show how much
money Mitchell will have in his account after any number of weeks.
Answers
Answer: 395+30x
Step-by-step explanation:
Given : Mitchell has $395 now.
He saved $30 each week.
Let x be a variable that represents the number of weeks.
Since, Total amount = Current money + (Money save each week ) (Number of weeks)
Then, Total amount = (395 ) + (30)(x)
= 395+30x
Hence, the required algebraic expression= 395+30x
An algebraic expression is a mathematical expression consisting a variable (a,b,c,..) which can be manipulated .
simplify 4+3(7+4 x 2)-100
Solve this
Answers
4+3(7+8)-100
4+3(15)-100
4+45-100=
-51
(7+4x2) = 15
4+3+15-100= -51
ANSWER IS -51
is negative pi 17 a natural number
Answers
Answer:
No.
Step-by-step explanation:
π is a irrational number; therefore, π × 17 is also irrational number.
Choose all of the expressions that are equal to −9. the opposite of nine −|9| |−9| −|−9| −(−9) the distance from zero to nine
Answers
Answer:
−|9| = -9
−|−9| = -9
Step-by-step explanation:
−|9| = -9
|−9| = 9
−|−9| = -9
−(−9) = 9
Simplify 3(5x + 9 - 4x)
Answers
3x+28
Hope this helps
3 3/4 + 4 1/8 . I need it wrote down so i can copy it
Answers
Answer:
7 7/8
Step-by-step explanation:
Convert the mixed numbers to improper fractions, then find the LCD and combine.
Exact Form:
63/8
Decimal Form:
7.875
Mixed Number Form:
7 7/8
Name all rays ,point and line segment
Answers
Answer:
ratious and axuas
Step-by-step explanation:
Answer:
S & Q are points
R is a ray
SR & RQ are line segments
Step-by-step explanation:
Please help I will give out brainliest
Answers
Answer:
upper bound = 112.5
lower bound = 111.5
Step-by-step explanation:
x = 360 - 59 - 108 - 81
x = 112°
upper bound = 112.5 < 113
lower bound = 111.5 < 112
so
L.B. U.B.
111.5 < 112 < 112.5
Answer:
upper bound = 112.5
lower bound = 111.5
Step-by-step explanation:
x = 360 - 59 - 108 - 81
x = 112°
upper bound = 112.5 < 113
lower bound = 111.5 < 112
so
L.B. U.B.
111.5 < 112 < 112.5
someone please help!
Answers
g (f(-3)) = -6 is your answer
10² - (-10)² - (-10)²
Answers
Answer:
-100 (10*10)- (-10*-10) - (10*10)
Step-by-step explanation: