Answer:
B
Step-by-step explanation:
cause i said so
Someone please help me with this
Your distance from lightning varies directly with the time it takes you to hear thunder. If you hear thunder 10
seconds after you see the lightning, you are about 2 miles from the lightning.
a. Write a direct variation equation for the relationship between time and distance.
b. Estimate how many seconds it would take for the thunder to travel a distance of 4 miles.
Answer:
[tex]a.\ D=\dfrac{1}{5}t[/tex]
b. 20 seconds
Step-by-step explanation:
Let [tex]D[/tex] be the distance in miles and
[tex]t[/tex] be the time in seconds and
[tex]s[/tex] be the speed in miles/sec
Formula for Distance is given as:
[tex]Distance = Speed \times Time\\OR\\D=st[/tex]
Given that:
Distance = 2 miles and
Time = 10 seconds
Putting the values in formula:
[tex]2=s\times 10\\\Rightarrow s =\dfrac{1}{5} \ miles/sec[/tex]
Answer a:
Putting the value of [tex]s[/tex] back in the formula to find the direct variation equation for the relationship between time and distance:
[tex]D=\dfrac{1}{5}t[/tex]
Answer b:
Using the above formula and putting [tex]D=4\ miles[/tex]:
[tex]4=\dfrac{1}{5}t\\\Rightarrow t =\bold{20\ seconds}[/tex]
Numbers equivalent to 15 divided 12
[tex]{Hello!\;your\;answer\;is>>>}[/tex] [tex]\huge\boxed{1.25}[/tex]
[tex]We\;have\;the\;equation\;below...[/tex]
[tex]\boxed{15\;Divided\;By\;12=\;(?)}[/tex]
[tex]The\;number\;equal\;to\;this\;is\;\boxed{1.25}[/tex]
[tex]\boxed{Hope\;i\;helped!}[/tex]
Number equivalent to 15/12 is 1.25 .
Given,
15 divided 12
Using division property,
The rules for division are:
(1) positive × or ÷ positive = positive
(2) positive × or ÷ negative = negative
(3) negative × or ÷ negative = positive
Rule for long division method,
Divide the tens column dividend by the divisor.
Multiply the divisor by the quotient in the tens place column.
Subtract the product from the divisor.
Bring down the dividend in the ones column and repeat.
Therefore,
divide, multiply, subtract, bring down and repeat or find the remainder.
Here the required value is of :
15/12
=5/4
= 1.25
Hence the answer is 1.25
Know more about division,
https://brainly.com/question/28281492
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Please help me quick!!
Jenny earns $30 a day working part time at a supermarket. She also earns $12 per hour for
babysitting. How much money does she earn from herTWO DIFFERENT JOBS? (Hint: Use two different
variables)
Answer: how many hours is she working
Step-by-step explanation:
evulate a^2 - b^2 if a=4 and b= -2
Answer:
20
Step-by-step explanation:
4^2 = 16
-2^2 =-4
16 -(-4) =20
Pllzzzzz i need help im in a dca helppp
15. What is the value of x in the figure bellow?
Answer:
x=22.5
Step-by-step explanation:
Which equation has solution x = -3?
A) 2x - 7 = -1
B) 3x + 8 = 1
C) 1/2x+8=10
D) 1/2(2x-6)=-6
Answer:
D) 1/2(2x-6)=-6 = x = -3
Step-by-step explanation:
A. x = 3
B. x = 7/3
C. x = 4
D. x = -3
Solve for x:
(2 x - 6)/2 = -6
Hint: | Multiply both sides by a constant to simplify the equation.
Multiply both sides of (2 x - 6)/2 = -6 by 2:
(2 (2 x - 6))/2 = -6×2
Hint: | Cancel common terms in the numerator and denominator of (2 (2 x - 6))/2.
(2 (2 x - 6))/2 = 2/2×(2 x - 6) = 2 x - 6:
2 x - 6 = -6×2
Hint: | Multiply 2 and -6 together.
2 (-6) = -12:
2 x - 6 = -12
Hint: | Isolate terms with x to the left hand side.
Add 6 to both sides:
2 x + (6 - 6) = 6 - 12
Hint: | Look for the difference of two identical terms.
6 - 6 = 0:
2 x = 6 - 12
Hint: | Evaluate 6 - 12.
6 - 12 = -6:
2 x = -6
Hint: | Divide both sides by a constant to simplify the equation.
Divide both sides of 2 x = -6 by 2:
(2 x)/2 = (-6)/2
Hint: | Any nonzero number divided by itself is one.
2/2 = 1:
x = (-6)/2
Hint: | Reduce (-6)/2 to lowest terms. Start by finding the GCD of -6 and 2.
The gcd of -6 and 2 is 2, so (-6)/2 = (2 (-3))/(2×1) = 2/2×-3 = -3:
Answer: x = -3
solve each equation for x:
-5(3x + 4) = 25
4(x + 2) - 3(2x - 4) = 10
-4x - 3 = -1
Answer:
1. x = -3
2. x = 5
3. Exact Form: x = −1/2
Decimal Form: x = −0.5
Step-by-step explanation:
Answer:
1. -3
2. 2/3
3. 1/2
Which set of ordered pairs does not represent a function?
{(7,4),(-4,1),(4, -3), (-7,7)}
{(-8, -7), (4,-2), (2,9),(-8,8)}
{(-9, -2), (8, -2), (2, -5), (-8,4)}
{(-7,5), (7,9),(-3,5),(3,3)}
Answer:
{(-8, -7), (4,-2), (2,9),(-8,8)}
Solve 14m = 98
A. M=7
B. M=112
C. M= 84
D. M=8
Answer:
A) m=7
Step-by-step explanation:
Just divide 98 by 14
Answer:
A is the answer
Step-by-step explanation:
7×14 = 98
Evaluate 5p - 9q for p = 8 and q = 7.
Plzzz helppp
Answer:
-23
Step-by-step explanation:
Substitute the value of the variable into the expression and simplify.
A backpack costs $18 and has a 7 percent tax. How much will Sheila have to pay for the backpack after tax?
Answer: 19.26
Step-by-step explanation: 7% is $1.26, so just add 1.26 and 18.
Answer:
19.36 dollars is the answer
Step-by-step explanation:
PLEASE HELP!
The area of a large rectangular field is 12, 750 square yards. The with is 150 ft.
a. find the length of the field in yards.
b. what is the length of the field in feet?
c. what is the area of the field in square feet?
Answer:
Area of rectangular field = 12750 square yards
Width = 150 feet
<< Find the length of the field in yards. >>
Your conversion factor: 3 feet = 1 yard
Width = 150 feet = 150/3 = 50 yards
Therefore,
Area = 12750 = L(50)
where
L = length of field = 12750/50
L = 255 yards
<< What is the length of the field in feet? >>
L = 255 yards * 3 feet/yard
L = 765 feet
< .What is the area of the field in square feet? >>
Since there are 3 feet in 1 yard, then there are 9 sq ft in 1 sq yard. Therefore,12750 sq yards * 9 sq feet/sq yd = 114,750 sq feet
Step-by-step explanation:
HEY CAN ANYONE PLS ANSWER DIS MATH QUESTION!!!!!!!!!!!!
Answer:
A is the answer, i.e at the cost, c of $250.
Step-by-step explanation:
0.08c = 0.05c + 7.5
0.08c - 0.05c = 7.5
0.03c = 7.5
c = 7.5/0.03 = 250
It is estimated % of all adults in United States invest in stocks and that % of U.S. adults have investments in fixed income instruments (savings accounts, bonds, etc.). It is also estimated that % of U.S. adults have investments in both stocks and fixed income instruments. (a) What is the probability that a randomly chosen stock investor also invests in fixed income instruments? Round your answer to decimal places. (b) What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments?
Complete question :
It is estimated 28% of all adults in United States invest in stocks and that 85% of U.S. adults have investments in fixed income instruments (savings accounts, bonds, etc.). It is also estimated that 26% of U.S. adults have investments in both stocks and fixed income instruments. (a) What is the probability that a randomly chosen stock investor also invests in fixed income instruments? Round your answer to decimal places. (b) What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments?
Answer:
0.929 ; 0.306
Step-by-step explanation:
Using the information:
P(stock) = P(s) = 28% = 0.28
P(fixed income) = P(f) = 0.85
P(stock and fixed income) = p(SnF) = 26%
a) What is the probability that a randomly chosen stock investor also invests in fixed income instruments? Round your answer to decimal places.
P(F|S) = p(FnS) / p(s)
= 0.26 / 0.28
= 0.9285
= 0.929
(b) What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments?
P(s|f) = p(SnF) / p(f)
P(S|F) = 0.26 / 0.85 = 0.3058823
P(S¦F) = 0.306 (to 3 decimal places)
The closest distance towards Venus to the Sun is about 46,000,000 kilometers.The closest distance from Neptune to the Sun is about 4.5 x 10^9 kilometers. About how many times closer to the Sun is Venus than Neptune? Write your answer in standard notation
Answer:
Neptune is 45 million so 1 million difference
What’s 2+2
Answer : 4
hope it helps
Answer:
what
Step-by-step explanation:
$180 car 15% discount
Answer:
$153
Step-by-step explanation:
180 * 0.85 = 153
HELP!!!
Find the exact solution of x. 3x2 + 7 = 28
Answer:
2.65 I think I am not sure but the solution
Step-by-step explanation:
3x² = 28 - 7
3x² = 21
x² = 7
x = 2.65
Answer:
x = ± [tex]\sqrt{7}[/tex]
Step-by-step explanation:
Given
3x² + 7 = 28 ( subtract 7 from both sides )
3x² = 21 ( divide both sides by 3 )
x² = 7 ( take the square root of both sides )
x = ± [tex]\sqrt{7}[/tex]
Which property of real numbers is shown bellow sqrt 6x +0 = sqrt 6x x is a real number
A. Identity property of multiplication B.commutative property of addition
C. Distributive property
D. Identity property of addition
Answer:
Option: D
Step-by-step explanation:
Took the Test
7874 divided by 13
Help pls:)
Answer:
605.69 or if you round it 606 but that's the answer
Please HLEP me
I’ll give u brainlist ♥️
Answer:
9. 1:210. x = 1011. x = 1212. A = 8789 ft²Step-by-step explanation:
see attached image
Answer 10n = 40
Brainlist included
Answer:
n=4 :)
Step-by-step explanation:
40/10=4
Write the equation of the parabola in vertex form.
vertex (3,3), point (1, -9)
f(x) =
Can someone help me ASAP??
Answer: -9 = a(1 - 3)² + 3
Step-by-step explanation:
Vertex Form Equation:
y = a(x - h)² + k
vertex: (h, k) which means
h = 3
k = 3
because your vertex is (3, 3).
Your point is (1, -9) which is (x, y).
This means
x = 1
y = -9
Now, plug everything into your Vertex Form Equation:
-9 = a(1 - 3)² + 3
That’s your equation and final answer, but of course, if you need to, you can solve for a if you need to.
If a is positive, the parabola opens up. If a is negative, the parabola opens down.
Hope this helps!
If I have 20 apples and I eat 20, and a friend gives me 20 more, and I eat those 20 again, how many apples do I have in total?
Answer:
0
Step-by-step explanation:
If you have 20 apples and you eat 20, and a friend gives you 20 more, and you eat those 20 again, 20-20=0+20=20-20+0
Rylan is hiking in Death valley. He starts at an elevation of 250 feet above sea level and hikes to an 2300 above sea level. How much did his altitude change?
Answer:
250+2300=2350
HELLLLLLLP .....................
Answer:
B. No, because one x-value corresponds to two different y-values.
Step-by-step explanation:
Answer:
I believe It's B
Step-by-step explanation:
I WILL AWARD BRAINLIEST
Answer:
Choice 2 and 4
Step-by-step explanation:
3x-1>2
+1 +1
3x>3
x>1
8-4x<4
-8 -8
-4x<-4
x>1
How many pounds are in 2 and 3 fourth tons
Answer:
5500
Step-by-step explanation:
Answer: 2 tons
Step-by-step explanation:
Can someone help ???
Answer:
B) 5/4
Step-by-step explanation:
when u multiply
100 x 5/4 you get 125
Answer:
5/4
Step-by-step explanation:
the answer is 5/4
100*5=500
500/4=125
A diver is standing on a platform 25 feet above the pool. He jumps from the platform at an initial velocity of 10 ft/s. Use the formula h(t)=-16t^2+vt+s where his height above the water at time t seconds, v is the starting upward velocity, and s is his starting point to write an equation to model the dive
Answer:
(one thing to notice, the units of the 16 in the height equation should be ft/s^2, because this is an acceleration)
We know that:
v is the initial vertical velocity, and we know that it is 10ft/s
then:
v = 10ft/s.
s is the initial position, and we know that he starts on a platform 25ft above the pool, then if we define the pool as the 0 in the vertical axis, we have:
s = 25ft
Now we can write the height as:
h(t) = (-16ft/s^2)*t^2 + (10ft/s)*t + 25ft.
Now with this equation, we can find the time it takes for the diver to hit the pool.
Remember that we defined the pool as the 0 in the vertical axis, then when h(t) = 0ft the diver will enter in the pool.
With that, we can find the value of t = time, that it takes for the diver to enter the pool.
h(t) = 0 ft = (-16ft/s^2)*t^2 + (10ft/s)*t + 25ft.
Now we can solve this with the Bhaskara equation:
[tex]t = \frac{-10m/s +. \sqrt{(10m/s)^2 - 4*(25ft)*(-16ft/s^2)} }{-16ft/s^2*2} = \frac{-10ft/s +- 41.23ft/s}{-32ft/s^2}[/tex]
We will have two solutions:
t = ((-10 + 41.23)/-32) s = -0.96s
t = (-10 - 41.23)/-32) s = 1.6 s
The negative has no physical sense, so we can discard that option.
This means that the only correct option is 1.6 seconds, then the time that it takes for the diver to enter the pool after he jumps is 1.6 seconds.