Answer:
12
Step-by-step explanation:
We are given the expression:
[tex]\frac{5z+x^2}{x}[/tex]
and asked to evaluate when x= 5 and z=7. Therefore, we must substitute 5 for x and z for 7.
[tex]\frac{(5(7)+(5)^2)}{5}[/tex]
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.
First, evaluate the exponent.
(5)²= 5*5= 25
[tex]\frac{(5(7)+25)}{5}[/tex]
Next, multiply 5 and 7.
5*7=35
[tex]\frac{(35+25)}{5}[/tex]
Next, add 35 and 25.
25+25=60
[tex]\frac{60}{5}[/tex]
Finally, divide 60 by 5.
[tex]12[/tex]
The expression (5z+x²)/x when x=5 and z=7 is 12.
Two airplanes leave the airport. Plane A departs at a 41° angle from the runway, and plane B departs at a 43° from the runway. Which plane was farther away from the airport when it was 5 miles from the ground? Round the solutions to the nearest hundredth.
Plane A / 7.62 mi away
Plane A / 6.63 mi away
Plane B / 6.84 mi away
Plane B / 7.33 mi away
Answer:
Plane A / 7.62 mi away
Step-by-step explanation:
We have to calculate the distance of each plane from the airport.
In other to do this, we would use the trigonometric function of Sine
sin θ = Opposite/Hypotenuse
For Plane A
Plane A departs at a 41° angle from the runway
sin θ = Opposite/Hypotenuse
θ = 41°
Distance from the ground = Opposite = 5 miles
Hypotenuse = ???
sin 41° = 5 miles/Hypotenuse
sin 41° × Hypotenuse = 5 miles
Hypotenuse = 5 miles/sin 41°
Hypotenuse = 7.6212654335 miles
Approximately to the nearest hundredth ≈ 7.62 miles
For Plane B
Plane B departs at a 43° from the runway
sin θ = Opposite/Hypotenuse
θ = 43°
Distance from the ground = Opposite = 5 miles
Hypotenuse = ???
sin 43° = 5 miles/Hypotenuse
sin 43° × Hypotenuse = 5 miles
Hypotenuse = 5 miles/sin 43°
Hypotenuse = 7.3313959282 miles
Approximately to the nearest hundredth ≈ 7.33 miles
From the above calculation, we can see that Plane A what 7.62 miles away from the airport while Plane b was 7.33 miles away from the airport.
Therefore Plane A was farther away from the airport (7.62 miles away) when it was 5 miles from the ground.
Answer:
Plane A / 7.62 mi away
Step-by-step explanation:
I got it right on the test
A roulette wheel has 38 slots total, 36 of which are numbered 1 through 36, and 2 green slots labeled "0" and "00." For any spin of the wheel, what is the probability of the roulette ball NOT landing on red?
Answer:
Probability (Roulette ball not landing on red) = 10 / 19
Step-by-step explanation:
Given:
Number of total slots = 38
Number of red slots = 18
Number of black slots = 18
Number of green slots = 2
Find:
Probability (Roulette ball not landing on red)
Computation:
Probability (Roulette ball not landing on red) = 1 - Probability (Roulette ball landing on red)
Probability (Roulette ball not landing on red) = 1 - (18 / 38)
Probability (Roulette ball not landing on red) = 20 / 38
Probability (Roulette ball not landing on red) = 10 / 19
between which two consecutive integers is the negative square root of 5
Answer: Between the numbers -2 and -3
Step-by-step explanation:
The negative square root of 5 will be slightly greater than 2 because the square root of 4 is 2 and 5 is greater than 2. The negative square root of 5 will not be greater than -3 because 3 squared is 9. So it has to be between -2 and -3.
Answer:
-2 and -3
Step-by-step explanation:
So in a simple way we can look at it as what is square root of positive 5.
This is between 2 and 3 but since we are looking for Negative 3, our answer is between -2 and -3
Hope this helps!
what is the product of 45.and 15
Answer:
675 In other words, we find the product of 45 and 15 by simply calculating 45 times 15 which equals 675.
Answer:
The product of 45 and 15 is 675.
Step-by-step explanation:
You can do it mentally this way:
45 * 15 = 45(10 + 5) = 450 + 225 = 675.
Granola 6 cups rolled oats 2 cups mixed nuts 1 2 cup sesame seeds 1 cup dried cranberriesWhat is the ratio of cups of mixed nuts to the total number of cups of granola? The ratio of cups of mixed nuts to cups of granola is to . 1 cup dried unsweetened coconut 1 2 cup honey
Answer:
2:11
Step-by-step explanation:
6 cups rolled oats, 2 cups mixed nuts, 1 /2 cup sesame seeds, 1 cup dried cranberries, 1 cup dried unsweetened coconut, 1 /2 cup honey. What is the ratio of cups of mixed nuts to the total number of cups of granola? The ratio of cups of mixed nuts to cups of granola is to .
Solution
Rolled oats= 6 cups
Mixed nuts=2 cups
Sesame seeds=1/2 cup
Cranberries= 1 cup
Dried unsweetened coconuts=1
Honey =1/2 cup
The ingredients listed above are used to make granola
Total cups of granola= Rolled oats + Mixed nuts + Sesame seeds + Cranberries + Dried unsweetened coconuts + Honey
=6 + 2 + 1/2 + 1 + 1 + 1/2
=11 cups
The ratio of cups of mixed nuts to cups of granola= mixed nuts : granola
=2:11
Answer:
2 to 11
Step-by-step explanation:
What is f(6) for the function f(x)=3x-8
Answer:
10
Step-by-step explanation:
Plug in "6" for each x value.
3(6) - 8
18 - 8
10
Five times the sum of a number and 6 equals 8.
Answer:
Algebraic expression = 5(x+6)=8
x = -22/5
Step-by-step explanation:
Let the unknown number be x
Translate into Algebraic expression ;
[tex]5(x+6)=8[/tex]
Solve the equation
[tex]5\left(x+6\right)=8\\Divide\: both \:sides \:by \:5\\\frac{5\left(x+6\right)}{5}=\frac{8}{5}\\\\Simplify\\x+6=\frac{8}{5}\\\\\mathrm{Subtract\:}6\mathrm{\:from\:both\:sides}\\x+6-6=\frac{8}{5}-6\\\\\mathrm{Simplify}\\x=-\frac{22}{5}[/tex]
[tex]\rule[225]{225}{2}[/tex]
Answer:
[tex]\Huge \boxed{5(x+6)=8}[/tex]
[tex]\rule[225]{225}{2}[/tex]
Step-by-step explanation:
Let the number be x.
The sum is the result from adding two or more values together.
The sum is multiplied by 5. The result is equal to 8.
[tex]5* (x+6) =8[/tex]
[tex]5(x+6)=8[/tex]
[tex]\rule[225]{225}{2}[/tex]
please help:) which answer represents 4.72 times 10 to the 10th power? A. 472,000,000,000 B. 4,720,000,000 C. 47,200,000,000 D. 472,000,000
Answer:
C
Step-by-step explanation:
4.72×10^10
4.72×1000000000
move the point(.) ten times to your right. after first two movements
you'll have 472 remaining 8 digits to make
47200000000
In a High School, 60% of the boys play baseball and 24% of the boys play baseball and football. What is the percent of those that play football given that they
also play baseball? Record your answer and fill in the bubbles on the answer document (Enter only a number for your answer.)
Answer:
i play baseball mark me as brainliest thank my answer and rate me as a 5 because im white
Step-by-step explanation:
Find the distance d(P1, P2) between the points P1 and P2. P1 = (-4, -3); P2 = (2, 2)
Answer:
[tex]\sqrt{61}[/tex] ≈ 7.81
Step-by-step explanation:
Calculate the distance d using the distance formula
d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]
with (x₁, y₁ ) = P1(- 4, - 3) and (x₂, y₂ ) = P2(2, 2)
d = [tex]\sqrt{(2+4)^2+(2+3)^2}[/tex]
= [tex]\sqrt{6^2+5^2}[/tex]
= [tex]\sqrt{36+25}[/tex]
= [tex]\sqrt{61}[/tex] ≈ 7.81 ( to 2 dec. places )
The distance between P₁ = (-4, -3) and P₂ = (2, 2) is 7.810
Distance between two points:The distance between two points is the shortest length between two points.
Given P₁ = (-4, -3) and P₂ = (2, 2) are the two points
Formula: Distance between two points (x₁, y₁) and (x₂, y₂)is [tex]\sqrt({x_{2}-x_{1})^{2} )+({y_{2}-y_{1})^{2} }[/tex]
Here, (x₁, y₁) = (-4, -3) and (x₂, y₂) = (2, 2)
The distance between P₁ and P₂ is[tex]\sqrt({2}-(-4_}))^{2} )+({2}-(-3)})^{2}[/tex]
=[tex]\sqrt({(2+4)^{2} } +(2+3)}^{2})}[/tex]
= [tex]\sqrt({6^{2} } +5^{2})[/tex]
= [tex]\sqrt({36}+25)[/tex]
= [tex]\sqrt{61}[/tex]
= 7.810
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Worksheet 1.3
Part 1: Write a math expression for each problem (model the problem).
1)
Lumpy drove for h hours at 50 mph. How far did he drive?
Answer:
d = 50h
Step-by-step explanation:
distance = speed × time
Lumpy's distance (d) in miles, after driving h hours at 50 miles per hour, is given by ...
d = 50h
please help! thank you <33
Answer:
14
hope this helps!
solve for k k/6 = 4/3
Answer:
k = 8
Step-by-step explanation:
Given
[tex]\frac{k}{6}[/tex] = [tex]\frac{4}{3}[/tex] ( cross- multiply )
3k = 24 ( divide both sides by 3 )
k = 8
Use a graphing calculator, or another piece of technology, to find the zeros of the function f(x) = -2x3 + 5x2 +1.
What are the approximate zeros to the nearest tenth?
There may be more than one correct answer. Select all correct answers.
Answer:
x
≈
2.57538512
Step-by-step explanation:
Find the mean distance (○` 3′○)
Answer:
10,724.3 mi
Step-by-step explanation:
The mean distance travelled daily by Ling is the sum of the distance travelled each day divided by the number of days travelled so far.
Mean distance = [tex] \frac{10,150 + 10,211 + 10,424 + 10,769 + 10,884 + 11,155 + 11,477}{7} [/tex]
Mean distance = [tex] \frac{75,070}{7} = 10,724.3 mi [/tex] (approximated to nearest tenth)
#6) Beth saved a total of $30 per month for her first car. Beth saved
money for 20 months and opened her account with $100. What is the
domain and range of the situation representing the amount of money
Beth saved in respect to time she saved? Write your answer in
interval notation.
D:
R:
Answer:
1) The domain In interval notation is [0, 20]
2) The range in interval notation is [100, 700]
Step-by-step explanation:
The given parameters are;
The amount Beth saved per month = $30
The number of months Beth saved = 20 months
The amount with which Beth opened her account = $100
Therefore, the amount of money Beth saved with respect to time is given as follows;
Y = $100 + $30 × X
Where;
Y = The amount of money Beth saved
X = The time (number of months) Beth saved
The domain is given as follows;
[tex]\{X | \ 0 \leq X \leq 20 \}[/tex]
The domain in interval notation is [0, 20]
For the range, when X = 0, Y = $100
When X = 20, Y = $100 + $30 × 20 = $700
Therefore, the range is given as follows;
[tex]\{Y | \ 100 \leq Y \leq 700 \}[/tex]
Which the range in interval notation is [100, 700].
PLEASE HURRY Pump it Up gym's daily revenue each can be modeled by R(x) = 5x where x represents the number of customers that visit the gym each day. The gym's daily costs can be modeled by the function C(x) = 2x + 150. Find the profit function P(x) if: P(x) = R(x) - C(x)
Answer:
P(x) = 3x - 150
Step-by-step explanation:
● P(x) = R(x) - C(x)
We khow that:
● R(x) = 5x
● C(x) = 2x + 150
● P(x) = 5x -(2x+150)
● P(x) = 5x - 2x -150
● P(x) = 3x - 150
The profit function of P(x) is 3x - 150.
It is required to find profit function of P(x).
What is function?A function is defined as a relation between a set of inputs having one output each. function is a relationship between inputs where each input is related to exactly one output. Every function has a domain and codomain or range. A function is generally denoted by f(x) where x is the input.
Given :
Daily revenue
R(x) = 5x where x represents the number of customers that visit the gym each day.
C(x) = 2x + 150
P(x) = R(x) - C(x)...(i)
Put the value of R(x) and C(x) in equation ..(i)
P(x) = 5x -(2x+150)
P(x) = 5x - 2x -150
P(x) = 3x - 150
Therefore, the profit function of P(x) is 3x - 150.
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Tony buys a CD that is priced at $13.59. He has a coupon for $1.85 off. He pays with a $20 bill. Which is the best whole number estimate of how much change he gets? $8 $8.26 $9 $9.26
Answer:
$8
Step-by-step explanation:
13.59-1.85=11.74
20-11.74=8.26
8.26 rounded Is 8
Answer:
A
Step-by-step explanation:
4. Describe how you can tell by looking at the graph of a function
which variable is the input variable and which is the output variable.
Answer: The variable in the vertical axis (or y-axis) is the output
The variable in the horizontal axis (or x-axis) is the input.
Step-by-step explanation:
Usually, a graph of a function y = f(x) is represented in an X-Y coordinate axis.
An X-Y coordinate axis is conformed by two perpendicular lines, one vertical (y-axis) and one horizontal (x-axis)
The vertical axis (or the y-axis) is the output, and the horizontal axis (or the x-axis) is the input.
This method will work almost always, as is standardized that the x-axis corresponds to the input, and the y-axis corresponds to the output.
The height of the sail on a boat is 7 feet less than 3 times the length of its base. If the
The area of the sail is 68 square feet, find its height and the length of the base.
Answer:
Base=8 feet
Height=17 feet
Step-by-step explanation:
Let
Base=x
Height=3x-7
Area=68 square feet
Area of the sail boat=1/2 * base * height
68 = 1/2 * x * (3x-7)
Cross product
68 * 2 =(1) * (x) * (3x-7)
136 = 3x^2 - 7x
3x^2 - 7x - 136=0
Using quadratic formula
x= -b +or- √b^2 - 4ac / 2a
= -(-7) +or- √(-7)^2 - (4)(3)(-136) / 2(3)
= 7 +or- √49 - (-1632) / 6
= 7 +or- √49+1632) / 6
= 7 +or- √1681 / 6
=7 +or- 41 /6
x= 7+41 / 6 or 7-41 / 6
=48/6 or -34/6
=8 or -17/3
Answer:
Step-by-step explanation:
Let
Base=x
Height=3x-7
Area=68 square feet
Area of the sail boat=1/2 * base * height
68 = 1/2 * x * (3x-7)
Cross product
68 * 2 =(1) * (x) * (3x-7)
136 = 3x^2 - 7x
3x^2 - 7x - 136=0
Base of the boat can't be a negative value
Therefore,
Base = x = 8 feet
Height= 3x-7
=3(8)-7
=24-7
=17 feet
What is the perimeter of the given figure?
A.19pie inches
B. 24 + 5pie inches
C. 29pie inches
D. 14 + 5pie inches
Answer:
D.
Step-by-step explanation:
The length of the unmarked side of the triangle is found by using Pythagoras:
x sqrt (10^2 - 6^2)
= sqrt 64
= 8.
The length of the curved part = 1/2 * pi * 10 = 5pi
Perimeter = 8 + 6 + 5pi
= 14 + 5pi
Answer:
D. 14 + 5π inches
Step-by-step explanation:
1. solve for the side of a triangle using Pythagorean = [tex]\sqrt{(10^2 - 6^2)}[/tex] = 8 in.
2. circumference of a half circle = πd /2 = π*10 / 2 = 5π in.
3. total perimeter = (8 + 6) + 5π = 14 + 5π
therefore, the answer is D. 14 + 5π inches
According to Nasa, when the International Space Station (ISS) is at an altitude of 385 kilometers, it travels at about 17,178 miles per hour. After how many hours of travel will the ISS reach a star that is 1.8 lightyears away? Recall that 1 light year = 9.5 ∙ 1012 kilometers and 1 kilometer = 0.62 miles. In your final answer, include all of your calculations.
Answer:
Supposing the ISS travels at a constant speed, then use the relation,
t=space/velocityt=space/velocity
Then you will obtain,
t=1.65\cdot 10^9\ hourst=1.65⋅109 hours
a child's toy train collection contains 5 engines, 5 red cars, 7 blue cars, and 2 cabooses. What is the probability of randomly selecting pieces to make a three-part train of engine, red car, caboose?
Answer:
25/2907Step-by-step explanation:
Probability = Expected outcome/Total outcome of events
If a child's toy train collection contains 5 engines, 5 red cars, 7 blue cars, and 2 cabooses, the total collection will be 5+5+7+2 = 19 total collection
Note that if we are choosing this parts to make part engine, his car parts will no longer be replaced. Hence this is a problem of probability without replacement
If we randomly select pieces to make a three-part train of engine, red car and caboose, this can be chosen in that order and the following ways;
Probability of choosing an engine = 5/19
Probability of choosing a red car = 5/18 (note that the total collection has reduced by 1 since we didn't replace the engine)
Probability of choosing a carboose= 2/17 (the car chosen was not replaced as well)
Therefore the probability of randomly selecting pieces to make a three-part train of engine, red car, caboose is the product of the three probability calculated above i.e 5/19 * 5/18 * 2/17 = 50/5814
= 25/2907
I am really confused
Answer:
GHC 33.50
Step-by-step explanation:
Pens: 6.50*.15=.975
.975*20=19.50
Pencils: 4.00*.10=.40
.40*35=14
Total=19.50+14=
33.50
A thread is wound 200 times round a reel of diameter 5cm. Use the value 3 for pie to find the approximate length of the thread in metres.
Answer:
L = 30 m
Step-by-step explanation:
lets make it simple and accurate
given
reel dia = 5 cm = 0.05 m
200 times round the reel
π = 3
reel O circumference = π d
Length of thread = Number of times round the reel x circumference
therefore,
L = 200 x (3 * 0.05)
L = 30 m
The approximate length of the thread wound around the reel is 30 meters.
Here, we have,
To find the approximate length of the thread wound around the reel, we can use the formula for the circumference of a circle.
Circumference = π * diameter
Given that
the diameter of the reel is 5 cm and we are using the value 3 for π, we can calculate the circumference:
Circumference = 3 * 5 cm
Circumference = 15 cm
Now, since the thread is wound 200 times around the reel, we need to calculate the total length of the thread:
Total length of thread = Circumference * Number of times wound
Total length of thread = 15 cm * 200
Total length of thread = 3000 cm
To convert the length from centimeters to meters, we divide by 100:
Total length of thread in meters = 3000 cm / 100
Total length of thread in meters = 30 meters
Therefore, the approximate length of the thread wound around the reel is 30 meters.
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How many pounds are in 2 tons 1, 920 ounces?
A.4, 240 pounds
B.5,920 pounds
C.4, 120 pounds
D.02, 120 pounds
Answer:
c. 4,120 pounds
Step-by-step explanation:
2 tons = 4000 pounds
1920 ounces = 120 pounds
The amount in pounds of 2 tons 1, 920 ounces by unit conversion will be 4,120 pounds thus, option (C) is correct.
What is unit conversion?To convert any unit into another is called a unit conversion.
In order to convert units, we need to care about their dimensions their dimension should not be changed.
It is known that,
1 tone = 2000 pounds
2 tons = 4000 pounds
It is also known that,
1 ounce = 0.0625 pounds
1, 920 ounces = 120 pounds.
Total = 4000 + 120 = 4, 120 pounds
Hence "The amount in pounds of 2 tons 1, 920 ounces by unit conversion will be 4,120 pounds".
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What is the value of the expression below?
72 ÷ 4.5x3+8
Answer:
56
Step-by-step explanation:
Apply PEMDAS:
[tex]72 / 4.5*3+8\\\\16*3+8\\\\48+8\\\\\boxed{56}[/tex]
Add or subtract.
1.-5+ (-2)
negative 5 plus negative 2
mathematically ,-5-2=-7
Work out the value of v when u = 4 and t = 3 v=u+10t
Answer:
v=u+10t
u=4
t=3
v=4+10*3
v=4+30
v=43
(58-x)-(x)=12 in one variable
Answer:
x = 23
Step-by-step explanation:
Step 1: Write out equation
(58 - x) - (x) = 12
Step 2: Distribute negative
58 - x - x = 12
Step 3: Combine like terms
58 - 2x = 12
Step 4: Subtract 58 on both sides
-2x = -46
Step 5: Isolate x (divide both sides by -2)
x = 23