Answer:
$2.50
Step-by-step explanation:
Is Selena paid $15 for 6 gallons and you want to find the price for one gallon, all you need to do is divide the price of 6 gallons ($15) by the number of gallons (6).
15/6 = 2.5. Your answer is $2.50. Hope this helps ^-^
You have 37 coins that are nickels, dimes, and pennies. The total value of the coins is $1.55. There are twice as many pennies as dimes. Find the number of each type of coin in the bank.
Answer: Let n be the number of nickel
s, d be the number of dimes, and p be the number of pennies.
Answer:
n = number of nickels = 7
d = number of dimes = 10
p = number of pennies = 20
Step-by-step explanation:
Let
n = number of nickels
d = number of dimes
p = number of pennies.
n + d + p = 37
0.05n + 0.10d + 0.01p = 1.55
p = 2d
Substitute p = 2d into the equation
n + d + 2d = 37
0.05n + 0.10d + 0.01(2d) = 1.55
n + 3d = 37
0.05n + 0.10d + 0.02d = 1.55
n + 3d = 37 (1)
0.05n + 0.12d = 1.55 (2)
Multiply (1) by 0.05
0.05n + 0.15d = 1.85
0.05n + 0.12p = 1.55
Subtract
0.15d - 0.12d = 1.85 - 1.55
0.03d = 0.3
d = 0.3/0.03
= 10
d = 10
p = 2d
= 2(10)
p = 20
n + d + p = 37
n + 10 + 20 = 37
n + 30 = 37
n = 37 - 30
n = 7
n = number of nickels = 7
d = number of dimes = 10
p = number of pennies = 20
Solve the system using elimination (15 points)
2x+3y=9
x+5y=8
Answer: (3,1)
Step-by-step explanation:
2x + 3y = 9
(x + 5y = 8) -2
2x + 3y = 9
-2x - 10y = -16
-7y = -7
y = 1
2x + 3(1) = 9
2x = 6
x = 3
¿Cuáles son los términos de la expresión
algebraica 5p + 4?
A: 4
B: 5p
C: +
Answer:
A, B
Step-by-step explanation:
Los términos están separados por +, -, / o x.
Felicia ran a 4-mile race in 28 minutes. Complete the table to represent Felicia’s average rate of speed during the race.
Answer:
she runs an average 1mile every 7 minutes
Step-by-step explanation:
sorry if this does not help if this is not what u r looking for maybe clarify
hope this helps also i don't see where the chart is for the question
Jenny is piloting an airplane at point A sees others at b and c. For the pilot of airplane b, calculate the angle between the lines of sight to the airplane at c and Jenny's airplane to the nearest tenth of a degree
Answer:
Step-by-step explanation: 5
The angle between the lines of sight to the airplane at c and Jenny's airplane to the nearest tenth of a degree is 25.1°.
What are trigonometric identities?There are three commonly used trigonometric identities.
Sin x = 1/ cosec x
Cos x = 1/ sec x
Tan x = 1/ cot x or sin x / cos x
Cot x = cos x / sin x
We have,
From the figure,
Cosine theorem:
Cos 120° = (4.2² + 5.7² - BC²) / (2 x 4.2 x 5.7)
-0.5 = (17.64 + 32.49 - BC²) / 47.88
-23.94 = 50.13 - BC²
BC² = 50.13 + 23.94
BC = √(74.07)
BC = 8.6
Sine theorem:
BC / Sin ∠A = AC / Sin ∠B
8.6 / Sin ∠A = 4.2 / Sin ∠B
8.6 / 120 = 4.2 / Sin ∠B
Sin ∠B = (4.2 x 120) / 8.6
Sin ∠B = 58.60
∠B = 25.1°
Thus,
The angle is 25.1°.
Learn more about trigonometric identities here:
https://brainly.com/question/14746686
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Sarah used 2.5 cups of cheese in a dish that serves 10 people. Many used 1.6 cups of cheese ina dish that serves 8 people. How much cheese is in one serving of Sarah's dish?
Answer:
Sarah has. 25 cups in each serving. Amy has. 2 cups in each serving. Sarah is. 05 more than Amy.
Step-by-step explanation:
Which of the following is a true statement?
Answer: T second one because I divided 108 divided by 9 and it equaled 12.
Step-by-step explanation:
I did not do the other steps but like source: Trust me.
Answer:
The answer is B
Step-by-step explanation:
108/9=12
Which number is greater . 60 or 7.5
Answer:
60 is greater than 7.5.
step by step
HELP!!
Select the correct answer.
Scientists studying biodiversity of amphibians in a rain forest have discovered that the number of species is decreasing by 2% per year. There are currently 74 species of amphibians in the rain forest. Which logarithmic function models the time, , in years, it will take the number of species to decrease to a value of n?
Answer:
Option A: f(x) = log_0.98 (n/74)
Step-by-step explanation:
We are told that that the number of species is decreasing by 2% per year.
Thus, number of species each year is 98% or 0.98 of number of species the previous year. .
We are told that there are currently 74 species of amphibians in the rain forest.
Thus, n/74 will represent a fraction of the current number of species.
Thus, the logarithmic function that models the time can be written as;
f(x) = log_0.98 (n/74)
Answer:
A. f(n) = log0.98(n/74)
(got it right on edmentum)
for your assurance please look at the picture below↓Horario is solving the equation -3/4 + 2/5 = 7/20x -1/2
Answer:
x = 3/7
Step-by-step explanation:
(-2)^3=
Answer:
[tex]\left(-2\right)^3=-8[/tex]
Step-by-step explanation:
Given the expression
[tex](-2)^3[/tex]
[tex]\mathrm{Apply\:exponent\:rule}:\quad \left(-a\right)^n=-a^n,\:\quad \mathrm{if\:}n\mathrm{\:is\:odd}[/tex]
[tex]\left(-2\right)^3=-2^3[/tex]
[tex]=-2^3[/tex]
[tex]=-8[/tex] ∵ [tex]2^3=8[/tex]
Therefore,
[tex]\left(-2\right)^3=-8[/tex]
A department store buys 400 shirts at a cost of $7,200 and sells them at a selling price of $20
each. Find the percent
Answer:
11%
Step-by-step explanation:
I think that's the answer just check first
Dorian decided his favorite food is Sour Patch Kids,and that was going to eat them every day.He eats 20 Sour Patch Kids in half a day. What is the constant of proportionality?
Answer:
The constant of proportionality is 40 sour patch kids per day
Step-by-step explanation:
Here, we want to find the constant of proportionality
From the question, we are told that he eats 20 sour patch kids in half a day
what this mean is that he will eat 20 * 2 = 40 sour patch kids in a day
The constant of proportionality is thus 40 sour patch kids per day
Help!!! Thanks :))))))
Answer:
80
Step-by-step explanation:
180-60=120
120-40=80
Mandy divided a 5-pound bag of oranges into 12 equal piles. Which rational number represents the weight of the oranges in each pile? 1/5 5/12 2 1/6 2 2/5
Answer:
5/12
Step-by-step explanation:
Total pound of oranges = 5
Number of piles = 12
Weight of the oranges in each pile = Total pound of oranges / Number of piles
= 5 / 12
The rational number which represents the weight of the oranges in each pile is 5/12
If the ice cream truck sales 90 ice cream cones, how hot could you predict it was outside?
0 95
105
102
O
100
Answer:
It would most likely be in the 100's so maybe 105
What is the given point on the line of this equation y +2 = (1 - 3)2
Answer:
4
Step-by-step explanation:
Move numbers to right hand side
PLZ ANSWER GUYS. The sum of 3 consecutive odd numbers is 39. What is the smallest of these numbers? Write an equation for for this problem.
Answer:
The three integers are
11, 13, and 15.
Step-by-step explanation:
. The sum of these is 39, so we can write:
x+(x+2)+(x+4)=39
Open the brackets and simplify.
x+x+2+x=+4=39
3x+6=39
Subtract 6 from each side.
3x=33
Divide both sides by 3.
x=11
Therefore: (x+2)=13 and (x+4)=15
PLEASE HELP ME ON THIS QUESTION IVE BEEN STUCK ON IT FOR 10 MINUTES!!!!!
Alice, Maggie, Luna, and Zeinab were making necklaces for the school fair. Alice made 52 necklaces that are each 8.2 inches long. Maggie made 46 necklaces that are each 7.8 inches long. Luna made 21 necklaces that were each 7.7 inches long. And Zeinab made 31 necklaces that were each 8.7 inches long. They all used beads that were each 2 centimeters long. how much beads would the girls use to fit all of the necklaces they made?
Alice:_______
Maggie:_______
Luna:_______
Zeinab_______
40 POINTS!!!
Answer:
Step-by-step explanation:
PLEASE MARK BRAINLIEST
Given: m || CB Prove: m∠ABC + m∠BAC + m∠ACB = 180° A triangle and line are shown. Line m contains points X and Y. Triangle A B C sits on line M at point A. Line m and line segment B C are parallel. Which statement justifies that angle XAB is congruent to angle ABC? Corresponding angles of parallel lines cut by a transversal are congruent. Vertical angles are congruent. Same-side interior angles of parallel lines cut by a transversal are supplementary. Alternate interior angles of parallel lines cut by a transversal are congruent.
Answer: D, Alternate interior angles of parallel lines cut by a transversal are congruent
Step-by-step explanation:
Answer:
its D
Step-by-step explanation:
Is 7.165 a rational number?
Answer:
yes it is rational
Help me out pleaseeeeee
Answer:
A
Step-by-step explanation:
LCM of 5 and 3 is 15
thus, denominator is 15
2/5 = 2x3/5x3 = 6/15
1/3 = 1x5/3x5 = 5/15
If a bird can fly 30 feet in 10 seconds, how far will it travel in 50 seconds?
Answer:
150 feet.
Step-by-step explanation:
50/10=5
30*5=150
The bird will fly 150 feet in 50 seconds.
Answer:
150 feet
Step-by-step explanation:
30x5=150
BrainlyMiddleSchool
1. Find the distance between the
points: (1, 2),(6, 4)
Someone help me with this plis !
Answer:
5.8516
Step-by-step explanation:
To find the distance between these 2 points we have to use the distance formula. The distance formula is as follows:
[tex]d = \sqrt{(x2 - x1)^2 + (y2 - y1)^2}[/tex]
Let's find the variables of this equation:
x2 = 6
x1 = 1
y2 = 4
y1 = 2
Now, we can plug these in to the equation:
[tex]d = \sqrt{(6-1)^2 + (4-2)^2}[/tex]
Next, let's solve:
[tex]d = \sqrt{(5)^2 + (2)^2}\\d = \sqrt{25 + 4} \\d = \sqrt{29} \\d = 5.8516[/tex]
Therefore, the distance between points (1,2) and (6,4) is 5.8516
Hope this helps!!
- Kay :)
-11 = -4/3 y
Please answer the question...
What is the value of y?
Answer:
8.25
Step-by-step explanation:
-11 = (-4/3) y
(-11)/(4/3) =y
∴ y = 8.25
In isosceles triangle ABC, AB=AC.If B=55, calculate A
Answer: ∠A = 70°
because ABC is an isosceles triangle and AB = AC
=> ∠B = ∠C = 55°
=> ∠A = 180-(∠B + ∠C) = 180° - 55°.2 = 70°
Step-by-step explanation:
sorry i can't help :(
Is the equation y +1 = 6(x + 5) in point-slope form? Justify your answer.
(select) the equation is equivalent to
Answer:
yes its is slope
Step-by-step explanation:
Trigonometry ( help a girl out)
Resolving Vectors
Find the components of a car’s displacement if it travels 250 miles at an angle of 45 degrees north of west.
Answer:
4.587
Step-by-step explanation:
x²-7=0 extracting square roots
Answer:
x = ± [tex]\sqrt{7}[/tex]
Step-by-step explanation:
Given
x² - 7 = 0 ( add 7 to both sides )
x² = 7 ( take the square root of both sides )
x = ± [tex]\sqrt{7}[/tex]
WILL GIVE 75 POINTS & SEND $10 ON CASHAPP!
What is the constant of proportionality for each situation below and what does it mean?
First y = 1.5x
Second:
y
= 7/4x
оа
Ob
First: 1.5 cups of flour per cup of sugar Second: 7/4 cups of flour per cup of sugar
First: 5 cups of flour per cup of sugar Second: 4 cups of flour per cup of sugar
First: 1 cups of flour per cup of sugar Second: 7.4 cups of flour per cup of sugar
Question 5 (2 points)
Answer:
What is the question tell me clearly.
Step-by-step explanation: