Answer:
1 2/9 minutes
Step-by-step explanation:
55 mph
55 / 60 = 11/12
11/12 of a mile = 1 minute
45 mph
45 / 60 = 3/4
3/4 of a mile = 1 minute
11/12 divided by 3/4
11/12 * 4/3
We can cross-cancel
11/3 * 1/3 = 11/9 = 1 2/9
It takes 1 2/9 minutes for the hummingbird to cross the lake
Hope this helps!
(Please let me know if I did something wrong!)
The hummingbird will take 1 minute 13 seconds.
Let the time that will be taken by the hummingbird be represented by x
Note that 1 minute = 60 seconds
Based on the information given, the equation that'll be used in the question will be:
45/55 = 60/x
Cross multiply
(45 × x) = (60 × 55)
45x = 3300
x = 3300/45
x = 73.33 seconds
x = 1 minute 13 seconds
The hummingbird will take 1 minute 13 seconds.
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Theequationforlineucanbewrittenasy = 6x + 6 . Line v , whichisperpendiculartoline u , includes the point (10, –5) . What is the equation of line v ? Write the equation in slope-intercept form. Write the numbers in the equation as proper fractions, improper fractions, or integers.
Answer:
[tex]y=\frac{-1}{6}x-\frac{10}{3}[/tex]
Step-by-step explanation:
Slope intercept form of the equation of a line is [tex]y=mx+b[/tex] where m denotes the slope of line and [tex]b[/tex] denotes the y-intercept.
Equation of a line u is [tex]y=6x+6[/tex]
Here, slope of line u = m = 6
As the line v is perpendicular to line u, product of slopes of both the lines is equal to [tex]-1[/tex].
Slope of line v [tex]=\frac{-1}{6}[/tex]
So, slope intercept form of the line v is [tex]y=\frac{-1}{6}x+b[/tex]
As point [tex](10,-5)[/tex] lies on the line v, put [tex](x,y)=(10,-5)[/tex] in equation [tex]y=\frac{-1}{6}x+b[/tex]
[tex]-5=\frac{-1}{6}(10)+b\\-5=\frac{-5}{3}+b\\ -5+\frac{5}{3}=b\\\frac{-15+5}{3}=b\\\\\frac{-10}{3}=b[/tex]
Equation of line v is [tex]y=\frac{-1}{6}x-\frac{10}{3}[/tex]
which expressions are equal to 3/5 × 6
a. 3 × ( 6 ÷ 5 )
b. 3 ÷ (5 × 6 )
c. ( 3 × 6 ) ÷ 5
d. 3 × 6/5
Answer:
A & C & D
Step-by-step explanation:
A & C & D both show the commutative property of multiplication and therefore is the correct answer because 3/5(6) = 18/5 and 3(6/5) is also 18/5.
3 x (6÷5) is also 18/5
(3×6)÷5 is also 18/5
Convert 8 centimeters to millimeters.
Answer:
80mm
Step-by-step explanation:
As 1 cm = 10 mm
8 cm=80 mm
Answer:
80 millimeters
Step-by-step explanation:
Well you convert it
The function A = 28x- x^2, where x = width, gives you the area of a dog pen in square feet. What is the maximum area? Round to the nearest tenth as necessary
Answer:
max A=42x
Step-by-step explanation:
[Supporting Standard: I can find the sum of an infinite series.]
4. Find the sum of the following series: 600 + 150 + 37.5 ...
Answer:
787.5 is the answer.
Step-by-step explanation:
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please Mark as brainlist
Harper is a sales person who sells computers at an electronics store. She makes a base pay amount of $100 per day regardless of sells and she earns a commission of 1% of the dollar amount of all sells that she makes. Write an equation for P, in terms of x, representing harpers total pay on a day on which she sells x dollars worth of computers.
Answer:
P=0.01x+100
Step-by-step explanation:
1) Ao somar o quíntuplo de um número com 5², o total é 300. Considerando x como a incógnita. Qual o valor de x?
a)25
b)5
c)325
d)55
2) O triplo de um número aumentado do dobro desse mesmo número é igual a 100. Considerando a incógnita como y, qual o valor de y?
a)100
b)20
c)24
d)5
3) A metade de um número, menos 21, é igual a -5. Considere x o valor a ser determinado. É correto afirmar que x é igual a?
a)52
b)-32
c)32
d)16
4)Ao resolver a expressão y - 30 = 3 . 15, qual o valor de y?
a)75
b)65
c)55
d)45
5)Observe a equação 3x + 72 = 104. Qual descrição abaixo corresponde a ela?
a)A soma entre o triplo de um número e 72 é igual a 104
b)O triplo de um número subtraído de 104 é igual a 72
c)O triplo de 3 é igual a 104 somado a 72
6) Quando subtraímos 50 do triplo um número, obtemos 40. Qual equação representa essa afirmação?
a)3x = 50 - 40
b)3x - 50 = 40
c)3x = 40 - 50
7) Determine a solução das seguintes equações do 1º grau com uma incógnita. 63y + 75 = 327. Qual o valor de y=?
a)2
b)4
c)6
d)8
8) Determine a solução das seguintes equações do 1º grau com uma incógnita. 13x - 100 = 8x. Quanto vale x=?
a)18
b)19
c)20
d)21
9) Determine a solução das seguintes equações do 1º grau com uma incógnita. 10 (x + 1) - 8 (x - 2)= 30 . Quanto vale x=?
a)1
b)2
c)4
d)8
10) Determine a solução das seguintes equações do 1º grau com uma incógnita. 10 + 9y = 100. Quanto vale y=?
a)9
b)10
c)11
d)12
Answer:
Huh?
Step-by-step explanation:
derive the equation of a parabola with a focus of (-7,5) and a directrix of y=-11
I need help with this question
Answer:
The equation of the parabola is;
(y + 11)^2/120 = (x + 7)^2 + (y-5)^2
Step-by-step explanation:
Here, we are given the focus (-7,5) and the directix y = -11
We proceed to find the equation of the parabola
That would be in the form;
(y- mx - b)^2 /m^2 + 1 = (x- h)^2 + (y-k)^2
Let’s write the directix in the form y = mx + b
This shows that m = 0 and b = -11
Also h = -7 and k = 5
So let’s substitute;
(y + 11)^2 /(-11^2 + 1) = (x+7)^2 + (y-5)^2
= (y + 11)^2/120 = (x + 7)^2 + (y-5)^2
Answer:
★ The answer is down BELOW
EQUATION : (y + 11)^2/120 = (x + 7)^2 + (y-5)^2
Step-by-step explanation:
Hope you have a great day
plz help ASAP matswatch
Answer:
Step-by-step explanation:
What is 1 2/3 - 2 1/3?
Answer:
-0.6666
Step-by-step explanation:
Answer:
-2/3
Step-by-step explanation:
Make the fractions into improper fractions. Then you procede to subtract from left to right from the top. The 1 2/3 becomes 5/3 and the 2 1/3 becomes 7/3 and when you subtract your answer is -2/3
please help i need it quickly i only have 5 minutes left. ill give brainliest.
Answer:
A
B
C
Step-by-step explanation:
A
11=4(7)-17
11=28-17
11=11
B
-13=4(1)-17
-13=4-17
-13=-13
C
-1=4(4)-17
-1=16-17
-1=-1
Which quadratic expression represents the product of these factors?
(2x + 5)(7 − 4x)
A.
-8x2 + 34x − 35
B.
-8x2 + 6x − 35
C.
-8x2 − 6x + 35
D.
-8x2 − 34x + 35
The answer is c -8x^2-6x+35
Given the function f(x) = 4x evaluate
f(-2)
Answer:
the answer =-8
Step-by-step explanation:
you subsitute -2 for x so its 4(-2) which is -8
Answer:
Given value x=-2, just substitute it to [tex]4^{x}[/tex]
= [tex]4^{-2}[/tex] (this uses the property [tex]a^{-m}=\frac{1}{a^{m} }[/tex])
= This results in:
[tex]\frac{1}{4^{2} } = \frac{1}{16 }[/tex]
An APD Police officer has to write at least 80 speeding
tickets. How many more tickets must a police officer write
if they have already given 27 speeding tickets? Write and
solve the inequality representing this situation.
Answer:
x=[tex]\geq[/tex]80-27
Step-by-step explanation:
there is needed atleast 80 tickets and you've given 27 so you would need a minimum of 53 tickets to make the inequilaty true
24 is equal to 25% of a number n. Write and solve an equation to find n. Write the percent as a Decimal. PLEASE HELP ME
Answer:
Equation: 25% x n = 24
n = 96
Step-by-step explanation:
Because of means to multiply 25% OF n would mean you multiply to solve for n you would do the opposite which is dividing. 25% is the same as .25 so you would do...
24 ÷ .25 = 96
So 96 = n
Hope that helps and have a great day!
x+(y+z) = (x+y) + z is the example of what property?
q = 3x + 9x? idk this one lol
Answer:
q = 12x
Step-by-step explanation:
q = 3x + 9x
Combine like terms
q = 12x
A teacher chooses two students in a class of 15 girls and 10 boys. The students are randomly chosen. What is the probability that the teacher chooses two girls?
The probability that the teacher chooses two girls is 3 / 5.
What is probability?Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Probability = Number of favorable outcomes / Number of sample
Given that a teacher chooses two students in a class of 15 girls and 10 boys. The probability is calculated as:-
P = 15 / 25
P = 3 / 5
Hence, the probability is 3 / 5.
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please help me? im DESPERATE!!!!
Compare solving equations with solving inequalities. How are the processes similar or different?
Answer:
Similarities
1. Adding or subtracting a number from both sides.
2. Multiplying or dividing both sides by a positive number.
3. Applying an increasing function to both sides.
4. Simplifying one or both sides.
Differences
1. Multiplying or dividing both sides by a negative number changes the direction of an inequality. So we cannot multiply or divide both sides by a variable unless we know that the variable is either always positive or always negative. This is not a concern when solving equalities.
2. When applying a decreasing function to both sides of an inequality, the direction of the inequality changes.
3. Swapping both sides of an inequality also changes the direction of an inequality. Again we don't have to worry about this with equalities.
given the following formula, solve for t
Answer:
C
Step-by-step explanation:
Given
v = u + at ( subtract u from both sides )
v - u = at ( isolate t by dividing both sides by a )
[tex]\frac{v-u}{a}[/tex] = t
It might be hard to see but please help me out!
Answer:
X: (-2) (-1) (0) (1) (2)
y: (5) (4) (5) (8) (13)
Step-by-step explanation:
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HELP ASAP
How much interest is earned on a $500 investment made at a 3.5% simple interest
rate over the course of 2 years?
A$3500
B $350
C$35
D$3.50
Answer:
C
Step-by-step explanation:
500* (0.035)
17.5*2
35
PLEASE HELP IF YOU CANNNN
Answer:
Im pretty sure it would land in quadrant 2
Step-by-step explanation:
Write an expression from the description. Then
evaluate the expression.
9 more than the quotient of -36 and -4.
(-36 ÷ -4) + 9
The expression equals 18.
an obese man, 5'0 tall and 160 pounds, sets a long-term goal to lose 40 pounds. What is a reasonable benchmark he might set for himself
Answer: Lose 10 pounds in 3 months
Step-by-step explanation: 5'0, 160, 40 ~ 10 > 3 Months
Which of the following is a line perpendicular
to y = 3x-7?
Answer:
y=-1/3x-7
Step-by-step explanation:
Change the sign of x and flip the slope. 3/1 equals -1/3.
May someone help me with this question?
A circle is centered at the point O (0,0) and has a radius of the square root of 38?
Where’s does the K (6,1) lie?
Answer:
The point (6,1) lies inside the circle.
Step-by-step explanation:
Equation of a Circle
A circle centered at the point (h,k) and with radius r, can be expressed with the equation:
[tex](x-h)^2+(y-k)^2=r^2[/tex]
The center of the given circle is (0,0) and the radius is [tex]r=\sqrt{38}[/tex], thus the equation of the circle is:
[tex](x-0)^2+(y-0)^2=(\sqrt{38})^2[/tex]
Simplifying:
[tex]x^2+y^2=38[/tex]
Each point (x,y) meeting the condition of the equation lies exactly on its circumference. For example, the point [tex](\sqrt{2},6)[/tex] belongs to the circumference, but the origin (0,0) is inside the circle, and the point (5,5) is outside the circle.
We can tell the difference by evaluating the equation at each point. For the first point [tex](\sqrt{2},6)[/tex], the equation is:
[tex](\sqrt{2})^2+6^2=2+36=38[/tex]
The equation is satisfied.
For the origin (0,0):
[tex]0^2+0^2=0[/tex]
For the point (5,5):
[tex]5^2+5^2=50[/tex]
We can conclude that if the left side is greater than 38, the point is outside the circle, if it's less than 38, the point is inside the circle.
Let's test the point (6,1):
[tex]6^2+1^2=37[/tex]
The point (6,1) lies inside the circle.
Evaluate the following expression.
1/2 + 2/3 divided by 1/6
