Solve the equation for y.
5y = 15
A. 75
B. 11
C. 3
D.-3
Answer:
it is C
Step-by-step explanation:
5 divided by 5 it cancels out
then divided 5 by 15= 3
y=3
H(x)= -x^2+8 use (-6)
Answer:
H=44
Step-by-step explanation:
−(−62)+8=−(−36)+8=36+8=44
Answer:
-28
Step-by-step explanation:
-x^2+8
-(-6)^2 + 8 (-6 to the 2 power)
-36 + 8
-28
"The Kid Laroi"- Rapper-Songwriter
A leaf is falling from the top of a tree. The height of the leaf in feet, y, can be found using the function y = -3.5x + 28, where x is the time in seconds the leaf has been in the air. How many seconds did it take the leaf to reach the ground?
Answer:
It took 8 seconds for the leaf to reach the ground.
Step-by-step explanation:
The height of the leaf in feet can be found using the function:
y = -3.5*x + 28
where x is the time in seconds the leaf has been in the air.
You want to know how long it took for the blade to reach the ground. That is, the time it took for the blade to reach a height of 0 feet. So, replacing this value in the expression:
0= -3.5*x + 28
and solving you get:
-28= -3.5*x
(-28)÷ (-3.5)=x
8=x
It took 8 seconds for the leaf to reach the ground.
What is area of circle that has circumference of 12pi
Answer:
36pi
Step-by-step explanation:
Since the formula for the circumference is C=2*pi*r
12pi=2*pi*r we can divide and get r=6 cm
Then, we can use the formula for the area of a circle: Area=pi*r^2 and get Area=pi*6^2=36*pi.
Which situation is modeled by the graph? PLEASE HELP!
Answer:
Height of jump rope used over time.
Step-by-step explanation:The Height is stable and even so not an elevator as it goes to multiple floors not just one and is not used frequently after the same amount of time.Not the rest for the same reason.Jump rope as it can be uniform in height and time unlike the rest.
a motorcycle travels 6 mph faster than a sport car. if the sports car can only go 90 miles in the same time that the motorcycle can go 99 miles, find speed of the motorcycle
the speed of the motorcycle is ...... miles per hour
Answer:
The speed of the motorcycle is 66 miles per hour.
Step-by-step explanation:
We use the following relation to build a system of equations.
[tex]v = \frac{d}{t}[/tex]
In which v is the velocity, d is the distance, and t is the time.
Car:
[tex]v_{c} = \frac{d_{c}}{t}[/tex]
We have that the car travels 90 miles, so [tex]d_c = 90[/tex]
Then
[tex]v_{c} = \frac{90}{t}[/tex]
[tex]t = \frac{90}{v_{c}}[/tex]
a motorcycle travels 6 mph faster than a sport car.
This means that [tex]v_m = 6 + v_{c}[/tex], so [tex]v_{c} = v_m - 6[/tex]
Travels 99 miles, so [tex]d_m = 99[/tex]
[tex]v_{m} = \frac{99}{t}[/tex]
Since [tex]t = \frac{90}{v_{c}}[/tex] and [tex]v_{c} = v_m - 6[/tex], we have that [tex]t = \frac{90}{v_{m} - 6}[/tex]
So
[tex]v_{c} = \frac{99}{t}[/tex]
[tex]v_{m} = \frac{99}{\frac{90}{v_{m} - 6}}[/tex]
[tex]v_m = \frac{99(v_{m} - 6)}{90}[/tex]
[tex]99(v_{m} - 6) = 90v_m[/tex]
[tex]99v_m - 594 = 90v_m[/tex]
[tex]9v_m = 594[/tex]
[tex]v_m = \frac{594}{9}[/tex]
[tex]v_m = 66[/tex]
The speed of the motorcycle is 66 miles per hour.
How much is 3/4 of four dozen
Answer:
36
Step-by-step explanation:
Just add 12+12+12 or 12x3
Answer:
36
Step-by-step explanation:
bro if a dozen is 12 then add it 4 times it comes 48 then 3/4 is 36
Find the product of the
L.C.M and H.C.F of 8 and 12.
Answer:
96 is the answer.Step-by-step explanation:
The L.C.M of 8 and 12 is 24The H.C.F of 8 and 12 is 4We multiply 24 *4 we shall get 96 as the answer.Answer:
24*4=96
Step-by-step explanation:
lcm of 8 and 12 is 24
hcf of 8 and 12 is 4
24 times 4 = 96
Which choices are common factors of the numerator and denominator of the
fraction below? Check all that apply.
6/24
A.2
B.12
C.3
D.4
E.1
F.6
I need help guys
Answer:
2, 3, 6, 1
Step-by-step explanation:
common factors of 6 are 1, 2, 3, 6
common factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24
so both 6 and 24 have common factors of 1, 2, 3, 6
The PE teacher has a ratio of 3 girls to 2 boys in one of her classes. If there are 24 girls how many boys are there?
a.
12 boys
c.
32 boys
b.
16 boys
d.
20 boys
Answer:
16 boys
Step-by-step explanation:
Answer:
16 boys
Step-by-step explanation:
24 x 2 = 48
48/3 = 16
4x5:):):):):):):)free
Answer:
The answer is 20
Step-by-step explanation:
Can i have brainiest
Answer:
20! thank you for the free points I hope you're having a great day and enjoy the rest of your day and stay safe and make sure you don't get sick!
Frank is going to plant y vegetable seeds in one garden and 2y + 10 vegetable seeds in another.
How many seeds is Frank going to plant?
Frank is going to plant blank seeds.
Answer:
[tex] 3y + 10 [/tex]
Step-by-step explanation:
The total number of seeds Frank will plant in both gardens all together would be:
[tex] y + 2y + 10 [/tex]
Add like terms together to simplify the expression
[tex] 3y + 10 [/tex]
Frank is going to plant [tex] 3y + 10 [/tex] seeds
pls ANSWER if you actually know the answer
Answer:
The rate's aren't equivalent.
Step-by-step explanation:
If you find a common number of hours between the two expressions such as 24 hours you will see that the pay isn't the same. $24 for 6 hours of work ($4:1hr) can be turned into $96 for 24 hours of work and $36 hours for 8 hours of work ($4.5:1) turns into $108 for 24 hours of work.
which inequality shows the relationship between the plotted points on the number line
Answer:
I hope this help you!!! if it doesn't im sorry
There are 26 letters in the English language and 24 in Korean. What is the ratio
Answer:
26:24
Step-by-step explanation:
is this what you mean
Answer:
Well the ratio fro English to Korean is
13:12 (simplified)
the ratio for Korean to English is
12:13 (simplified)
Equation 1:
X-3 = 2-4x
Which of these have the same solution as Equation 1?
Explain your reasoning.
Equation A:
2x-6 = 4-8x
Equation B:
X-5 = -4x
I
Equation C
2(1-2x) = x-3
Equation D:
-3 = 2-5x
Answer:
since equation 1 says that X= 1
any other equation saying x=1 will be valid!
Equation A
Equation B
Equation C
Equation D
all correct
Solve for K 2(k - 5) + 3k = k + 6
Answer:
k = 4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of EqualityAlgebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
2(k - 5) + 3k = k + 6
Step 2: Solve for k
Distribute 2: 2k - 10 + 3k = k + 6Combine like terms: 5k - 10 = k + 6Subtract k on both sides: 4k - 10 = 6Add 10 on both sides: 4k = 16Divide 4 on both sides: k = 4Step 3: Check
Plug in k into the original equation to verify it's a solution.
Substitute in k: 2(4 - 5) + 3(4) = 4 + 6(Parenthesis) Subtract: 2(-1) + 3(4) = 4 + 6Multiply: -2 + 12 = 4 + 6Add: 10 = 10Here we see that 10 does indeed equal 10.
∴ k = 4 is the solution to the equation.
Find the solution for the system of the equation c=-t+2 and c=-4t-4
Answer:it’s a I think
Step-by-step explanation:
Elijah is taking a multiple choice test with a total of 100 points available. Each question is worth exactly 2 points. What would be Elijah's test score (out of 100) if he got 8 questions wrong? What would be his score if he got xx questions wrong?
Answer:
84 points
y= 100-2x where y= total score (0 through 100) and x= # of questions wrong (0 through 50)
Step-by-step explanation:
100- 2(8) = y
100-16 = y
84=y
Since each question (x) is worth two points (2) we have to multiply each wrong question by two (2x). And then since we're deducting point from the possible points (100) we have to subtract (100-2x)
Answer:
Step-by-step explanation:
1.
5.
A set of data consists of 3, 3, 6, 4, and 9. The
median for these data is
A.
6
B.
5
C. 3
D. 4
You invested $12,000 and earned 7.5% interest, which was compunded continuously. If you had $23,568.40 at the end of the investment, how
long was the investment for?
Answer:
9 years
Step-by-step explanation:
Formula for continuous compounding is;
Total amount after the compounding period = P + P[(e^(rt)) - 1]
Where;
P = principal
r is interest rate
t is time period of compounding
We are given;
P = $12,000
Interest rate; r = 7.5% = 0.075
Time; t =?
Amount after investment; $23,568.40
Thus;
23568.40 = 12000(1 + [(e^(0.075t)) - 1])
(1 + [(e^(0.075t)) - 1]) = 23568.40/12000
[(e^(0.075t)) - 1] = (23568.40/12000) - 1
[(e^(0.075t)) - 1] = 0.964
(e^(0.075t)) = 1 + 0.964
(e^(0.075t)) = 1.964
0.075t = In 1.964
0.075t = 0.67498
t = 0.67498/0.075
t = 9 years
You have $4.10 and would like to buy some almonds .if a pond costs $8, how many ounces can you buy ?
Answer:
Step-by-step explanation:
we know that 1 lb=16oz
16 oz almonds = costs 8 dollars , we divide the cost to oz
8/16=0.5 dollars / oz
4.10/0.5=8.2 oz
for 4.10 dollars you buy 8.2 oz
What is the equation of the line that goes through the points (-5,-1) and (5,5)?
ОА.
8
3
Y = gr
2
y
B.
x + 3
Ос.
y =
+2
0
D.
y =
= ft – 7
The answer is y = 3/5x + 2
Equation of the line that goes through the points (-5, -1) and (5, 5) is y = [tex]\frac{3}{5}[/tex] x + 2.
What is Slope?Slope of a line is defined as the tangent of the angle that the given line is making with the X axis.
Slope of a line is usually denoted by the letter 'm'.
m = tan θ, where θ is the angle.
Slope of a line passing through the points (x1, y1) and (x2, y2) is,
m = (y2 - y1) / (x2 - x1)
Here we have two points (-5, -1) and (5, 5)
m = (5 - -1) / (5 - -5) = 6 / 10 = 3/5
Equation of a line in point slope form is,
y - y₁ = m (x - x₁), where (x₁, y₁) is a point on the line.
We take a point (5, 5)
y - 5 = [tex]\frac{3}{5}[/tex] ( x - 5)
y - 5 = [tex]\frac{3}{5}[/tex] (x) - [tex]\frac{3}{5}[/tex] (5)
y - 5 = [tex]\frac{3}{5}[/tex] (x) - 3
y = [tex]\frac{3}{5}[/tex] x - 3 + 5
y = [tex]\frac{3}{5}[/tex] x + 2
Hence the equation of the line passing through the points (-5, -1) and (5, 5) is y = [tex]\frac{3}{5}[/tex] x + 2.
To learn more about Slope, click on the link:
https://brainly.com/question/3605446
#SPJ5
Please help im not smart at all lol
Answer:
1/2 ( 10x + 8 )
Step-by-step explanation:
first make sure everything in the parenthesis is addition. by doing this you make the 6 and 8x negatives. so it's 1/2 ( 13x + 5x + -6 + -8 + 14 ) then combine the numbers with the variable x so 13x + 5x + -8x = 10x . then the ones without variables -6 + 14 = 8. so 1/2 ( 10x + 8)
Louis is a pizza delivery driver. He made $72 in tips on Friday night, and earns an hourly wage of $4. Create an equation to represent his earnings.
Step-by-step explanation: The keyword is hourly. Since the keyword is hourly, the equation is division.
72 / 4
1. 4 goes into 7 once.
1a. 72 / 4 = 1
2. Now we multiply 4 by 1.
2a. 4 x 1 = 4
3. Now, we subtract 7 by 4.
3a. 7 - 4 = 3
4. Now bring down the 2.
4a. 3 = 32
5. Then you repeat the process!
We'll do the last one step-by-step!
1. 2 goes into 4, 8 times.
1a. 72 / 4 = 18
2. Multiply 8 by 4.
2a. 8 x 4 = 32
3. Lastly, subtract 32 by 32.
32 - 32 = 0
Therefore, your answer is 18 R0.
What is the solution to the system of equations below?
Answer:
the answer is d
Step-by-step explanation:
which equation is parallel to the line y= -5/7x - 7
Answer:
5x + 7y = -42
Step-by-step explanation:
This question will be a little easier to answer if we change the form of the original equation from slope intercept to standard form:
[tex]y=(-5/7)x-7\\(5/7)x+y=-7\\5x+7y=-49[/tex]
All parallel lines have the same slope, but what does that mean when our equation's in standard form. Well, slope only depends on the coefficients of the x and y terms, so any equation of a line in standard form with 5x + 7y on the left side will be parallel to the one in the problem. Looking through the possible choices, B. 5x + 7y = -42 is the only one that works.
Using desmos to check our work, we can see that the two lines are actually parallel!
Cedric lives in an apartment and pays the following expenses each month: electric bill, $33.90; TV streaming service, $24.99; and rent, $538.95. Estimate his total expenses for the month by first rounding each value to the nearest tens place.
Answer:
Chyba 600,90zł
Step-by-step explanation:
Pls help this is due in 15 minutes I’ll brainlest for the right answer
- increase
because 80 is greater than 50.
50 - 80
----------- = 30/50 = 0.6
50
answer:
- the change is an increase by 60%
Answer:
increase of 60%
Step-by-step explanation
The change from 50 to 80 is an increase of 30
To calculate percentage increase
[tex]\frac{change}{original}[/tex] × 100%
= [tex]\frac{30}{50}[/tex] × 100%
= 60% increase
PLEASE HELP I WILL GIVE BRAINLIEST!!!
5. find the measure of each indicated angle show your work
Answer: a=126, b=134, c= 110, d=146, e=46
Step-by-step explanation:
so for a you take 180-54 and that gives you A
for b you take 33,70,and A(126) and add them together then subtratct by 360 and you get b for d you take 180-33 and get 146 for c you take 180-70 and get 110 and for e you take 180 - 134(B) and you get tha answer to e
