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Related Questions
[tex]4x^{2} -4x-80=0[/tex]
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Answer:
4(x^2-x-20)=0
4(x-5)(x+4)=0
x=5,-4
Step-by-step explanation:
Help me plz thank u
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Answer:
32
Step-by-step explanation:
2x+6=5x-9
3x=15,
x=5
2(5)+6=10+6=16
5(5)-9=25-9=16
16+16=32
the quotient of a number and 0.2 is -2.6
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help me asapppp ‼️‼️‼️‼️
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Answer:
150.8
pie(48/2)^2
when you add 3/5 and 1/5 what is the answer
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Answer:
4/5
Step-by-step explanation:
Answer:
4/5
Step-by-step explanation:
the denominator stays the same since they are both the same value.
so baisically you just add the numerator.
The third term of an arithmetic sequence is-8, and the sum of the first 10 terms of the sequence is -230. Find:
a. the first term of the sequence.
b. the sum of the first 13 terms.
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Answer:
The first term of the sequence is a = 4
The sum of the first 13 terms is -480
Step-by-step explanation:
Given that:
The third term is: a + 2d = - 8 --- (1)
[tex]The \ sum \ of \ the \ first \ 10 \ terms \ is:[/tex]
[tex]-230 = \dfrac{10}{2}[2a+ (10-1)d][/tex]
[tex]-230 =5[2a+ (9)d][/tex]
-230 = 10a + 45d
10a + 45d = -230 ----(2)
From (1) and (2)
a + 2d = - 8
10a + 45d = -230
From (1), let a = -8 - 2d
Replace, the value of a in (1) to equation (2)
10(-8 -2d) + 45d = -230
-80 -20d +45d =-230
25d = -230 + 80
25d = -150
d = -150/25
d = -6
From equation (1);
a + 2(-6) = -8
a -12 = -8
a = -8 + 12
a = 4
Thus,the first term of the sequence a = 4
[tex]The \ sum \ of \ the \ first \ 13 \ terms \ is:[/tex]
[tex]S_n = \dfrac{n}{2}[2a+(n-1)d][/tex]
[tex]S_n = \dfrac{13}{2}[2(4)+(13-1)*-6][/tex]
[tex]S_n =7.5 [8+(12)\times -6][/tex]
[tex]S_n =7.5 [8-72][/tex]
= -480
Here are the numbers of times 9 people ate out last month.
3, 4, 3, 3, 7, 5, 5, 7, 7
Find the modes of this data set.
If there is more than one mode, write them separated by commas.
If there is no mode, click on "No mode."
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Answer:
3, 7
Step-by-step explanation:
I remember "Hey diddle diddle the medians the middle, you add then divide for the mean, the mode is the one that appears the most and range is the difference between!
i can’t explain my explanation but this is the answer
Edwin rented for movies for the weekend. DVDs cost two dollars to rent and Blu-ray cost five dollars to rent. If Edwin paid $11 which system of equation can be used to determine X, the number of DVDs rented and y, the number of Blu-ray rented?
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Answer:
Step-by-step explanation:
The actual sum was 3 DVDs and 1 BlueRay.
x + y = 4
2x + 5y = 11
No systems are given, but you can look for something that looks like the above 2 equations.
A 24-1b turkey costs $21.36. Assuming the costs are proportional, how much would a 17.5 lb turkey cost?
A stuffing recipe takes 40 min to bake. A sweet potato pie recipe takes twice as long as the stuffing recipe. If a sweet potato pie goes in the oven at 11:50 am, what time will the sweet potato pie be done baking?
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Answer: A. $15.5
B. 1:10 pm
Step-by-step explanation:
A. We will use the formula,
y = kx
where,
y = cost of turkey = $21.36
x = weight of turkey = 24.1lb
k = constant of proportionality
Therefore,
21.36 = 24.1k
k = 21.36/24.1
k = 0.8863
A 17.5 lb turkey would then cost:
= 17.5 × 0.8863
= $15.5
B. A stuffing recipe takes 40 min to bake. A sweet potato pie recipe takes twice as long as the stuffing recipe. If a sweet potato pie goes in the oven at 11:50 am, what time will the sweet potato pie be done baking?
Since the sweet potato pie recipe takes twice as long as the stuffing recipe. This means it'll take:
= 2 × 40minutes
= 80 minutes
= 1 hour 20 minutes
When the sweet potato pie goes in the oven at 11:50 am, the time that it will take the sweet potato pie to be done baking will then be:
= 11.50 am + 1 hour 20 minutes
= 01:10 pm
Answer:
..........
Step-by-step explanation:
needs points out of them srry
Zachary is currently in Mojave National Park in Nevada, which is 150 miles from Los Angeles, CA W he is now riding at a rate of .2 miles per hour, then choose an equation that represents his distance, d. from Los Angeles in hours,
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Answer:
D(miles) = 150 miles - 0.2mph(x hours)
or
D = 150 - 0.2x
Step-by-step explanation:
In order to form an equation to represent the situation, you must know that the equation of a line is equal to
y = mx + b
In which m is the rate of change and b is the y-intercept (what y = when x is 0).
Since Zachary is riding at a rate of 0.2 miles per hour towards California, his distance from LA is decreasing by 0.2 miles every hour.
If x represents the number of hours passed, m = -0.2 miles per hour.
Second, since Mojave is 150 miles away from LA, you know that b is equal to 150; when the x is 0 (time = 0 hours, Zachary has not started riding towards LA), y is 150 miles.
In conclusion, by plugging in values for the slope and y intercept, the final equation you get is:
y = 150 - 0.2x
or
y = -0.2x + 150
Answer:
speed=distancextime
distance=speed÷time
Need help plz and thank you
Answers
Answer:
B
Step-by-step explanation:
When 5 is added to a number n, the result is greater than 11. Which inequality can be used
to find the values of n?
n +5 < 11
n +5 > 11
n +5 > 11
n + 5 < 11
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9514 1404 393
Answer:
n + 5 > 11
Step-by-step explanation:
When 5 is added to a number n, the expression representing that sum is ...
5 + n
When that is greater than 11, the expression representing that comparison is ...
5 + n > 11
16b + 36 Factor completely
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Answer:
4(4b+9)
Step-by-step explanation:
Eliza started her savings account with $100. Each month she deposits $25 into her account. Determine the average rate of change in Eliza's account from the 2nd month to the 10th month. Show all work for full credit.
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Answer:
25
Step-by-step explanation:
First, lets create a equation for our situation. Let x be the months. We know four our problem that Eliza started her savings account with $100, and each month she deposits $25 into her account. We can use that information to create a model as follows:
25x+100
We want to find the average value of that function from the 2nd month to the 10th month, so its average value in the interval [2,10].
We can conclude that the average rate of change in Eliza's account from the 2nd month to the 10th month is $25.
The work is below in a png.
Answer:Answer:
25
Step-by-step explanation:
First, lets create a equation for our situation. Let x be the months. We know four our problem that Eliza started her savings account with $100, and each month she deposits $25 into her account. We can use that information to create a model as follows:
25x+100
We want to find the average value of that function from the 2nd month to the 10th month, so its average value in the interval [2,10].
We can conclude that the average rate of change in Eliza's account from the 2nd month to the 10th month is $25.
The work is below in a png.
Step-by-step explanation:
answer for brainliest
Answers
Answer:
average rate of change is 3/2
Step-by-step explanation:
Recall that the average rate of change in an interval [x1, x2], is defined as:
[f(x2)-f(x1)] / (x2 - x1)
which for the interval [0, 2] becomes:
[f(2)-f(0)] / (2 - 0)
From the graph we read that f(0)= 1 and f(2) = 4, therefore:
[f(2)-f(0)] / (2 - 0) = [4 - 1] / 2 = 3/2
If an item is discounted 20%, the sale price is what percent of the original price
Answers
Please help! The image is below
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Answer:
B
Step-by-step explanation:
If diego can type 140 words in give minutes
how many words can he type in 15 minutes
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Answer:
2100
Step-by-step explanation:
A flower garden is shaped like a circle. Its radius is 20 yd . A ring-shaped path goes around the garden. The width of the path is 5 yd .
The gardener is going to cover the path with sand. If one bag of sand can cover 7 yd^2 , how many bags of sand does the gardener need? Note that sand comes only by the bag, so the number of bags must be a whole number. (Use the value 3.14for .)
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Answer:
111 bags
Step-by-step explanation:
101 bags of sand are required to cover the path.
What is ratio?Ratio basically compares quantities, that means it shows the value of one quantity with respect to the other quantity.
If a and b are two values, their ratio will be a:b,
Given that,
Radius of garden r = 20 yards,
The width of path around the garden = 5 yards.
The area of garden = π×r² = π×20*20
The area of garden surrounded with path = π×25×25
Area of path = area of garden surrounded with path - area of garden
Area of path = π×25×25-π×20*20
Area of path = 225π =225×3.14
Since, 1 bag of sand covers 7 square yards.
Total area is 225×3.14 square yards.
Number of bags = (225×3.14)/7 = 100.92 = 101 (approx.)
101 bags of sand are required to cover the path.
To learn more about Ratio on :
https://brainly.com/question/13419413
What is the area of the sandbox cover
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What is 31.9 estimated by 4
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Answer:
Ok when you are estimating you basically make all the numbers have no decimal or turn them all to tens. For this question you have to make 31.9 have no decimal so you turn it into 32. Then you divide 32 and 4. That equals 8. So 8 is your answer :)
Step-by-step explanation:
...
D) Read the problem.
()) 10% of the students at Harris Middle School are on the yearbook committee. If 30
students are on the yearbook committee, how many students are at Harris Middle
School?
Pick the model that represents the problem.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90% 100%
0
30
?
0%
10%
20%
30%
40%
50%
60%
70%
80%
90% 100%
0
10
?
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Answer:
300
Step-by-step explanation:
10% of x = 30
0.1x = 30
x = 30/0.1
x = 300
There are 300 students.
You selected a card from a standard deck and replace it. You repeat this experiment for a total of 10 times. Find the probability of selecting exactly 6 clubs.
Answers
Answer:
2/10?
Step-by-step explanation:
3. Rachael is baking cookies. Her recipe calls for 2 cups
of chocolate chips and feeds 8 people. How many cups of
chocolate chips should she use for 2 guests?
Answers
Answer:
She should use 1/2 cup of chocolate chips.
Step-by-step explanation:
If she uses 2 cups for 8 people, that means
2 x 4 =8
So, all you have to do is,
? x 4 = 2
0.5 x 4 = 2
0.5 = 1/2
She should use 1/2 cup of chocolate chips
Determine the type and number of solutions: 5x2−3x−4=0
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Answer:
Being a quadratic equation, this will always have two solutions. In this case, they are complex numbers, 0.3 + 0.84261497731764i
0.3 - 0.84261497731764i.
Required
What is the solution for the system below:
y = x + 1 and y = x + 1
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Answer:
Y TO THE POWER 3 BY DIVIDING Y ON BOTH SIDES YOU WILL GET Y TO THE POWER 3
Step-by-step explanation:
find the solutions to x^2=27.
Answers
Answer: 3√3 , -3√3
Step-by-step explanation:
Answer:
+/-3 √3
Step-by-step explanation:
:p
y=-3x2 + 18x + 10 what is the axis of symmetry step by step?
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Answer and Step-by-step explanation:
[tex]\frac{-b}{2a}[/tex] is the equation to find the axis of symmetry of a quadratic equation.
[tex]y = -3x^{2} + 18x + 10[/tex]
-3 = a
18 = b
10 = c
Now we plug the values into the equation.
[tex]\frac{-(18)}{2(-3)} \\\\\\\frac{-18}{-6} \\\\\\3[/tex]
The axis of symmetry is on the line x = 3.
#teamtrees #WAP (Water And Plant)
answer this in the next 4 min for free brainly
An 18-foot ladder is leaning against the side of a building forming a right triangle. The angle formed by the ladder and the ground is 60°. Which is closest to the distance, in feet, of the bottom of the ladder from the base of the wall?
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Answer:
10-Feet My fellow friend.
Step-by-step explanation:
The foot of the ladder is
10
feet away from the base of the wall.
Explanation:
Here , the wall , top and foot of the ladder and ground makes a
right triangle of which length of ladder h=18 is regarded as
hypotenuse angle with ground is
θ=60°;cos 0= b/h or
cos 60°=b/18or b=18.cos 60=18.1/2
=9 feet
Can y’all help me on 2 and 4
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Hope this helps.
