the answer is 47.25. trust me, its pretty obvious
Slope Intercept: y= -6x - 3/2
what is the standard form?
Answer:
12x+2y=-3
Step-by-step explanation:
y=-6x-3/2
-6x-y=3/2
2(-6x-y)=2(3/2)
-12x-2y=6/2
-12x-2y=3
12x+2y=-3
Y=-16t^2+8t
the function represents the height y (in feet) of a grasshopper jumping straight up from the ground t seconds after the start of the jump.
After how many seconds is the grasshopper 1 foot off the ground
The grasshopper is 1 foot off the ground after ___ seconds
Answer:
1/4th of a second, or .25 seconds
Step-by-step explanation:
graphed it.
The grasshopper is 1 foot off the ground after 0.25 seconds.
What is Function?A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.
The given function is,
f(t) = -16t² + 8t
This represents the height y (in feet) of a grasshopper jumping straight up from the ground t seconds after the start of the jump.
We have to calculate the time t when f(t) = 1 foot.
-16t² + 8t = 1
-16t² + 8t - 1 = 0
This is a quadratic equation.
Solve using quadratic formula.
Discriminant = [tex]\sqrt{8^2-(4*-16*-1)}[/tex] = 0
t = (-8 ± 0) / (2 × -16) = -8/-32 = 0.25
Hence the time is 0.25 seconds when the grasshopper is at 1 foot.
Hence the grasshopper will be at 1 foot from the ground in 0.25 seconds.
Learn more about Quadratic Functions here :
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What is the equation of a vertical line that passes through the point (3, -5)?
X = 3
X=-3
X= -5
X= 5
Answer: A. X = 3
Step-by-step explanation:
Since the line passes through the point (3, -5), this pair of coordinates must satisfy the equation of the line.
Glancing through the answer choices, the only one that works is option A since the X coordinate of 3 satisfies the equation of X = 3.
hope this helps :)
Grapes cost $2.59 per pound. James buys a bag of grapes that weighs 4.73 pounds.
How much does the bag of grapes cost?
2.59 * 4.73 = cost of grapes
2.59 * 4.73 = 12.2507
$12.25 for that bag
13 lb 7 Oz + 10 lb 2 Oz
Answer:
23 lb 9 Oz
Step-by-step explanation:
13 lb 7 Oz + 10 lb 2 Oz = 23 lb 9 Oz
13 lb + 10 lb = 23 lb
7 Oz + 2 Oz = 9 Oz
16 Oz = 1 lb
help me pleaseeeeeeeeeeee
Answer:
76
Step-by-step explanation:
180-(56+48)
put in calculator
76
What is 89% of 260 sec?
pls help
Answer:
3.85666667 minutes of 260sec
Hey there!
89% of 260
= 89/100 of 260
= 89/100 * 260/1
= 23,140 / 100
= 23,140 ÷ 20 / 100 ÷ 20
= 1,157 / 5
= 231 2/5
≈ 231.4
Therefore, your answwr should be: 231.4
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Im so close- but i seriously have tried every answer i can think of
Answer:
n = 8
Step-by-step explanation:
3n = 24
÷3 ÷3
n = 8
I hope this helps!
A coffee machine was bought for £2,000, it depreciates in value by 8% each year. How much is it worth after 3 years?
What fraction of the DVDs in Andy's collection is not "Áction" or "Comedy?"
Show your work.
Answer:
x=3/20
Step-by-step explanation:
in a class of 36 students, 12 are boys the percentage of girls in the class is?
A bat flies 180 feet in 20 seconds. At this rate, how far can it fly in 30 seconds?
Answer:
270
Step-by-step explanation:
To solve this, we use the unitary method.
Distance flown in 20 sec = 180
Distance flown in one sec = [tex]\frac{180}{20}[/tex] = 9
Thus, distance flow in 30 secs = 9 × 30 = 270
I think this is the answer. Hope its correct :)
Have a great day!
A librarian is rearranging the bookshelves and notices that the pair of bookends on the shelf are not the same size. The librarian then notices that the bookends create similar triangles.
Two triangular book ends. The right angles are shown. The bottom right angle of the triangle are marked congruent to each other. The larger bookshelf has a height of 10 inches and a diagonal height of 12 inches. The smaller bookshelf has a height of 6 inches and a diagonal height labeled x.
What is the length of the diagonal, x, created by the smaller bookend?
27.2 in.
7.2 in.
20 in.
5 in.
Answer:
Its 20 inches
Step-by-step explanation:
help plsssssssssssssssssssssss
Answer:
12.57
Step-by-step explanation:
this is because is ten more times as big as the 5 in the question
A computer company claims that the lifespan of its batteries is 2. 7 years. The population standard deviation is 0. 85 years. A sample of 25 batteries was tested, and their mean lifespan was 3. 1 years. Using a 95% confidence level, determine if the company's claim is correct. Reject the null hypothesis. There is enough evidence to oppose the company's claim. Fail to reject the null hypothesis. There is enough evidence to oppose the company's claim. Reject the null hypothesis. There is not enough evidence to oppose the company's claim. Fail to reject the null hypothesis. There is not enough evidence to oppose the company's claim
Using the z-distribution, as we have the standard deviation for the population, it is found that the correct decision is given by:
Reject the null hypothesis. There is enough evidence to oppose the company's claim.
What are the hypothesis tested?At the null hypothesis, it is tested if the mean is of 2.7 years, that is:
[tex]H_0: \mu = 2.7[/tex]
At the alternative hypothesis, it is tested if the mean is different of 2.7 years, hence:
[tex]H_1: \mu \neq 2.7[/tex]
What is the test statistic?The test statistic is given by:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
The parameters are:
[tex]\overline{x}[/tex] is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.[tex]\sigma[/tex] is the standard deviation of the sample.n is the sample size.In this problem, the values of the parameters are given by:
[tex]\overline{x} = 3.1, \mu = 2.7, \sigma = 0.85, n = 25[/tex]
Hence, the value of the test statistic is given by:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{3.1 - 2.7}{\frac{0.85}{\sqrt{25}}}[/tex]
[tex]z = 2.35[/tex]
What is the decision?Considering a two-tailed test, as we are testing if the mean is different of a value, with a significance level of 0.05, the critical value is of [tex]|z^{\ast}| = 1.96[/tex].
Since the absolute value of the test statistic is greater than the critical value, the correct decision is:
Reject the null hypothesis. There is enough evidence to oppose the company's claim.
More can be learned about the z-distribution at https://brainly.com/question/16313918
Answer:
Reject the null hypothesis. There is enough evidence to oppose the company's claim.
Step-by-step explanation:
The test statistic needs to fall within the rejection regions that are above and below the critical z-score associated with a 5% level of significance in order to reject the null hypothesis. Otherwise, we will fail to reject the null hypothesis.
Guadalupe went shopping for a new pair of pants. Sales tax where she lives is 7%. The price of the pair of pants is $33. Find the total price including tax. Round to the nearest cent.
Answer:
Step-by-step explanation:
Image result for Guadalupe went shopping for a new pair of pants. Sales tax where she lives is 7%. The price of the pair of pants is $33. Find the total price including tax. Round to the nearest cent.
Step 1: take the total price and divide it by one plus the tax rate.
Step 2: multiply the result from step one by the tax rate to get the dollars of tax.
Step 3: subtract the dollars of tax from step 2 from the total price.
Pre-Tax Price = TP – [(TP / (1 + r) x r]
TP = Total Price.
The price of the pants after tax is $35.31
What are percentages?A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate the percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word percent means per 100. It is represented by the symbol “%”
Given here: Price of the pants before tax= $33 and tax rate as 7%
Thus 7% of 33=2.31
Thus price after tax is equal to $33+$2.31=$35.31
Hence, The price of the pants after tax is $35.31
Learn more about percentages here:
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Samir works in a department store selling clothing. He makes a guaranteed salary of $300 per week, but is paid a commision on top of his base salary equal to 15% of his total sales for the week. How much would Samir make in a week in which he made $1275 in sales? How much would Samir make in a week if he made xx dollars in sales?
Answer:
$491.25 and 0.15xx + 300
Step-by-step explanation:
15%=0.15
$1275×0.15=$191.25 in sales
$191.25+$300=$491.25
He would make $491.25 a week in which he made 1275 in sales.
0.15xx + 300 = total earnings
He would make 0.15xx + 300 if he made xx dollars in sales
Find all numbers whose absolute value is -9.
If there is more than one, separate them with commas.
If there are no such numbers, click on "None".
Answer:
-9 and 9
Step-by-step explanation:
|-9| = 9
|9| = 9
Only -9 and 9 can have an absolute value of 9
This figure represents a small wooden container. What is the volume of the container? 66 cm³ 110 cm³ 132 cm³ 330 cm³
Answer:
66cm³
Step-by-step explanation:
To find the volume of this triangular prism, we have to find the area of the cross-section (in this case, the triangle) and multiply it by the length.
The area of the triangle is 1/2 × base × height:
1/2 × 4cm × 3cm = 6cm²
Next, multiply 6cm by the length:
6cm² × 11cm = 66cm³
Hope this helps!
Answer:
66cm is the correct answer
Step-by-step explanation:
The inequality 10w+40<450 represents the maximum number of ten-pound weights, w, a weight bench can hold if the maximum weight capacity of the bench is less than 450 pounds. The table shows the steps a trainer takes to solve the inequality.
Answer:
v2
Step-by-step explanation:
Choose Yes or No to tell if a rectangle with the given dimensions has an area of
3 _
10
square inch.
Answer:
Yes
Step-by-step explanation:
Answer:
(assuming the question is (Choose Yes or No to tell if a rectangle with the given dimensions has an area of 3/10 square inch. 3/4in. × 2/5 in. 2/5 in. × 5/6 in. 1/10 in. × 1/5 in. /in. × 3/5 in.)
Step-by-step explanation:
yes,no,no,yes
but please do the math yourself for grater effect
Start at (0, 7). Move 3 units north and 1 unit east.
What is the ordered pair of the final point? HELP PLS!!!
Answer:
(1,10)
Step-by-step explanation:
Cause if you move up 3 that's 10 then move east which is to the right so 1 plus 0, which is 1 so (1,10)
Determine whether each expression can be used to find 2. Select Yes or No.
x=12 cos 36
x=12/cos 36
x=12 sin 54
x= 12/sin54
Answer:
If you have the hypotenuse, multiply it by sin(θ) to get the length of the side opposite to the angle. Alternatively, multiply the hypotenuse by cos(θ) to get the side adjacent to the angle. If you have the non-hypotenuse side adjacent to the angle, divide it by cos(θ) to get the length of the hypotenuse.
Step-by-step explanation:
A two-bedroom house in Omaha is now worth $110,000. If it appreciates at a rate of 2.5% per year, how long will it take to be worth $200,000?
i need help with this
Answer:
C. [tex]\sf \dfrac{7}{4}[/tex]
D. [tex]\sf 1\dfrac{3}{4}[/tex]
Explanation:
[tex]\hookrightarrow \sf 4\dfrac{1}{4}-2\dfrac{2}{4}[/tex]
[tex]\hookrightarrow \ \sf \dfrac{17}{4}-\dfrac{10}{4}[/tex]
[tex]\hookrightarrow \sf \dfrac{17-10}{4}[/tex]
[tex]\hookrightarrow \ \sf \dfrac{7}{4}[/tex]
[tex]\hookrightarrow \ \sf 1\dfrac{3}{4}[/tex]
[tex]\hookrightarrow 1.75[/tex]
Answer: 7/4 and 1 3/4
Step-by-step explanation:
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(4, 4) = 4. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 4 × 4 = 16. In the following intermediate step, it cannot further simplify the fraction result by canceling.
In other words - seventeen quarters minus ten quarters = seven quarters.
Quadrilateral ABCD has vertices at A(2,-2), B(5,-2), C(8,-8), D(2,-5). What is the length of AC? (round to the nearest 10th)
Answer:
The answer would be (6, -6)
I hope that helped! :)
Please help me! Due soon!!! Find the GCF:
Answer:
it's 4ab^2
Step-by-step explanation:
b part 4ab^2
are you American??
if yes then please thank my answer
or else you can mark me as brainliest
just curious to know.....
Answer:
[tex]\huge\boxed{\sf 4ab\²}[/tex]
Step-by-step explanation:
Firstly factor out the given expressions:
[tex]8ab^2 = 2 \times \ 2 \times 2 \ a .b.b[/tex][tex]12a^2b^3 = 3 \times 2 \times 2\ a.a.b.b.b[/tex]The common factors in the above expressions:
=> 2,2,a,b,b
So, GCF of the given expressions:
= 2 × 2 × a × b × b
= 4ab²
[tex]\rule[225]{225}{2}[/tex]
Which expression is equivalent to y • 48?
F (y.40) + 8
G (y •4).8
H (y+40)+ (y:8)
J (y •4) + 8
Answer:
The answer is H
Will mark brainliest if your correct
Answer:
42.5 square yards
Step-by-step explanation:
To find the area of this triangle, multiply the perpendicular height by the base and half it.
1/2 × 17 × 5 = 42.5 square yards
Hope this helps!
this might be the last question
Answer:
m = -1/2, y-intercept = -3, x-intercept = -6,0
Step-by-step explanation:
M is the gradient (or slope) and is always in front of the x coefficient. -1/2 in this case.
To find the y-intercept, we have to know that it is at the point where the graph passes through the y-axis. At this point x = 0. So just substitute 0 for x and solve for y to give -3.
To find the x-intercept, do the opposite. When the graph passes through the x-axis, y = 0. So when y = 0, x = -6