Answer:
V≈5321.86
Step-by-step explanation:
An athlete spends 75 minutes a day on a cardio workout and 60 minutes a day on strength workout. The athlete does the cardio workout 20 days in a month, and the strength workout 25 days in the month.
Which equation could be used to find n, the total number of minutes the athlete spends working out in the month?
20 × 75 + 25 × 60 = n
75 × 60 + 20 × 25 = n
20×75−25×60=n
75 + 60 × 25 + 25 = n
PLS PLS PLS HELP I DONT UNDERSTAND THIS AT ALL I WILL GIVE BRAINLIEST!!
Put the following equation of a line into slope-intercept form, simplifying all
fractions.
6y - 3x = 30
Answer:
y=(x/2)+5
Step-by-step explanation:
Slope-intercept form is y=mx+b where m is the slope and b is the y-intercept form. To get that, we need y by itself so we have to add 3x to both sides: 6y=30+3x. Now we divide by 6 and rearrange the right side: y=(3x+30)/6.
y = (3x/6)+(30/6) => y = (x/2)+5. We also know that the slope is 1/2 and the y-intercept is 5 because of the slope-intercept equation.
40 points. I need help with this, so I can explain it to my son. Thank you in advance
The functions of the coefficients of the quadratic equation indicates that the correct statements are;
a. The y-intercept of the function is (0, c)
c. The coefficient b determines the horizontal shift of the parabola compared to the parent function
d. If a is negative, the parabola opens upwards
What are the functions of the quadratic equation?The quadratic equation is; y = a·x² + b·x + c
The functions of the coefficients of the above quadratic function are;
a = The scale factor, and the coefficient that determines the direction the projectile faces.
a < 1; Indicates that the graph is wider than the parent function
a > 1; Indicates that the graph is narrower than the parent function
a < 0; Indicates that the parabola opens downward
a > 0; Indicates that the parabola opens upwards
b = The coefficient b together with coefficients a and c determines the coordinate of the vertex of the graph of the quadratic function, which is; (-b/(2·a), -D/(4·a))
Where;
D = The discriminant
Therefore, b determines the x-value, and therefore, the horizontal shift of the parabola compared to the parent function
c = The y-coordinate of the y-intercept of the quadratic function, which is (0, c)
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Find an equation for the line below.A(5,1) B(-4,5)
The equation of a line has always the form
\(y=m\cdot x+b\)where "m" is called its slope, and "b" is called its y-intercept. It's a well-known fact that m can be calculated using two points of the line. Let's use A and B:
\(m=\frac{-5-1}{-4-(5)}=\frac{-6}{-9}=\frac{6}{9}=\frac{2}{3}\)Then, our equation becomes
\(y=\frac{2}{3}x+b\)Replacing A there, we get
\(\begin{gathered} 1=\frac{2}{3}(5)+b\Rightarrow1=\frac{10}{3}+b\Rightarrow\ldots \\ \ldots b=1-\frac{10}{3}=-\frac{7}{3} \end{gathered}\)Having found m and b, the final answer is
\(y=\frac{2}{3}x-\frac{7}{3}\)Which table is a probability distribution table?
Answer:
The Last One (Yellow/0.3 Orange/0.4 Green/0.15 Purple/0.15)
Step-by-step explanation:
I just took the test and got it right :)
Answer:
Step-by-step explanation:
The 1st table is correct. I put the last choice as my answer and was incorrect.
May I please get help with this math or I have tried several times to get the right answer.
Triangle inequality theorem: the sum of any two sides of a triangle is greater than or equal to the third side.
For the given triangle:
The sum of sides (17) and (19) is greater than or equal to side x:
\(\begin{gathered} 17+19\ge x \\ \\ 36\ge x \end{gathered}\)Find the quotient for 12 ÷ (-4). -3 -48 3
Answer:
-3
Step-by-step explanation:
12/-4=-3
Consider the exponential function f(x) = 3(one-third) Superscript x and its graph.
On a coordinate plane, an exponential function decreases from quadrant 2 into quadrant 1 and approaches y = 0. It crosses the y-axis at (0, 3) and goes through (1, 1).
Which statements are true for this function and graph? Select three options.
The initial value of the function is One-third.
The base of the function is One-third.
The function shows exponential decay.
The function is a stretch of the function f(x) = (one-third) Superscript x.
The function is a shrink of the function f(x) = 3x.
The true statements are; b. The growth value of the function is One-third. c. The function shows exponential decay. d. The function is a stretch of the function. \(f(x) = \frac{1}{3} ^x\)
What is an exponential function?The general form of the exponential function;
\(f(x) = a b ^x\)
where "a" is the initial amount and "b" is the growth factor
The given exponential function
\(f(x) = 3(\frac{1}{3} )^x\)
here,
The initial value is 3
The growth factor is 1/3
The growth factor is less than 1
Therefore, f(x) is exponential decay function.
The true statements are;
b. The growth value of the function is One-third.
c. The function shows exponential decay.
d. The function is a stretch of the function. \(f(x) = \frac{1}{3} ^x\)
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Answer: B C D
Step-by-step explanation:
n
What is the quotient of 13divide 8
Answer:
1
Step-by-step explanation:
mr clean
Answer:
One with a remainder of five.
Step-by-step explanation:
Eight goes into thirteen one time with five remaining
calculate exact value of 4 1/5-(1 1/9 ×3)
Answer:
Exact form - 13/15
Decimal Form - 0.86
Step-by-step explanation:
Convert the mixed numbers to improper fractions, then find the LCD and combine
I will give you the brainliest!!! And 25 points!!!!
Someone solve this for me with explanation please. I need help
The perimeter of the given triangle with given lengths is; 78
What is the perimeter of the triangle?The perimeter of a triangle is defined as the sum total of the 3 side lengths of the triangle.
Now, we are given the triangle as QRS.
We are given that;
A is the midpoint of QR
B is the midpoint of RS
C is the midpoint of SQ
Thus;
QA = RA = 10
BR = SB = 15
SQ = 28
Thus;
Perimeter of Triangle = 2(10) + 2(15) + 28 = 78
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Write each sentence as an equation or inequality. Use x to represent
any unknown number.
seven subtracted from a number is 0
Answer:
x=7
Step-by-step explanation:
unknown number = x
x - 7 = 0
(add 7 to both sides)
x=7
A health insurance company advertises on television, on radio, and in the local newspaper. The marketing department has an advertising budget of $46,400 per month. A television ad costs $1000, a radio ad costs $200, and a newspaper ad costs $600. The department wants to run 64 ads per month, and have as many television ads as radio and newspaper ads combined. How many of each type of ad can the department run each month?
The number of each type of ad that the department can run each month are:
TV Ads = 32
Radio Ads = 12
News Ads = 20
How to solve Simultaneous equation word problems?x = number of tv ads
y = number of radio ads
z = number of news ads
Two formulas are indicated.
x + y + z = 64
1000x + 200y + 600z = 46400
they want as many tv ads as radio and news ads combined.
equation for that is x = y + z
since x = y + z, replace x with y + z in both equations to get;
y + z + y + z = 64
1000 * (y + z) + 200 * y + 600 * z = 46400
combine like terms and simplify to get:
2y + 2z = 64
1000y + 1000z + 200y + 600z = 46400
combine like terms again to get:
2y + 2z = 64
1200y + 1600z = 46400
Solving simultaneously gives:
y = 12
z = 20
Thus:
x = 12 + 20
x = 32
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3 Jack walk from Santa Clara to Polo Allo. Il took I hour 25 min to walk from Santa Clot to Los Altos. Than it took 25 minute of wal from los altos to Palo buto. He arrived in Palo alto at 2:45 P.M. of what time die Santa Clara ? he leave Santa clara
The time Jack left Santa Clara is 1 : 55 pm
What is word problem?A word problem in math is a math question written as one sentence or more. These statements are interpreted into mathematical equation or expression.
The time for Jack to walk to lose Altos is 25 min and he uses another 25mins to work to Palo alto.
Therefore, the total time he spent is
25mins + 25 mins = 50 mins
He arrived Palo at 2 :45 pm, therefore the time he left Santa Clare will be ;
2:45 pm = 14 :45
= 14:45 - 50mins
= 13:55
= 1 : 55pm
Therefore he left at 1:55 pm
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The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 23.5 for a sample of size 775 and standard deviation 12.2. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 95% confidence level). Enter your answer as a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).
The 95% confidence interval for the effectiveness of the blood-pressure drug is given as follows:
\(22.6 < \mu < 24.4\)
How to obtain the confidence interval?The mean, the standard deviation and the sample size for this problem, which are the three parameters, are given as follows:
\(\overline{x} = 23.5, \sigma = 12.2, n = 775\)
Looking at the z-table, the critical value for a 95% confidence interval is given as follows:
z = 1.96.
The lower bound of the interval is then given as follows:
\(23.5 - 1.96 \times \frac{12.2}{\sqrt{775}} = 22.6\)
The upper bound of the interval is then given as follows:
\(23.5 + 1.96 \times \frac{12.2}{\sqrt{775}} = 24.4\)
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HELP I NEED THE ANSWER FAST “NO LINKS”
Answer:
a
Step-by-step explanation:
240
A genetic experiment with peas resulted in one sample of offspring that consisted of 440 green peas and 155 yellow peas.
a. Construct a 95% confidence interval to estimate of the percentage of yellow peas.
b. Based on the confidence interval, do the results of the experiment appear to contradict the expectation that 25% of the offspring peas would be yellow?
The 95 percent confidence interval is (0.20, 0.32).
a. We can construct a 95% confidence interval to estimate the percentage of yellow peas as follows:
Let p = proportion of yellow peas = 155/595 = 0.26
Sample size = n = 595
Standard error = SE = √(p × (1-p) / n) = √(0.26 × (1-0.26) / 595) = 0.03
95% confidence interval = p ± 1.96 × SE
= 0.26 ± 1.96 × 0.03
= 0.26 ± 0.06
So, the 95% confidence interval is (0.20, 0.32).
b. Yes, the results of the experiment appear to contradict the expectation that 25% of the offspring peas would be yellow, as the 95% confidence interval does not include the expected value of 0.25.
Therefore, the 95 percent confidence interval is (0.20, 0.32).
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Find the percent of change for 25 is decreased to 10.
Answer:
60%
Step-by-step explanation:
25-10=15
15÷25=0.6
0.6×100=60
A computer training institute has 625 students that are paying a course fee of $400. Their research shows that for every $20 reduction in the fee, they will attract another 50 students. Which equation could be used to represent this situation, where x is the course fee and R(x) is the total revenue?
R(x) = −2.5x2 + 1625x
R(x) = −3x2 + 1650x
R(x) = 3x2 − 1650x
R(x) = 2.5x2 − 1625x
The equation that could be used to represent this situation, where x is the course fee and R(x) is the total revenue, is: R(x) = 250000 + 375x - 2.5x²
What is an Equations?Equations are mathematical statements with two algebraic expressionsοn either sideοf an equals (=) sign. It illustrates the equality between the expressions writtenοn the left and right sides. To determine the valueοf a variable representing an unknown quantity, equations can be solved. A statement is not an equation if there is no "equal to" symbol in it. It will be regarded as an expression.
N(x) = 625 + 2.5x
The revenue R(x) will be the productοf the numberοf students enrolled and the fee charged per student. The fee charged per student will be (400 - x) dollars. So, the revenue function can be represented as:
R(x) = (625 + 2.5x)(400 - x)
Simplifying the expression, we get:
R(x) = 250000 + 375x - 2.5x²
Therefore, the equation that could be used to represent this situation, where x is the course fee and R(x) is the total revenue, is:
R(x) = 250000 + 375x - 2.5x²
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Which statement accurately describes the relationship between JKL and MNP?
The triangles are not similar
Given data ,
Let the first triangle be ΔJKL
Let the second triangle be ΔMNP
Now , the corresponding sides are
JK / JL ≠ NM / MP
where the corresponding sides of similar triangles are not in the same ratio
And , the common angle to both the triangles is ∠J = ∠M
So , ∠J = ∠M and JK / JL ≠ NM / MP
Hence , the triangles are not similar
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choose the general algebraic representation (notation) for transforming pentagon vwxyz into pentagon qrstu.
The transformation function can be represented as vwxyz \($\rightarrow$\)qrstu = (v,w,x,y,z) \($\rightarrow$\) (q,r,s,t,u).
This algebraic representation of the transformation of pentagon vwxyz into pentagon qrstu is using the notation of a function. A function takes an input (in this case, the coordinates of pentagon vwxyz) and produces an output (in this case, the coordinates of pentagon qrstu). This transformation can be represented by the notation (v,w,x,y,z) \($\rightarrow$\) (q,r,s,t,u). This notation means that the coordinates (v,w,x,y,z) are being transformed into the coordinates (q,r,s,t,u). This notation is a concise way of expressing the transformation of pentagon vwxyz into pentagon qrstu. It is important to note that the transformation itself is not specified; the notation is simply used as a way of representing the transformation.
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fourth degree and a single zero of -3
The degree of a polynomial is the highest power of the polynomial.
The polynomial is \(\mathbf{P(x) = (x + 3)^4}\)
The degree is given as:
\(\mathbf{n = 4}\)
The zero is given as:
\(\mathbf{x = -3}\)
Add 3 to both sides
\(\mathbf{x + 3= 0}\)
From the question, we understand that the polynomial has a single zero.
So, the polynomial is:
\(\mathbf{P(x) = (x + 3)^n}\)
Substitute 4 for n
\(\mathbf{P(x) = (x + 3)^4}\)
Hence, the polynomial is \(\mathbf{P(x) = (x + 3)^4}\)
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I need help with this.
Answer:
D=4
C=12.56
Step-by-step explanation:
D=2r
d=2×2
D=4
C=pi ×D
C=3.14×4
C=12.56
<, >, or =.
if you don't know it don't do it or i report you to brainly
help me please
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Answer:
>
Step-by-step explanation:
When it is converted it is -4.4
Answer:
<
Step-by-step explanation:
it's -4.4 converted but as it's negative the larger the number the smaller the value
If 1 shoe equals 6.5 socks, how many socks are equivalent to 2.3 shoes?
The equivalent number of socks to 2.3 shoes is 14.95 socks
Ratio and proportionsFractions are expression written as a ratio of two integers. For instance If 1 shoe equals 6.5 socks, this can be written as:
1 shoe = 6.5 socks
In order to determine the number of socks for 2.3 shoes, we will have:
2.3 shoes = x socks
Determine the ratio
1/2.3 = 6.5/x
Cross multiply
1 * x = 2.3 * 6.5
x = 2.3 * 6.5
x = 14.95
Hence the equivalent number of socks to 2.3 shoes is 14.95 socks
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3 + 5r = −47 plz help
Answer:
r= -10
Step-by-step explanation:
3+5r=-47
-3 -3
5r=-50
/5 /5
r=-10
Four men built a wall in 12 days. How long would it take 6 men to build the same wall working at the same pace?
Answer:
6 days
Step-by-step explanation:
Ratio 4:12
Ratio 6:x
4*? = 6
6/4 =1.5
12*1.5 = 18
18-12 = 6
6:6
6 days
Answer:
i think 8 or 6
Step-by-step explanation:4 times 12 is 48 and 48 divided by 6 is 8
Step-by-step explanation (2):
Ratio 4:12
Ratio 6:x
4*? = 6
6/4 =1.5
12*1.5 = 18
18-12 = 6
6:6
6 days
I am probably wrong tho
What number lies exactly halfway between 1/5 and 1/9?
Answer:
7/45
Step-by-step explanation:
What number lies exactly halfway between 1/5 and 1/9?
you have to find the mean of the two fractions, adding and then dividing by two
(1/5 + 1/9) : 2 =
14/45 : 2 =
7/45
Can someone help with 11-19 please extra points