Answer:
b
Step-by-step explanation:
Solve for r.
–16r + 15 + 17 = 7(–3r + 16) − 5r
r =
Answer:
r = 8
Step-by-step explanation:
→Distribute the 7 to (-3r + 16):
-16r + 15 + 17 = 7(-3r + 16) - 5r
-16r + 15 + 17 = -21r + 112 - 5r
→Add like terms:
-16r + 32 = -26r + 112
→Add 26r to both sides:
10r + 32 = 112
→Subtract 32 from both sides:
10r = 80
→Divide both sides by 10:
r = 8
Answer:
Step-by-step explanation:
-16r +15+17= 7(-3r+16)-5r
-16r+32 = -21r +112-5r
-16r +26r=112-32
10r =80
r=80/10
r=8
mark me as the brainliest and hope it helps you..
Can someone please explain to me what quadrants on a coordinate plane means, for brainliest and some points.
In Mathematics is 5n a monomial?
Answer:
yes
Step-by-step explanation:
because monomials can be numbers variables and numbers together with variables
Answer:
5n should be a monomial i think
Step-by-step explanation:
An arc with length 5 pi over 4 inches is formed by a 15 degree central angle what is the radius of the circle
Answer:
Radius of the circle is 15 inches.
Step-by-step explanation:
Relation between length of arc, radius and the angle subtended by the arc on center is:
[tex]\theta = \dfrac{l}{r} ..... (1)[/tex]
where [tex]\theta[/tex] is the central angle in radians subtended by arc
[tex]l[/tex] is the length of arc
[tex]r[/tex] is the radius of arc
We are Given the following details:
[tex]l = \dfrac{5\pi}{4}\ inch[/tex]
[tex]\theta = 15^\circ[/tex]
We know that [tex]\pi \ radians = 180 ^\circ[/tex]
Converting [tex]\theta[/tex] to radians:
[tex]\theta =\dfrac{\pi}{180} \times 15[/tex] radians
Putting the values of [tex]\theta[/tex] and [tex]l[/tex] to find the value of [tex]r[/tex]
[tex]\dfrac{\pi}{180} \times 15 = \dfrac{5\pi}{4r}\\\Rightarrow r = \dfrac{45}{3} \\\Rightarrow r = 15 \ inches[/tex]
Hence, Radius of the circle is 15 inches.
20/4 = X/18 What is X
Answer: 90
Step-by-step explanation: Divide 20 by 4 and Multiply the 18
What is the median of this data set
Answer:
52.5
Step-by-step explanation:
median is where u find the middle number
put them in order first
24,28,51,54,67,70
its between 54 and 51
Circumference & Area of Circles: Question 10
In baseball, the next batter waits in the on-deck circle. If the diameter
of the on-deck circle is 5 feet, what is its approximate circumference?
(Urex= 314)
Select one
01571
o
Answer:
i got 19.625 if you round it you should get either 20 or 19.6
Step-by-step explanation:
if im wrong sorry
Which expression is equivalent to 64 – 9x^2?
A(32)^2 – (3x)^2
B(32)^2 + (-3x)2
C(8)^2 – (3x)^2
D(8)^2 + (-3x)^2
Answer:
Option C is correct
Step-by-step explanation:
A = 64 - 9x^2
= 8^2 - (3^2)(x^2)
= 8^2 - (3x)^2
Hope this helps!
A swimming pool is being drained at a constant rate of 3 inches (depth of the water) per hour. The depth of the water after 5 hours is 32 inches. Write the equation for this function in point slope form.
Answer:
y-32=3(x-5)
Step-by-step explanation:
The swimming pool is being drained at a constant rate of 3 inches per hour, therefore:
The rate of change, Slope, m=3 inches per hourIf the depth of the water after 5 hours is 32 inches.
The depth is the dependent variable(as its values varies with time) while the time is the independent variable, we can write this as a pair (x,y)=(5, 32).
The point slope form of the equation of a line is of the form: [tex]y-y_1=m(x-x_1)\\(x_1,y_1)=(5,32), m=3\\$Substituting these values, we obtain:\\y-32=3(x-5)\\This is the equation of the function in point slope form.[/tex]
The table represents a function,
X F(x)
-6 3
-2 1
0 4
3 -2
what is f(-2)?
A) -3
B)-1
C)1
D)3
Answer:
c
Step-by-step explanation:
the answer is c. because it is the corresponding value to minus two
what is (- 2) to the 4 power in expanded form and standard form what is (- 7) to the 2nd power in expanded form and standard form
Answer:
(-2)^4 = (-2) * (-2) * (-2) * (-2) = 16
↑expanded ↑standard
(-7)² = (-7) * (-7) = 49
Express 5.09 * 10 to the -4 in standard form
Answer:
5.09 x 10^-4 = 0.000509
Step-by-step explanation:
Simply just move the decimal places 4 times to the left and fill in your zeros to get your answer. (I think this is standard form)
what is standard form of 42/-10
Answer:
-4.2
Step-by-step explanation:
Taking the expression at face value, it is ...
42/-10 = -42/10 = -4.2
_____
Comment on "standard form"
In the US, a number is in standard form if it is written as a sequence of decimal digits and a decimal point (if there is a fractional part), usually with no leading zeros (left of the decimal point). The sign is prepended to that digit string, as shown above.
In the UK, a number is in standard form if it is written in "scientific notation." The rule for writing a number in standard form is that first you write down a number between 1 and 10, then you write ×10(to the power of an integer). Usually powers of 0, or multipliers of 1, are not written. Then the number here is still -4.2, rather than -4.2×10⁰.
Which ordered pair is generated from the equation shown below? y = 2x + 4 A. (1, 6) B. (1, 2) C. (3, 6) D. (8, 16)
Answer:
The ordered pair generated from the equation is (1, 6).
Step-by-step explanation:
An ordered pair is a pair of numbers, representing two variables, in a specific order. For instance, (x, y) = (1, 2) here x = 1 and y = 2.
The equation provided is:
[tex]y=2x+4[/tex]
Check for all the options:
A (1, 6): [tex]y=2x+4\Rightarrow\ 6=(2\times 1) +4\Rightarrow\ 6=6[/tex] B (1, 2): [tex]y=2x+4\Rightarrow\ 2=(2\times 1) +4\Rightarrow\ 2\neq 6[/tex] C (3, 6): [tex]y=2x+4\Rightarrow\ 6=(2\times 3) +4\Rightarrow\ 6\neq10[/tex] D (8, 16): [tex]y=2x+4\Rightarrow\ 16=(2\times 8) +4\Rightarrow\ 16\neq20[/tex]Thus, the ordered pair generated from the equation is (1, 6).
Answer:
(1,6)
Step-by-step explanation:
Jenna constructs the model to represent 3x2 + 11x – 4. An algebra tile configuration. 0 tiles are in the Factor 1 spot. 0 tiles are in the Factor 2 spot. 20 tiles are in the Product spot in 4 columns with 5 rows. First row: 3 + x squared, 1 negative x. The last 4 rows are the same: 3 + x, 1 negative. What factors does Jenna need to model for the sides? (3x + 1) and (x – 4) (3x – 1) and (x + 4) (3x – 2) and (x + 2) (3x + 2) and (x – 2)
Answer:(3x – 1) and (x + 4)
Step-by-step explanation:
Jenna needs to model the factors (3x – 1) and (x + 4) for the sides of the configuration. The correct answer would be an option (B).
What is the Factorization?Factorization, also known as factoring, is the breakdown of one element into a product of other objects, or factors, which when multiplied together generate the original.
The model is given in the question, as follows:
3x² + 11x – 4
Each row has a coefficient of 3 and an x term, which can be modeled with 3 tiles and 1 tile, respectively.
The first row has a constant term of -1, which can be modeled with 1 tile in the Factor 1 spot.
The second row has a constant term of 4, which can be modeled with 4 tiles in the Factor 2 spot.
So, the configuration shows the correct factors (3x – 1) and (x + 4) for the sides of the model.
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Number of people for x tents if each tent can accommodate 4 people.
Answer:
4xpeople
Step-by-step explanation:
one tent accommodates 4 people
x tent will accommodate 4xpeople
Not sure
Answer:
[tex]4x[/tex]
Step-by-step explanation:
Each tent can accommodate 4 people.
1 tent is [tex]1x[/tex]
[tex]1x \times 4[/tex]
Suppose students are independent from one another. 63% of students are using Mr. Martin's new social media app, Mar-tin-stagram. 2 students are randomly selected. What is the probability that both of them use it? (Write answer as a decimal. Do not round)
Answer:
[tex]P(X=2) =0.3906[/tex]
Step-by-step explanation:
Proportion of students using the app, p = 63/100 = 0.63
Proportion of students not using the app, q = 1 - 0.63 = 0.37
Sample size, n = 2
Probability that the two students are using the app.
[tex]P(X = r) = nCr p^{n} q^{n-r} \\P(X = 2) = 2C2 *0.63^{2} *0.37^{2-2}\\P(X = 2) = 2C2 *0.63^{2} *0.37^{0}\\P(X=2) = 0.63^{2} \\P(X=2) =0.3906[/tex]
R 0,-180
is the same rotation as
R
90, 180
R 0,180
OR-90,180
R 0,90
90,180 is the same as R so it is
b÷7−12=8
Solve the equation
Answer:
[tex] \boxed{b = 140} [/tex]
Step-by-step explanation:
[tex] = > \frac{b}{7} - 12 = 8 \\ \\ = > \frac{b}{7} = 8 + 12 \\ \\ = > \frac{b}{7} = 20 \\ \\ = > b = 20 \times 7 \\ \\ = > b = 140[/tex]
Mr. Bond's monthly income is Rs. 2400 and his monthly expenditure on rent is Rs.250. The central angle of the sector representing rent expenses in the pie chart would be ……………
Answer:
[tex]x = 37.5^{\circ}[/tex]
Step-by-step explanation:
The central angle of the sector representing rent expenses in the pie chart is found by simple rule of three:
[tex]x = \frac{Rs. 250}{Rs. 2400}\times 360^{\circ}[/tex]
[tex]x = 37.5^{\circ}[/tex]
In the pie chart, the central angle of the sector reflecting rent expenses is equal to [tex]\boldsymbol{37.5^{\circ}}[/tex]
Pie ChartA pie chart is a circular statistical visual divided into slices to show numerical proportion. The arc length of each slice in a pie chart is proportionate to the quantity it shows.
Monthly income of Mr. Bond [tex]=[/tex] Rs. [tex]2400[/tex]
Monthly expenditure on rent [tex]=[/tex] Rs. [tex]250[/tex]
Central angle of the sector representing rent expenses in the pie chart [tex]=\frac{250}{2400}\times 360^{\circ}[/tex]
[tex]=\boldsymbol{37.5^{\circ}}[/tex]
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Brian rolls 2 fair dice and adds the results from each. Work out the probability of getting a total of 1.
Answer:
zero
Step-by-step explanation:
probability of getting total of 1 is zero
minimum of total can be 1+1=2
What is the value of a
Answer: Multiplying 3x and -x we obtain A= -3x^2
rate of change for y=5x+25
Answer:5
Step-by-step explanation:
rate of change is the same thing as slope (or m)
The required rate of change for the given equation y = 5x + 25 is 5.
Given that,
For the given equation y =5x +25 the rate of change is to be determined.
The slope of the line is the tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.
What is the rate of change?The rate of change is defined as the change in value with the rest of the time is called rate of change.
Here,
The given equation,
y = 5x + 25
Differentiate the above equation with respect to x,
dy/dx = d(5x +25)/dx
dy/dx = 5dx/dx + d25/dx
dy/dx = 5 (since dx/dx =1 and d25/dx = 0)
here dy/dx is the slope of the equation or m or rate of change = 5
Thus, the required rate of change for the given equation y = 5x + 25 is 5.
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Solve 15 > -3x or 2/5 x > -2
Answer:
Step-by-step explanation:
the second one
Remy wanted to measure the angle of the slide in the playground. He used a piece of folded paper that was 10°. He measured that 3 of the folded paper angles would fit in the angle made by the slide. What was the angle of the slide?
Answer:
30°
Step-by-step explanation:
Since the folded paper can fit into the slide three times, we simply have to multiply 10° by 3:
10° * 3 = 30°
The angle of the slide is 30°
Marcus tracked the changes in his sales over a 12-
month period and graphed the results. Over which
interval was the change in Marcus's sales constant?
0 (0.4)
(0.5)
O (5, 6)
O (6. 12)
Answer:
Its B!
Step-by-step explanation:
Just passed on edge 2020
The interval between which the sales of the Marcus were constant was (0, 5) to (5, 6) and (5, 6) to (6, 12)
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
Given, Marcus tracked the changes in his sales over a 12- month period.
we need to find at which interval was the change in Marcus's sales constant.
First we need to plot the graph, the points given to us will show us the sale of Marcus from the beginning to the end.
The rapid increment is in the number of sales for that period of time is (0, 4) and (0, 5) as we can see a straight line.
Line between point (0, 5) and (5, 6), there is a slant line therefore, which shows that were slow and constant growth in the sale of Marcus as the line is increasing upwards.
The line between the points (5, 6) and (6, 12) is also a slant line but the slope of the line is high than the previous line for points (0, 5) and (5, 6).
Constant growth between these two points and this growth was also constant but it was more rapid as compared to sales between the point (0, 5) and (5, 6).
Therefore the interval between which the sales of the Marcus were constant was (0, 5) to (5, 6) and (5, 6) to (6, 12)
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The table shows the number of championsthips won by the baseball and softball leagues of three youth baseball
divisions organized by age groups.
Baseball League (B) Softball League (5)
Ages 7-9 C93
Ages 10-12M 2
Ages 13-15 (
2
if the winning team plays in the Ages 10-12 division, find the probability that the team is in the Basebal League. Answer
in terms of a reduced fraction.
a0
R(BIY)
Answer:
7/10
Step-by-step explanation:
Finding the totals of each column and row, we find:
There are 3+2+1 = 6 children in the baseball league.
There are 7+2+1 = 10 children in the softball league.
There are 3+7 = 10 children in the 7-9 division.
There are 2+2 = 4 children in the 10-12 division.
There are 1+1 = 2 children in the 13-15 division.
There are a total of 10+6 = 16 children.
We start with the information that the team is a member of the softball league. There are 10 children in this league; this is the denominator of the probability.
There are 7 children in the 7-9 division that are in the softball league. This gives us the probability 7/10.
correct me if this is wrong
3 + 2(2x + 8) = 1 is equivalent to:
Answer:
x = [tex]-\frac{9}{2}[/tex]
Step-by-step explanation:
=> 3+2(2x+8) = 1
=> 3+4x+16 = 1
=> 4x+19 = 1
=> 4x = 1-19
=> 4x = -18
Dividing both sides by 4
=> x = [tex]-\frac{18}{4}[/tex]
=> x = [tex]-\frac{9}{2}[/tex]
Answer: -9/2
Step-by-step explanation:
3 + 2(2x + 8) = 1
3 + 4x + 16 = 1
19 + 4x = 1
4x = -18
x = -18/4 = -9/2
Find the area of the square below. Each unit on the grid represents one unit. Make sure you show your work and/or explain how you solved it.
Answer:
Area of the rectangle A = 17 units²
Step-by-step explanation:
Area of the rectangle A = Area of rectangle ACEG - (Area of the triangle ABH + Area of triangle BCD + Area of triangle DEF + Area of the triangle FGH )
Area of rectangle ACEG = Length × Width
= (5 units) × (5 units)
= 25 square units
Area of the triangle ABH = [tex]\frac{1}{2}(\text{Base})(\text{Height})[/tex]
= [tex]\frac{1}{2}(4)(1)[/tex]
= 2 units²
Area of the triangle BCD = [tex]\frac{1}{2}(\text{Base})(\text{Height})[/tex]
= [tex]\frac{1}{2}(1)(4)[/tex]
= 2 units²
Similarly, area of the triangle DEF = 2 units²
And area of the triangle FGH = 2 units²
Now area of the rectangle A = 25 - (2 + 2 + 2 + 2)
= 25 - 8
= 17 square units
Therefore, area of the rectangle A = 17 square units
The question is above please help
Answer:
i believe it's C i may be wrong
Step-by-step explanation: