Answer:
35
Step-by-step explanation:
let x be the number of students in the class
then number of girls = 0.4x , so
x = 21 + 0.4x ( subtract 0.4x from both sides )
0.6x = 21 ( divide both sides by 0.6 )
x = 35
the total number of students is 35
Evaluate the expression 3× 2t if t equals 4
Can someone tell me what is 1350 divided by 225 step by step?
a. Mr. Gordon works with Ms. Patel from the Example. Mr. Gordon writes the expression 3x + 4x to represent the cost of ordering posterboards and stick-c letters for x students. What information does 3x + 4x tell you about the situation that the other expressions do not?
Answer:
$162
Step-by-step explanation:
5r=20 10p=100 14t=42
100+42+20=162
5r+10p+14t=$162
Identify whether each phrase is an expression, equation, or inequality.
Answer:
Step-by-step explanation:
Expression => | -2 |
Equation => 6 - 1 = 2 + 3
Inequality => 8^m > 64
Answers:
Expression is [tex]|-2|[/tex]
Equation is [tex]6-1 = 2+3[/tex]
Inequality is [tex]8^m > 64[/tex]
====================================================
Explanation:
If it has an equal sign, then it's an equation.
If it has an inequality sign of one of the following [tex]< , \ > , \ \le, \ \ge[/tex], then it's an inequality.
Otherwise, it's an expression.
Based on the results in the table, which is the best prediction of how many times Paola will draw a blue or a red marble in 5,000 trials?
Answer:
about 4,400 times
Step-by-step explanation:
its simple
Simplify
7^8x7^3x7^4/7^9x7^5
Answer:
x^222/7
Step-by-step explanation:
Equation at the end of step 3: x74
((78 • x73) • ———) • x75
79
STEP 4 :Multiplying exponential expressions : 4.1 x147 multiplied by x75 = x(147 + 75) = x222
If m aed is 48°, then possible measurements for arc ad and arc bc respectfully are:
Answer:
it's going to be 30 and 18
The possible measurements for arc AD and arc BC are 130° and 34° respectively.
What is Circle?Circle is a two dimensional figure which consist of set of all the points which are at equal distance from a point which is fixed called the center of the circle.
Given is a circle.
We have the outside angle formed by the two secants is ∠AED and the measure for it is 48°.
Outside Angle Theorem states that " the measure of an angle which is formed by joining two tangents, or two secants, or one of either of them is equal to the measure of half of the difference of the intercepted arcs.
Here outside angle, ∠AED = 48°
Intercepted arcs are AD and BC.
Using the theorem,
∠AED = (Arc AD - Arc BC) / 2
This holds only if AD = 130° and BC = 34°.
(130 - 34) / 2 = 48
Hence the correct option is D. 130° and 34°.
Learn more about Circle Arcs here :
https://brainly.com/question/3384740
#SPJ3
4. Funds are like the ultimate in one stop shopping (investing)
True
False
solve this with an explantion i will say thanks
Answer: x=5
Step-by-step explanation:
divide both sides by the numeric factor on the left side, then that will give the answer for x
estellano Rosales, FABIAN A cone and a cylinder with their dimensions are shown in the diagram. 8 in. 8 in. A - 6 in. - 6 in. Which measurement is closest to the difference between the volumes of these figures in cubic inches?
Answer:151 in.³
Step-by-step explanation:
Jaidee reduced the size of a photo to a
height of 4 in. What is the new width if it
was originally 10 in wide and 20 in tall?
Answer:
The width would be 8.
Hope this helps!! PLEASEEE give Brainlist!!
solve the z for 57--10z+7
Answer: 57=-10z+7 Answer: z=-- -
Step-by-step explanation: 57=-10z+7 Answer: z=-- -
with any set of scores that is normally distributed what percentage of the total area falls,
1. between the mean and a score that lies one standard deviation below the mean?
2. above a score that lies one standard deviation below the mean and one standard deviation above the mean?
3. between a score that lies two standard deviations below the mean and two standard deviations above the mean?
Answer:
1.) Approximately 68%We can summarize use of the standard deviation as a yardstick with the Empirical Rule, also known as the 68-95-99.7% Rule. In any normal distribution with mean μ and standard deviation σ : Approximately 68%of the data fall within one standard deviation of the mean.
Step-by-step explanation:
A teacher states that line
M
R
is perpendicular to line
X
Y
. Which statement best describes the lines?
The lines always remain the same distance from each other.
The lines always remain the same distance from each other.
The lines intersect at a
90
°
90
°
angle.
The lines intersect at a 90 ° angle.
The lines never intersect.
The lines never intersect.
The lines share a common endpoint.
The lines share a common endpoint.
Answer:
The lines intersect at 90°
Step-by-step explanation:
If two lines are perpendicular, they intersect to form right angles.
Right angle = 90°
Line is different from line segment or a ray. The given lines MR and XY are best described by: Option A: The lines intersect at a 90° angle.
To get to know about intersection of MR and XY, we need to know what a line is.
What is line, line segment and a ray?A line usually refers to infinite lenghted straight line in the Euclidean space.A line segment is a segment (of finite length) of a line.A ray is has fixed on endpoint, but it extends infinitely from the other endpoint, so no other endpoint at all.When does two lines intersect?If they are not parallel (having 0 degree angle between each other) and not coincident (not lying over each other), then those two lines always intersect.
Since the considered lines MR and XY are said to be perpendicular (having 90° angle between them, thus, they will intersect each other).
Therefore, the given lines MR and XY are best described by: Option A: The lines intersect at a 90° angle.
Learn more about angle between two lines here:
https://brainly.com/question/24329241
what is the inequality shown
Answer:
[tex] - 3 \leqslant x < 2[/tex]
Step-by-step explanation:
the black dot on -3 represents less than equal to X and the white dot on 2 represents X is less than 2
A line passes through the point (4,-2) and is perpendicular to the line with the
equation y = 2/3x+4. What's the equation of the line?
Step-by-step explanation:
the whole solution is in the picture
1. If there is a decrease of 31 percent, what decimal do we multiply by to get the amount after the decrease?
2. If there is an increase of 16 percent, what decimal do we multiply by?
Answer:
1. 0.69
2. 1.16
Step-by-step explanation:
1.
Decrease of 31% = 100% - 31% = 69%
Convert 69% to a decimal = 69/100 = 0.69
2.
Increase of 16% = 100% + 16% = 116%
Convert 116% to a decimal = 116/100 = 1.16
A water pipe is leaking 2 1⁄4 litres of water every hour. How long will it take 5 2⁄5 litres of water?
Answer:
above is the solution to the question
I really need help with this question pls help
Answer:
Step-by-step explanation:
To find the lengths, we use the Pythagorean theorem, which states (a^2)+(b^2)=(c^2) where c^2 is the hypotenuse, length opposite of the right angle. For the first set of coordinates J and K, we find the horizontal and vertical differences between them to represent sides a and b. Which would be a horizontal length of 8 and a vertical length of 3.
(8^2)+(3^2)=c^2
73=c^2
c=square root of 73
(I've added a picture of a graph I drew below)
I would suggest you draw graphs of the points and use the Pythagorean theorem to conceptualize it, but I'll list the rest of the measurements below.
MN:
Vertical length between 2 and -3 = 5
Horizontal length between 7 and 1 = 6
(6^2)+(5^2)=c^2
36+25=c^2
61=c^2
c= square root of 61
PQ:
Vertical length between -6 and -2 = 4
Horizontal length between -8 and -3 = 5
(5^2)+(4^2)=c^2
25+16=c^2
41=c^2
c= square root of 41
As for the "checking all the statements" part, none of them are true because none of the lengths are equal.
Hope this helps! (Sorry for being so late)
The Kaaba is one of Islam's holiest shrines. In what city is it located?
a.
Cairo
c.
Riyadh
b.
Medina
d.
Mecca
please help
∫(2x^3-x^2-2x+4)/(1+x^2)dx
Simplify the integrand as
[tex]\dfrac{2x^3 - x^2 - 2x + 4}{1 + x^2} = \dfrac{(2x^3 + 2x) - (x^2 + 1) - 4x + 5}{x^2 + 1} \\\\ = \dfrac{2x(x^2 + 1) - (x^2 + 1) - 4x + 5}{x^2 + 1} \\\\ = 2x - 1 - \dfrac{4x - 5}{x^2 + 1}[/tex]
(in other words, compute the quotient and remainder)
We can further split up and prepare the remainder term for integration by rewriting it as
[tex]\dfrac{4x - 5}{x^2 + 1} = 2\times\dfrac{2x}{x^2 + 1} - \dfrac5{x^2 + 1}[/tex]
Now we integrate:
[tex]\displaystyle \frac{2x^3 - x^2 - 2x + 4}{1 + x^2} \, dx = \int \left(2x - 1 - 2\times\frac{2x}{x^2+1} + \frac5{x^2+1}\right) \, dx[/tex]
[tex]\displaystyle = x^2 - x - 2 \int \frac{2x}{x^2+1} \, dx + 5 \int \frac{dx}{x^2+1}[/tex]
In the first remaining integral, substitute y = x² + 1 and dy = 2x dx. In the last integral, recall that d/dx [arctan(x)] = 1/(x² + 1).
[tex]\displaystyle = x^2 - x - 2 \int \frac{dy}y + 5 \int \frac{dx}{x^2+1}[/tex]
[tex]\displaystyle = x^2 - x - 2 \ln|y| + 5 \arctan(x) + C[/tex]
[tex]\displaystyle = \boxed{x^2 - x - 2 \ln(x^2+1) + 5 \arctan(x) + C}[/tex]
How do you solve this multiplying decimals problem 0.14 x 0.27 ?
Answer:
0.0378[tex]\begin{gathered} \: \end{gathered}[/tex]
[tex] \tt0.14 \times 0.27[/tex][tex] \tt = \red{0.0378}[/tex][tex]\begin{gathered} \: \end{gathered}[/tex]
you run a delivery service between two small islands which are connected by a bridge and connected to the mainland by several bridges as shown in the picture below. the river separates the top mainland from the bottom mainland. you cannot get from the top of the mainland to the bottom of the mainland without passing through an island.
Answer:
"Through" (and any subsequent words) was ignored because we limit queries to 32 words.
Use the Factor Theorem to determine whether x-2 is a factor of P(x) = -x^4 + x^3 - x + 7.
Specifically, evaluate P at the proper value, and then determine whether x+2 is a factor.
P(?) =?
is x-2 a factor of P(x)
Is x-2 not a factor pf P(x)
Answer: WE have to find if x + 3 is a factor
Here's how we do it :
x + 3 = 0
x = -3
Plug that in :
(-3)^4 + 2(-3)^3 - 2(-3) - 6
81 - 54 + 6 - 6
27
So, when we divide, we get a remainder of 27. This is not zero.
So, since f(a) was not zero, (x - a) is not a factor
P(-3) = 27 ---> ANSWER
Thus here (x + 3) is NOT a factor ---> ANSWER
what is the probability of spinning an A if you have 2 A on the 6 letter spinner?
Answer:
1/3
Step-by-step explanation:
p(A) = (number of A's on the spinner)/(total number of letters on the spinner)
p(A) = 2/6 = 1/3
Point P is called the center of
Answer:
Point P is the center of Rotation.
Julian is taking an Indian cooking class. To practice, he makes a meal for his family. He uses 1 cup of cream to make chicken curry. He also uses 3 cups of cream to make cinnamon rice pudding. How many pints of cream does Julian use for this meal? pints
Answer:
He uses 2 pints.
Step-by-step explanation:
One cup equals 0.5 pints, if he used 4 cups of the cream total, we'd do 0.5 x 4 which gives us 2
How many capulets and montages are there
Answer:
i think the answer would be 4c + 6m = 100, 8c + 12m = 200
Step-by-step explanation:
max points easy math problem
Solution:
Given:
x = -4y = 4Substitute the values into the equation:
x⁶ - x/4y=> [(-4)⁶] - (-4)/4(4)Simplify the numerator and the denominator:
=> [(-4) x (-4) x (-4) x (-4) x (-4) x (-4)] + 4/16=> [(-64) x (-64)] + 4/16=> [4096] + 4/16=> 4100/16Simplify the fraction:
=> 4100/16=> 1025 x 4/4 x 4=> 1025/4Correct option is B.
Answer:
[tex][-\frac{1023}{4} ][/tex]
Step-by-step explanation:
[tex]\frac{x^6-x}{4y}[/tex]
x = -4
y = 4
Replace all the variables with the corresponding values given:
[tex]\frac{-4^6-(-4)}{4(4)}[/tex]
Now solve,
-4 to the power of 6 is equal to -4096
[tex]\frac{-4096-(-4)}{4(4)}[/tex]
we see that we are subtracting a negative number, meaning that it'll cancel out and turn into an addition sign. Therefore:
[tex]-4096 + 4[/tex]
[tex]-4092[/tex]
[tex]\frac{-4092}{4(4)}[/tex]
4(4) is equal to 16
[tex]\frac{-4092}{16}[/tex]
When divided, you'll get a mixed fraction of [tex]-255\frac{3}{4}[/tex]
To turn into an improper fraction, simply multiply the whole number by the denominator, then add the numerator to the result.
[tex]-255 * 4 + 3[/tex]
[tex][-\frac{1023}{4} ][/tex]
can you help me solve for slope
