Answer: 25 sixth graders
Step-by-step explanation:
Sixth-graders are in a ratio with fifth graders in the band at 5:4 and there are 20 fifth-grade students in the band.
To find the number of 6th graders, use direct proportion and assume the sixth grader number is x:
5 : 4
x : 20
4x = 100
x = 100 / 4
x = 25 sixth graders
find the solution to the system of equations? 4x-3y-z=3 , -3x+5y+z=9, x+2z=6
Answer:
is this the one?
Step-by-step exExplanation:
Adding third equation to first one,
7
x
+
5
y
+
z
+
x
−
6
y
−
z
=
0
−
18
or
8
x
−
y
=
−
18
.
(
1
)
Adding 2 times of third one to second one,
−
x
+
3
y
+
2
z
+
2
⋅
(
x
−
6
y
−
z
)
=
16
−
2
⋅
18
or
x
−
9
y
=
−
20
(
2
)
Substracting 8 times of
(
2
)
from
(
1
)
,
8
x
−
y
−
8
⋅
(
x
−
9
y
)
=
−
18
−
8
⋅
(
−
20
)
71
y
=
142
, so
y
=
2
Hence,
x
−
9
⋅
2
=
−
20
or
x
−
18
=
−
20
, so
x
=
−
2
Thus,
7
⋅
(
−
2
)
+
5
⋅
2
+
z
=
0
or
z
−
4
=
0
, so
z
=
4Explanation:
Adding third equation to first one,
7
x
+
5
y
+
z
+
x
−
6
y
−
z
=
0
−
18
or
8
x
−
y
=
−
18
.
(
1
)
Adding 2 times of third one to second one,
−
x
+
3
y
+
2
z
+
2
⋅
(
x
−
6
y
−
z
)
=
16
−
2
⋅
18
or
x
−
9
y
=
−
20
(
2
)
Substracting 8 times of
(
2
)
from
(
1
)
,
8
x
−
y
−
8
⋅
(
x
−
9
y
)
=
−
18
−
8
⋅
(
−
20
)
71
y
=
142
, so
y
=
2
Hence,
x
−
9
⋅
2
=
−
20
or
x
−
18
=
−
20
, so
x
=
−
2
Thus,
7
⋅
(
−
2
)
+
5
⋅
2
+
z
=
0
or
z
−
4
=
0
, so
z
=
4planation:
James buys a shirt and a pair of socks on sale for 20% off. If the price of the shirt
before the sale was $26 and he spent a total of $26, what was the original price of
the socks? Round to the nearest hundredth, if necessary.
Answer:
The Price of socks is
=
$
8
Explanation:
Given -
Discount 25%
Price of shirt before discount
=
$
24
Amount spent on both shirt and socks after applying discount
=
$
24
Assume the price of socks
=
$
x
Then Shirt + Socks before discount =
$
(
24
+
x
)
After discount one has to pay 75% of the article.
Then -
75
100
(
24
+
x
)
=
24
0.75
(
24
+
x
)
=
24
18
+
0.75
x
=
24
0.75
x
=
24
−
18
=
6
x
=
6
0.75
=
8
The Price of socks is
=
$
8
How to verify your answer -
One way
Price of shirt =$24
Price of socks =$8
Total =$32
Discount =25%
Discount for $32 is
32
×
25
100
=
$
8
Amount one has to pay after discount
=
32
−
8
=
$
24
Another way is -
Discount 25%
It means after discount it is enough if he pays 75% of the price.
In our case - Actual price is
=
$
32
75% of $32 is
=
32
×
75
100
=
2
Step-by-step explanation:
Solve the linear equation x - 9= 3/5x
(Please put your answer as a decimal.)
Answer:
22.5
Step-by-step explanation:
Answer:
x = 22.5
Step-by-step explanation:
x - 9= 3/5x
3/5x - x = -9
-2/5x = -9
x = 22.5
What are the three different kinds of problems we can solve using the percent proportion?
Answer:
We have now seen solutions method for the three basic types of percent problems ;finding the amount, the rate, and the base
Please help me with this question
Answer:
4x+6y
Step-by-step explanation:
Nancy borrows $5000 at a rate of 16% interest per year. What is the amount due at the end of 5 years If the Interest is
compounded continuously?
$5200
$11.127.70
$800
$11,000
Answer:
$11,000
Step-by-step explanation:
Unit 2 Mid-Unit Assessment
Answer:
users are not supposed to help you on test, quiz's or assessments. according to the T.O.S of brainly aka the honor code
Step-by-step explanation:
What is the value of \log_7 343log
7
343?
Answer:
3
Step-by-step explanation:
on delta math
Expand (Explain your work)
(3p - 2)^2
Answer:
9p^2-12p+4
Step-by-step explanation:
Apply perfect square formula;
a=3p , b=2
Apply perfect square formula;
(3p)^2-2*3p*2+2^2
Simplify:
=9p^2-12p+4
Mike bought a bottle of gatorade for $1
and some granola bars for $2.50
each. How many granola bars did he
buy if he spent $11 total?
Answer:
4 granola bars
Step-by-step explanation:
x is the number of granola bars
1 + 2.5x = 11
2.5x = 10
x = 4
Janet is designing a garden in the shape of a trapezoid which is split into three parts: two triangular
flower beds and a rectangular section of grass. Setting up the flower beds costs $3.50 per square
foot. How much will Janet have to spend to set up the flower beds?
PLS HELP
Ans) 70
Tell me if you need steps
(Am 100% sure with this answer)
I REALLY NEED HELP ??
Answer: I believe it is 92
Step-by-step explanation:
Identify the type of solution from a graph.
Answer:
the answerrrr I believe is C
A line with what type of slope contains the points (-2, 5) and (-2, 6)?
Answer:
undefined
Step-by-step explanation:
To find the slope
m = ( y2-y1)/(x2-x1)
= ( 6-5)/( -2 - -2)
= (6-5) /(-2+2)
= 1/0
We cannot divide by zero, so the slope is undefined
i don’t know the answer
Answer:
C
Step-by-step explanation:
In order to be able to find the circumference in relation to radius, you have to use the formula C = 2πr
Hope this helped :)
A random sample of students were asked whether they prefer milk juice or water is it results are summarized in the table.
Answer:
C
Step-by-step explanation:
The probability of students response is milk is 0.311.
What is probability?Probability deals with the occurrence of a random event. The chance that a given event will occur. It is the measure of the likelihood of an event to occur.The value is expressed from zero to one.
For the given situation,
The table shows the students preference of milk, juice or water.
Total number of students preferred milk = 14
Total number of students = 45
Thus the probability that the students response is milk is
[tex]P(e)=\frac{14}{45}[/tex]
⇒ [tex]P(e)= 0.311[/tex]
Hence we can conclude that the probability of students response is milk is 0.311.
Learn more about probability here
https://brainly.com/question/24091416
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please help it’s due today!!!
Answer:
1=x and 2=y
Step-by-step explanation:
- For English class, George must read 168 pages in 7 days. What is the unit rate of
pages to days?
Answer:
168 pages/7 days = 24 pages/1 day
Hope that helps, dude.
Need answer plz help
Answer:
138.16
Step-by-step explanation:
multiply them all together
I need help!
How do you know if an equation is exponential growth or exponential decay or not an exponential equation? For example, what is y=2(0.5)^-the exponent is x
Answer:
If a is positive and b is greater than 1 , then it is exponential growth. If a is positive and b is less than 1 but greater than 0 , then it is exponential decay
Step-by-step explanation:
small baby answer
Solve the system of equations by substitution.
3x+2y=10 y=3x-4
x= y=
Answer:
x=2; y=2
Step-by-step explanation:
3x+2y=10
y=3x-4
We can substitute y from the first equation with the second equation:
3x+2(3x-4)=10
3x+6x-8=10
9x=18
x=2
Now plug this in to any of the equations (i used second equation):
y=3(2)-4
y=6-4
y=2
Check your answers:
y=3x-4
2=3(2)-4
2=6-4
2=2
Amy bought a diamond ring for $6,000. If the value
of the ring increases at a constant rate of 5.8% per
year, how long will it take for the ring to be worth
$19,000?
Show work
Answer: $13,308
5.8% of 6000 is 348. 348 times 21 is $7,308. add 6,000 to 7,308 and you get $13,308
Step-by-step explanation: amy likes cheap rings LOL
Answer:
54 3/4 years
Step-by-step explanation:
5.8% of 6,000= 348
348x54 3/4=19,053
hope it helps!
HELP ME
ANSWER THIS QUESTION
DONT ANSWER WITH A LINK
Answer:
3/1.....4/1
Step-by-step explanation:
Jasmine will buy the same number of stamps every month to add to a stamp collection her grandfather gave her. The table shows the number of stamps Jasmine will have at the end of x months. How many stamps was Jasmine given, and how many stamps will she buy every month?
A. Jasmine was given 65 stamps, and she will buy 5 stamps every month.
B. Jasmine was given 60 stamps, and she will buy 65 stamps every month.
C. Jasmine was given 5 stamps, and she will buy 60 stamps every month.
D. Jasmine was given 60 stamps, and she will buy 5 stamps every month
Answer:
It is D
Step-by-step explanation:
It could be A but if we read the sentence correctly than we should understand about the number of stamps she bought in every month and how much her grandmother gave her.We should also read the options more than 10 times to understand it
URGENTE, POR FAVOR AYUDA !!!!!!!!!!!
Se diseña una loseta recortando cuadrantes de circulo de 4cm de diámetro, de cada vértice de un cuadrado de lado 12 cm. Si se colocan tres de estas losetas en fila, ¿Cuál es el perímetro de la figura que se forma?
Te adjunto un fichero con la solución.
If STU is reflected over a horizontal line, what is the length of side S'U'?
What is the original angle? You didn't provide us with enough information. If the angle is reflected, it'll be the same number of units as the original shape.
Hope this helped.
Bill's favorite breakfast cereal is available in four different sizes. Which is the best buy?
15-ounce box for $4,20
B 10-ounce box for $3.10
© 22-ounce box for $5.72
18-ounce box for $4.50
Answer:
The best deal is the 18 ounce box
Answer:
the 18 ounce box is cheapest per ounce
Step-by-step explanation:
1. .28per ounce
2. .31per ounce
3. . 26per ounce
4. .25per ounce
The radius of a salad bowl is 8.9 inches. What is the surface area of the bowl? (Assume the bowl is half a sphere and use 3.14 for ).
a. 3979.51 in2
b. 994.88 in2
c. 497.44 in2
d. 52.92 in2
Answer:
994.88 in2
Step-by-step explanation:
Use the surface area formula SA = 4(pi)(r2) which results in SA = 4(3.14)((8.9)2) = 994.88 square inches. Because the bowl represents half a sphere, it is necessary to divide that answer by 2 to get the surface of the bowl.
If radius of a salad bowl is 8.9 inches then the surface area of the bowl is 497.44 square inches, option c is correct.
What is Three dimensional shape?a three dimensional shape can be defined as a solid figure or an object or shape that has three dimensions—length, width, and height.
Given that radius of a salad bowl is 8.9 inches.
We have to find the surface area of the bowl
The surface area of a half-sphere is given by the formula:
SA = 2πr²
where r is the radius of the sphere.
In this case, the radius of the salad bowl is 8.9 inches.
Substituting this value into the formula, we get:
SA = 2 x 3.14 x (8.9)²
SA = 497.44 square inches
Surface area =497.44 square inches
Hence, if radius of a salad bowl is 8.9 inches then the surface area of the bowl is 497.44 square inches, option c is correct.
To learn more on Three dimensional figure click:
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Help me will mark brainliest!!!
Answer:
a ray can be defined as a part of a line that has a fixed starting point but no end point. It can extend infinitely in one direction. It can extend infinitely in one direction.
Answer:
A ray can intersect a circle in a line segmentBecause when a ray will pass through a circle,it will Pass through two points making it a line segment in the circle
PLEASE HELP
Use the formula √(x2−x1)2+(y2−y1)2 to find the distance between the points(8,2) and (3,8) to the nearest tenth please
Answer:
Step-by-step explanation:
[tex]d=\sqrt{(3-8)^2+(8-2)^2} =\sqrt{25+36 }=\sqrt{61} \approx 7.81[/tex]