Answer:
16 girls in the class
14 boys in the class
Step-by-step explanation:
Because of the ratio of 7:8, I added 7+8.
7+8= 15
30 (the number of students in the class) divided by 15 (the sum of the ratio)
30/15= 2
I then multiplied 8 from the "girls" part of the ratio by 2 (the quotient of 30/15) and got 16. Then I subtracted 16 from 30 and got 14, which s the number of boys in the class.
Hope this helps!
On a team, 4 girls and 2 boys scored a total of 28 points. The difference between the number of points scored by the 4 girls and the number of points scored by the 2 boys is 12. Each girl scored the same number of points and each boy scored the same number of points. Find the number of points scored by each girl and each boy Each girl scored points.
Answer:
Each girl earned 2 points
Each boy earned 5 points
Step-by-step explanation:
Let x represent the number of points one girl earned
Let y represent the number of points one boy earned
4x + 2y = 28
4x - 2y = 12
8y = 40
y = 5 points
4x + (2)(5) = 28
4x + 20 = 28
4x = 8
x = 2 points
Each girl earned 2 points
Each boy earned 5 points
A driver stopped to purchase 27 gallons of gas and paid $62.10. What is the unit rate for gas?
$_______per gallon
Answer:
Each gallon of gas was $2.30
Step-by-step explanation:
Complete or rewrite each equation using the property indicated (algebra).
Property: Associative
Equation: 5 x (3 x 4)
Rewrite 5 x (3 x 4) in associative property
Please explain.
Answer:
60
Step-by-step explanation:
Ok so,
in PEMDAS the first thing to do is parentheses so 3 times 4 = 12. now it should look like this
5x12 which equals 60
hope this helps! have a good day! please mark brainliest
A rectangular playground is 65m long and 30 m wide. A pathway of 1.5 m width goes all around, outside it. Find the area of the pathway
Answer:
97.5 m^2
Step-by-step explanation:
Given data
Length = 65m
Width= 30m
We are told that the width of the path= 1.5m
Hence the area of the path is
=65*1.5
=97.5 m^2
Find the geometric mean of 6 and 30, write your answer in simplest radical form.
Answer:
13.4
Step-by-step explanation:
What is six and eighty-seven thousandths
Answer:
6.087
Step-by-step explanation:
0.000
^ones
^tenths
^hundredths
^thousandths
Answer:
depends how u want ur answer... :|
6.087
6 and 870
Hope that helps! :)
Step-by-step explanation:
a shop keeper buys 20 kg of sugar at birr y per kg.he sells 16 kg at birr (y+3/4) per kg and the rest at (y+1) per kg.what is his profit. show the step clearly
Jane works as a tutor for $14 an hour and as a waitress for $11 an hour. This month, she worked a combined total of 93 hours at her two jobs.
Answer:
3t + 1,023
Step-by-step explanation:
The computation is shown below:
As a tutor it is $14 per hour
As a waitress it is $11 per hour
Total number of hours worked is 93
Now let us assume the number of hours worked as a tutor is t
So as a waiter is 93 - t
Now the equation is
= $14(t) + $11(93 - t)
= 14t + 1,023 - 11t
= 3t + 1,023
HELP PELASE ASAPppppp
Answer:D
Step-by-step explanation:
Divide 15 by v. Then, subtract 7.
Which of the following expressions matches the statement above?
OA 15 = V-7
OB. 15 = (1-7)
OC. 15 = (v-7)
OD. V=15-7
A is the correct answer
hope that helps:)
Answer:
A 15/V-7
Step-by-step explanation:
Find the discriminant of x2-6x -10 = 0, and determine the number of real solutions of the equation.
Answer:
76
2 real solutions
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Standard Form: ax² + bx + c = 0
Discriminant: b² - 4ac
Positive - 2 solutions Equal to 0 - 1 solution Negative - No solutions/ImaginaryStep-by-step explanation:
Step 1: Define
x² - 6x - 10 = 0
Step 2: Identify Variables
Compare quadratic.
x² - 6x - 10 = 0 ↔ ax² + bx + c = 0
a = 1, b = -6, c = -10
Step 3: Find Discriminant
Substitute in variables [Discriminant]: (-6)² - 4(1)(-10)[Discriminant] Evaluate exponents: 36 - 4(1)(-10)[Discriminant] Multiply: 36 + 40[Discriminant] Add: 76This tells us that our quadratic has 2 real solutions.
Given the similar polygons, what is the value of X?
Answer:
2
Step-by-step explanation:
Answer:
The answer is 20
Step-by-step explanation:
I did the homework and 20 was the correct answer
Help plsss !!!! Thnk you!!!!
The ratio of dimes to quarters in a money bag is 12.2. If there are 8 quarters. How many dimes are there?
Answer:
98
Step-by-step explanation:
Given: The ratio of dimes to quarters in a money bag is 12.2
Also, there are 8 quarters.
To find: Number of dimes
Solution:
Number of dimes : Number of quarters = 12.2
Number of dimes : 8 = 12.2
Therefore,
Number of dimes = 12.2 × 8 = 97.6 ≈ 98
Which multiplication expression does the model represent?
Answer: I think the answer is A. because it's 1/2 of 4 and it takes only one "quarter of the 4" all though it is split in half it still decared as a whole
Step-by-step explanation:
The multiplication expression represent the model is 1/2×4.
What is multiplication?Multiplication is an operation that represents the basic idea of repeated addition of the same number. The numbers that are multiplied are called the factors and the result that is obtained after the multiplication of two or more numbers is known as the product of those numbers.
In the given figure, there are 4 equal parts.
One part is divided into two equal parts.
1/2×4
Therefore, the multiplication expression represent the model is 1/2×4.
Learn more about the multiplication here:
https://brainly.com/question/1562995.
#SPJ2
cual es el resultado de -4+5/3
Answer:
English translate so i can help you ? :)
Step-by-step explanation:
Pls help I really need it
does anyone know how to do this ?
9514 1404 393
Answer:
y = 21
Step-by-step explanation:
In straightforward fashion, we can find the midpoints of the two segments, and set the distance between them equal to 10.
M = midpoint of AB
M = (A+B)/2 = ((-1, 0) +(-3, 6))/2 = (-4, 6)/2 = (-2, 3)
N = midpoint of CD
N = (C+D)/2 = ((3, 1) +(5, y))/2 = (8, 1+y)/2 = (4, (1+y)/2)
Then the distance MN is given by the distance formula.
|N-M| = 10 = √((4 -(-2))² +((1+y)/2 -3)²) . . . . . distance formula*
100 = 36 +((1+y)/2 -3)² . . . . . square both sides
64 = ((1 +y)/2 -3)² . . . . . . . . . subtract 36
8 = (1 +y)/2 -3 . . . . . . . . . . . . (positive) square root
11 = 1+y/2 . . . . . . . . add 3
22 = 1+y . . . . . . . . . multiply by 2
21 = y . . . . . . . . . . . subtract 1
_____
* The distance formula is an application of the Pythagorean theorem. Basically, the differences of x- and y-coordinates are taken to be the legs of a right triangle. They length of the hypotenuse is the distance between the two points.
d² = (x2 -x1)² +(y2 -y1)² . . . . . . . from the Pythagorean theorem
d = √((x2 -x1)² +(y2 -y1)²) . . . . . the usual distance formula
It took Hank 3.4 hours to travel 124 miles. At that rate, how long will it take Hank to travel 310 miles?
Answer: Time = 8.5 hours
Step-by-step explanation:
Step 1
Speed = distance / time
Distance traveled by Hank = 124 miles
Time = 3.4 hrs
Speed= Distance / Time
= 124/ 3.4 = 36.47 miles per hour
Step 2
At this same rate of speed =36.47 miles per hour, if he travels 310 miles, he will spend=
Time = Distance / Speed
Time = 310/ 36.47
Time =8.5 hours
HELP MEEEEEE PICKING BRAINLIEST!!!
Answer:
2 kg cashews
6 kg pecans
Step-by-step explanation:
System of Equations:
c + p = 8
8c + 7p = 8(7.25)
let c = 8-p
8(8-p) + 7p = 58
64 - 8p + 7p = 58
-p = -6
p = 6
help please I really need it
Answer:
If x is 6, y is 9
Step-by-step explanation:
In your equation, substitute 6 in for each x. This would be (6) + 3y = 4(6) + y.
This ends up being 6 + 3y = 24 + y.
After that, you can subtract y from both sides to get 6 + 2y = 24.
Then you can subtract 6 from both sides to get 2y = 18.
Finally, divide both sides by 2 to get y = 9.
Please help me !!!!!
Answer:
just don't answer that
Step-by-step explanation:
cause I don't know what is the answer
Please help me to solve the 7th part !
Answer:
i don't know
Step-by-step explanation:
sorry sorry sorry berry much
Round 26,127 to the nearest hundred.
5 or more add 1
4 or less stays the same
What is the value of 2 (38 –14) + 38 = 9?
Answer: 2(38−14)+38=?9
86≠9
False
Step-by-step explanation: hope this help
Someone help:
Decrease 120 by 60%
Answer:
48
Step-by-step explanation:
if increase⇒100%+the percentage given in the question
e.g ⇒ increase N (number) by 50%
so 150/100×N
if decrease⇒100% - the percentage given in the question
e.g ⇒ decrease N (number) by 70%
so 30/100×N
the answer of this question by steps is:
100%-60%=40%
40/100×120=48
last trigonometry question plz help me for 30 points
Answer:
46
Step-by-step explanation:
Segment WX = 23 by the 30 60 90 triangle theorem which states that the longer leg is sqrt3 times the length of the shorter leg.
Segment XY = 26 by the 30 60 90 triangle theorem that states the hypotenuse is twice the length of the shorter leg
Is 70/100 a bad score .........
Answer:
it will be a c I don't know if it's good
y = 2x + 7
y=2X+7
O one solution
O two solutions
O no solution
O infinitely many solutions
Answer:
Infinitely many solutions
Step-by-step explanation:
The lines overlap one another and this leads to an infinite amount of solutions.
Answer:
one solution is the answer
John worked "x" hours this week and Shanique worked eight hours less than John. Write an algebraic expression for the number of
hours that Shanique worked this week.
A) 8x
B) X-8
C)8-X
D)X - 8
Answer:
B or D, I can't tell from these answer choices. X-8
Step-by-step explanation:
Shanique has 8 less questions than John (X).
