PLS HELP FOR BRIANLIST!!!! There are 8 more students in a math class than in a history class. If the ratio of the students in the math class to the history class students is 9 : 7, how many students are in math class?
Answer:
9-7= 2
8 / 2 = 4
4 X 9 = 36
4 X 7 = 28
36 students in math class
Answer:
36 students in the math class
Step-by-step explanation:
in a school, 56% of the 850 students are girls. work out the number of girls in the school
Answer:
476 girls
Step-by-step explanation:
total students : 850
56% of 850 = 476
60% of what number is equal to 30?
Answer:
50
Step-by-step explanation:
60% of 50 is 30
8. Oscar charges $25 for the first hour of tutoring and $15 for each additional hour or fraction of an hour. The rates that Latoya charges for x hours of tutoring are modeled with the function shown. 30x, 06. Who will charge more to tutor for 5.5 hours, Oscar or Latoya? How much more?
Answer:
a. Oscar charges more to tutor for 5.5 hours than Latoya.
b. Oscar charges more by a difference of $1.00 for tutoring 5.5 hours.
Step-by-step explanation:
Charges by Oscar:
1st hour of tutoring = $25
Additional hour or fraction = $15
For tutoring for 5.5 hours, Oscar charges:
1st hour of tutoring = $25
4.5 hours of additional tutoring = $75 ($15 * 5)
Total charges = $100
Charges by Latoya:
= 30x, 0.6, where x = hours of tutoring
Total charges = 30 * 5.5 * 0.6 = $99
Therefore, Oscar charges more for tutoring 5.5 hours than Latoya by $1 ($100 - $99).
Point J(-4,-6) and point K(4,4) are located on a coordinate grid
Which measurement is closest to the distance between point J and point K in units?
A) 18 units
B) 6 units
C) 13 units
D) 9 units
Is the following number rational or irrational?
– 1
Choose 1 answer:
A
Rational
B
Irrational
Answer:
B.
Step-by-step explanation:
Irrational as π is irrational.
Balena has a garden in the shape of a circle of radius 10 m.
He is going to cover the garden with grass seed to make a lawn.
Grass seed is sold in boxes.
Each box of grass seed will cover 46 m' of garden.
Balena wants to cover all the garden with grass seed.
Work out an estimate for the number of boxes of grass seed Balena needs.
Show your working out.
Answer:
7
Step-by-step explanation:
→ Work out area of circle
π × 10² = 100π = 314.159 (3 decimal places)
→ Divide area of circle by box area
314.159 ÷ 46 = 6.8295
→ Round answer as you can't get a decimal of a box
7
The area of a circle is given as πr².
The number of boxes of grass seeds required to cover the garden is 9 boxes.
What is a circle?A circle is a round-shaped figure that has no corners or edges.
The area of a circle is given as:
Area = πr²
We have,
The radius of the circle = 10 m
Area of the garden:
= πr²
We can take,
π = 22/7 = 3.14
= 3.14 x 10 x 10
= 314 m²
The area of a box of grass seeds:
= 46 m²
The number of boxes of grass seeds to cover the garden area:
= 314 / 46
= 6.8 boxes
Thus,
The number of boxes of grass seeds required to cover the garden is 9 boxes.
Learn more about circle here:
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please can you help me! I will mark brainliest!!
The map shows the location of the houses of Dan, Joe, Lee, and Roy:
The coordinates of the community center are (5, −1). Who has a house in the same
quadrant as the community center?
1. Dan
2. Joe
3. Lee
4. Roy
Answer: Roy
Step-by-step explanation:
(5, -1) has a positive x value and negative y value. Therefore, it is in the 4 quadrant which is the bottom right corner. In this case, Roy is the only one in the 4 quadrant where the community center is.
Answer:
its in between joe and dan
Step-by-step explanation:
1 Adrian is buying a new radio.
The radio is on sale.
The sale price of the radio is 20% off the normal price.
The radio Adrian buys is slightly damaged.
The shop takes an extra 15% off the sale price due to the damage.
Work out the overall percentage reduction of the price of the radio.
Total 5 Marks
Answer:
35
Step-by-step explanation:
20 + 15 = 35
hope this helps
Help me mdkskkeeknsjeleksksk
Answer:it’s an unknown number
Step-by-step explanation:
Need help!! Its for my final!!
Answer:
a and b
Step-by-step explanation: i took the test and i think thats it
I need help ASAP please help me
Answer:
y=2x
Step-by-step explanation:
It goes up by 2 units every x value so
Answer:
y=2x is your correct answer
Step-by-step explanation:
I need help on all of number 2!!!!
9514 1404 393
Answer:
a: 0; b: 1; c: 1; d: ∞; e: 0; f: ∞
Step-by-step explanation:
Simplify the expressions to put the left and right in the same form. Then compare. If the x-coefficients are the same, there will be 0 or ∞ solutions. If they are different, there will be 1 solution.
If the x-coefficients are the same, look at the constants. If they are different, there will be 0 solutions. If they are the same, there will be ∞ solutions.
__
a) -2x -10 = -6x +4x -8 ⇒ -2x -10 = -2x -8 . . . . 0 solutions
b) 0.8x -4.8 = -0.5x +3.4 . . . . 1 solution
c) -1/4x -7/2 = -3x -4 . . . . 1 solution
d) 2x -8 +x = 3x -6 -2 ⇒ 3x -8 = 3x -8 . . . . ∞ solutions
e) 3 -2/5x -12/5 = 2 -2/5x ⇒ -2/5x +3/5 = -2/5x +2 . . . . 0 solutions
f) 6x -6 +21 = 6x +15 ⇒ 6x +15 = 6x +15 . . . . ∞ solutions
Answer:
a)3x+7x-8=18
3x+7x=18+8
10x=18+8
10x=26
x=13/5
b)-8+2x=12x-3
-8+2x-12x=-3
2x-12x=-3+8
-10x=-3+8
-10x=5
x=-1/2
e)4/3x-18+2/3x=7/3x+9
4x-54+2x=7x+27
6x-54=7x+27
6x-7x-54=27
6x-7x=27+54
-x=27+54
-x=81
X=-81
d)-2x-4/5 +8/5 =3x-3
-2x-4+8=15x-15
-2x+4=15x-5
-2x-15x+4=-15
-2x-15x=-15-4
-17x=-15-4
-17x=-19
x=19/17
Step-by-step explanation:
Which situation is best represented by the following equation?
45w + 123.95 = 753.95
Erica paid $753.95 for dance classes. She paid a $123.95 registration fee and $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes?
Erica paid $753.95 for dance classes. She paid a $45 registration fee and $123.95 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes?
Erica and her sister paid $753.95 for dance classes. Erica paid $123.95 for each week she was enrolled in the classes, and her sister paid $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica and her sister were enrolled in dance classes?
Erica paid $75 3.95 for dance classes. She paid $123.95 for each week she was enrolled in the classes after using a coupon that gave her $45 off the price per week. What is w, the number of weeks Erica was enrolled in dance classes?
Answer:
The first one, 14 weeks of dance classes.
Step-by-step explanation:
She paid $753.95 as a total for all of the classes, not just one week. She paid her registration free, which you subtract from 753.95 to get 630.00. She pays 45 per week, so you divide 630 by 45 to get the amount of weeks she attended dance classes, or 14 weeks.
What is 6,374 in expanded form?
Answer:
6000+300+70+4
Step-by-step explanation:
6000 plus 300 = 6300
70 plus 4= 74
6300+74=6374
Answer:
6,000
+ 300
+ 70
+ 4
-------------
6, 3 7 4
Step-by-step explanation:
Mary wins £400.
She gives 50%- to her mother.
Many gives 20%, to her sster
She keeps the rest
Work out how much each person receives
please answer now i am being timed
Josh plans to watch 3 movies each month. Write an equation to represent the total number of movies n that he will watch in m months.
Helpppp meeeeeee plsssss
Answer:
Domain: [-4, ∞)
General Formulas and Concepts:
Algebra I
Domain is the set of x-values that can be inputted into function f(x)Step-by-step explanation:
According to the graph, our line's x-values span from -4 to infinity. Since -4 is closed dot, it is inclusive in the domain:
Interval Notation: [-4, ∞)
Interval Notation: y ≥ -4
What is the next term of the geometric sequence?
108,36, 12,
Find the difference between numbers:
Divide the second number by the first number:
36/108 = 1/33
Divide the third number by the second number:
12/36 = 1/3
The difference is 1/3
Multiply the last known number by 1/3 for the next number:
12 x 1/3 = 4
The next term is 4
I’m having doubts about my answer can someone help me?
Write an algebraic expression for 2 less than one-third of the points the Panthers scored.
I put (1/3•p) - 2
Is that correct?
I’ll give brainliest
4(f + 1) = 12
what does f equal
Answer:
f=2
Step-by-step explanation:
4(f+1)=12
4f+4=12
-4 -4
4f=8
f=2
Answer
F = 2
Step-by-step explanation:
Distributive property: 4f+4=12
-4 -4
Subtraction property of equality: 4f=8
/4. /4
Division property of equality: f=2
Can u guys help me with this... Thanks ❤️
Answer:
90 divided by 15
Step-by-step explanation:
= 6
So 90/15=6 6 Friends
Answer:
90/15=6 so you gave 6 friends paper clips.
Step-by-step explanation:
take 90 and divide it by 15 and you'll get the amount of friends..(im not sure if this is right though but hopefully it is!) <3 hang in there!
Please help on this will mark the first answer brainliest
Answer:
The equation is 3n + 13 = 40 The triplets are 9 years old
Step-by-step explanation:
Is it bad to have a math assignment you don't get?
Answer:
Yes, if yo get an assignment that you don't get, ask the teacher to explain it to you.
Step-by-step explanation:
What will be the answer in the finish box
Answer:
Step-by-step explanation:
In the first triangle, using Pythagorean's theorem, x^2+3^2=5^2, x = 4
In the second triangle, using Pythagorean's theorem, x^2+7^2=24^2, x = 25
In the third triangle, using Pythagorean's theorem, 8^2+15^2=x^2, x = 17
In the fourth triangle, using Pythagorean's theorem, x^2+8^2=10^2, x = 6
In the fifth triangle, using Pythagorean's theorem, 5^2+12^2=x^2, x = 13
Select other ways to express 2:12
Answer:
12 after 2
Step-by-step explanation:
I got this correct on ed2020
Answer:
ratio
Step-by-step explanation:
A laboratory technician needs to make a 36-liter batch of a 40% acid solution. How can the laboratory technician combine a batch of an acid solution that is pure acid with another that is 20% to get the desired concentration?
Answer:
9 Litre of 100% acid, 27 Litre of 20% acid solution
Step-by-step explanation:
We know that 1 = 100% while
0.2 = 20%
We assume that x is volume of 100% solution, while y is volume of 20% solution.
x + 0.2y = (36×40/100)
x+0.2y= 14.4--------eqn(1)
x+y=36-------eqn(2)
x=36-y------eqn(3)
Input eqn(2) into 1 we have
(36-y)+0.2y= 14.4
-y+0.2y=14.4-36
-0.8y= 21.6
y=21.6/0.8
y=27
Hence, 27 Litre of 20% acid is required
From eqn(3) we can find value of x
x = 36-27
9 Litre of 100% acid is required
9 Litre of 100% acid, 27 Litre of 20% acid
Hence, the laboratory technician can combine a batch of 9 Litre of 100% acid, 27 Litre of 20% acid an acid solution that is pure acid with another that is 20% to get the desired concentration
If two angles of a triangle have measures 42∘ and 20 ∘ what is the measure of the third angle?
Answer:
[tex]x = 118[/tex]
Step-by-step explanation:
[tex]42 + 20 + x = 180[/tex]
[tex]62 + x = 180[/tex]
[tex]x = 180 - 62[/tex]
[tex]x = 118[/tex]
Plz help I am failing in math and only have a week!!
Answer:
11. Slope of the line is 7/10.
12. Slope of the line is [tex]-\frac{1}{3}[/tex]
Step-by-step explanation:
11. Given points are:
(-6, 1) and (4, 8)
Slope of a line is given by the formula;
m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
m = [tex]\frac{8-1}{4-(-6)}[/tex]
m = [tex]\frac{7}{4+6}[/tex]
m = [tex]\frac{7}{10}[/tex]
Slope of the line is 7/10.
12. Given points are:
(2, -3) and (5, -4)
Slope of the equation is;
m = [tex]\frac{-4-(-3)}{5-2}[/tex]
m = [tex]\frac{-4+3}{3}[/tex]
m = [tex]\frac{-1}{3}[/tex]
Hence,
Slope of the line is [tex]-\frac{1}{3}[/tex].