Answer:
folder is $3 binder is $4
Step-by-step explanation:
Let folder be x and binders be y
Marcos
20x+10y= 100----------1
Alicia
10x+20y= 110-------------2
solve 1 and 2
20x+10y= 100 X 1
10x+20y= 110 X 2
20x+10y= 100
-20x+40y= 220
-30y= -120
y= 120/30
y= 4
put y= 4 in 1
20x+10y= 100
20x+10(4)= 100
20x+40=100
20x=100-40
20x=60
x= 60/20
x=3
Jan walks 2 miles at a constant rate of 3 miles per hour and then runs 1 mile at a constant rate of 8 miles per hour.
(a) What is Jan’s average speed for the entire trip?
(b) Is the average speed in part (a) equal to the average of Jan’s two speeds?
Answer:
(a).4.36 mph
(b) No
Step-by-step explanation:
We are given that
Jan covered distance,s1 =2 miles
Speed of Jan, a=3 mph
s2=1 mile
b=8mph
a.
We have to find the Jan' s average speed for the entire trip.
Average speed =[tex]\frac{2ab}{a+b}[/tex]
Using the formula
Average speed=[tex]\frac{2(3)(8)}{3+8}=4.36mph[/tex]
b.
Average speed with two speed
Average of Jan’s two speeds
[tex]=\frac{a+b}{2}[/tex]
=[tex]\frac{3+8}{2}=5.5 mph[/tex]
[tex]4.36\neq 5.5[/tex]
Hence, the average speed in part (a) is not equal to the average of Jan’s two speeds.
Class A has 20 pupils and class B has 22 pupils.
Both classes sit the same maths test.
The mean score for class A is 40.
The mean score for both classes is 47.
What is the mean score (rounded to 2 DP) in the maths test for class B?
40×20=800 i just gest so if you wana delite my answer go then
Dan invests £2700 into his bank account.
He receives 2% per year compound interest.
How much will Dan have after 4 years?
f(2) if f(x) = 2x - 5
Answer:
The answer is 4.
Step-by-step explanation:
Answer:
f(2) = -1
Step-by-step explanation:
Plug in 2 for x in the equation: f(2) = 2(2) - 5
Remember order of operations/ PEMDAS
f(2) = 4-5
f(2) = -1
(solve by substitution or elimination)Maci’s closet is a rectangle with a perimeter of 18 ft. Its length is 5 ft greater than its width.
Find the dimensions of her closet.
Answer:2x7
Step-by-step explanation:2(x+5)+2x=18. 4x+10=18. x=2. 2x7.
It takes 3 1/2 spoons of chocolate syrup to make 3 2/5 gallons of chocolate milk. How many spoons would it take to make 4 gallons of chocolate milk?
Answer:
4 2/17
Step-by-step explanation:
It takes 3 1/2 spoons of chocolate syrup to make 3 2/5 gallons of chocolate milk
3 1/2= 3 2/5
7/2= 17/5
1 gallon = 7/2÷17/5
= 7/2 × 5/17
= 35/34
Therefore the number of spoons required to make 4 gallons
= 4 × 35/34
= 140/34
= 70/17
= 4 2/17
two times p plus five is greater than or equal to three times p minus ten
Answer:
2p + 5 ≥ 3p - 10
Step-by-step explanation:
Answer: 2p+5 ≥ 3p-10
Hayhay#5682
add me plz
4 x 6 = 24
I will later
Your answer is 24
May nilbin be with you
At a baseball game, a vender sold a combined total of 208 sodas and hot dogs. The number of sodas sold was three times the number of hot dogs sold. Find the number of sodas and the number of hot dogs sold.
Answer:
sodas = 135 hot dogs = 45
Step-by-step explanation:
(S stands for sodas and H stands for hot dogs)
S + H = 180
3H+H = 180
4H = 180
H = 45
S = 45*3
S = 135
Subject: Add Maths
Please answerr.
x-2 is a factor of x^3+ax^2+bx-4. Express b in terms of a.
The answer is b=-2-2a but can someone please show the working?
Answer:
ax2+x3+bx−4
Step-by-step explanation:
Show work for full credit please.
Answer:
x = 7.5
Step-by-step explanation:
This can be solved via cross multiplying.
6x = 5 × 9 | Multiply the denominators by the respective nominators.
6x = 45 | Multiply 5 × 9
x = 7.5 | Divide 45 ÷ 6 (Division Property of Equality)
Answer:
x=7.5
Step-by-step explanation:
for this you would cross-multiply to get x
6x=9(5)
6x=45
x=7.5
What is a dot plot and how do you read it? Check all that apply.
O A dot plot is a simple plot that displays data values as dots above a number line
O Dot plots show the frequency with which a specific item appears in a data set.
O 3 students spent 4 hours on homework.
O 5 students spent 2 hours on homework.
O Dot plots show the distribution of the data.
O Students spent 1 to 6 hours on homework.
Answer:
I need help on the same exact question.I'll figure it out for you though
Step-by-step explanation:
So I think it's the first one, the fourth one, and the last one, and the second one.
I hope it helps you!
This figure is 1/4 of a circle.
What is the best approximation for the perimeter of the figure?
Use 3.14 to approximate pi.
A 4.7 cm
B 7.7 cm
C 10.7 cm
D 18.8 cm
Answer:
7.7
oof oof oof oof oof oof oof oof oof oof oof
Answer:
10.7
Step-by-step explanation:
PLEASE HELP ITS MATH!!!!
This triangle has one side that lies on an extended line segment. Based on this triangle, what statement about x is true? A. x = 27 because 180−109−44=27 B. x = 65 because 109−44=65 and 44 + 65 = 109 C. x = 71 because 180−109=71 D. x = 153 because 109 + 44 = 153 and 153−44=109
MEASUREMENTS (down below)
A triangle with base on an extended line. Two angle measures are given. Top interior angle is forty-four degrees. Lower right exterior angle is one hundred nine degrees. Lower left interior angle is labeled x degrees.
Answer:
B. x = 65 because 109−44=65 and 44 + 65 = 109
Step-by-step explanation:
Given :
The triangle below :
Sum of interior angles of a triangle :
(44° + x + (180 - 109) = 180°
44° + x + 71° = 180
115° + x = 180°
x = 180° - 115°
x = 65°
Need help with this (10 points)
Answer:
5 is greater than equal to 5. So f(5)=5+8=13
Step-by-step explanation:
please help me on this will give you brainliest!!
Answer:
Mesure 6 is 116 mesure 8 is 116
Step-by-step explanation:
Write a small statement to convince others of the importance of food safety
Answer:
Food is what fuels our bodies. Food is what keeps us alive, but when food is not kept fresh and safe, it can cause us to get sick or even die from food poisoning.
Sam solved the equation 6x - 8 = 16 below. Find her error and solve it correctly.
If (6*1.33) - 8 equals anything, it's -0.02
If you want your answer to be 16, X must equal 4
Does anyone know??????
Answer:
67 degrees
Step-by-step explanation:
Angle 2 and angle 7 are vertical angles since l is the transversal.
so that means <2=<7
4x+39=12x-17
Simplify: isolate the variable:
56=8x
divide by 8:
7=x
now plug it in to m<2
4(7)+39=m<2
28+39
67=m<2
i hope this helps!
Plea look at the photo of Parallelogram properties.
Question: Find the measurement indicated in each parallelogram.
Please explain it you can:)
Answer:
1. 45
2. 105
3. 95
4. 85
Step-by-step explanation:
For problems 1 and 4:
Consecutive angles are supplementary in a parallelogram, which means they equal 180.
180 - 135 = 45
180 - 95 = 85
For problems 2 and 3:
Opposite angles are congruent or equal each other in a parallelogram,
express the given number 5,120,000 in scientific notation
Answer:
5.12 * 10^6
Step-by-step explanation:
The average ant is about 7.5x10^-2 inches in length. The average adult human is about 6.72x10^1 inches tall. About how many times bigger is the human than an ant?
Answer:
Step-by-step explanation:
The average ant is about 7.5x10^-2 inches in length. The average adult human is about 6.72x10^1 inches tall. About how many times bigger is the human than an ant?
2x + 3x = _____??
help me pls
Answer:
5x
Step-by-step explanation:
pls i need help with this equation good points, will mark. brainliest
Answer:
120 tiles 50 + 30 + 40 = 120 tiles
Step-by-step explanation:
Count the tiles
Hope this helped
HELP ME PLSSS :((PLSSSS
Answer:
40 degrees
Step-by-step explanation:
all angles add to 180* in a triangle
65+75=140
subtract from 180, you get 40 which is your answer
List the sides of the triangle in order from shortest to longest.
Answer:
FH, GF, GH
hmmmmmmmmmmm
What is the sum of x^
2 – 3x + 7 and 3x² + 5x – 9?
1) 4x² – 8x + 2
2) 4x² + 2x + 16
3) 4x2 – 2x – 2
4) 4x² + 2x - 2
Answer:
4. [tex]4x^{2} +2x-2[/tex]
Step-by-step explanation:
To add these two equations together, you have to combine like terms.
1. [tex]x^{2} +3x^{2} = 4x^{2}[/tex]
2. [tex](-3x)+5x = 2x[/tex]
3. 7 - 9 = -2
Then you just combine all of these terms together into one equation and you have your answer.
Hope this helped!
7 The speed s can be found by dividing the distance d by time t. It took Kevin 3
h traveling at an average speed of 45 mi/h from his house to Cooperstown.
What is the distance between Kevin's house and Cooperstown?
Answer:
Step-by-step explanation:
3 hours at 45 mph means he traveled 135 miles. The distance between Kevin's house and Cooperstown is 135 miles.
The soccer club has planned a trip to a tournament. The cost of the van is
$231. When 3 students who are not members of the club join the trip, the
transportation cost per person drops by $4.50. How many soccer club
members are going to the tournament?
O A. -14, 11
B. 11
C. -14
D. 14
Answer:
d
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Adam is selling cookies for a fundraiser. The cookies cost him $1.49 a box. He is selling them for $2.25 a box. Adam sold 209 boxes of cookies. How much profit did Adam earn?