Answer:
$4
Step-by-step explanation:
We need to set up an algebraic expression to solve this problem:
Let n= cost of a notepad
Let p= cost of a pen
First set up an expression for Cynthia's purchase:
cost of notepads*number of notepads + cost of pens*number of pens = total cost
n*2 + p*3 = 40.30
Rewrite as:
2n + 3p = 40.30
Next, set up an expression for Annie's purchase:
Here we will be using the same variables
n*3 + p*5 = 61
Rewrite as:
3n + 5p =61
Now, set up a system of equations:
2n + 3p = 40.30
3n + 5p =61
A system of equations can be solved in several ways, here I will use the addition/elimination method
For this method one of the variables must be able to be eliminated
Step 1: Pick a variable to eliminate
Here I will eliminate n
Step 2: make the selected variables in the equations equal and opposite so that they cancel out when the equations are added together
(2n + 3p = 40.30)(-3)
(3n + 5p =61)(2)
-6n - 9p = -120.90
6n + 10p = 122
Step 3: add vertically
-6n - 9p = -120.90
6n + 10p = 122
p = 1.10
Step 4: Figure out the other variable by inputting the answer you just got back into the original equation
2n + 3(1.10) = 40.30
2n + 3.30 = 40.30
-3.30 37
2n = 37
/2 /2
n = 18.5
One notebook = $18.50
One pen= $1.10
18.50+1.10= $19.60
2nd step
We must first set up an algebraic expression
total=15 pencils
total=9 pens
The total amount is the price of one pencil*15
To figure out one pencil:
10 pencils are $24
1 pencil is $2.40
Total= $36
9 pens = 36
Therefore 1 pen is $4
Find the area of the object
Answer:
2π + 24 m² = 30.3 m²(3 s.f.)
Step-by-step explanation:
Area of rectangle: l x w
6 x 4 = 24 m²
Area of semicircle: πr²/2
r = 4/2 = 2
π x 2² / 2
4π / 2
2π
Total area: 2π + 24 m² = 30.3 (3 s.f.)
can you help me with this,please?
Answer:
-5/9
Step-by-step explanation:
-4/9 - 1/9 = -5/9
2x + 1 = 7 solve the equation
pls help me im stuck on this question
Answer:
x = 3
Step-by-step explanation:
Brainliest Please!
Answer:
[tex]2x + 1 = 7 \\ 2x = 7 - 1 \\ 2x = 6 \\ x = \frac{6}{2} \\ x = 3[/tex]
Please help! You don't have to show work, just tell me the answer
Answer:
1A. acute. all of the angles are under 90%. acute is under 90%, right is 90%, and obtuse is over 90%
2A. scalene. isosceles is all sides are the same length, and equilateral is all sides are the same length AND all the angles are 60%. with scalene all sides can be different lengths, and angles can be different
3. no. the rule for making a triangle is that any 2 sides added up, must be more than the 3rd side. so 6+2, 6+4 work, but 2+4 is 6, which is not greater than 6, the third side
Step-by-step explanation:
PLEASE HELP IM BEING TIMED WILL MARK BRAINLIEST!!
Find the measure of the arc or angle indicated.
Step-by-step explanation:
7.B
8.C
9.A
10.D
.......
PLEASE PLEASE HELP!!
For problems 11 and 12, find the area of the figure. Round your answer to the nearest tenth, if necessary.
Answer:
Step-by-step explanation:
11)
A= (B x H)/2
A= (2.9x3.2)/2= 4.64cm²
12)
A= (B+b)H /2
A= (12+10)5.6 /2 = 61.6in
Answer:
I think that the answer might be 9.30 for the first one and the second one I think is 670.
Step-by-step explanation:
To find the area, you have to multiply the height and width for the two figures.
3.2 × 2.9 = 9.28
12 × 10 × 5.6 = 672
I think you round those to the nearest tenth. 9.28 would be 9.30 and 672 would be 670. I hope this answers your question.
betty saves 161 a month she saves 141 less than jack how much will jack save in two years
Answer:its 20
Step-by-step explanation:
because it is
Answer:
7248 A year
Step-by-step explanation:
Since the question was poorly described, i can only assume that Jack saves 141 more than betty and since the question didn't have any units i can't safely assume that 161 is (money)
☡☡please help asap i dont understand this ⚠⚠
Answer:
B (the second one)
Step-by-step explanation:
The thin yellow line in A only goes from 14-30. However, the correct numbers listed range from 12-30. Line B matches up with this data
3/4x=2x−5
NEED ANSWER WITHIN THE NEXT HOUR PLEASE GIVING 20 PTS!!!
Answer:
x = 4
Step-by-step explanation:
1. Write the equation
3/4x = 2x - 5
2. Get the variables on the same side
Let's subtract 2x! Now, since math is a veryyy jealous subject, you're going to do it on the other side too!
-1.25x = -5
3. Divide both sides by -1.25
x = 4
Thank you for the points!!!
What is the missing step in this proof
What is the additive inverse of (- 2) ?
Answer:
2 because it holds the same value as -2 and its the additive inverse
If you spin the spinner two times, how many possible outcomes are there?
Answer:
1 Answer. The chance of anding on A for one spin is 90+45360=38. So the probability of that happening twice in a row is 38×38=964.
Step-by-step explanation:
7. Which expression is equivalent to 3-4.3^6?
What is the solution to the equation 4 + 3/2y = 6?
y = 1
y=4
y = 500
y = 2000
Answer:
y=4/3
Step-by-step explanation:
First subtract 4
3/2y=2 then Divide by 3/2(or multiply by 2/3)
2*2/3
Answer: y=4
Step-by-step explanation:
i’ll mark branliest plzzz answer
Answer:
AB = 10 m
Step-by-step explanation:
Given that <ACB = <ECD, then triangles ABC and EDC are similar.
Let the height of the solar panel (AB) be represented by x. Thus by comparing the triangles, we have;
[tex]\frac{x}{6}[/tex] = [tex]\frac{45}{75}[/tex]
45x = 6 x 75
45x = 450
x = [tex]\frac{450}{45}[/tex]
x = 10
The height of the solar panel is determined to be 10 m.
what is the slope of the line?
What is the y-intercept?
Write the equation of the line?
Answer:
The slope is 2
The y-intercept is 3
The equation is y = 2x +3
Step-by-step explanation:
The equation goes up 2 squares and over 1 square. 2/1 = 2
For y-intercept, look at the y-axis
The equation is supposed to be written as y = mx + b
m being the slope and b being the y-intercept.
4. Two consecutive even numbers are such that the sum of the larger number and three times the smaller number is 42. Find the two numbers.
Answer: The two numbers are 10 and 12.
Step-by-step explanation:
Let the two consecutive numbers are x and x +2.
As per given, we have
[tex](x+2)+3x=42\\\\\Rightarrow\ 4x+2=42\\\\\Rightarrow\ 4x=40\\\\\Rightarrow\ x=10[/tex]
Smaller number = 10
Larger number = 10+2=12
Therefore, The two numbers are 10 and 12.
Marcus investigates businesses to see how much product they need to sell to make a profit. At a cupcake company, Marcus wants to figure out the minimum number of cupcakes they need to sell each week to make a profit.
It costs 35 cents in supplies to make each cupcake.
His rent, electricity and labor costs for his store each week is $1850.00.
He sells each cupcake for $5.50.
What is the minimum number of cupcakes needed to make a profit?
337
359
360
5286
Answer:
360
Step-by-step explanation:
Debra Arthur earns a weekly salary of $625 at All Sports.
Next month she will be promoted from assistant buyer to head buyer.
In her new position she will
be paid $1,450 semimonthly.
How much more per year will she earn as head buyer than as assistant buyer?
I need help please. I been here for 15 minutes.
Answer:
22
Step-by-step explanation:
first i would find out the radius and then deviede byt that
PLEASE HELP!! 30 points :)
What's the volume of a cube with a side length of 11 inches
• 33 in
• 121 in
• 726 in
• 1331 in
Answer:
V= 1331in³
Step-by-step explanation:
Answer:
1331 in
Step-by-step explanation:
Find f(-4) if f(x) = -3x - 5
Answer:
see photo below
Step-by-step explanation:
This actual has a photo attached not a link
Find the GCF. (Greatest Common Factor) Use^ to show exponents if
needed. *
3x5 + 6x + 6
Answer:
the greatest common factor is 3
0.6c+2.5=3.22 solve for c
Consider the two solids shown.
What is the difference between the number of vertices of the two sides
Answer:
C. six
Step-by-step explanation:
A hexagonal prism has 18 edges and a hexagonal pyramid has 12 edges, therefore the difference between the number of edges of the two solids is six (6) because 18-12 is 6.
The word "difference" infers that we need to subtract numbers in order to find how many are left.
A 14-in. diameter pizza is cut into 6 equal
slices. About how many square inches of
pizza are in each slice? Round to the
nearest square inch.
Answer:
25.64 in² per slice
Step-by-step explanation:
14 diameter = 7 radius
area of whole = π7² = 153.86 in²
153.86/6 = 25.64 in²
Compare the values of the digit 8 in the number 6,084 and in the number 9,821
Answer:
Step-by-step explanation:
The eight in 6,084 is in the tenths place. Separately, it would be 80. The 8 in 9,821 is in the hundredths place. This one is worth 800. So the 8 in 9,821 is greater than the 8 in 6,084.
CAN SOMEBODY PLEASE HELP ME!!! I WILL GIVE BRAINLY
Answer:
the angles are all the same
Step-by-step explanation:
that means they are sim
Answer:
BA is congruent to ZY
BC is congruent to ZX
Step-by-step explanation:
Since they are similar we can see that they have congruent parts due to there similarity
Angie and Kenny play online video games. Angie buys 2 software packages and 3 months of game play. Kenny buys 1 software package and 1 month of game play. Each software package costs $30. If their total cost is $170, what is the cost of one month of game play?
Answer:
$20
Step-by-step explanation:
Kenny's gameplay: 1 month
Angie's gameplay: 3 months
1+3= 4
Kenny bought 1 software pack
Angie bought 2 software packs
1+2= 3
Each software package= $30
So 30×3= 90
Total cost= $170
170-90= 80
80÷4= $20
There you go :)
exercise equipment advertised at $2200 is sold on sale for $1950. What percentage discount is this
Answer: $2200 is sold on sale for $1950.
Step-by-step explanation:
