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
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:
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.
What is the missing step in this proof
can you help me with this,please?
Answer:
-5/9
Step-by-step explanation:
-4/9 - 1/9 = -5/9
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?
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.)
☡☡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
7. Which expression is equivalent to 3-4.3^6?
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
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
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:
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]
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.
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:
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.
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:
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.
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:
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:
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)
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
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.
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 :)
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
Find the GCF. (Greatest Common Factor) Use^ to show exponents if
needed. *
3x5 + 6x + 6
Answer:
the greatest common factor is 3
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.
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
.......
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!!!
0.6c+2.5=3.22 solve for c
What is the additive inverse of (- 2) ?
Answer:
2 because it holds the same value as -2 and its the additive inverse