Two students were shopping for school supplies. They need spirals which cost x dollars and pens which cost y dollars. One student bought 2 spirals and 3 pens for $8.66. Another student bought 4 spirals and 5 pens for $15.20. Find the unit cost of a spiral.
Answer:
x=1.15
y=2.12
Step-by-step explanation:
look at the picture ..........
Cooper was out at a restaurant for dinner when the bill came. His dinner came to $18. After adding in a tip, before tax, he paid $20.34. Find the percent tip.
Answer: Copper paid 13%
Step-by-step explanation:
Answer: 13%
Step-by-step explanation:
$20,34/$18=1.13
1.13x100=113%
113%-100%=13%
Which statement correctly describes the relationship between the lengths of the sides of the triangle shown below?
A. y squared equals x squared minus z.
B. y squared equals x squared minus z
squared.
C. x squared equals y squared plus z.
D. y plus z is equal to x squared.
Answer:
B. on edge 2021
Step-by-step explanation:
The pool is open every day from 11:00 a.m. until 8:00 p.m. How many hours is the pool open each day? *
Answer:
9 hours
Step-by-step explanation:
From 11:00 a.m. to 12:00 p.m. the elapsed time is 1 hour. From 12:00 p.m. to 8:00 p.m. the elapsed time is 8 hours. Add 8 + 1 to get 9 hours.
Hope it helps!
Need help please identify the lines is it chord, secant, tangent, radius, or diameter.
I'm a little bit confused.
Match the term with the definition.
Triangle A) perpendicular cross section of a cylinder
Rectangle B) shape created when a right triangle is rotated about the y-axis
Circle C) shape created when a rectangle is rotated about the y-axis
Cylinder D) parallel cross section of a sphere
Cone E) perpendicular cross section of a pyramid
Answer:
Step-by-step explanation:
Perpendicular cross section of a pyramid ------- triangle.
Imagine you cut pyramid like that. Height of pyramid would be height of your triangle. and sides of pyramid would be sides of triangle.
Perpendicular cross section of a cylinder ------- rectangle
diameter of a base of cylinder would be one side of rectangle and height of cylinder would be other side of rectangle. (pair of sides)
parallel cross section of a sphere ------ circle
when you cut sphere a side would appear with shape of circle.
shape create.... ----- cylinder.
one side of rectangle would be high of cylinder and other would be radius of it.
last one is cone. If you place right angle in coordinate beginning (0.0) and one of shorter sides to lie on y axis other would be on x axis. when rotated you get cone.
HELP PLEASE ANSWER THIS THANK YOU
A rectangular prism has a volume of 210 cubic meters. The length of the prism is 7 meters and the width is 6 meters. (Please help I'm an idiot and I don't know how to do this
Step-by-step explanation:
so we need to find the height as volume=width×length×height
210=6×7×height
210=42×height
height=210/42=5 meters
please mark brainliest
Answer:The answer is 5 (im assuming you need to find height.)
Step-by-step explanation: The formula to find height v/lw so you multiply 7 times 6 and divide that by 210.
Need Help! Thanks! Means alot : )
Identify the lines below
Answer:
the correct awnser is A
Step-by-step explanation:
.....
Answer:
parallel.
Step-by-step explanation:
I don't know how
Please help me with this question
Answer:
The answer is X=6 ABC=30 CBD=30
Answer:
x = 21
ABC = 105
CBD = 75
Step-by-step explanation:
3x + 12 + 5x = 180
8x + 12 = 180
8x = 168
x = 21
3(21) + 12 = 75
5(21) = 105
Amelia sent an equal number of messages each day for one week. At the end of the week, she has sent 49 messages. How many messages did she send each day?
Answer:
7 messages
Step-by-step explanation:
1 week = 7 days
7 messages a day.
49 divide by 7
Evaluate
89% of
£323.09
Give your answer rounded to 2DP
Answer:
£287.55 (2.d.p)
Step-by-step explanation:
323.09x89/100 = 287.5501
What is the difference between vertical and horizontal lines?
Answer:
A vertical line is any line parallel to the vertical direction. A horizontal line is any line normal to a vertical line. Horizontal lines do not cross each other.
explain how you will determine the area od the circle if you were given the diameter of the circle
PLEASE CAN YOU EXPLAIN LIKE A BIG PARAGRAPH OF HOW YOU WILL DO IT PLEASE RIGHT NOW LIKE A BIG PARAGRAPH THANK YOU
Answer:
Ok you're talking about "PI"
Area of a circle:
πr^2
What that basically means is
π <- That sign is 3.14
You wanna times that with the radius (r).
The radius is half of the diamater so divde the diameter by 2 then mutiply whatever u get with 3.14
Then the final step is do 3.14 x radias then times 2.
That's it :D
Hope this helps ~
Limone's Lemonade Corp. has a savings plan for its employees. If an employee makes an initial contribution of $1,000.00, the company pays 8% interest compounded quarterly. What is the value of the account after 5 years?
Answer: I don't know
Step-by-step explanation:The annual interest rate is 5%, and the interest accrues at a compounding rate for five years. To calculate the monthly interest, simply divide the annual interest rate by 12 months. The resulting monthly interest rate is 0.417%
Rates and ratios please help
Answer:
1.
a. 6/9 (2/3)
b. 9/6 (3/2)
2.
a. 4/8 (1/2)
b. 8/2 (4/1)
3.
a. 3/9 (1/3)
b. 9/3 (3/1)
4.
a. 2/10 (1/5)
Step-by-step explanation:
Hope this helps :)
How do you
Expand y(3+t)
Answer:
3y+ty
Step-by-step explanation:
you do y x 3= 3y
then you do t x y= ty
A forest covers 43,000 acres. A survey finds that 0.7% of the forest is old-growth trees. How many acres of old-growth trees are there?
Answer:
301 acres
Step-by-step explanation:
43,000 acres of forest
0.7% is old-growth
0.7% = 0.007
43,000 * 0.007 = 301 acres
Find the geometric mean between 6 and 30. Round answer to 2 decimal places.
Answer:
13.42
Step-by-step explanation:
Please help it's due today. Also please don't help if you don't know.
Answer:
Second Option
2x^10 y^12
Hope it helps....!
Rebecca is making brownies. She uses 4 ½ cups of chocolate chips to make six pans of brownies. How many cups of chocolate chips are needed to make one pan of brownies? Type your answer as a fraction.
Answer:
The answer to this problem is 3/4
Step-by-step explanation:
To answer this problem, you need to divide 4 1/2 by 6. After you did that, your answer will be how many cups of chocolate chips there are in a serving, to check your answer, you can multiply 3/4 by 6 (Sorry if this is incorrect, im pretty sure it is correct) :)
Marta believes that the equation of the line of best fit for the scatterplot below is y=5/9x+23/9. Which statement best summarizes why Marta is likely incorrect?
Answer:
A
Step-by-step explanation:
as you can see the y intercept for y=5/9x+23/9
the y intercept is positive (23/9)
and if you drew a line to imitate those points the y intercept(where the line toches the y axis) would be negative.
so A
Answer:
A
Step-by-step explanation:
What is the answer for 438*1824
Answer:
798,912
Step-by-step explanation:
How many minutes are in nine and one fourth hours?
Answer:
555 minutes
Hope this helps!
Answer:
555 9x60=540
540+15=555 there is your answer
remember that 1/4 of an hour is fifteen minutes
pls mark brainliest
Step-by-step explanation:
Simplify 5x - 3(x – 2) – x
Answer:
x - 2
Step-by-step explanation:
distributive property first since you stick with parentheses first (PEMDAS)
so 3x - 6 is what it would be.. then you would want to think of the equation as 5x - 3x - 2 - x. seems somewhat complicated but to others not so much.
Next you’re gonna just want to subtract, but you should probably make the problem easier so you can just subtract across right? it’d be 5x - 3x - x - 2. that way all the x variables are together and anything else is separate.
5x - 3x is 2x - x or - 1x is x or 1x.
i think just using the variable x for it being 1 is easier so now we have the problem x - 2.
anything else? nope! that’s the simplified equation.
hope that i was able to help :)
Solve for x
A )180
B)55
C)115
D)82.5
Answer:
55
Step-by-step explanation:
AB // DC
∠B + ∠C = 2x + 15 + x = 180
3x = 165
x = 55
Answer: B. 55
Step-by-step explanation:
You need to know that within one parallelogram, the same-side interior angles are supplementary angles, meaning that they add up to 180°.
---------------------------------------------------------------------------------------
Given
(2x+15)+x=180
Expand parenthesis
2x+15+x=180
Combine like terms
3x+15=180
Subtract 15 on both sides
3x+15-15=180-15
3x=165
Divide 3 on both sides
3x/3=165/3
x=55
Hope this helps!! :)
Please let me know if you have any questions
Find the slope of the graph
Answer:
Step-by-step explanation:
-2/5
Twenty pounds of bean are distributed equally into 16 bags to give out at the food bank.How many pounds of beans are in each bag?eter your answer in simplest form.
Answer:
1.25
Step-by-step explanation:
step 1.so if there is 20 pounds between 16 bags ok
step 2. divide 20 by 16 which equals 1.25
write an equivalent expression.
-2x + 7
Answer:
7-2x
Step-by-step explanation: