Answer:
The percent error of the cyclist's estimate is 5.63%
Step-by-step explanation:
Percentages
The cyclist estimates he will bike 80 miles this week, but he really bikes 75.5 miles.
The error of his estimate in miles can be calculated as the difference between his estimate and the real outcome:
Error = 80 miles - 75.5 miles = 4.5 miles
To calculate the error as a percent, we divide that quantity by the original estimate and multiply by 100%:
Error% = 4.5 / 80 * 100 = 5.625%
Rounding to the nearest hundredth:
The percent error of the cyclist's estimate is 5.63%
The answer. X=7 Ik that
Answer:
C: 147°
Step-by-step explanation:
Based on looking, the most appropriate answer should be C, which is 147°.
Hello' this is my last question can someone please help me
(please don't just put a random answer just to take my points)
*puts a random answer just to take your points*
JK lol sorry
Answer~If we are solving for x, then your answer would be
8x²~x = 0.110
10x~x = 1.140
How i did it~first x:[tex]\frac{10-\sqrt{68} }{16} = \frac{5-\sqrt{17} }{8}[/tex] =0.110
second x:[tex]\frac{10+\sqrt{68} }{16} = \frac{5+\sqrt{17} }{8}[/tex] =1.140
------------------------------------------------------------------------hope I helped :P
Have a good day!!~
the ratio of boys to girls in a class is 4 : 5 how many girls are there in a class if 12 boys are in the class
Answer:
15
Step-by-step explanation:
Hey! Pretty stranger :D
AsnwEr:
Number of girls in class = 15GivEn:
The ratio of no. of boys to no. of girls in a class is 4:5.Number of boys in class = 12To find:
Number of girls in class?Solution:
☯ Let number of girls be x.
Given that,
The ratio of no. of boys to no. of girls in a class is 4:5.Therefore,
→ 12/x = 4/5
→ x = 12 × 5/4
→ x = 60/4
→ x = 15
∴ Hence, number of girls in a class is 15.
A telephone marketer earns a 14% commission on their sales each week. In one week, their sales amounted to $920.
1a
First, find 10% of their total sales.
Answer:
I love u plz don't report
4x - 2y = 5 and y = 3x - 1
Answer:
4x_2y=5
4x=5+2y
x=5+2y/5
now, y=3x_1
putting value of x in second question
In this way you can do
2x-y=-2 what is the answer for y?
Answer:
x2+2=Y
Step-by-step explanation:
Percent equations the question is blank % of 75 = 30
Answer:
40
Step-by-step explanation:
30/75 = .4
Answer:
40%
Step-by-step explanation:
Start by doing 30 ÷ 75 which gives you 0.4
0.4 as a percentage is 40%
Find percentage from decimals by moving the decimal place two times to the right.
at an amusement park, children are charged an entrance fee of $20 plus $3 per ride and adults are charged an entrance fee of $28 plus $4 per ride. Identify your variable with a 'let' statement and write expressions for both children and adults that represent the cost for each group.
Answer:
T=3r+20 for the children and T=4r+28 for the adults
Step-by-step explanation:
Let r equal the amount of rides the person took, let T equal the total cost of the trip
Use the order of operations to evaluate this expression: 7 + (5 – 9)2 + 3(16 ÷ 8).
Answer:
= 7 + (5 – 9)2 + 3(16 ÷ 8)
= 7 + (-4)2 + 3(2)
= 7 + (-8) + 6
= -1 + 6
= 5
Step-by-step explanation:
Remember to use PEMDAS when solving.
How do you solve this?
Look at attached file please...I'm really confused!
Answer:
X=18, Y=6
Step by Step Explanation:
This is a little long winded.. Let's solve for Y first.
First looking at the problem, you can note a few things. First of all, there is an Isosceles triangle, and there is an equilateral triangle. Where they connect, there is a 90° angle.
Now, all equilateral triangles have the same angle measurement. 60°. Now, if you look where the right angle is, it is showing a 60° angle, a total of 90°, and an unknown area. So simply subtract. 90-60=30. Divide that by 5, and you have your answer of 6.
Now let's solve X. X is very simple. On an isosceles triangle, the two top sides are the same length. And one of the top sides is the same size as the equilateral triangle. And on equilateral triangles, all sides are the same.
So the 11 transfers over to the X side. So let's make a small equation. 11=X-7. To make it even, let's add 7 to both sides. 11+7=X+7-7. Simplify to get 18=X, which is your answer.
Answer:
X=18 y=6
Step-by-step explanation:
explain and solve
how many solutions?
Answer:A) no solutions
Step-by-step explanation:
1) set both problems equal to each other
2) subtract four from each side
3) subtract 2x from each side
4) 10 does not equal 0
Answer:
No solution
Step-by-step explanation:
As soon as you minus the equations from each other, the y's and x's cancel out therefore there is no solution
please help meeeeeeeeeeee
Answer:
78°
Step-by-step explanation:
42+60=102
180-102=78
Answer:
Step-by-step explanation:
first find the final interior angle since we need it to find the exterior
60 + 42 = 102
180 - 102 = 78 degrees
then we just have to do 180 - 78 bc we have a straight line and straight lines are always 180 degrees
180 - 78 = 102 degrees
x = 102
you honestly could just take the 2 values you already know and add them and use that lol
hope this helps <3
I NEED HELP ASAP IN THE PICTURE ABOVE
Answer:
Step-by-step explanation:
Even numbers are those that can be divided by 2.
3440 and 7802
Odd numbers are the rest
4893, 1451 and 6645
Smallest to largest
1451, 3440, 4893, 6645 and 7802
Sum of even numbers
3440+7802= 11242 divided by 2(there are only 2 numbers)
11242 ÷ 2 = 5621
Is the following not a function ?
Answer:
Yes
Step-by-step explanation:
The "x" is not supposed to be the same. The input has to be different.
Comparing Functions
How much money will Bob in December have if his bank account growth stays at the same rate?
Month Bank-Acc
|
January | $5,000
February $6,700
March $8,400
April $10,100
May $11,800
the ratio of white socks to brown socks is
PLZ HELP ASAP
Answer:
0.875 is the ratio from white to brown socks.
Evaluate 1/2t + 3/8 when t= 1/4
Answer:
1/2
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
1/2t + 3/8
t = 1/4
Step 2: Evaluate
Substitute: 1/2(1/4) + 3/8Multiply: 1/8 + 3/8Add: 4/8Simplify: 1/2Simplify (-2x - 9)(-4). 8x - 36 -8x + 36 8x+ 36 -88-36
Answer:
8x+36
Step-by-step explanation:
distribute the -4
-2x times -4 + -9 times -4
8x+36
xoxo, your highness...Answer:
[tex]64x^2+648x-124[/tex]
if your question is
[tex]\left(-2x-9\right)\left(-4\right)\cdot \:8x-36-8x+368x+36-88-36[/tex]
Olivia filled 4 baskets of apples. Her friend filled up one additional basket of apples. if all of the baskets sold for a total of $160, how much money did each basket of apples cost?
Answer:
$32
Step-by-step explanation:
Since the question says that all the apples were sold for a total of $160, this means that you have to add the additional basket of the friend's to Olivia's. Since Olivia has 4 baskets of apples and her friend has 1, 4+1=5. Since you're trying to find the unit price for 1 basket, you take the total of $160 and divide it by 5 to find how much each basket of apples costed. Since 160/5 is 32, $32 is your answer.
Help pls help me!!!!!
Answer:
C
Step-by-step explanation:
This is your answer because when you do the math you get c as your answer.
Hope this help:)
pls mark brainly
Answer:
The answer is C
Step-by-step explanation:
You had $72.31 at the beginning of the month but you deposited $11.27 and $14.76 so if you add all of those you get $19.84
Have a great day!
Please consider marking brainliest
^-^
Find the midpoint of the line segment with the given endpoints.
(-10,-4), (6,-5)
Solve for x
(I’ve tried everything I can think of, but I still haven’t been able to solve this. Please help!)
Answer:
x = 6
∠2 = 75
Step-by-step explanation:
In the given triangle two sides are equal and so it is an isosceles triangle. So, the angles opposite to equal sides are equal
11x + 9 + 11x + 9 + 30 = 180 {Angle sum property of triangle}
11x + 11x + 9 +9 +30 = 180
22x + 48 = 180
22x = 180 - 48
22x = 132
x = 132/22
x = 6
∠2 = 11*6 + 9 = 66 +9 = 75
2. Solve the system of equations.
1
ży 22
—1
x + 3y = 2 = 10
11/x + 2
+ z = -4
9514 1404 393
Answer:
(x, y, z) = (2, 1, -5)
Step-by-step explanation:
There are numerous equation solvers available on the web. The attached result is from one of them.
__
You may find it easier to solve these by hand if you eliminate fractions.
2x -y +z = -2x +3y -z = 10x +0y +2z = -8The first step is to look to see what you have, then formulate a strategy for getting a solution. Because the equations containing y have opposite coefficients, one of which is -1, we choose to use those to eliminate y. Immediately, we will have two equations in x and z.
If you multiply the first equation by 3 and add that to the second, then you will eliminate y. The third equation already has y eliminated, so you will then have two equations in x and z.
3(2x -y +z) +(x +3y -z) = 3(-2) +(10)
6x -3y +3z +x +3y -z = -6 +10
7x +2z = 4 . . . . [eq4]
Subtracting the third equation from this eliminates z, so you have ...
(7x +2z) -(x +2z) = (4) -(-8)
6x = 12
x = 2
Substituting into the third equation gives ...
2 +2z = -8
2z = -10
z = -5
Then using the first equation, you have ...
y = 2x +z +2 = 2(2) +(-5) +2 = 1
(x, y, z) = (2, 1, -5)
HELP I HAVE 10 MINUTES!!
-109+9x=86-4x
Answer:
x=15
Step-by-step explanation:
[tex]-109+9x=86-4x\\ +109+4x=+109+4x\\13x=195\\x=15[/tex]
add 109 to both sides and add 4x to other sides
divide 13 by 195
Please help. If this isn't done by today i'm grounded :(
A _____ magnet can be made by rubbing a permanent magnet the same way
along an item. The alignment of atoms does not last long.
permanent
temporary
atomic
polar
Answer:
B. temporary
Step-by-step explanation:
The last sentence says that the alignment of atoms does not last long.
Answer:
B. temporary
Step-by-step explanation:
SOMEONE HELP ASAP PLS!!
Point K lies at (-3,4). Point K is reflected over the y-axis and then translated 7 units down to produce K'. Which rule could have been used to produce K’ from K?
Answer:
K(x,y) →K'(-x, y-7) (B)
Step-by-step explanation:
what slope of line passess through 4,1 and -2,-4
Answer:
A slope..... I can't do math
Step-by-step explanation:
Does the blue on the graph represent a function ?
Answer:
Nope
Step-by-step explanation:
It doesnt. Functions look like that
select Yes or No to indicate whether each of the ordered pairs is most likely a solution to the equation represented by the graph
Answer:
(-1, 4)
Step-by-step explanation:
From the graph we see that;
At x = 0, y has a value of 1
At x = 2, y has a value of 1
At x = 1, y has a value of 0
At x = -1, y has a value of 4
Looking at the given options, the only ordered pair that corresponds to a correct reading on the graph as earlier observed is; (-1, 4)
Answer:
no
no
yes
Step-by-step explanation:
You bought a can of black beans last week that cost $1.34. This week, the store advertised a sale where 5 cans of beans cost $6.00. You bought one can of beans this week as well. Find the cost per can, and determine how much less the can of beans cost this week compared to last week.
Answer:
1. $1.2
2. $0.14
Step-by-step explanation:
Step one:
given data
Black beans last week that cost $1.34
Step two:
This week's price
5 cans of beans cost $6.00
The cost per can is
= 6/5
=$1.2
The difference in price
=1.34-1.2
= $0.14