Answer:
i. 10 units (Carol's house is 10 units on the right from Ann's house)
ii. -10 units (Carol's house is 10 units on the left to Ann's house)
Step-by-step explanation:
A number line is a system that can be used to express the location of directed number on a straight line. It has an origin which is taken to be zero (0).
In the given question, Ann's house is located at 0 of the number line. Let 1 block be represented by 1 unit on the number line.
Thus, Ben lives 8 blocks from Ann implies that Ben's house is at 8 units from Ann's house.
Given that Carol's house is 2 blocks from Ben implies that Carol's house is 2 units from Ben.
So that,
The possible locations of Carol's house depends on its position with respect to Ann's house.
i. Carol's house = 8 + 2
= 10 units
This implies that Carol's house is 10 units on the right from Ann's house.
ii. Carol's house = - 8 - 2
= -10 units
This implies that Carol's house is 10 units on the left to Ann's house.
Joe has eaten 2/5 of a pizza.Jane has eaten 1/6 of a pizza how many more pizza has joe eaten than Jane?
Joe ate 7/30 more of pizza than Jane. You can just subtract 2 uneven denominators. So you would turn them into 30 because that’s the closest highest number that can go with 5 and 6. Then multiply 2 with 6 which is 12 and then multiply 1 with 5 which is 5 now you can subtract it. 12/30-5/30=7/30.
Final Result: 7/30
What is the exact value of tan(67.5°) ?
Answer:
[tex]\sqrt\frac{2+\sqrt{2}}{2-\sqrt{2}}[/tex]
Step-by-step explanation:
correct on edge2020
The required exact value of tan(67.5°) is -2 + √(2).
What are trig ratios?If you know the lengths of two sides of a right triangle, you can use trigonometric ratios to calculate the measures of one (or both) of the acute angles.
Here,
The exact value of tan(67.5°) can be found using the half-angle identity for the tangent, which states that:
tan(x/2) = (1 - cos(x)) / sin(x)
We can use this identity with x = 135 degrees since 67.5 degrees is half of 135 degrees. So:
tan(67.5°) = tan(135°/2) = (1 - cos(135°)) / sin(135°)
We can then use the following exact values:
cos(135°) = -√(2)/2
sin(135°) = -√(2)/2
Substituting these values, we get:
tan(67.5°) = (1 + √(2)/2) / (-√(2)/2)
Rationalizing the denominator, we get:
tan(67.5°) = -2 + √(2)
Therefore, the exact value of tan(67.5°) is -2 + √(2).
Learn more about trig ratios here:
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Two apps on your phone take away points for using your phone at school. You have 140 points on the first app and 80 points on the second app when a school day begins. Each time you check your phone, you lose 10 points on your first app and $p$ points on your second app. After you check your phone ten times, you have the same number of points on each app. Find the value of $p$
Answer: p = 4
Step-by-step explanation:
For app one, you start with 140 points, and you lose 10 each time you check your phone.
Then, if you check your phone x times, you will have:
140 - x*10 points in total.
For app two, you start with 80 points, and you lose p points each time you check your phone.
Then, if you check your phone x times, you will have:
80 - x*p points left
We know that when x = 10, you have the same number of points in both apps, then we have the equation:
140 - (10)*10 = 80 - (10)*p
We can solve this for p
140 - 10*10 = 80 - 10*p
140 - 100 = 80 - 10*p
40 = 80 - 10*p
10*p = 80 - 40
10*p = 40
p = 40/10 = 4
A circle has an area of 2290.221. What is the radius? (round to the nearest whole number)
Answer: 27
Step-by-step explanation:
use the formula for the area of circle and solve for r: A=pi r^2
2290.221=pir^2 <---divide by pi
729=r^2 <--- square root both sides
27=r
For each offspring genotype in the Punnett square you just completed, determine the phenotype. In other words, what is the predicted fur color and eye color of the offspring? Using your Punnett square from the last step, fill in the predicted fraction for each phenotype in the data table below. (other ppl got it wrong, so here is the answer)
answer:
(predicted fractions)
16/16
0/16
0/16
0/16
(predicted percentage)
100%
0%
0%
0%
Answer:
(predicted fractions)
16/16
0/16
0/16
0/16
(predicted percentage)
100%
0%
0%
0%
Solve the equation.
x2 + 13x + 30 = 0
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
O A. The solution(s) is/are x =
(Type an integer or a simplified fraction. Use a comma to separate answers as needed.)
O B. There is no solution.
Given that,
An equation : [tex]x^2 + 13x + 30 = 0[/tex]
To find,
The value of x.
Solution,
We have, [tex]x^2 + 13x + 30 = 0[/tex]
We can solve it as follows :
[tex]x^2 + 10x +3x+ 30 = 0\\\\x(x+10)+3(x+10)=0\\\\(x+3)(x+10)=0\\\\(x+3)=0\ \text{and}\ (x+10)=0\\\\x=-3\ \text{and}\ x=-10[/tex]
So, the solution of the given equations are -3 and -10.
My last math question! I need help. I'm not good at math so I'm relying on who ever do this to do so correctly!!!!
Answer:
c
Step-by-step explanation:
Select the correct shapes.
Select the shapes that are similar to shape A.
Answer: Its the pink one and the green one
hope that was helpful!
Step-by-step explanation:
Answer:
pink, dark blue, and red
Step-by-step explanation:
HELP PLS!!
A landscaper wants to create a rectangular patio in a backyard. He wants it to have a total area of 148 square feet and it should be 8 feet longer than it is wide. What dimensions should he use for the patio? Round to the nearest tenth of a foot if necessary
Answer:
L=16.8
w = 8.8
Step-by-step explanation:
L = x +8
w = x
x(x+8) = 148
x^2 + 8x = 148
x^2 + 8x - 148 =0
a = 1
b = 8
c = - 148
x = [tex]\frac{-8 +/- \sqrt{8^2 + 4*1*(-148)} }{2}[/tex]
(x - 8.8)(x + 16.8) = 0
(x + 16.8) is an extraneous root.
x = 8.8 which is the width
L = 16.8
can someone help me plz
Answer:
y = 2x - 10
Step-by-step explanation:
The slope is 4 + 4 / 7 - 3 = 8 / 4 = 2
y = 2x + b
-4 = 6 + b
b = -10
Thank, 5 star, braniliest if helpful
a basketball court measure 26m by 14 m find the perimeter of the court
Answer:
900 to perimeter
Step-by-step explanation:
Solve for p. p/8 + 12 = 36
9514 1404 393
Answer:
p = 192
Step-by-step explanation:
p/8 +12 = 36 . . . . . given
p/8 = 24 . . . . . . . . .subtract 12
p = 8·24 . . . . . . . . .multiply by 8
p = 192
use the substitution method to solve the system of equations. choose the correct ordered pair
Answer:
x = 3
y = 21
(3,21) and if u want slope it will be 7 :D
Step-by-step explanation:
y = 10x - 9
y = x + 18
1. Substitute for the y
10x - 9 = x + 18
2. Add 9 onto both sides
10x - 9 + 9 = x + 18 + 9
10x = x + 27
3. Subtract x on both sides
10x -x = x - x+ 27
9x = 27
4. Divide by 9 on both sides
9x/9= 27/9
x = 3
__________________________________________________________
Now that you have x, substitute that into one of the equations
y = x + 18
y = 3 + 18
y = 21
or
y = 10x - 9
y = 10(3) - 9
y = 30 - 9
y = 21
there both the same
__________________________________________________________
x = 3
y = 21
Hope this helped!
Answer:
x +18 = 10x -9 (since they both = y, set them equal to each other. )
-9x +18 = -9 (subtract 10x from both sides, then subtract 18 from both sides)
-9x = -27 (divide both sides by -9 to isolate x)
x= 3 (take this and plug it into one of the equations to solve for y)
y = x +18 (i choose this one)
y = 3+18 (add)
y = 21 (take this and x and make a point and that's your answer)
(3,21) or C
Step-by-step explanation:
I hope this helps :)
Solve for x: x — 10 = 3х – 12
Answer:
x=1
Step-by-step explanation:
Step 1: Subtract 3x from both sides.
x−10−3x=3x−12−3x
−2x−10=−12
Step 2: Add 10 to both sides.
−2x−10+10=−12+10
−2x=−2
Step 3: Divide both sides by -2.
−2x/−2 = −2/−2
x = 1
Can someone please help me with this if I’m right or wrong:)
7th grade help me please:)
Answer:
4^9
262144
Step-by-step explanation:
WILL GIVE BRANLIEST
In each circle, chords AB and CD intersect at point X...
1.) AX = 8 and XB = 5; Find (CX)(XD).
2.) AX = 6, CX = 9, and XD = 2; Find XB.
3.) CX = 16, XD = 4, and AX = XB; Find AB.
Answer:
We have to see the circle in order to help you
Write an inequality to represent, "x is at least 30"
Answer:
x ≥ 30
Step-by-step explanation:
The "≥" sign means greater than or equal to. So the equation reads, "x is greater than or equal to 30."
Pleaseee helpppp meeeeeee
Answer:
measure of Arc FJ is 80 degrees.
Step-by-step explanation:
Key skills: High School Geometry, One Variable Equations, Angles
1)Let's look at the diagram thoroughly
2) The 2 thing we can get are:
Angle HKG and Angle IKJ are vertical angles (which means they are congruent). Angle HKG + Angle GKF + Angle FKJ = 180 (Since they all form a straight angle - A straight angle is 180 degrees in measure.)3) First we can use the fact that Angle HKG and Angle IKJ are vertical angles. This makes them congruent (Or equal in size)
We can then solve for x by making the equation: 3x-22=x+104) Solve this by moving the x's to one side, and the numbers to the other. You would then get: 3x-x=10+22
3x-x= 2x 10+22=32
2x=32
Divide by 2 on both sides and x=16.
5) We get that x=16. Now to find the measure of Arc FJ, we need to use the fact that Angle HKG + Angle GKF + Angle FKJ = 180
What we want to find is Angle FKJ. The measure of Angle FKJ would be the measure of Arc FJ
6) We can make an equation: x+10+74+Angle FKJ=180
Solve this --> x=16, so substitute it in16 + 10 + 74 + Angle FKJ=180100 + Angle FKJ = 180Angle FKJ = 80 degreesIf Angle FKJ is 80 degrees, then Arc FJ measures 80 degrees.
Hope you understood! Have a Nice Day! :D
John jogged 4.5 miles on Thursday, 7 2/5 miles on Friday, and 10.4 miles on Saturday. How many miles does John have to run in order to run 25 miles for the week
im giving 20 points
Answer:
2.7 miles
Step-by-step explanation:
25 - 10.4 - 4.5 - 7 2/5 will give you 2.7
Answer:
8 miles
Step-by-step explanation:
If we divide 70 by 50, we get the unit rate for the ratio 70 minutes for every 50 miles.
70÷50=1.4
So the runner is running 1.4 minutes per mile. We can multiply this unit rate by the number of miles:
1.4 minutes mile × 5 miles = 7 minutes
Thus it will take her 7 minutes to run 5 miles at this pace.
If it takes her 7 minutes to run 5 miles, it will take her 7÷5 = 1.4 minutes to run 6÷3=2 miles at the same pace.
If it takes her 1.4 minutes to run 5 miles, it will take her 1.4×5=7 minutes to run 4×2=8 miles at the same pace. Since 60 minutes is 1 hour, she is running at a speed of 8 miles per hour.
We found her pace in minutes per miles in part (a).
A shirt is on sale for 1 the original cost, what would be an equivalent decimal and
percent for
ONE
?
Decimal
Percent
Answer:
0.2 is the answer...........
does anyone know how to solve 2x+3y=7 and 4x-5y=25 using substitution to solve the system of equations. PLEASE HELP ONLY IF YK IT
Answer:
x = 5, y = -1
Step-by-step explanation:
2x+3y=7
4x-5y=25
Keep the second equation the same, but change the first equation so you have something to substitute into.
3y= -2x+7
y= -2/3x + 7/3
substitute into second equ.
4x + 10/3x - 35/3 = 25
put the variables on one side, and the numbers on the other.
22/3x = 110/3
divide by 3
22x = 110
x = 5
Substitute x = 5 into the first equation,
10 + 3y = 7
move numbers to one side, and variables to the other.
3y = -3
y = -1
Answer:
x = 5, y = - 1
Step-by-step explanation:
2x + 3y = 7
4x - 5y = 25
In the second equation, solve for y in terms of x:
4x - 5y = 25
- 5y = 25 - 4x
- y = 5 - 4x/5
y = - 5 + 4x/5 Now substitute this for y in equation 2x + 3y = 7
2x + 3(-5 + 4x/5) = 7
2x - 15 + 12x/5 = 7
10x/5 - 15 + 12x/5 = 7
22x/5 = 7 + 15
22x/5 = 22 Now multiply both sides by 5/22 to isolate :
x = 5
Now substitute this value (x = 5) into 4x - 5y = 25 to solve for y:
4(5) - 5y = 25
20 - 5y = 25
- 5y = 5
y = - 1
You can check that these are correct by substituting x = 5 and y = -1 into the above equations to make sure they check out.
need help on this asap pleaase
What is the perimeter of ABCD?
perimeter =
Answer:
38
Step-by-step explanation:
All you have to do to find the perimeter of a 2D shape is to add the sides and put the unit of measurement at the end of your answer.
Perimeter of ABCD is 38 units.
Perimeter of a quadrilateralPerimeter of a quadrilateral is given by the sum of the measures of all four sides.
From the picture attached,
Perimeter of the given parallelogram = AB + BC + CD + DA
= 9 + 10 + 9 + 10
= 38 units
Therefore, perimeter of the given parallelogram will be 38 units.
Learn more about the perimeter of a quadrilateral here,
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Help I don’t understand please help
Answer:
x = 9.9 (or √98) (or 98¹/²)
y = 7
Step-by-step explanation:
triangle is equilateral right triangle, y = 7
x² = 7² + 7² = 98
x = 9.9 (or √98) (or 98¹/²)
Item 1
Write the word sentence as an inequality. Then solve the inequality.
The product of −2 and a number x is greater than 30.
An inequality is
.
The solution of this inequality is
.
Answer:
-2(x)>30
An inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions.
x<-15
Step-by-step explanation:
-2(x)>30 means to divide -2 on both sides which is -15.
x>-15
Next you switch the inequality because you multiplied by a negative:
x<-15
250% of a number is the same as increasing the number by what percent?
Answer:
Since I am not given an increase number i will solve for numbers 1-5
1 - 25000%
2 - 12500%
3 - 8333.333333333332% (I recommend you don't use this one)
4 - 6250%
5 - 5000 %
Each number, it will increase by 250% no matter what
Its the same as increasing by 250%
Hope this helps <3
Alazari rode her bike to school
then the hospital and back home.
If she lives 70 meters from school
and 60 meters to the hospital, how
far did she travel in all?
-
Timothy purchased a computer for $1000. The value of the computer depreciates by 20% every year.
Answer:
We can apply the straight-line method to solve for the value of the computer every year.
Step-by-step explanation:
Step one:
What is depreciation?
It can be defined as the loss of value of a commodity.
In this problem, the percent depreciation is given as 20% which means that 20% of the worth of the computer is lost every year.
We are told that the computer cost is $1000
let the number of years taken for the computer to depreciate be x
Step two:
Say we want to find the value of the computer after 1 year, the value of the computer will be
Value of computer= 1000-20/100*1000
Value of computer= 1000-0.2*1000
Value of computer= 1000-200
Value of computer= $800
Step three:
For the second year, the value will be
Value of computer= 800-20/100*800
Value of computer= 800-0.2*800
Value of computer= 800-160
Value of computer= $640
Answer:
This situation represents exponential decay. The rate of growth or decay, r, is equal to 0.2. So the value of the computer each year is 80% of the value in the previous year. It will take 3 years for the value of the computer to reach $512.
Step-by-step explanation:
PLATOOOOOO
Jayden's car gets 23 miles to a gallon of gasoline. He filled up his car's gas tank with g gallons. Write an expression that shows how far Kurt can drive on a tank of gasoline.
Answer:
D= distance covered by amount (g) gallons
D=23g
Step-by-step explanation: