Answer:
The solution is x = 9, y = -1.
Step-by-step explanation:
x + y = 8
x - y = 10 Adding to eliminate y:
2x + 0 = 18
x = 9 Substituting x = 9 into the first equation:
9 + y = 8
y = 8 - 9
y = -1..
3. Given the equation y = -3x + 6, what is the slope of the line? And what is y intercept?
Answer:
The slope of the line is 3 and the y intercept is 6
Step-by-step explanation:
Trust me
A stock loses $1.50 each day over a five-day period. What is the total change in the value of the stock at the end of five days? (remember to have two numbers after the decimal)
Given:
A stock loses $1.50 each day over a five-day period.
To find:
The total change in the value of the stock at the end of five days.
Solution:
Stock loses each day = $1.50
We know that, loss or reduction represented as negative change.
So, change in the value of the stock per day = -$1.50
Change in the value of the stock in 5 days = 5×(-$1.50)
= -$7.50
Therefore, the change in the value of the stock at the end of five days is -$7.50. It means, the value of the stock loses $7.50 at the end of five days.
What is the domain of f?
Answer:
(-7,7)
Step-by-step explanation:
Simplify the following expression: 15 POINTS
5(-9 + 2x) + 6(8 - 9x)
ASAP PLEASE FAST
3-44x
hope that helped if yes give me brainliest and if no draw my attention by hitting the comment section
How do you compare proportional relationships
Answer: Graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways. For example, compare a distance-time graph to a distance-time equation to determine which of two moving objects has greater speed.
Step-by-step explanation:
A game decreased in price by
1/3
After the reduction it was priced at £26.
What was the original price of the game??
Answer: £78
Step-by-step explanation
It decreased by 1/3 and after the reduction it was £26 so you have to get the other 2/3 so you multiply £26 by 3 to get the 3/3 that you need that will give you £78.
26 × 3 = £78
katya tutors and works in the college bookstore to pay for her college tuition. she makes $20 per hour tutoring and $8.50 per hour working in the bookstore.
A triangle has a perimeter of 165 cm. The first side is 65 cm less than twice the second side. The third side is 10 cm less than the second side. Find the length of each side of the triangle.
What is the length of each side of the triangle?
65 cm, 55 cm, 45 cm
55 cm, 60 cm, 50 cm
45 cm, 60 cm, 60 cm
not enough information to solve
Answer:
their is not enough information to solve this problem.
n Huda evaluated the expression below. -3(8-5)--(-7) -3(3)- - (-7) -3(9)-(-7) 27-(-7) What was Huda's error? Huda evaluated (3) 2 incorrectly. 0 Huda found the product of -3 and 9 as positive. Huda subtracted -7 from 27 incorrectly. Huda did not follow the order of operations.
Answer:
B
Step-by-step explanation:
The coach recorded the yards gained or lost by his football team during the first four plays of a game.
First play: –6 yards
Second play: 7 yards
Third play: –15 yards
Fourth play: 11 yards
How many total yards did the team get in this set of plays?
If Lily got 18 questions right on a 20 questions
test, what percentage of the questions did she
get wrong?
Answer:
She got 10% of the questions wrong !
Step-by-step explanation:
To solve this problem I used cross multiplication
[tex]\frac{x}{100}= \frac{18}{20}[/tex]
18 x 100 =1800
1800 / 20 = 90
Since they are asking what she got wrong, not what she got right, you just need to subtract.
100% - 90% = 10%
hope this helped !
Answer:
10%
Step-by-step explanation:
18/20 Questions = 0.9 or 90% she got right
2/20 Questions = 0.1 or 10% she got wrong
30 points!! WILL GIVE BRANLIEST!!Jane needs open-topped boxes to store her excess inventory at year's end. She purchases large rectangles of thick cardboard with a length of 12 inches and width of 8 inches to make the boxes. She is interested in maximizing the volume of the boxes and wants to know what size squares to cut out at each corner of the cardboard (which will allow the corners to be folded up to form the box) to do this. What is the maximum volume?
Answer: 14
Step-by-step explanation:
pakisagoat HAHAHAHAHHWHAHAH
Answer:
wdym
Step-by-step explanation:
What is the y=mx+b of this?
what is the best estimate for the product 4 times 24
Answer:
20×4=80
4×2×10=80
Step-by-step explanation:
To estimate the result of multiplication (product), round the numbers to some close numbers that you can easily multiply mentally.
One method of estimation is to round all factors to the biggest digit (place value) they have.
you need to round 24 to the nearest ten which is 20 and leave 4 as it is
Does anyone have tips on writing the middle of your story im not good at it and i need help
Answer:
What is your story about It could be the exciting part of your story!
Step-by-step explanation:
Find slope of -2,3 and 4,-5
What is the slope of the line
Answer:
[tex]\huge\boxed{\frac{1}{2}}[/tex]
Step-by-step explanation:
In order to find the slope of a line, we need to find it’s rise over it’s run.
To do this, we need to find the change in y, and divide that by the change in x between any two given points.
[tex]\frac{\Delta y}{\Delta x}[/tex]
Two points on this graph that we can compare are are (-1, 3) and (1, 4).
From -1 to 1 is 2 points. So, the change in x is 2.
From 3 to 4 is 1 point. So, the change in y is 1.
Divide the change in y by the change in x:
[tex]1 \div 2 = \frac{1}{2}[/tex]
So the slope is 1/2.
Hope this helped!
You have given an equal sided triangle with side length a. A straight line connects the center
of the bottom side to the border of the triangle with an angle of α. Derive an expression for
the enclosed area A(α) with respect to the angle (see drawing
Answer:
First case;
α < 90°
The area of the shaded triangle = 1/8·a²·sin(60)sin(α)csc(120 - α)
Second case;
α > 90°
The shaded area of the triangle = 1/8·a²·sin(60)sin(180 - α)csc(60 - α) + (a²·√3)/4
Step-by-step explanation:
First case;
α < 90°
The given parameters are;
The type of triangle = Equilateral triangle
The length of the sides of the triangle = a
The area of the triangle = 1/2×a×b×sinC
Where;
a and b are two legs (sides) of the triangle and C is the included angle
e/(sin(α)) = a/(2sin(120 - α)) = f/(sin60)
f = a·sin(60)/(2sin(120 - α))
The area of the triangle = 1/2 × a·sin(60)/(2sin(120 - α))×a/2 × sin(α)
By an online application, we have
1/2 × a·sin(60)/(2sin(120 - α))×a/2 × sin(α) = 1/8·a²·sin(60)sin(α)csc(120 - α)
The area of the triangle = 1/8·a²·sin(60)sin(α)csc(120 - α)
Second case;
α > 90°
The shaded area of the triangle = The area of the equilateral triangle - The unshaded area of the triangle
With an online tool, we have;
The shaded area of the triangle = (a²·√3)/4 - 1/8·a²·sin(60)sin(180 - α)csc(120 - (180 - α)
The shaded area of the triangle = 1/8·a²·sin(60)sin(180 - α)csc(60 - α) + (a²·√3)/4
If f(x) = -5x – 8 and g(x) = 2x + 1, then what is (f o g)(5.7)
A -36.5
B -70
C -72
D 12.4
What is |5.4|?
What is the opposite of 10?
Answer:
-10
Step-by-step explanation:
Answer:
1. 5.4
2. The additive inverse is the negative value, -10.
The multiplicative inverse (reciprocal) is 1/10.
Step-by-step explanation:
1. Since the value within the absolute value is not negative then the value remains the same.
2, The opposite of positive 10 could be -10. The reciprocal is 1/10.
Write an equation of the line passing through the points (4.15) and (-1. - 15).
Answer:
y = 6x - 9
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
Point (4, 15)
Point (-1, -15)
Step 2: Find slope m
Substitute: [tex]m=\frac{-15-15}{-1-4}[/tex]Subtract: [tex]m=\frac{-30}{-5}[/tex]Divide: [tex]m=6[/tex]Step 3: Find y-intercept b
Define: y = 6x + bSubstitute: -15 = 6(-1) + bMultiply: -15 = -6 + bIsolate b: -9 = bRewrite: b = -9Step 4: Write linear equation
Substitute in all variables.
y = 6x - 9
And we have our answer!
Please help!(fractions) if 2/3b is equal to 2/7, what is b (fractions)
Answer:
b=[tex]\frac{3}{7}[/tex]
Step-by-step explanation:
[tex]\frac{2}{3}[/tex]b=[tex]\frac{2}{7}[/tex] multiply by reciprocal
$18.79 + $2.11 + ‐$1.92 + $17.28
Solve for X. -15=22x+7
Answer:
x=-1
Step-by-step explanation:
-15=22x+7
Subtact 7 both sides
-15-7=22x+7-7
-22x=-22
Divide both sides by -22
-22x=-22
x=-1
HELPPP!!!!! AGAIN !!! MAARKING BRAINLIST! mAtH
Answer:
S = 10
Step-by-step explanation:
Proportion is 2:1
HOPE THIS HELPS
PLZZ MARK BRAINLIEST
Answer:
S = 10
Step-by-step explanation:
If they are congruent then 8 dived by 2 is 4.
To solve for S you reverse it, 5 times 2 is 10.
Amy has $725 in savings. She plans to save an additional $25 per month. What is the number of additional months Amy will need to save money in order to have exactly $1,000?
A.11
B.29
C.40
D.69
Answer:
11 months
Step-by-step explanation:
We know that Amy has a saving of $725 which she needs to make it up to $1000 by saving $25 each month.
This means that Amy needs to save $1000 - $725 = $275 more dollars to have exactly $1000 dollars.
If Amy saves $$25 each month, then the number of months that she needs to save money will be = 275 / 25 = 11 months
can you help me?
its math
Answer:
x<-72
The student divided by 6 instead of multiplying by 6
Step-by-step explanation:
Correct:
x÷6<-12
multiply each side by 6
x<-72
What the student did:
x÷6<-12
divide by 6
x÷6<-2
The student divided by 6 instead of multiplying.
Please help picture below
Answer:
9 or 23
Step-by-step explanation
It depends of if D is an endpoint or in the middle.
If D is an enpoint, the length of BM is 16-7=9.
If it’s a midpoint, then BM is 16+7=23.
Find the slope of the line y
= -1/8x + 7/6
Answer:
The slope is -1/8 and the y intercept is 7/6
Step-by-step explanation:
This equation is in slope intercept form
y = mx+b where m is the slope and b is the y intercept
y = -1/8 x + 7/6
The slope is -1/8 and the y intercept is 7/6