the distance between ‐9 and ‐1 is 8 units
Carolyn was asked to solve the following system of equations. Her work is shown.
What error did Carolyn make? Identify her mistake and explain the error.
1. Carolyn did not subtract 4 from both sides of the equation.
2. Carolyn did not distribute the -2 to both terms
3. Carolyn did not substitute x + 2 for y
4. Carolyn did not substitute 3 for x to find the value of y for the solution
Answer:
Carolyn did not distribute the -2 to both terms
Step-by-step explanation:
This was how Carolyn solved the second step:
[tex]3x-2(x+2)=7\\3x-2x+4=7[/tex]
She did multiply both terms in the parentheses by 2, but she did not change the sign for the 4. It should instead be -4 since a negative number multiplied by a positive number will always make a negative number.
Here is the correct way of solving it:
[tex]3x-2(x+2)=7\\3x-2x-4=7[/tex]
I hope this helps!
Please help Z and Y
Answer:
10=Z and 10=Y
Step-by-step explanation:
since it is a 45, 45, 90 triangle
both Z and Y will be the same length
the hypotenuse has a length of [tex]x\sqrt{2}[/tex] with x being the length of the legs
Since the length of this triangle's hypotenuse is [tex]10\sqrt{2}[/tex] the side length would be 10
Hope that helps :)
1 1/2 is_____% of 7 1/2
Answer:
1 1/2 is__11/15___% of 7 1/2
Step-by-step explanation:
Given
Number - [tex]7\frac{1}{2} = \frac{15}{2}[/tex]
Let X % of [tex]\frac{15}{2} = \frac{11}{2}[/tex]
X % is thus equal to
[tex]\frac{11}{2} * \frac{2}{15} \\\frac{11}{15}[/tex]
A salesman earns 7% commission on all the merchandise that he sells. Last month he sold $6000 worth of merchandise. How much commission (in dollars) did he earn last month?
Answer: $420
Step-by-step explanation:
Percentage on commission earned = 7%
Amount of merchandise sold = $6000
Amount of commission earned = Percentage on commission earned × Amount of merchandise sold
= 7% × $6000
= 7/100 × $6000
= 0.07 × $6000
= $420
He earned $420 as commission last month.
What is the slope of the line that passes trough the points (-6,3) and (4,8)
Answer:
Step-by-step explanation:
Give the best name for the quadrilateral
with vertices (-1, 1), (1, 3), (3, 1), and
(1, -3).
Answer: kite (2 pairs of adjacent, congruent sides)
What ways to get 109
110 - 1 = 109
1 x 109 = 109
Answer:
[tex]110 - 1 = 109 \\ 200 - 91 = 109 \\ thank \: you[/tex]
Length of TV is 12π in. The diameter is?
Answer:
Diameter = 54 units
Step-by-step explanation:
Given:
Angle θ = 80'
Length of arc TV = 12π
Find:
Diameter
Computation:
Length of arc = [θ/360][2πr]
So,
12π = [80/360][2πr]
54 = 2r
r = 27
Diameter = 2r
So,
Diameter = 54 units
PLEASE PLEASE PLEASE PLEASE HELP LOL
Answer:
graph X
Step-by-step explanation:
based on the ratio of 60 miles in 75 minutes and 80 miles in 100 minutes, the ? would be '50'
HELPP MEE ASAPPP PLSSS What is the slope of the line below? If necessary, enter your answer as a
fraction in lowest terms, using the slash (/) as the fraction bar. Do not enter
your answer as a decimal number or an equation.
(3,7) (-2,-3) MUST BE A FRACTION
Answer:
2/1
Step-by-step explanation:
Use the equation m=[tex]\frac{y2-y1}{x2-x1}[/tex]
Help 6.5.AP-23 There were 675 people in line for a rock concert. Only 486 people got into the concert. Select the percent of people in line that did NOT get into the concert. Select the percent of people in line that did NOT get into the concert. O A. 75% OB. 30% OC. 72% OD. 28%
Answer:
D. 28%
Step-by-step explanation:
675 people - 486 people that got in = 189 people left out
189 people out of 675 people = 189 / 675 = 0.28 or 28%
Miriam packed 4 T-shirts, 3 pairs of shorts and two pairs of shoes for her vacation. How many different T-shirt, short and shoe outfit combinations can she wea
Answer:
24
Step-by-step explanation:
Solve for x. PLEASE SHOW WORK AND HELP
Answer:
x= 5
by inscribing angle properties of geometry
help meeeeeeee valid answers get brainliest
Answer: 955.04 in^2
Step-by-step explanation:
find the zeros of the quadratic equation-
v(5v-7)=0
Answer:
Step-by-step explanation:
v(5v-7)=0
We multiply parentheses
5v^2-7v=0
a = 5; b = -7; c = 0;
Δ = b2-4ac
Δ = -72-4·5·0
Δ = 49
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
v1 = −b−√Δ/2a
v2 = -b+√Δ/2a
√Δ = √49 = 7
v1 = -(−7)−7/2*5 = 0/10 = 0
v2 = -(−7)+7/2*5 = 14/10 = 1+2/5
[tex]\huge\text{Hey there!}[/tex]
[tex]\huge\textbf{We start off with this current equation:}[/tex]
[tex]\mathbf{v(5v - 7) = 0}[/tex]
[tex]\huge\textbf{Solving for the answer to your question:}[/tex]
[tex]\mathbf{v(5v - 7) = 0}[/tex]
[tex]\huge\textbf{Convert your current equation to:}[/tex]
[tex]\mathbf{1v(5v - 7) = 0}[/tex]
[tex]\huge\textbf{Distribute v or 1 within the parentheses:}[/tex]
[tex]\mathbf{\rightarrow 1v(5v) + 1v(-7) = 0}[/tex]
[tex]\mathbf{\rightarrow 5v^2 - 7v = 0}[/tex]
[tex]\huge\textbf{Factor the left side of the equation:}[/tex]
[tex]\mathbf{v(5v - 7) = 0}[/tex]
[tex]\huge\textbf{Fator each of the sides to equal to 0:}[/tex]
[tex]\mathbf{v = 0\ OR\ as\ in\ 5v - 7 = 0 }[/tex]
[tex]\huge\textbf{Simplify the current equation above:}[/tex]
[tex]\mathbf{v = 0\ or\ v = \dfrac{7}{5}}[/tex]
[tex]\huge\textbf{Thus, the answer should most likely be:}[/tex]
[tex]\huge\boxed{\mathsf{v = 0\ or\ v = \dfrac{7}{5}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]Baker ate 3/4 pound of fried shrimp. Jadarius are three times as much as Baker, and Darrick ate 20 ounces of fried shrimp. How many total ounces of fried shrimp did they eat altogether?
IF YOU GET THIS RIGHT I WILL GIVE YOU 12 POINTS
3 qt 1 pt = ?pt
how many pints does 3 qt and 1 pt equal
Fourteen percent of the town's population is over the age of 65. If there are 320
residents over the age of 65, approximately what is the town's population?
Answer:
2,285.7143
Step-by-step explanation:
There are two ways of doing this.
#1: Take 320, and divide it by the 14%. This should get you how many people are eqivlelent to 1 percent. When I did it out, 320/14 is equal 22.857143...
Remember this is 1%, and we need to find 100%. So we need to multiply the 1%, which was 22.857143, by 100.
This should get you 2,285.7143.
#2 Take your 100%, and divide it by the 14% that make up the 65+ population. This should get you 7.1428571.
Now you just have to multiply this number by the amount of 65+ residents, which is 320. So you should multiply 320x7.1428571.
This should get you the same exact answer, 2,285.7143
Answer:
2,285.7143
Write the number in 2 equivalent forms as a fraction, decimal, or percent.
20
20
Answer:
11/100 as a fraction
.11 as a decimal
step-by-step explanation:
find x. give your answer in the simplest form
Answer:
16
Step-by-step explanation:
sin = adjacent ÷ hypotenuse.
sin 45 = x ÷ 23
0.71 = x ÷ 23
0.71 × 23 = x
x = 16.26
~ 16.
Answer:
Step-by-step explanation:
using the Pythagorean theorem a² + b² = c²
in this triangle a = x and b = x so x² + x² = c² c is the hypotenuse
x² + x² = c²
2x² = c² since c = 23 solve for x
x² = c² / 2
x = ± √(c² / 2)
x = ± √(23² /2)
= ± √(529 /2)
= ± √(264.5)
= 16.26 x can't be negative
That is correct but it doesn't answer the question
x = ??? / √xx
sin 45 = √2 / 2 which equals x / 23
√2 / 2 = x / 23
x = 23 (√2 / 2)
= 23 (√2) / 2 divide the √2 numerator and demenator
= 23 (√2)/√2 / (2 / √2)
= 23 / (2 / √2)
Sorry I have no idea what goes in the green box
Can someone help me with this. Will Mark brainliest.
Find x. Round your answer to the nearest tenth.*
10 points
20
15
X
Answer:
wouldn't it be 20 because it says nearest 10 20 is close to 20 and 15 closer to 20 too
What is 3 1/5 as an improper factor?
Answer:
16/5
Step-by-step explanation:
Which system of equations is
represented by the graph?
A. y = 2x + 2
y = x + 1
B.
y = -x - 2
y = -x + 1
C.
y= -2x - 2
y = -x - 1
Answer:
The answer is C
Which table of vales can be defined by the function, y=6x-2? Please helpppp. This is hard.
Answer:
The Answer is D.
Step-by-step explanation:
You just need to plug in x for the first few, if it doesn't match go to the next option.
I tried this and figured out it's d in less than a minute.
helppppppppppppppppp
what is the x coordinate of point A?
what is the y coordinate of point D?
which point is on the x axis ?
which point is on the y axis ?
Answer:
The x-coordinate of point A is: 6
The y-coordinate of point D is: 3
The point that is on the x-axis is: Point E
The point that is on the y-axis is: Point B
Step-by-step explanation:
Hope this helps :)
Answer:
6 = x-coordinate of Point A
3 = y-coordinate of point D
E is on the x-axis
B is on the y-axis
Step-by-step explanation:
Find the Surface Area of
8 m
5 m
3 m
Answer:
S=(8*5*3)m3
=120mcube
please help dont need working out thanks.
Answer:
1646.4 m^2
Hope that helps! - And if you would like the steps, I can show them. :D
Step-by-step explanation:
(HELP) Find the measures of the angles marked with letters.
Kayla invested $88,000 in an account paying an interest rate of 8 % compounded
daily. Sadie invested $88,000 in an account paying an interest rate of 8 %
compounded quarterly. After 16 years, how much more money would Sadie have in
her account than Kayla, to the nearest dollar?
Answer:
$21847
Step-by-step explanation: