Emiliano divided by two instead of multiplying. To solve the equation, he had to multiply both sides by two so that he could see what x equals when it's alone (if half of x is 80, x, or two halves, is 160).
The solution of the given equation is 160. Emiliano wrong because instead of multiplying he must have divided 80 by 2.
The given equation is 1/2 x=80.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
The solution of the given equation is
1/2 x=80
⇒ x =80×2
⇒ x =160
The solution of the given equation is 160. Emiliano wrong because instead of multiplying he must have divided 80 by 2.
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This morning, the owner of Sam's Spaghetti House withdrew $180 from the restaurant's bank account to pay for an oven repair. This afternoon, he deposited $430 from lunch sales.
What is the total change in the restaurant's bank account relative to where it started?
Answer:
he had $250.00 more at the end of lunch
Step-by-step explanation:
5a + 7b - 12a + 6c - 13b - 22a + 53c
Answer:
-29a-6b+59c
Step-by-step explanation:
Shade 0.25 of the design. Write a fraction in simplest fotm to represent the shaded part of the design
[tex]\\ \sf\longmapsto 0.25[/tex]
Remove decimal[tex]\\ \sf\longmapsto \dfrac{25}{100}[/tex]
[tex]\\ \sf\longmapsto \dfrac{5}{20}[/tex]
[tex]\\ \sf\longmapsto \dfrac{1}{4}[/tex]
Answer:
[tex] \frac{1}{4} [/tex]
Step-by-step explanation:
Hey there,
[tex]0.25 \\ \\ = \frac{25}{100} \\ \\ = \frac{25 \div 25}{100 \div 25} \\ \\ = \frac{1}{4} [/tex]
Hope this helps you.
Let me know if you have any other questions:-):-)
2 ( -2 ) -8
3 ( -3 ) -18
5 ( -1 ) …
Ayudaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :(
Answer:
2 ( -2 ) -8 = -12
3 ( -3 ) -18 = -27
Step-by-step explanation:
read bot stop answering my question no link no bot fast but wrong
Answer:
Step-by-step explanation:
First Sheet, First Question
1) D
2) D
3) B
4) D
First Sheet, Second Question
a) SQR 16
b) 7/8, sqr -42
c) 3.692, 4 pie, sqr 1/4
Need help on number 10 pls due tmr!!!!
Answer:
try doing cross out way
Step-by-step explanation:
what is 0.08 as a percent.
Answer:
8%
Step-by-step explanation:
u have to multiply the number with 100
0.08 * 100
8%
Please help for questions 3 and 4 I’m stuck on those two questions and it’s dued tmrw please help
#3 is 1920 cubic inches
#4 i cant see the shape
Explanation:
the height is 1 inch so we can disregard that.
58 squared minus 38 squared is 1920 because if it was a square it would be side length 58 but we have to subtract 20 to find what is missing.
What is the slope of the line that passes through the points (-5,-7) and (4,-1)? Write your answer is simplest form
Answer:
2/3
Step-by-step explanation:
-7 - -1 = -6
-5 - 4 = -9
-6/-9= 2/3
Hope this helped!
Answer:
2/3
Step-by-step explanation:
-1-(-7) / 4-(-5)
6/9 = 2/3
What is the slope of the line that passes through the points (8, 4) and (20, –4)?
Write
your answer in simplest form.
Answer:
formula is y2-y1 ÷ x2-x1
- 4 - 4 = -8
20 - 8 = 12 simplify and we get
[tex] - \frac{ 2}{3} [/tex]
Answer: [tex]-\frac{2}{3}[/tex]
Step-by-step explanation:
-4-4=-8
20-8=12 [tex]\frac{-8}{12}[/tex]
HELPPPPPPPP!!! ASAP!!!
What is wrong with the following equation of a circle? (x - 5)^2 +(y +2)^2 =-36
Answer:
i think its (5, -18) i'm pretty sure
Step-by-step explanation:
9514 1404 393
Answer:
the number on the right needs to be positive
Step-by-step explanation:
The given equation describes a circle with an imaginary radius.
The number on the right is the square of the radius. We expect the radius to be a real number, so its square will be positive.
find the inverse of -3y+5x=18
Answer:
-3x +5y = 18
Step-by-step explanation:
The inverse relation is found by swapping x and y.
What percentage of the population was opposed to building both the swimming pool and the soccer complex? (Hint: This is not the same as the percentage of the population who support neither the swimming pool nor the soccer field. That percentage of the population is opposed to either the swimming pool or the soccer complex or both. Here we’re looking for the percentage of the population opposed to both. Use your knowledge of complementary events to find the answer.)
Answer:
Could you explain all step by step what is the number or percentage we have to build or add to the swimming pool ?
Step-by-step explanation:
Answer:
The percentage of people who are opposed to building both the swimming pool and the soccer complex is 1 – 0.25 = 0.75.
Step-by-step explanation:
If two cans of shrimps cost $14, at this unit rate what is the cost of 9 cans of shrimps?
Answer:
63 shrimps
Step-by-step explanation:
14÷2=7
the cost of 1 shrimp
7×9=63
the cost of 9 shrimps
simplify i^29 GIVE ME ANSER
Answer:
Simplify the expression using the definition of an imaginary number
i=√-i
iStep-by-step explanation:
Plot each rational number on the number line.remember that fractions are part of a whole so a fraction like 1/2 will go halfway between 0 and 1.Also remember that a number like 1 3/4 is read as “one and three-fourths”
Answer:
the ancwer is -2 -1 0 1 2
Step-by-step explanation:
Yes
Calculate the population variance of a population with data of {-3, - 5, 8, 11, 13}.
341/5
7.386
54.56
68.2
Answer:
Step-by-step explanation:
First find the airithmatic mean
(-3-5+8+11+13)/5= 4.8
[tex]\frac{(-3-4.8)^2+(-5-4.8)^2+(8-4.8)^2+(11-4.8)^2+(13-4.8)^2}{5}= 54.56[/tex]
The variance of this population data set is 69.45.
How to find the variance of the set of data?To find the variance of the set of data we first need to calculate the mean of the set.
mean = sum of each element / number of elements
mean = (-3 -5 + 8 + 11 + 13)/5 = 3.8
Now, using the formula for variance
s² = (X - mean)²/ (n- 1)
s² = (-3 - 3.8)² + (-5 - 3.8)² + (8 - 3.8)² + (11 - 3.8)² + (13 - 3.8)² / (5- 1)
s² = 46.24 + 77.44 + 17.64 + 51.84 + 84.64 / 4
s² = 277.8/4
s² = 69.45
Hence, the variance of the data is 69.45.
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How do i round 3,842,532 to the nearest 1,000?
Answer:
until you only look at the thousands and hundreds place and if the hundred is 5 or more you round the thousands up one
so 3,842,532 rounded the the nearest 1000 is 3,843,000
Dan Dayle started a business by issuing an $85,000 face-value note to First State Bank on January 1, Year 1. The note had an 7 percent annual rate of interest and a five-year term. Payments of $20,731 are to be made each December 31 for five years. What is the principal balance on January 1, Year 2?
Brian went to the bank and withdrew $250 from his checking account.
The receipt that printed stated that Brian has $324 left in his account.
How much money did Brian have in his checking account before he
withdrew money? Create an equation to represent the situation. Make
sure to identify and label your variable. Solve for the variable and
describe your answer. Show your work and prove your solution to be
correct.
Answer: $574
Step-by-step explanation:
574 - 250 = 324
find the circumference of both circles
Answer:
2πr=circumference
Step-by-step explanation:
small circle has 12 inc length so it's circumference is 2*π*12 =24π
big circle has 14 İnc Length so it has 2*π*14=28
find the exact value of
Answer:
value of what?
Step-by-step explanation:
I don't see the question
Sorry I need help with this pls >> it math
Answer:
1.(2,4)
2.(-4,2)
3.(-2,8)
HELP ASAP I WILL GIVE BRAINLIEST!!
Consider the function F(x)= x³ +½x² −2x +3. Use calc and algebra to find any and all stationary points on the graph of the function.Precalc need help ASAP
Solution:
the above function has more than one root or more than one solution. The derivative of the function represents the slope of the tangent line to the curve
F(x)= x³ +½x² −2x +3, F'(x) = 3(x3-1)+(1/2)(2)(x2-1)-2(x1-1)+0
F'(x)=3x2+x-2 is the slope of the tangent line
setting the slope =0 and solving the quadratic equations, you find all the
critical points of interest
3x2+x-2=0, solve by factoring (3x-2)(x+1)=0, then 3x-2=0, x= 2/3
and x+1=0, x=-1 substituting these values of x in the original equation
you get the corresponding values of F(x) such that;
F(x)= x³ +½x² −2x +3, F(x)=(2/3)3+1/2(2/3)2-2(2/3)+3
= 8/27+4/18-4/3+3 = 8/27+2/9-4/3+3/1 = 59/27 and the first point is
(2/3, 59/27)
F(x)= x³ +½x² −2x +3, F(x)=(-1)3+1/2(-1)2-2(-1)+3
= -1+1/2+2+3 = 9/2 and the 2nd point is ( -1, 9/2)
these two points represents points where the slope of the tangent line to the curve is 0 and could be either maximum or minimum points
You can also find the y intercepts where x = 0 F(x)= x³ +½x² −2x +3, setting x = 0, y= F(x)=3 and the point ( 0,3) is a y intercept setting y = 0, then x intercepts can be found upon solving the equation x³ +½x² −2x +3 =0
14w+3p=70.50
10w+7p=62.50
Which statements are true in explaining why it makes sense that the solution of this system is also a solution to 4w+(−4p)=8.00? Select all that apply.
Because 10w+7p is equal to 62.50, subtracting 10w+7p from the left side of 14w+3p=70.50 and subtracting 62.50 from its right side keep the two sides equal.
The equation 4w+(−4p)=8.00 is the result of adding the two equations in the system and then dividing the result by 6.
The equation 4w+(−4p)=8.00 is the result of subtracting the second equation in the system from the first equation.
The equation 4w+(−4p)=8.00 represents the difference between Mai's sales and Tyler's sales, or the result of subtracting Tyler's sales from Mai's.
The left side of the equation 4w+(−4p)=8.00 shows the difference in terms of the items sold. The right side shows the difference in dollars. The cost per wreath, w, and the cost per potted plant, p, haven't changed.
Answer:
dang this stuff is hard
Step-by-step explanation:
HELPPPPPPPPPPPP!!!!!!!!!!!!!
Answer: 6.86 × 10^12
Step-by-step explanation: click link to see answer
https://www.calculatorsoup.com/calculators/math/scientificnotation.php?operand_1=9.8%2A10%5E7&operator=multiply&operand_2=7.0%2A10%5E4&action=solve
Answer:
6.86 × 10^12
Step-by-step explanation:
Add.
(−x^4+5x^3−x^2+5x)+(−8x^4+x^3+2x^2+2)
Enter your answer, in standard form, in the box.
Answer:
-9x^4+6x^3+x^2+5x+2
Step-by-step explanation:
A right triangle has side lengths 7, 24, and 25 as shown below.
Use these lengths to find tanA, sinA, and cosA.
9514 1404 393
Answer:
tan(A) = 7/24sin(A) = 7/25cos(A) = 24/25Step-by-step explanation:
The mnemonic SOH CAH TOA can help you remember the trig ratios:
Sin = Opposite/Hypotenuse
Cos = Adjacent/Hypotenuse
Tan = Opposite/Adjacent
With respect to angle A, the sides are Adjacent = 24; Opposite = 7, Hypotenuse = 25. Then the desired trig ratios are ...
tan(A) = 7/24
sin(A) = 7/25
cos(A) = 24/25
A car travels 75 miles per hour, and a plane travels 15 miles per minute. How far (in miles) does the car travel while the plane travels 600 miles?
Answer: 50 miles
Step-by-step explanation:
600 / 15
= 40
It takes 40 minutes for the plane to go 600 miles
40 minutes is 40 / 60 hours which is 2 / 3
75 * (2 / 3)
= 50
The car travels 50 miles
Find the product of $$12\times5$$
Answer:
60
Step-by-step explanation:
(I am a bit confused of the wording / layout, but I think this is what you need!)
Key notes:
- "the product of" means multiplication
12 * 5 = 60
Answer:
60
Step-by-step explanation:
12x5=60
