Answer:(b) step 1
Step-by-step explanation:
The wrong step in the student's workings is step 1
How to determine the wrong step?The equation is given as:
x^2 - 2x - 8 = 0
Expand the equation
x^2 + 2x - 4x - 8 = 0
Factorize the equation
x(x + 2)- 4(x + 2)
Factor out x + 2
(x - 4)(x + 2) = 0
The above means that the factored equation of x^2 - 2x - 8 = 0 is (x - 4)(x + 2) = 0
This means that the step 1 of the student's step is wrong and incorrect
Read more about equations at:
https://brainly.com/question/2972832
#SPJ9
Please help. Will give brain!!
Answer: I believe it's 5 I am not sure
Step-by-step explanation:
⚠️⚠️!!!HELPPPP!!⚠️⚠️
⚠️⚠️HURRY⚠️⚠️
⚠️⚠️WILL GIVE 10 BRAINLYY⚠️⚠️
Answer:
side 'c' is the hypotenuse
side 'c' is the longest
sides 'a' and 'b' are both considered 'legs'
side 'c' is opposite the right angle
Step-by-step explanation:
the hypotenuse is always opposite the right angle
the hypotenuse is always the longest side
Answer:
■ The hypotenuse is c, or in other words, the diagonal.
■ The longest side is c, or in other words, the hypotenuse.
■ The side that is a leg includes both a & b.
■ The side that is opposite the right angle is c, or in other words, the hypotenuse.
So, I need to find out, how long one of the side lengths of the orange square is. the square is in the semicircle. you do not have any numbers given, and should use just letters.
thanks in Advance
Answer:
Assuming the square and the semicircle aren't merged somehow, and we need to calculate their full area, we should take into account:
Area of a square:
(Side length)² = 22² = 484 square inches
Area of a circle with a diameter of 22inch:
3'14 · (radius)² = 3'14 · 11² = 379'94 square inches
Since we have half a circle, the total areas to add will be:
1/2 · 379'94 + 484 = 673'97
Step-by-step explanation:
1/4 divided by 1/13 please help !
Answer:
13/4
Step-by-step explanation:
We do reciprocal of 1/13 it will be 13/1 after we multiply last answer 13/4
Answer:
3 1/4
Step-by-step explanation:
[tex] \frac{1}{4} \div \frac{1}{13} \\ \\ = \frac{1}{4} \times \frac{13}{1} \\ \\ = \frac{1 \times 13}{4 \times 1} \\ \\ = \frac{13}{4} \\ \\ = 3 \frac{1}{4} \\ [/tex]
Find The are of the shaded region
Answer:
the one you have highlighted is correct
Step-by-step explanation:
There are 5 boys and 10 girls in the glee club. Which ratio represents the number of boys in the club to the total number of students in the club? One-third One-half Two-thirds StartFraction 3 Over 1 EndFraction
Answer:
1:3
Step-by-step explanation:
Given that,
Total no. of boys = 5
Total no. of girls = 10
We need to find the ratio of the number of boys in the club to the total number of students in the club.
Total no. of students = no. of girls + no. of boys
= 5 +10
= 15
Ratio,
[tex]R=\dfrac{5}{15}\\\\=\dfrac{1}{3}[/tex]
Hence, the required ratio is 1/3 or one third.
Answer:
1/3
Step-by-step explanation:
What percent of this grid is shaded?
The image shows a grid that has 10 columns and 10 rows making 100 equal-sized squares. Seven columns are completely shaded and 6 squares in the eighth column are shaded.
A. 76%
B. 19/20%
C. 76/100%
D. 24%
Answer:
A. 76%
Step-by-step explanation:
70+6=76 squares are shaded
if a desktop computer costs $800 and a tablet costs $400, how can someone determine how many of each they can buy with $20000?
Answer:
it depends how many of each you want, you would take $800 for the price of the item or $400. then x for the amount of items you need. then put that all over your total and divide.
so it would look like this
Step-by-step explanation:
800(x)
-------------
20,000
A right triangle has legs of lengths 24 and 23 inches. Find the length of
the hypotenuse (nearest tenth).
label required
Answer:
33.2
Step-by-step explanation:
24²+²23²=1105
Square root of 33.2415
=33.2
divide round and nearest hundredths place 4.05 / 0.07
Answer:
divide round and nearest hundredths place 4.05 / 0.07 the answer would be:
57.86
Np.
7x-(3x+5)-8 = (1/2)*(8x+20) -7x +5
and
5(3x+4) -2x = 7x -3(-2x+11)
Answer:
For the first problem the answer is x=4
The second Problem the answer is no solutions
Step-by-step explanation:
7x−(3x+5)−8=1/2 (8x+20)−7x+5
7x+−3x+−5+−8=1/2(8x) +(1/2) (20)+−7x+5(Distribute)
7x+−3x+−5+−8=4x+10+−7x+5
(7x+−3x)+(−5+−8)=(4x+−7x)+(10+5)(Combine Like Terms)
4x+−13=−3x+15
4x−13=−3x+15
Step 2: Add 3x to both sides.
4x−13+3x=−3x+15+3x
7x−13=15
Add 13 to both sides.
7x−13+13=15+13
7x=28 Divide both sides by 7.
x=4
5(3x+4) -2x = 7x -3(-2x+11)
Simplify both sides of the equation.
5(3x+4)−2x=7x−3(−2x+11)
(5)(3x)+(5)(4)+−2x=7x+(−3)(−2x)+(−3)(11)(Distribute)
15x+20+−2x=7x+6x+−33
(15x+−2x)+(20)=(7x+6x)+(−33)(Combine Like Terms)
13x+20=13x+−33
13x+20=13x−33
Subtract 13x from both sides.
13x+20−13x=13x−33−13x
20=−33
Step 3: Subtract 20 from both sides.
20−20=−33−20
0=−53
There are no solutions.
Answer:
Step-by-step explanation:
7x-(3x+5)-8 = (1/2)*(8x+20) -7x +5
1. Distributive Property
7x - 3x - 5 - 8 = 4x + 20 - 7x + 5
2. Combine like terms
4x -13 = -3x + 25
3. Add 13 on both sides
4x -13 + 13 = -3x + 25 + 13
4x = -3x + 38
4. Add 3x on both sides
4x + 3x = -3x + 3x + 38
7x = 38
5. Divide by 7 on both sides
7x / 7= 38 / 7
x = 5.428571428571429
or
x = 5.4
__________________________________________________________
5(3x+4) -2x = 7x -3(-2x+11)
1. Distributive Property
15x + 20 - 2x = 7x + 6x - 33
2. Combine like terms
13x + 20 = 13x - 33
3. Subtract 20 on both sides
13x + 20 - 20 = 13x - 33 - 20
13x = 13x - 53
4. Subtract 13x on both sides
13x - 13x = 13x - 13x - 53
0 = -53 ( there is no answer for x)
Hope this helped!!!!
The revenue from selling x tickets to a concert is the represented by the function r(x)=10x. The cost for buying tickets is represented by the function c(x) = 8x+40. The profit made from selling the tickets is represented by the function p(x) = r(x) - c(x). What is p(100)? *
Step-by-step explanation:
All these fancy terms is confusing. We just need to substitute the original equations into the final problem statement.
[tex]p(x) = 10x - (8x+40) = 10x - 8x - 40[/tex]
We can then substitute 100 for x and solve.
[tex]p(100) = 10(100) - 8(100) - 40[/tex]
I am a number. I am the
difference between the side
length of a square with area
81 cm^2 and a square with
area 36 cm^2?
Answer:
3
Step-by-step explanation:
to find side length of squares take square root of areas
first square side length: 9
second square side length: 6
difference between 9 and 6 is subtraction, 9-6=3
The parabola in the figure below has an equation of the form
y = ax^2 + bx - 4.
Find the equation of the parabola
Answer:
y = - x² + 5x - 4
Step-by-step explanation:
Given that the zeros are x = 1 and x = 4 , then the corresponding factors are
(x - 1) and (x - 4) , then
y = a(x - 1)(x - 4) ← a is a multiplier
= a(x² - 5x + 4)
To find a substitute the coordinates of any other point on the parabola into the equation.
Using (2, 2), then
2 = a(4 - 10 + 4) = - 2a ( divide both sides by - 2 )
a = - 1
Thus
y = - (x² - 5x + 4) = - x² + 5x - 4 ( with a = - 1 and b = 5 )
a(1)=−13
a(n)=a(n−1)+4
find the 2nd term in the sequence
Answer:
n=2
a(2)= -13(2-1)+4
a(2) = -13(1)+4
= -13+4
= -9
pls help me and hve a nice day ;p
Step-by-step explanation:
km²
make it braintliest please
if anyone answer this question correctly will get 100 points and a marked brainllest at 1:02 just add me and answer below and its yours.
Answer:
okk thanks for free points
.............
Answer:
1. -2
2. -3
3.
a. 155x+375 >= 900
b. x>=3.38709677. or technically >=4 because you get payed at the end of a week?
Step-by-step explanation:
1. (y-y)/)x-x)
2. same thing
3 a. 155 is the rate, 375 is the starting value
b. subtract 375, divide by 155
what is the value of x
The altitude to the hypotenuse of a right triangle divides the hypotenuse into segments whose lengths are in the ratio of 1:4. The length of the altitude is 12. How long is the hypotenuse?
9514 1404 393
Answer:
30
Step-by-step explanation:
The altitude is the geometric mean of the two segments of the hypotenuse. For some scale factor x, the segments are 1x and 4x, and the altitude is ...
12 = √((1x)(4x)) = 2x
6 = x
So, the length of the hypotenuse is ...
(1x) +(4x) = 5x = 5·6 = 30
The hypotenuse is 30 units long.
Answer:
i got a stank a88 walk
Step-by-step explanation:
9.) The diagram below shows the dimensions of a shelf on a bookcase. What is the measure of storage
space of the shelf in square inches?
6.7 in. / 5.2in. / 4.3in. / 15.5in. / 7.3in. /
A. 66.65 in2
B. 34.7 in?
C. 57.72 in2
D. 47.73 in?
Answer:
Step-by-step explanation:
so its 15.5 plus 6.7 which equals 22.2 then you multiply 22.2 by 4.3 which is 95.46 the divide by two which gives us are awnser 47.73.
Evaluate 3m - 5 when m=9
Thank you!!’
-8 1\2 compare to -9 1\2
Step-by-step explanation:
-81/2 =-40.5
-91/2 =-45.5
There are 68 female teachers and 29 male teachers at Josie's high school. What is the ratio of the number of female teachers to the total number of teachers?
97:68
29:68
97:87
68:97
Not that hard but I did end up confusing myself.
I’m supposed to be graphing systems of equations. Can someone explain what to do?
Answer: x=-1, y= -3
Step-by-step explanation:
1.substitute y for -3
[2x-(-3)=1]
2.simplify
[2x+3=1]
3. Isolate x for 2x+3
x= -1,y=-3
Alex can walk 6 miles every 2 hours. How far can he walk in 11 hours?
Answer:
33
Step-by-step explanation:
Find the total amount given the original price and tax rate. Round to the nearest cent if necessary.
$15.25,7%
Given:
Original price = $15.25
Tax rate = 7%
To find:
The total amount.
Solution:
We know that,
Total amount = Original price + Tax
According to the question,
Total amount = 15.25 + 7% of 15.25
[tex]\text{Total amount}=15.25+\dfrac{7}{100}\times 15.25[/tex]
[tex]\text{Total amount}=15.25+1.0675[/tex]
[tex]\text{Total amount}=16.3175[/tex]
Round to the nearest cent (two decimal places).
[tex]\text{Total amount}\approx 16.32[/tex]
Therefore, the total value is $16.32.
Parallel lines j and k are cut by transvesal t . Which statement is true about ∠2 and ∠6
Answer:
They both equal
Step-by-step explanation:
The statement is true about ∠2 and ∠6 is corresponding angles.
What is line?A line is a straight one-dimensional figure having no thickness and extending infinitely in both directions. A line is made of a set of points which is extended in opposite directions infinitely. It is determined by two points in a two-dimensional plane. The two points which lie on the same line are said to be collinear points.
Given:
Parallel lines j and k are cut by transversal t .
We have to find statement is true about ∠2 and ∠6.
According to given question we have
Parallel lines j and k are cut by transversal t .
So,
∠2 = ∠6 ( corresponding angles)
∠1 = ∠5 ( corresponding angles)
Therefore, the statement is true about ∠2 and ∠6 is corresponding angles.
Learn more details about line here:
https://brainly.com/question/2696693
#SPJ1
On average, Shawnee drinks 1/2 of a 6 ounce glass of water in 2/3 hour. How much water does she drink in an hour?
Answer:
1/2 of 6 = (1/2)*6 = 0.5*6 = 3
Shawnte drinks 3 ounces of water in 2/3 hrs.
3 oz = 2/3 hr
3*(3 oz) = 3*(2/3 hr) .... multiply both sides by 3
9 oz = 2 hrs
She drinks 9 ounces of water in 2 hrs
9/2 oz = 2/2 hrs .... divide both sides by 2
4.5 oz = 1 hr
She drinks 4.5 ounces of water in 1 hour.
Gabrielle saves $48 of her monthly paycheck for college.
She earned $120 last month. What percentage of her paycheck
did Gabrielle save? Choices:
20%
40%
35%
70%
(If you answer correctly, you will get 15 and I can answer one of ur questions. ONLY if you get it right)
The percentage of Gabrielle paycheck is 40%. Therefore, option B is the correct answer.
What is percentage?Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
Given that, Gabrielle saves $48 of her monthly paycheck for college. She earned $120 last month.
Percentage of paycheck is
48/120 ×100
= 0.4×100
= 40%
Therefore, option B is the correct answer.
To learn more about the percentage visit:
brainly.com/question/24159063.
#SPJ2
Is 43/96 a rational number