Mathematics High School

Error Analysis
identify the first step that contains an error.
Solve: -38 = 4x -2(x + 5)
Step 1: -38 = 4x - 2x -10
Step 2: -38 = 2x - 10
Step 3: -48 = 2x
Step 4: -24 = x

​

Answers

Answer 1

Answer:

Step-by-step explanation:

-38 = 2x - 10 becomes -28 = 2x, NOT -48 = 2x.

Related Questions

1/2 plus 1/4 fractions pls help me

Answers

Answer:

that would be 3/4 my good sir

Step-by-step explanation:

1/2 = 2/4 + 1/4 = 3/4

Find the product of 2 and 3 and then take that from 8


Answers

Answer:

2

Step-by-step explanation:

2*3=6

8-6=2

2×3=6 8-6=2

Step-by-step explanation:

im was a great place

What is the image of the point (8,-6)(8,−6) after a rotation of 180 counterclockwise about the origin?

Answers

Answer:

(-8, 6)(-8, 6)

Step-by-step explanation:

The formula for 180 degree rotation is (-x, -y)

These triangles are similar.
True
Or
False

Answers

false———————————————

3. Order each set of integers from least to greatest
a. 65, 61, 59, 45,2
b. 32, 78, 48, 33, 11
c. 99,86,5,63, 31,9
d. 79, 91, 32, 27, 20​

Answers

A. 2,45,59,61,65
B. 11,32,33,48,78
C. 5,9,31,63,86,99
D. 20,27,32,79,91
Mark as brainliest plz:)
A= 2, 45, 59, 61, 65
B= 11, 32, 33, 48, 78
C= 5, 9, 31, 63, 86, 99
D= 20, 27, 32, 79, 91
Integers is just another name for numbers. :-)

Plz help this one is the last one of the day plz help

Answers

we know 20% is 15
and now we find 80%

since 20% x 4 = 80%, we can multiply 15 by 4 to get 80% of 75

15 x 4 = 60

80% of 75 = 60

Pam runs 50 meters in 12 seconds, how far can she run in 7 seconds?

Answers

Answer: 30 meters

Step-by-step explanation:

50/12=4.1666

4.1666x7=29.162 round it to 30

Answer:

29.19

Step-by-step explanation:

50/12=4.17

4.17= how far she ran in 1 second

4.17*7=29.19

Find the area of triangle ABC.
Give your answer correct to 1 decimal

Answers

Answer:

let

a=9cm

b=8cm

c=10cm

Step-by-step explanation:

now

s=(a+b+c)/2=(9+8+10)/2=13.5

area of traingle=√(s(s-a)(s-b)(s-c))=√(13.5(13.5-9)(13.5-8)(13.5-10))=34.197cm²

Plzz help
In the figure, two pairs of congruent angles are marked. What is the value of a? Express your
answer as a common fraction.

Answers

You didn’t attach a figure

Based on the abbreviations, translate the following ad into fully spelled-out sentences. The final sentence should state
how many rooms each house probably has, not counting bathrooms.
LOW CTM - 2 bdrm 1 ba. Qualifying Low monthly pymnts
555-834-3674 Norris Realty

Answers

Answer:

low cash to mortgage, two bedroom one bedroom. ​Qualifying Low monthly payments

555-834-3674 Norris Realty

5+4−6=24 plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Answers

Answer:

its false

Step-by-step explanation:

5+4-6=24

9-6=24

3=24 3 does not equal to 24 so its false

Ramon walks at a constant rate of 6mi/hr. Write an equation using the variables m and h to represent how many miles he would walk in any given hour.​

Answers

Answer:

Key for H and M. ( H-Hour)(M-Mile)

6m= h divided by 10=6

Step-by-step explanation:

6 times 10= 60 minutes. So 1 mile every 10 minutes. This was hard, but it clicked at the end. Good luck, and remember to sub out the divided and multiply by with the signs!

Valerie is 30 inches tall and casts a shadow that is 12
inches long. At the same time, ber teddy bear casts a
shadow that is eight inches long. How tall is the teddy
bear?

Answers

Answer:

20

Step-by-step explanation:

30:12 is the original ratio. So if you divide both sides by the numbers' GCF of 6 you'll get a simplified ratio of 5:2. Then multiply both sides by 4 to keep the ratio constant, then you'd get 20:8. So when the teddy bear casts a shadow of 8 inches long the actual teddy bear is 20 inches tall. Hope this helps!

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Answers

Answer:

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Adult tickets for the school musical are sold for $3.50 and student tickets are sold for $2.50 on a given night 425 tickets were sold for $ 1237.50. Wrote a system of linear equations for the problem

Answers

Answer:

3.5x + 2.50y = 1237.50

425 = x + y

Step-by-step explanation:

number of adult tickets: x

number of student tickets: y

3.5x + 2.50y = 1237.50

( value of adult ticket [3.50]* number of adult tickets [x]) + (value of student ticket [2.50] * number of student tickets [y]) = total value (1237.50)

425 = x + y

(number of adult tickets [x]) + (number of student tickets [y]) = total (425)

-5x + y = -1
10x – 2y = 2

Answers

Answer:

y= -1+5x

Step-by-step explanation:

In the equation y=3x-4 , the y-intercept is -4

Answers

Answer:

R we suppose to graph?

Step-by-step explanation:

If it’s that u want to ask if ur correct sure the y-intercept is -4

Which term could be put in the blank to create a fully simplified polynomial written in standard form?

8x3y2−_____+3xy2−4y3

x2y2
x3y3
7xy2
7x0y3

Answers

Answer:

x^2    y^2

Step-by-step explanation:

i took the test

always read the comments

Answer: a. x2y2

Step-by-step explanation:

You had a bag of fruit snacks that you shared with 2 friends. Each of you got no fewer than 5 fruit snacks. The inequality x ÷ 3 ≥ 5 NEED ASAP
solve the inequality to find the number of fruit snacks that were in the bag

Answers

Multiply by 3 on both sides.
x _>15

PLZ ANSWER QUICK IT WILL HELP A LOT!

Answers

Answer:

a

Step-by-step explanation:

all decimal numbers are:-
a) rational numbers
b) irrational numbers
c) real numbers
d) integers​

Answers

The answer fam is..... c) real numbers

Now, rename your answer so the fractional part is less than one.
5
5 11
+ = 5
8 8

Answers

answer: 2 explanation: add it to the

Rewrite in y=mx+b form
- (y + 2) = 2(2x + 1)

Answers

Answer:

y=-4x-4

Step-by-step explanation:

Answer:

y=-4x+4

Step-by-step explanation:

Use order of operations, PEMDAS, to put it in y=mx+b form.

Equation:
Question Blank
type your answer...
x +
Question Blank
type your answer...
= 180 Angle B =
Question Blank
type your answer...
degrees Angle A =
Question Blank
type your answer...
degrees

Answers

Answer:

x = 41; B = 41°; A = 77°

Step-by-step explanation:

All of the angles add up to 180 so to solve for X you do (x) + (2x-5) + (62) = 180. Solve for X and you get 41. Lastly plut the answer back into the equation.

Yesterday, a movie theater sold 278 bags of popcom. A large bag of popcorn costs $3. A small bag of popcom costs $1. In all, the more theater made shes from
popcorn sales. Write and solve a system of equations to find how many bags of each size of popcom were sold.

Answers

Answer:

They sold 175 small popcorns and 103 Large popcorns

Step-by-step explanation:

The equation is

L + S = 278 this means the total large and small popcorn that they sold is 278

3L+1S= 484  The owner of the question told me the total profit is 484

When we solve we can turn the first equation into L=-S+278

we substitute  L=-S+278 into 3L+1S=484 we get  -3S+ 834+ S= 484

-3S+834+1S=484

-2S+ 834= 484

-2S=- 350

2s= 350

s= 175

We know that they sold 175 small popcorns now. Now we Substitute 175 into L+ S= 278 and get L+ 175=278

L+175=278

L= 103

They sold 175 small popcorns and 103 Large popcorns

rationalize root 3+root 5​

Answers

Answer:

- 2

Step-by-step explanation:

To rationalise multiply by its conjugate.

The conjugate of [tex]\sqrt{3}[/tex] + [tex]\sqrt{5}[/tex] is [tex]\sqrt{3}[/tex] - [tex]\sqrt{5}[/tex] then

([tex]\sqrt{3}[/tex] + [tex]\sqrt{5}[/tex] )([tex]\sqrt{3}[/tex] - [tex]\sqrt{5}[/tex] ) ← expand using FOIL

= ([tex]\sqrt{3}[/tex] )² - [tex]\sqrt{15}[/tex] + [tex]\sqrt{15}[/tex] - ([tex]\sqrt{5}[/tex] )²

= 3 - 5

= - 2


Divide these fractions
2/3 = 3/4

Answers

Answer:

8/9

Step-by-step explanation:

I'm pretty sure after you make it a reciprocal you multiply it

Complete the square and write the quadratic equation in vertex form please show steps

Answers

Answer:

Square: [tex](x-10)^{2} -68[/tex]

Vertex: (10,-68)

Step-by-step explanation:

The length of a rectangle is shown below: On a coordinate grid from negative 6 to positive 6 on the x-axis and on the y-axis, two points A and B are shown. The point A is on ordered pair 1, 2, and the point B is on ordered pair negative 3, 2. A straight line joins the points A and B. If the area of the rectangle to be drawn is 12 square units, where should points C and D be located, if they lie vertically below the line that connects B and A, to make this rectangle? C(−3, −2), D(1, −2) C(−3, −1), D(1, −1) C(−3, −4), D(1, −4) C(−3, −5), D(1, −5)

Answers

Answer:

Would be the answer D(1, −4)  

Step-by-step explanation:

Excuse me if i'm wrong, it seems like you have the same test or almost. And this was the answer on mine. I hope it works out for you!

what is the slope of the line whose equation is y-4=5/2(x-2)​

Answers

The answer is 5/2. This equation is written in point-slope form y-y1=m(x-x1), where m is the slope.
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