A student evaluated −4 + (−9 12) and got an answer of 5 12. What might the student have done wrong? explain in details

Answers

Answer 1

Answer:

[tex]the \: students \: calculation \: was \\ based \:on\: addition \: of \: the \: numbers \\ without \: cosidering \: thier \: nagative \: signs.[/tex]


Related Questions

Help please:)))
Find the equation of a line perpendicular to 4x - y = 2 that contains the point (4, -2). Write the equation in slope.
intercept form.

Answers

Answer:

y = -1/4x - 1

Step-by-step explanation:

First, put the equation in slope intercept form:

4x - y = 2

4x - 2 - y = 0

4x - 2 = y

y = 4x - 2

Perpendicular lines have opposite reciprocal slopes. Since the original slope is 4, the other line's slope will be -1/4

Plug in the given point and the slope into y = mx + b, then solve for b:

y = mx + b

-2 = -1/4(4) + b

-2 = -1 + b

-1 = b

Plug in the slope and b into the equation:

y = -1/4x - 1 is the equation

(11 . 10) . 6 = 6 . (11 . 10)
true or false

Answers

Lol this is not college material is it

Answer:

True

Step-by-step explanation:

I think it's right je8e

Nash is training for a marathon and decides to train for 26 miles every week. In the first week, the ratio of the number of miles he ran to the number of miles he walked was 3:10. Use Scratchpad to draw tape diagrams to represent this ratio. How many miles did Nash run in week 11?

Answers

Answer:

78

Step-by-step explanation:

you do 3 *26

What is the value of cos(tan-1(0))?

–1
0
1
StartFraction pi Over 2 EndFraction

Answers

Answer:

answer is 1

Step-by-step explanation:

just did test on edge

The value of cos(tan^-1(0)) is 1. Therefore, option C is the correct answer.

We need to find the value of cos(tan^-1(0)).

What are the trigonometric ratios?

In mathematics, trigonometric functions are real functions which relate an angle of a right-angled triangle to ratios of two side lengths. The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).

Now, cos(tan^-1(0))

⇒tan^-1(0)=0

⇒cos(0)=1

The value of cos(tan^-1(0)) is 1. Therefore, option C is the correct answer.

To learn more about trigonometric ratios visit:

https://brainly.com/question/1201366.

#SPJ5

The midpoint M of QR has coordinates (6, 6). Point R has coordinates (5, 7). Find the
coordinates of point Q.
Write the coordinates as decimals or integers.

Answers

Answer:

(7,5)

Step-by-step explanation:

what is the volume of 2 G piece of gold? (Best answers gives brainlist answers)​

Answers

Answer:

2 grams

Step-by-step explanation:

2 grams of gold is equivalent to 2 grams

What is the total number of digits required in numbering the pages of the book, which has 76 pages?

Answers

Answer:

152

Step-by-step explanation:

Please mark as brainliest.

It costs $3.45 to buy3/4 lb of chopped walnuts. How much would it cost to purchase 7.5 lbs of walnuts? Explain or show your reasoning. l​

Answers

Answer:

$34.5

Step-by-step explanation:

because 3/4 of a pound is basically .75 of a pound. so the conversion from .75 of a pound to 7.5 pounds is just multiplying by 10. therefor you just multiply the initial price by 10

Answer:

$34.50

Step-by-step explanation:

please give me brainliest

A 2-column table with 5 rows. Column 1 is labeled Key Words with entries three, times, the difference of, nine, a number. Column 2 is labeled Replace With entries 3, times (minus), 9, h.
Write and evaluate the expression. Then, complete the statement.



three times the difference of nine and a number



Write and evaluate the expression. Then, complete the statement.

three times the difference of nine and a number

The value of the expression when h = 5 is ????

Answers

Answer:

12

Step-by-step explanation:

3(9-h) is the equation used for this problem h=5

9-5=4    3x4=12

hope this helps!

Mrs. Perez has 28 students and 5
7
of those students participate in school sports. How many of Mrs. Perez’s students participate in school sports?

Answers

Answer:39 1/5

Step-by-step explanation:

Pleaseeeeeeee, help meeeeeeee

Answers

kikaksyvjabsjxjjcjallalalalakjdiloveyouhahahahjss

what bro bye bro that’s weird bro

Evaluate the expression for a = 4, b = 5, and c = −4. 17 − 7(a − b)2 =

Answers

17 -7 ( 4 - 5 ) square = 17 -7 ( 1) = 17 - 7 ×1 = 17 -7 = 10 is the answer.

hello please will give brainliest!

Answers

Answer:

A.

Step-by-step explanation:

Just means for every 4 cans of soup, you need 3 pb jars

Cans of soup : jars of peanut butter

4:3

8:6

16:12

20:15

Find the product. Tell which strategy you used.
1. 5 X 7 X 20
2.

Answers

Answer:

The product is 700

Step-by-step explanation:

I just multiplied them If it correct plz give me brainliest thanks :)

HELP
Figure EFGH is transformed to E'F'G'H, as shown:
Which of the following sequences of transformations is used to obtain figure E'F'G'H and EFGH​

Answers

Answer:

It would be C. Hope this helps

Please help with this math problem!!!!! ASAP please thanks! The photo is attached

Answers

Answer:

The answer will be the 2nd answer!

Step-by-step explanation:

Your Welcome!!

2nd answer reflected over the y-axis

Participation Quiz 10-23-2020 NEED HELP PLZZZZZ!!!!

Question 1 options:
m∠A = _____˚

m∠B = _____˚

m∠C = _____˚

m∠X = _____˚

m∠Y = _____˚

m∠Z = _____˚

Segment AB = _____ units

Segment BC = _____ units

Segment AC = _____ units

Segment XY = _____ units

Segment YZ = _____ units

Segment XZ = _____ units

Answers

Answer:

angle A is 53°

angle B is 90°

angle C is 37°

angle X is 53°

angle Y is 90°

angle Z is 37°

AB=3

BC=4

AC=5

XY=3

YZ=4

XZ=5

Write an equation for the line that is parallel to y = 3/5x - 8 and goes through
the point (-15,-23)

Answers

Answer:

y=3/5x-14

Step-by-step explanation:

parallel lines have the same slope, so m=3/5

y=mx+b

-23=3/5(-15)+b

-23=-9+b

-14=b

y=mx+b

y=3/5x-14

find the missing
number
+ 16 = 28​

Answers

+16=28 is equal to 12
it’s the same as subtracting 28 from 16 so 28-16 is 12 and that’s your answer!

Which term completes the product so that it is the difference of squares?
(-5x-3)(-5x+______)
-9
-3
3
9
PLEASE HELP:)

Answers

Answer: 3 :)

Ignore this part it needs to be long:
hshsgfasffsgsgwggshehs






Help meeeeeeeeeeeeee with thisssss please? i’l give brainiest or whatever it is called .

Answers

Answer:

16

Step-by-step explanation:

the amount of peppers are double the amount of servings, 8x2 = 16

Answer:

16

Step-by-step explanation:

8-4/ 4-2= 2

8 x 2= 16

Julie has a bag of flour that holds 20 cups of flour. She needs 4 cups for each loaf of bread.
How many loaves of bread can she make? Explain.

Answers

5 because 20 divided 4 = 5.
she can make 5 breads because if they need 4 cups of flour to make bread and there’s only 20 cups you simply divide 20/5 and it give 4 so four loaf breads

What is the equation of this line

A. Y = 2x - 3

B. Y = -1/2x - 3

C. Y = -2x - 3

D. Y = 1/2x - 3

Answers

I think the anser c that what i think

what is the 12
th term rule of the linear sequence 13 7 1 -5 -11​

Answers

Answer:

-53, f(n) = -6(n-1) + 13

Step-by-step explanation:

given the equation to this linear/arithmetic sequence for the nth term: f(n) = -6(n-1) + 13

f(12) = -6(12-1) + 13

f(12) = -6(11) + 13

f(12) = -66 + 13

f(12) = -53

*substitute and simplify*

______________

f(n) = f(1) + d(n-1)

given f(1) = 13, f(2) = 7, and f(3) = 1

7-13 = 1-7 = -6 = d

= f(1) + d(n-1)

f(1) = 13 so

the equation must be f(n) = 13 - 6(n-1) or -6(n-1) + 13

Question 4 of 5
Quadrilateral ABCD is reflected across the x-axis. What are the coordinates
of quadrilateral ABCD?
ADLY
01/2)
ch
A. A (5,5), B (5, 1), C(2, 1), D' (1,5)
B. A' (5-5), 8 (1.-5), C'(1, -2).
D'(5-1)
C. A'(-5-5), 8'(-1,-5), C (-1.-2)
D'(-5-1)
OD. A (5,5), B'(1,5), C' (1,2), D'(5, 1)

Answers

it will definitely be C

any time there it a reflection across the x-axis the coordinates then become (x,-y)

Meredith scores a 72% on her quiz. She
misses 7 questions. What is the change in
her score in percentage points for each
question she gets incorrect?

Answers

Answer:

The answer is 4.

Step-by-step explanation:

The total percent is 100%. You subtract 100% with 72% which is 28. Then, you divide 28 with 7 and voila! The answer is 4.

The change in  her score in percentage points for each question she gets incorrect is 4%.

Using this formula

Change in score percentage=(100%-Scores %)/Number of missed questions

Where:

Scores %=72%

Number of missed questions=7 questions

Let plug in the formula

Change in score percentage=(100%-72%)/7

Change in score percentage=28%/7

Change in score percentage=4%

Inconclusion  the change in  her score in percentage points for each question she gets incorrect is 4%.

Learn more here:

https://brainly.com/question/19345514

A submarine descends to a depth of 600 feet below the surface in 10 minutes. At this rate, what integer represents the change, in feet, of the submarine's position after one minute?
I really need help.​

Answers

A submarine descends to a depth of 600 feet below the surface in 10 minutes. At this rate, what integer represents the change, in feet, of the submarine's position after one minute?

First you need to list what you're given.

A submarine descends to a depth of 600 ft below the surface in 10 minutes. The question is asking for the change of the submarine's position after one minute. This can be represented as fractions in terms of [tex]\frac{distance}{time}[/tex].

[tex]\frac{600}{10} = \frac{x}{1}[/tex]

You're looking for the value of x. First you need to cross-multiply.

[tex]600 \times 1 = 10 \times x\\600=10x[/tex]

Since you're looking for x alone, you need to divide both sides by 10. This will eliminate the 10 since x is being multiplied by 10, and 10 divided by 10 is 1, making it 1x or x.

[tex]\frac{600}{10} = \frac{10x}{10}[/tex]

[tex]60=x[/tex]

That means the submarine is descending at a rate of 60 feet per minute, which can be represented as -60.

If you're looking for the submarine's position after one minute, all you have to do is subtract 60.

600 feet below surface is represented as -600.

[tex]-600-60=-660[/tex]

The submarine's position after one minute is 660 feet below surface(-660).

Choose the simplified form of the expression,
5x + 6x?- 2x + x
I need it fast please!!!

Answers

Answer:

10x

Step-by-step explanation:

If the question mark is an accident, the answer is 10x.

5x+6x-2x+x

11x-2x+x

9x+x

10x

Hi :)

First add 5x and 6x
5x + 6x = 11x

11x -2x + x

Combine 11x and -2x to get 9x

9x + x= 10x

Hope this helps!

can someone please help me

Answers

Answer:

what do you need?

Step-by-step explanation:

Answer:

The first is

Basketball : 2

Football :0

Nd da 3rd one (donno da name) : 4

Step-by-step explanation:

Please mark as brainliest

pls help me on this question it is geometry​

Answers

Answer:

Contrapositive

Step-by-step explanation:

Original Statement: if p then q

Negation: not p

Contrapositive: if not q then not p

Inverse: if q then p

Converse: if not p then not q

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