A student evaluated −4 + (−9 1/2) and got an answer of 5 1/2. What might the student have done wrong?

Answers

Answer 1

Answer:

Never converted -9 1/2 into an improper fractionAdded the two numbers together instead of subtracted

I hope this helps!


Related Questions

⚠️⚠️ What’s the slope and intercept B ⚠️⚠️
MARKING BRAINLIEST ASAP

Answers

Answer:

The slope is 1 and the y-intercept is 3.

Step-by-step explanation:

HELP PLEASE!!!!Decide if the function is an exponential function. If it is, state the initial value and the base.
y = -6.1 X 3^x

Answers

Answer:

Exponential Function; base = 3; initial value = - 6.1

Step-by-step explanation:

f(4) if f(x) = 2x - 2?

Answers

Answer:

7

Step-by-step explanation:

Wherever we see an x, we just input 4 to find f(4)

f(4) = 2(4) - 1 = 8 - 1 = 7

Hope this helps!!!!!!!

What is the solution of this equation?
-5 + 7y = 8y - 6

(I need what number Y is)

Answers

Y=1 hopefully I am right

Answer:

y = 1

I hope this helps!

Find the value of X When 6-3x=5x-10x+6

Answers

[tex]6 - 3x = 5x - 10x + 6[/tex]

[tex]6 - x = - 5x + 6[/tex]

[tex]6 + 5x = 6 - 3x[/tex]

[tex]6 = 6 - 3x + 5x[/tex]

[tex]6 = 6 + 2x[/tex]

[tex]2x = 6 - 6[/tex]

[tex]2x = 0[/tex]

Product of two numbers is equal to 0 if at least one of them is 0 . Since 2 is not equal to 0 , x must be equal to 0 .

Which means :-

[tex]x = 0[/tex]

Therefore , the value of x = 0.

I really need help. It's with linear equations.

Answers

Answer:

-40

Step-by-step explanation:

pls give me brainleist

Use the diagram below to solve. The m∠ 1 = 29x + 12 and the m∠ 5 = 15x - 8. All lines that appear parallel are parallel.

Answers

Answer:

Equation: (29x + 12)° + (15x - 8)° = 180°

x = 4

m∠ 5 = 52°

Step-by-step explanation:

Given:

m∠ 1 = 29x + 12,

m∠ 5 = 15x - 8

Since all lines that appear are parallel, therefore, opposite angles of the quadrilateral are congruent.

Therefore, m<1 = m<4 = 29x + 12

m<4 + m<5 = 180° (linear pair)

(29x + 12) + (15x - 8) = 180° (substitution)

The equation above is what we would use in solving for x. Let's solve for x:

29x + 12 + 15x - 8 = 180

Collect like terms

44x + 4 = 180

Subtract 4 from both sides

44x = 180 - 4

44x = 176

Divide both sides by 44

x = 176/44

x = 4

m∠ 5 = 15x - 8

Plug in the value of x

m∠ 5 = 15(4) - 8 = 60 - 8

m∠ 5 = 52°

Identify the phrase that relates to the study of geography.
A. a record of events over time and their meanings
B. the effect living and nonliving things have on each other
C. the creation and use of goods and services
D. the study of rocks and fossils

Answers

Answer:

D

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

I did the test in MIddle school and its in the lesson that's where I found it so next time ur stuck on a question look at the lesson then if your stilll stuck ask brainly k?

This is the equation and we need to solve for y 2x+y=7

Answers

Answer: y = -2x + 7

Step-by-step explanation:

Answer:

y= -2x+7

Step-by-step explanation:

We need to keep y on one side of the equation.

2x+y= 7

=2x     -2x

y= -2x+7

Hope this helps!

This is for Geometry with angles if someone CAN PLEASE HELP SOON OMG THANK YOU SO MUCH IM STRUGGLING

Answers

Answer:

1: 90,2: 136, 3: 70, 4: 35

Step-by-step explanation:

HELP AGLEBRA 2 LOTS OF POINTS
I need help on this Exponent rules maze, please show your work so I can understand what I did wrong

Answers

Step-by-step explanation:

The picture isn’t loading... I have sat here for like 10minutes now thinking that it was my WiFi........ Ur gonna have to post another one.

PLZ HELP ASAP!!!!



In a recent survey, 62 students out of 100 choose corn as their favorite lunch item. If Washington has 3,800 students, how many students at
Washington would say corn is their favorite?

Answers

2,356 students would say corn is their favorite because if 62 out of 100 loved corn and there are 3,800 students you can multiply 62 by 38 and get your answer.

Divide. Round to the nearest tenth if necessary. 11.4 divided by 19​

Answers

11.4 divided by 19 is 0.6
The Answer is 0.6 I think

SOMEONE PLEASE HELP ASAP​

Answers

Answer:

The answer would be 15yd^2.

Step-by-step explanation:

The area of a triangle is found by...

A = (L*H) / 2

L = length

H = height

Answer:

15.0 yd

Step-by-step explanation:

 A=  h b/2 = 3·10/2=15

is 10227 a rational number?

Answers

Answer:

Yes, 10227 is a rational number

Step-by-step explanation:

10227 is whole number, an integer, a counting number. For a number to be rational it has to be a integer, a counting number, a whole number, a fraction, and a terminating decimal. A decimal that repeats like 3.3333 is also rational because it can be predicted. Pi or 3.14 is not predictable

-12-5(x + 4) = 3x
So like idk how to do this-

Answers

Answer:x=-4

Step-by-step explanation:

First distribute -5 to x+4 so -5•x and -5•4 get you -5x and -20 then bring every thing down

Now you have

-12-5x-20=3x

Then combine like terms which are -12 and -20 giving you -32

-32-5x=3x and 5 to bot side now you have

-32=8x then divide by 8 on both side giving you -4

The correct answer is x = -4

Which statement is true about the function f(x)= x?
O The domain of the graph is all real numbers.
The range of the graph is all real numbers.
The domain of the graph is all real numbers less than or equal to 0.
The range of the graph is all real numbers greater than or equal to 0.

Answers

Answer:

D

Step-by-step explanation:

[tex]\sqrt{x}[/tex] only takes positive inputs and only outputs positive integers

write 8/16 in fully reduced fraction

Answers

Answer:

1/2

hope this helps*

Step-by-step explanation:

divide the fraction by 8

A car needs 3 gallons of gas for 70 miles. How much gas would it need for 105 miles

Answers

Answer:

4.5 miles

Step-by-step explanation:

3/2=1.5 . 7-/2 = 35.  35 x 3 = 105 . 1.5 x 3 = 4.5

larry gets a 5% wage rise. his new wage is £252 per week. what was larrys wage before his wage rise

Answers

The raise was 5% which is 0.05 as a decimal.

For his new rate his original rate was multiplied by 1.05 ( original + 5%)

To find original amount, divide new amount by 1.05:

252 / 1.05 = 240

His original pay was £240

You can check by multiplying the original pay by 5% and adding:

240 x 0.05 = 12

240 + 12 = 252

Order the fraction and decimals from least to greatest.
0.78, 0.5, 3/5

Answers

Answer:

0.5, 3/5, 0.78

Step-by-step explanation:

Answer:

0.5, [tex]\frac {3}{5}[/tex], 0.78

Step-by-step explanation:

0.5= 50%

[tex]\frac {3}{5}[/tex]=60%

0.78=78%

WILL MARK BRAINLIEST!!

Answers

Answer:

The correct answer is the third one

plz mark me brainsliest!!!!!

your 6 1/4 - year investment of 40,000 at 14% compounded quarterly is worth how much now?​

Answers

Answer:

The investment of $40,000 is worth $94,529.80 now

Step-by-step explanation:

Compound Interest

It occurs when the interest is reinvested along with the principal, rather than paying it out. When it happens interest in the next period is then earned on the principal sum plus previously accumulated interest.

To calculate the final amount we use:

[tex]{\displaystyle A=P\left(1+{\frac {r}{n}}\right)^{nt}}[/tex]

Where:

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

The investment is for t=6 1/4 years = 6.25 years with an initial balance of P=40,000 at a rate r=14% = 0.14 compounded quarterly. Since there are 4 quarters per year, then n=4.

Applying the formula:

[tex]{\displaystyle A=40,000\left(1+{\frac {0.14}{4}}\right)^{4*6.25}}[/tex]

[tex]{\displaystyle A=40,000\left(1+0.035\right)^{25}}[/tex]

A=$94,529.80

The investment of $40,000 is worth $94,529.80 now

Simplify 1/4 (15-6) + 3^3 divided by 12

Answers

Answer:

Step-by-step explanation:

Use PEDMAS  method

P - Parenthesis

E - Exponents

D - Division

M - Multiplication

A- Addition

S -Subtraction

[tex]\frac{1}{4}(15-6) + 3^{3}[/tex] ÷ 12  = [tex]\frac{1}{4}*9+3^{3}[/tex] ÷ 12     {Operation inside parenthesis}

                              [tex]= \frac{1}{4}*9+27[/tex]÷ 12   {Exponents}

                             [tex]= \frac{9}{4} + \frac{27}{12}\\\\\\= \frac{9*3}{4*3} + \frac{27}{12} \\\\\\= \frac{27}{12} + \frac{27}{12}\\\\\\=\frac{27+27}{12}\\\\\\=\frac{54}{12}\\\\=\frac{9}{2}\\\\= 4\frac{1}{2}[/tex]  

Answer:

the answer is c. 4 1/2

Step-by-step explanation:

I guessed c got it right

1. Gilbert wants to know the dimensions of his (3x2 – 12x + 9) square units
rectangular lot. What is the length and width of his lot?​

Answers

3x2=6-21=18babdhjbdjdbdnhdbdnd

$260 worth of tickets were sold
Adult tickets cost $6.25 each
Child tickets cost $4
56 tickets were sold
Let x represent the number of adult tickets sold. Let y represent the number of child tickets sold.

Using the system of equations you found in the last problem, solve for the number of adult tickets sold.

Answers

Answer:

56=6.25x+4x

Step-by-step explanation:

Please help I’ll give brainiest!!

Answers

Answer:

x=-1

Step-by-step explanation:

You add like terms until you get your equation.

Answer:

x = -1

Explanation:

3(-1) - 10(-1) + 5 = 5(-1) + 17

-3 + 10 + 5 = -5 + 17

(add first before subtracting!)

12 = 12

So, the first answer, x = -1, is the correct answer.

Please mark me Brainliest! I need it to move onto the next level.

What is the slope of y = -2 + 7?

Answers

Answer:

0

Step-by-step explanation:

Assuming there is no typo in your question, the slope is 0 because the function is a horizontal line.

i believe it is 0 i can be wrong though

Suppose that R and S are points on the number line. If RS=9 and R lies at -6 where could S be located

Answers

Answer:

at 3

Step-by-step explanation:

because iin a number line we have positives and negatives if rlR is at nine then S is at 3

What are the missing parts that correctly complete the proof?

Given: point P is on the bisector of ABC.

Prove: point P is equidistant from the sides of ABC.

1. BP is the bisector of ABC- given

2. ABP≈CBP- ?

3. BXP and BYP are right angles- given

4. ?- all right angles are congruent

5. BP≈BP- ?

6. BXP≈BYP- ?

7. ?- corresponding parts of congruent triangles are congruent

8. Point P is equidistant from the sides of ABC- definition of equidistant

Answers

Answer:

Hello, I just took the test today. I will attach a screenshot. I hope I am not too late answering your question.

This question stumped me too at first. I hope this helps!

The missing parts that correctly complete the proof are;

2) Definition of a bisector

4) ∠BXP ≅ ∠BYP.

5) Reflexive property of congruence.

6) AAS congruence theorem.

7) Corresponding sides of congruent triangles are congruent.

We are given;

Point P is on the bisector of ∠ABC.

2) ∠ABP ≅ ∠CBP; The symbol ≅ means congruent. This means they are equal and it is true because it corresponds with the definition of a bisector means dividing into 2 equal parts.

4) All right angles are congruent; Congruent means equal and the two right angles we have in the image are; ∠BXP and ∠BYP. Thus, we can write; ∠BXP ≅ ∠BYP.

5) BP ≅ BP; This means that Line BP is congruent and equal to itself and this fulfils the theorem called reflexive property of congruence.

6) ΔBXP ≅ ΔBYP; This means ΔBXP is congruent to ΔBYP. Since we have established that ∠BXP ≅ ∠BYP; ∠ABP ≅ ∠CBP; BP ≅ BP. It means we have 2 corresponding angles and one corresponding side equal to each other from the 2 congruent triangles and so we can say this fulfils the AAS congruence theorem.

7) PX ≅ PY; This means PX is congruent to PY. From congruence theorem, corresponding sides of congruent triangles are congruent.

Read more at; https://brainly.com/question/11357763

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