Mathematics Middle School

Evaluate the numerical expression.
4/3 - (-3/4)

Answers

Answer 1
4/3 - (-3/4)

4/3 + 3/4

16/12 + 9/12

25/12 = 2 1/12

Hope I helped :)
Answer 2
This should be right, I just had to do this problem myself:

4/3 - (-3/4)
16/12 - (-9/12)
25/12
Since it doesn't say "Simplify" you would leave it at 25/12 instead of simplifying it to 2 1/12. Hope this helps!

Related Questions

A store sells T-shirts for $14 and sweatshirts for $25. They sell 200 items and earn $3,515 in sales. Which equation could be used to find the number of T-shirts (t) sold? Answer Options with 4 options A. 14t + 25(200 − t) = 3515 B. 14 + 25(200 − t) = 3515 C. 14t + 25(200 + t) = 3515 D. 14 + 25(200 + t) = 3515

Answers

The correct answer would be 14t+25(200-t)=3515, so A. 
Correct me if I'm wrong. 

The equation that could be used to find the number of T-shirts sold is [tex]14t + 25(200-t) = 3515[/tex] and this can be determined by forming the linear equation.

Given :

A store sells T-shirts for $14 and sweatshirts for $25. The store sells 200 items and earns $3,515 in sales.

The following steps can be used in order to determine the equation that could be used to find the number of T-shirts sold:

Step 1 - Let the total number of T-shirts be 't' and the total number of sweatshirts be 's'.

Step 2 - The linear equation that represents the total number of items is:

[tex]t + s = 200[/tex]

[tex]s = 200 - t[/tex]      --- (1)

Step 3 - The linear equation that represents the total earning is:

[tex]14t + 25s = 3515[/tex]    --- (2)

Step 4 - Now, substitute the value of 's' in the equation (2).

[tex]14t + 25(200-t) = 3515[/tex]

Therefore, the correct option is A).

For more information, refer to the link given below:

https://brainly.com/question/1214073

what numbers are missing 38 40 50 52

Answers

42, 44, 46, 48 because you are adding by 2 and the numbers missing from 40-50 are : 42, 44, 46, 48
You need to add 3 because that’s what they did for the others so you get 42, 44, 46, 48

HELPPPPPPPPPPPPPPPPPPP PLEASEEEE

Answers

So half of Nina's age is 10/2= 5. And since Greg is three years younger we subtract from 5 like so...
10/2=5
5-3
2
So Greg is 2 years old. I hope this helps love! :)

2 is the answer. Half of nina age is 5. 3 less than half of nina age=greg age. greg age=5-3. = 2

Wednesdays low temperature in Indianapolis with 25 degrees Fahrenheit the same day in Houston low temperature was above 56°F at least how many degrees warmer was the low temperature in Houston on the low in Indianapolis?

Answers

The required difference in the temperature between the cities of Houston and Indianapolis is 31°F.

Given that,
Wednesday's low temperature in Indianapolis with 25 degrees Fahrenheit the same day in Houston's low temperature was above 56°F at least how many degrees warmer the low temperature in Houston than the low in Indianapolis is to be determined.

What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,

Here,
The temperature of Indianapolis is 25°F.
The temperature of Houston is 56°F.
The difference in the temperature = 56°F -  25°F = 31°F

Thus, the required difference in the temperature between the cities of Houston and Indianapolis is 31°F.

Learn more about arithmetic here:

https://brainly.com/question/11424589

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Jill fish weighs 8 times as much as her parakeet. Together, the pets weigh 63 ounces. How much does the fish weigh?

Answers


[tex]63 \times 8[/tex]
=
504

Sandy can jog 3 2/5 miles in 5/6 hour. Find her average speed in miles per hour.

Answers

3 2/5 = 17/5 

(17/5 mi)/(5/6 hr) = 102/25 mi/hr

Answer:

[tex]4\frac{2}{25}[/tex] miles per hour

Step-by-step explanation:

Sandy can jog a distance  [tex]3\frac{2}{5}[/tex] miles or  [tex]\frac{17}{5}[/tex]  in the duration =  [tex]\frac{5}{6}[/tex] hours

Since speed =  [tex]\frac{distance}{time}[/tex]

We plug in the values of distance and time in the formula of speed.

Speed = [tex]\frac{\frac{17}{5}}{\frac{5}{6}}[/tex]

           =  [tex]\frac{17}{5}[/tex] ×  [tex]\frac{6}{5}[/tex]

           =  [tex]\frac{102}{25}[/tex]

           =  [tex]4\frac{2}{25}[/tex] miles per hour

Her average speed is  [tex]4\frac{2}{25}[/tex] miles per hour.

Probability?

A spinner is made using a regular pentagon. A regular pentagon has five equal sides. The equal sections are labeled with the numbers 1, 2, 3, 4 and 5. What is the probability that it will give the
result: 
(Im not talking about a fidget spinner)
A: 4? 
B: 3? 
C: a number less than 3? 
D: number greater than 3? 
E: an even number 
F: an odd number?

Answers

F : an odd number because u have to multiply it then divide then you sum it up and it’s an odd number

-3 times what equals 9

Answers

-3x = 9
x = 9 / (-3)
x = -3 <== so -3 * -3 = 9

The value to fill in the blank is -3.

So, -3 x -3 = 9.

We have,

To solve the equation -3 x __ = 9, we need to find the value to fill in the blank that makes the equation true.

Let's denote the value we need to find as "x".

When we multiply -3 by "x", it means we are adding -3 to itself "x" times.

So, the equation becomes -3 times "x" equals 9:

-3x = 9.

To solve for "x", we can divide both sides of the equation by -3:

-3x / -3 = 9 / -3

This simplifies to:

x = -3

Therefore,

The value to fill in the blank is -3. So, -3 x -3 = 9.

Learn more about expressions here:

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There are two doorways into the Funhouse the doors are similar rectangles the tall door is 9 feet high and 5 feet wide the short door is 4 feet high how wide is the short door?

Answers

There are two doorways into the Funhouse the doors are similar rectangles the tall door is 9 feet high and 5 feet wide the short door is 4 feet high how wide is the short door?

guess a number for x that would make the equation 5x-2=8 true

Answers

x=2 ,
5(2)-2=8
10-2=8
X = 2
5 (2) - 2 =8
2 is the correct answer

can you help me with 12-3(x+1)=30

Answers

Greetings!

[tex]12-3(x+1)=30[/tex]
Distribute the Parenthesis.
[tex]12-3x-3=30[/tex]
Combine like terms.
[tex]9-3x=30[/tex]
Add -9 to both sides.
[tex](15-3x)+(-9)=(30)+(-9)[/tex]
[tex]-3x=21[/tex]
Divide both sides by -3.
[tex](-3x)/-3=(21)/-3[/tex]
The Answer Is:
[tex]x=-7[/tex]

Hope this helps.
-Benjamin

In 2007, the population of North America was approximately 5.15 x 108 people and the population of South America was approximately 3.04 x 108 people.
What is the combined population of North and South America for this year?

A) 8.19 x 1016 people
B) 8.19 x 109 people
C) 8.19 x 108 people
D) 8.19 x 1064 people

Answers

The combined population of North and South America for 2007 can be simply calculated by adding the population of North America in that year to the population of South America in the same year.

The calculation is as follows:
combined population = (5.15*10^8) + (3.04*10^8) = 8.19*10^8 people

Answer : (c)

Answer:

The approximate population of north and South America combined is about 900 million or 13 percent of the worlds population

Step-by-step explanation:

Expression when m=8 and n=7 n+6m

Answers

All you have to do is plug m and n into the equation:

n+6m

Since n=7, you'll get:

7+6m

And since m=8, you'll get:

7+6(8)

And by doing the order of operations (PEMDAS), you'll start off multiplying 6 and 8, which is 48, then add 7, which is 55.

Your answer should be 55!
in the expression n+6m, subst. 8 for m and 7 for n:

7+6(8) = 55 (answer)

Real world problem for 3x-15=10

Answers

A group of men have x dollars each, then they all want to buy something that costs $15 dollars, they group their money and pay up, then they have $10 left, how much did each man start with?

I need a little help please

Answers

12: 1.57c  
13: $70.65  
14: $25.65

The difference between two numbers is less than 0.

Could both numbers be negative? Can both be positive? One negative and one positive? Explain.

Answers

The 2 numbers cannot be positive but the 2 numbers can be both positive and negative like: 2+(-3)= -1. Both numbers can also be negative like:  (-3)-(-2)=-1.

Solve the equation by factoring. 3z^2+3z-6=0

Answers

Answer:

z = 1 or z = –2

Hope this helps !

Answer:

z = 1 or z = –2

Step-by-step explanation:

d(-3+x)=kx+9 can you solve

Answers

This is wonderful, I am also currently looking for the answer for this same problem. :) Have you figured it out?

Paige has to make invitation cards for a party. If she can make 18 cards in 2 days, how many cards can she make in 30 days?

Answers

Answer:

270 cards

Step-by-step explanation:

18 cards in 2 days means 9 cards in a day. So that means that we have to multiply 9 cards a day by the number of days, which is 30.

9 x 30 = 270

Meaning, Paige made 270 cards in 30 days.

A backpacker started his day at an elevation of x feet above sea level. After a day of hiking, the backpacker was at sea level.Which equation models this situation? (asap, thanks.)

A. x + 0 = 0

B. x + x = 0

C. 0 - x = x

D. x + (-x) = 0

Answers

D. x + (-x) = 0

That is the answer because if you are x feet above sea level, to get back to sea level, which equals zero (0), you need to go down the same amount you went up (x), so you need to go down x feet (-x).
my guess is that your answer D :)

Which number line represents all of the values of x for the equation x2 = 64?

Answers

x^2 = 64
x = + - 8

hope it helps

Answer:

We are asked to find all the values of x on the number line that satisfies the given quadratic equation:

[tex]x^2=64[/tex]

We know that this is a quadratic equation so the number of values that we get on the number line is maximum 2.

on taking the square root on both the side of the equation we obtain:

[tex]x=\pm 8[/tex]

Hence we get two points on the number line.

x=8   and x= -8.

These are the discrete values we did not get any interval of the solution.

Number 18 pls help me

Answers

Lila did it correctly. The answer is 324

Following PEMDAS, we first focus on the parenthesis. So we simplify 9-3 to get 6

So we go from 
18*4^2+(9-3)^2 
to 
18*4^2+6^2 

The next step is applying exponents. In this case, squaring the terms, so we go from
18*4^2+6^2 
to
18*16+36

Next is multiplying
18*16+36
turns into
288+36

Finally, add up 288 and 36 to get 288+36 = 324

That confirms that Lila is correct

----------------------

The error that Rob made is that he computed 18*4^2+9^2-3^2 but it is NOT correct. Saying (x-y)^2 = x^2-y^2 isn't a true equation for all x and y. Again you have to simplify what is in the parenthesis first, and then you can square it. Or you must use the FOIL rule to expand out (9-3)^2


A triangle has the following angle measures: 125°, 15°, and 40°. Which of the following statements best describes its drawing?

A)It is impossible to construct a triangle with these angle measures.
B)There is one possible triangle with these angle measures.
c)There are many possible triangles with these angle measures.
D)There are many possible similar triangles with these angle measures.

Answers

Answer: Option 'D' is correct.

Step-by-step explanation:

Since we have given that

Measures of angles are as follows:

125°, 15°, 40°

As we know the sum of all angles in a triangle is supplementary i.e. 180°.

∠A+∠B+∠C=180°

125°+15°+40°=180°

Therefore, it is satisfying the angle sum property.

So, it can form a triangle.

Now, we will check for uniqueness.

As similar triangles need two angles to be equal by AA criteria , their sides can vary with two equal angles.

Hence, there is possibility to have many possible similar triangles with angle measures.

Therefore, Option 'D' is correct.

A cyclist travels downhill 125 feet Then she travels up a hill 50 feet

Answers

75 feet is the answer

Answer:

The answer would be 75

Step-by-step explanation:

125-50= 75 so that would be your answer.

Hope this helps!

What is the equation for an explicit formula

Answers

It defines the sequence as a formula in terms of n. ... Sequence: {10, 15, 20, 25, 30, 35, ...}. Find an explicit formula. This example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).

Find the x-intercept of the line:

9x + 3y = -18

Question 6 options:

a) (0,-6)
b) (2,0)
c) (-2,0)
d) (3,9)

Answers

The answer is A because 9x times 0 = 0 and 3y times -6 = -18

Soundarya borrowed Rs 7500 at compound interest at the rate of 4% p.a. then after 2 years ,the amount to be paid

Answers

If you take the 7500 x 4% x 2 yar o a calculator, you can find the answer.  Or google search a interest calculator.

I need.help please

Answers

Well the digit in the thousands place is about 100 times than the digit in the tens place. 
So 5,000> 50
The digit in the thousands place is more than the digit in the tens place.

What is 8q+6;q=2 its expression for the given value of the variable

Answers

Answer:

8q + 6 = 8*2 + 6 = 16 + 6 = 22




Twenty-one out of 70 customers at the restaurant ordered dessert. What percentage of the customers did not order dessert?

Answers

Hello!

To find your answer you must subtract first:

70 - 21 = 49

Now, how much percent is 49 of 70?

49/70 = 0.7000

0.7000 * 100 = 70.00%

49 is 70% of 70.

I really hope this helped you! :)

To check your answer: (70 × 70.00)/100 = 49
First, you would need to determine how many customers ordered dessert. 
70 - 21 = 49

Next, you would need to create an equation for this problem. Let x represent the unknown percentage. 
[tex] \frac{49}{70} [/tex] = [tex] \frac{x}{100} [/tex]

Cross multiply. 
70x = 4,900

Now, all you would need to do is isolate the x. To do this, you would divide both sides by 70. 
x = 70
x = 70%

So, 70% of the customers ordered dessert. 

I hope this helps!
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