Randy solved the following problem: 7/8 + 9/15. He said, "I can add 7 and 9 to get 16 and add 8 and 15 to get 23. The answer is 16/23. " Is Randy correct? Explain your answer.

Answers

Answer 1

He added two fractions by adding the numerators and adding the denominators. That is incorrect.

To add two fractions, you must first have he same denominator in both.
Then you add the numerators and write the same denominator. You do not add the denominators.

Related Questions

Choose the correct ordered pair !!

Answers

It is B.

x+y=3
y=9

To solve the equation you would substitute 9 in for y (in the first equation) and get
x+9=3
You would then subtract 9 from both sides of the equation to get
x=-6
B is the only choice where -6 is first in the ordered pair, but just to make sure, you could substitute -6 back in to the equation to get
-6+y=3
Add 6 to both sides to get y=9, and you know that the correct ordered pair is
(-6,9)

First, let's plug the information we have into the equation.
x + 9 = 3

Next, you would have to do is isolate the x. To do this, you would subtract both sides by 9.
x + 9 = 3
x = -6

So, this is what we know.
y = 9
x = -6

Now, all you would have to do is change them into coordinates. (x,y)
(-6,9)

Your answer would be B. (-6,9).

I hope this helps!

Devin made some mistakes. Identify where he made each mistake:

24 ÷ 6 x (5 – 1)

= 24 ÷ 6 x 4
= 24 ÷ 24
= 1

Answers

When doing the order of operations and you are put in a situation where you do two different operations, solve the problem from left to right.
In this case instead of doing 6*4 first do 24/6 first.

The great pyramid in Egypt was built around 2560 BC over the years it has lost 30 feet of height off its top and is now 451 feet tall. Find the original height of the great pyramid

Answers

You add 30+451= 481

A quarter-circle with a diameter of 4 meters. What is the area?

Answers

First, just find the area of the whole circle:

πr²
π(2)²
4π

Now, just multiply by 1/4.

4π * 1/4
π

Hope this helps!

Evaluate the expression choose the best answer 8P3

A. 6,720
B. 876
C. 1,680
D. 336

HELP!!!!!

Answers

8P3
= 8! / (8-3)!
= 8 x 7 x 6 x 5! / 5!
= 8 x 7 x 6
= 336

answer
D. 336

a model rocket launches into the sky. An observer on the ground measures the angle of elevation to the rocket at its peak height to be 67 degrees. How high did the rocket get if the observer was 100' away from the launchpad?

Answers

Use a right triangle and trigonometry.
The angle is 67 deg.
The adjacent leg is the 100 ft side of the triangle along the ground.
The opposite leg is the unknown height, h.

tan x = opp/adj

tan 67 = h/100

h = 100 * tan 67

h = 100 * 2.36

h = 236

Answer: 236 ft

What is the slope of a line that is perpendicular to the line y = 8x + 5?

Answers

perpendicular lines, slope is opposite and reciprocal
y = 8x + 5 has slope = 8
so perpendicular line slope = -1/8

answer
-1/8

Answer: [tex]\dfrac{1}{8}[/tex]

Step-by-step explanation:

The given equation of a line : [tex]y = 8x + 5[/tex]

We know that general Slope-intercept form of equation is given by :-

[tex]y=mx+c[/tex], where m is the slope of the line.

When we compare the given equation the general slope intercept form of equation , we get

Slope of line = 8

We know that the product of slopes of two perpendicular line is -1.

Let m be the slope of line that is perpendicular to the line [tex]y = 8x + 5[/tex], then we have

[tex]-8\times m=-1\\\\\Rightarrow\ m=\dfrac{1}{8}[/tex]

The function b(n) = 12n represents the number of baseballs b(n) that are needed for n games. how many baseballs are needed for 15 games?

Answers

Given that the function b(n) = 12n represents the number of baseballs b(n) that are needed for n games.

Then the number of baseballs needed for 15 games is given by b(n) = 12(15) = 180.

What is the new price of s shirt that is on sale for 50% off and has an original price of $50?

Answers

50%=1/2 or 1 half. 50/2=$25

Final answer:

To calculate the new price of the shirt on a 50% sale off its original price of $50, divide the original price by 2, resulting in a new price of $25.

Explanation:

The question asks us to calculate the new price of a shirt that is on sale with a 50% discount from its original price of $50. To find the new price, you simply need to reduce the original price by the percentage of the discount. Since a 50% discount cuts the price in half, you divide the original price by 2.

Calculation:

Original price of the shirt: $50

Discount: 50% of $50 = $50 / 2 = $25

New price after discount: $50 - $25 = $25

Therefore, the new price of the shirt after a 50% discount is $25.

Simplifly by using the distributive property 4r+3(r-2)

Answers

7r-6 if you simplify that's the answer.

4r + 3(r - 2)

Let's focus on the 3(r-2)

In order to distribute this, we multiply 3 to r AND -2 each

After using the distributive property, we get the following

3(r - 2) = 3r - 6

Now, let's go back to the whole equation

4r + 3(r - 2)

= 4r + 3r - 6

Combine like terms

7r - 6

That's your answer.

Have an awesome day! :)

My father is currently 13 times as old as my daughter. next year, my father will be 11 times as old as my daughter. how many years old is my father now?

Answers

suppose my daughter is x years old now, my father is 13x years old
next year my daughter will be x+1 years old, my father will be 13x+1, which is also 11(x+1)
so 13x+1=11(x+1)
13x+1=11x+11
2x+10
x=5
father is 13x=65 years old now.

Evaluate (7² - 9 ) ÷ ( 55 - 35 ).
A: -34
B: 48
C: -4
D: 2

Answers

This answer is D, 2. Hope this helps

trigonometry word problem

Answers

Where’s the problem at??

If three people had three cookies how many ways can they distribute the cookie

Answers

The first cookie can be distributed in 3 ways to the first person.
The second cookie can be distributed in 2 ways to the second person.
There is only one way to give the last cookie to the third person.

Total number of ways = 3*2*1 = 3! = 6

Answer: 6

How can 32 over 6 be expressed as a decimal?

Answers

That would be 5.333333 reapeating

all i did is use a calculator and i got 5.33333333

Suppose you pay $21 for a pair of shoes that was originally $30. What was the percent of decrease in price for the shoes? Set up an equation, arrive at your answer, and check your work. Then clearly state your answer.

*SHOW WORK*

Answers

21 / 30 = X (Percentage paid of original price.) 21 / 30= 0.7 * 100 = 70% 100% - 70% = 30% $21 was 30% off the original price of $30

how do you do 36-7p=-7(p-5)

Answers

First, distribute the negative seven to the p and negative five in the parentheses. it should look like 36 - 7p = -7p + 35.

Next, add seven p to both sides and it cancels out. 36 -7p = -7p + 35.
+7p= +7p
Then minus thirty five on both sides. You get an inconclusive answer of 1=0

Final answer:

equation 36-7p=-7(p-5) simplifies to 36=35 after distributing and cancelling variables which results in an inconsistency. Therefore, this equation has no solutions.

Explanation:

The question involves working with linear equations. From the equation, 36-7p=-7(p-5), we will aim to isolate the variable, 'p'.

In this equation, start by distributing the -7 into the bracket. So, -7(p-5) becomes: -7*p + 7*5, which simplifies to: -7p + 35. Now, your equation should look like: 36 - 7p = -7p + 35.Next, let's cancel out -7p from one side by adding 7p to both sides. You get: 36 = 35.This is an inconsistency because 36 is not equal to 35. Therefore, this equation has no solution.

Learn more about Linear equations here:

https://brainly.com/question/32634451

#SPJ2

To find the value of an expression is called

Answers

We have learned that, in in an algebraic expression, letters can stand for numbers. When we substitute a specific value for each variable, and then perform the operations, it's called evaluating the expression. Let's evaluate the expression 3y + 2y when 5 = y.

Please help with 2 questions thank you!

Show all work please!!

Answers

1:
1 - given
2 - defination of bisector
3 - reflexive
4 - given
5 - definition of bisector
6 - ASA congruence theorem

2: SQ = SQ would be the one I would use

Question 1:
1. Given
2. Definition of an angle bisector
3. Reflexive property
4. Given
5. Definition of an angle bisector
6. ASA congruence
(You might have to double check these)

Question 2:
SQ is the line segment that would prove the triangle congruent by HL, since it is a shared side.

Have an awesome day! :)

Which congruence theorem would complete the proof shown?

SSS
SAS
ASA

Answers

the correct answer would be ASA

Answer:

ASA

C is correct

Step-by-step explanation:

We are given table of congruence of triangle.

1. Given: DC || AB and AD|| BC

2. If two lines are parallel then a tranversal line makes eight angles.

∠2=∠3 and ∠1=∠4 ( Alternate interior angle )

3 . If one side is common in two figure then reflexive property use.

CA = CA (Reflexive )

If we take two triangles ΔDAC and ΔCAB are congruent by above property.

ΔDAC ≅ ΔCAB by two angle and one side.

The property of congruence is ASA

4. ΔDAC ≅ ΔCAB by ASA

Hence, The 4th reason is ASA

What is the value of x using the pythagorean theorem ?

Answers

side a is 49
side c is 121
121-49 is 72
72 squared is your x

check the picture below.

What do you do if you're looking for least common multiple and all your numbers are prime?

Answers

It’s important to remember the distinction between “greatest common factor” and “least common multiple.” A factor of a particular number is a bit like a multiplicative LEGO piece that makes it up; they’re the numbers that other natural numbers can be broken down into by division. A multiple is the opposite; a number and the number that it’s multiplied by (say, 8 x 5) *become factors* of a new number (40, in this case).

When we talk about finding the “least common multiple” of a set of numbers, what we’re asking is this: if you list out multiples of each number, what’s the *first* number in those lists they all have in common? For instance, if we wanted to find the least common multiple between 3 and 5, we could list out their multiples:

3, 6, 9, 12, 15, 18, 21
5, 10, 15, 20, 25, 30

15 is the first multiple that appears in both lists, so the least common multiple of 3 and 5 is 15.

Four friends compared there bike riding times. Jess rode 4.25 km in 20 min. Corey rode 3.75 km in 18 min. Mia rode 3.5 km in 17 min. Zoey rode 3.6 km in 16 min.

Who rode at the greatest rate of speed?

A.
Jess

B.
Corey

C.
Mia

D.
Zoey

Answers

Jess rode 4.25 km in 20 min.
Speed = 4.25: 20 = 0.212 km/min

Corey rode 3.75 km in 18 min.
S= 3.75 : 18= 0.208

Mia rode 3.5 km in 17 min.
S = 3.5 :17 = 0.205

Zoey rode 3.6 km in 16 min.
S= 3.6 :16 = 0.225

The greatest rate of speed : ZOE with 0.225 km/min

Need help

Kendra is making a large salad for a party. She buys lettuce for $2.25 per pound and tomatoes for $2.65 per pound. She spends at least $8.

Let x represent the number of pounds of lettuce that Kendra buys. Let y represent the number of pounds of tomatoes that Kendra buys.

Which inequality represents this situation?

A. 2.25x+2.65y>8

B. 2.25x+2.65y<8

C. 2.25x+2.65y≤8

D.2.25x+2.65y≥8

Answers

The answer is D.
I hope this helps.

Answer: The correct option is

(D) [tex]2.25x+2.65y\geq8.[/tex]

Step-by-step explanation: Given that Kendra is making a large salad for a party. She buys lettuce for $2.25 per pound and tomatoes for $2.65 per pound. She spends at least $8.

x represent the number of pounds of lettuce that Kendra buys and y represent the number of pounds of tomatoes that Kendra buys.

We are to select the inequality that represents the situation.

We have

total amount of money that Kendra spends on lettuce is given by

[tex]a_l=2.5\times x=2.5x[/tex]

and the total amount of money that she spends on tomatoes is

[tex]a_t=2.65\times y=2.65y.[/tex]

Therefore, the inequality can be written as

[tex]a_l+a_t\geq 8\\\\\Rightarrow 2.25x+2.65y\geq8.[/tex]

Thus, option (D) is CORRECT.

Which graph represents the solution set for -4(1-×)<-12+2×?

Answers

i will answer assuming that the equation is 4(1-x) < -12+2x

1) 4 - 4x < - 12 + 2x

2) 2x + 4x > 4 + 12

3) 6x > 16

4) x > 16 / 6

5) x > 8 / 3

So the graph is all the real numbers greater than 8/3 which may be represented by a straight line from 8/3 to the right toward infinity

//////////////////////→
---------|--------------|--------------|----------o-----|-------------->
0 1 2 8/3 3

ed is using the recipe shown to make fruit salad he wants to use 30 diced stawberries in his vruit sald how many bananas apples and pears should ed use in his fruit sald

Answers

We know that 1 serving = 4 bananas
3 apples
6 pears
and 20 strawberrys
To get 30 we need to half 20 =10 20+10=30

That means we also needs to half the other ones
1/2 of 4 = 2 4+2=6
1/2 of 3 = 1.5 3+ 1.5=4.5
1/2 of 6 = 3 6+3=9

6 Bananas
4.5 Apples
9 Pears
30 strawberries diced.

Answer:

Step-by-step explanation:

What is the measure of ∠SPQ in this rhombus?
m∠SPR = (2x+13)°
m∠QPR = (3x−12)°

Answers

The measure of ∠SPQ in the rhombus PQRS, based on ∠ SPR = (2x+13)°, and ∠ QPR = (3x-12)°, is the sum of the two angles of ∠ SPR and ∠ QPR, which equal the whole or ∠ SPQ, in other words (2x+13)° + (3x-12)Â°.

Solution:

In a Rhombus The diagonals bisect the angles.

m∠SPR=m∠QPR

Substituting the given values :

2x+13=3x-12

Subtracting 2x both sides:

13=3x-2x-12

13=x-12

Adding 12 both sides:

x=25.

m∠SPR=2x+13=2(25)+13=50+13=63

m∠SPQ=2∠SPR

m∠SPQ=2m∠SPR

m∠SPQ=2x63=126

m∠SPQ= 126 degrees

The area of a rectangle is found by multiplying the length by the width: A = lw. A certain rectangle has an area of x 2 + 7x + 12. Factor the trinomial to find the length and width of the rectangle.

Answers

Since it is given that the formula for area is length times width and the area is already given, we are going to find out the value of the width and the length by factoring. The first thing we are going to do is to find first the factors of 12. The factor that can be used for this are 4 and 3. Then, continue with the solution.

So the correct answer for this would be the last option. l = x + 4; w = x + 3.

Please mark me Brainliest and hope this helps :)

NEED ANSWER ASAP!!! a compound inequality is graphed, and its graph consists of all real number. which open sentence could have resulted in this solution set? A. r < 5 or r < -1 B. r < 5 or r > -1 C. r > 5 or r < -1 D. r > 5 or r > -1

Answers

When we join two inequalities with an “or,” we unite their graphs – we include all solutions to *both* inequalities. Let’s first look at graphs of each of the four inequalities first, and then we’ll see when we unite them.

r < 5 starts with a hollow circular mark on 5 (since 5 isn’t included in r), and includes everything from there to negative infinity

r > 5 starts with that same mark, but its solutions include everything from there to positive infinity (except 5)

r > -1 starts at -1 and includes everything from there to positive infinity (except -1), and r < -1 stretches to negative infinity (except -1).

We want to join together two inequalities so that their solutions span from negative to positive infinity (all real numbers); which of our options include negative infinity, and which include positive infinity?

Negative infinity: r < 5, r < -1
Positive infinity: r > 5, r > -1

We could try joining r > 5 and r < -1, but then we’d be exclude all of the real numbers between and including -1 and 5. The graphs of r < 5 and r > -1 pass right by each other and continue infinitely off to negative and positive infinity respectively, so all possible real numbers will be included in their combined range.

So, our solution is “r < 5 or r > -1”.

the answer is “r < 5 or r > -1”.

Five friends made 100 dollars working together.how much did each person make if the earnings are divded equally ?

Answers

• Divide: 100 ÷ 5 = 20

So each person made $20.00.

Hope this helps! :D

~PutarPotato

Other Questions

In the play, Julius Caesar, why does Brutus eventually decide to go along with the plot to kill his friend Caesar? A m ____ msica las 24 horas del da. te gusta cantar me gusta escuchar me gusta escuchar a incorrect estefana ____ en una universidad. trabaja trabajo trabajas correct vanesa y t ____ muy bien. dibujas dibujamos dibujan incorrect yo ____ a las 8:00 p.m. y t? cena ceno cenas incorrect las profesoras ____ a las 8:00a.m. llega llegas llegan incorrect la clase de economa ____ a las 4:00 p.m. terminas termina termino incorrect anala y clara ____ la pizarra con atencin. miramos mira miran How are these shortcuts (SSS, SAS, ASA, and AAS) similar to or different from those for proving triangle congruence? fill in the blank to make an equivalent ratio_ : 6 = 4 : 3 Which of the following is an example of semantic noise?a.listening to gangster rap music for the first timeb.not being able to see the blackboard from the back of the classc.getting advice from a disreputable sourced.staying at a hostile environment Department of the _______________ is the newest department in the federal government. Why might a person be reluctant to report an incident? how is the sun's energy exothermic and endothermic in its relationship to earth? Besides issuing the oil embargo, what other things did OPEC do in 1973? select all that apply.raised the price of oiloverproduced oilcut oil productiondropped the price of oil object A: has a mass of 2g a volume of .5Lobject b: has a mass of 3g and a volume of 5Lwater has a density of 1g/L, which object will sink in water?which one Will float? I will you20 points if correct AD , BD , and CD are angle bisectors of the sides of ABC . BE=12 m and BD=20 m Summarize the ways in which fiscal policy has affected our country since world war ii. The diagram shows a nucleic acid in the shape of a helix.Which sugar is present in the nucleic acid that is represented in the diagram?a) uracil b) thyminec) deoxyribosed) ribose 48.5 out of 50 as a percentage In the name of religious freedom, who left massachusetts and founded the colony of _____________. Can I get a dui driving under prescription medication How many protons and electrons are present in the mg2+ ion? how did the royal society confirm leeuwenhoek's discovery? In a unicellular organism, the cell cycle leads to reproduction of the cell and thus the organism. describe two examples of what the reproduction of cells accomplishes in a multicellular organism I NEED HELP PLEASE HELP ME!!!!!! How does deforestation affect the oxygen cycle? A.It destroys the aquifers that store oxygen. B.It increases the amount of photosynthesis. C.It increase the amount of oxygen produced. D.It reduces the amount of oxygen produced. Steam Workshop Downloader