Answer:
-8.5
Step-by-step explanation:
Simplify the following equations please:)
1. 2n - 4 + 6n
2. -15 + 9m
3. 19a - 7 - 3a + 12a
4. 6(x - 3) + ( 2x - 9)
5. (3x + 8) - 6 (2.5x - 3)
Answer:
1. n = 1/2
2. m = 5/3 or 1 2/3
3. a = 1/4
4. x = 27/8
5. x = 13/6
Step-by-step explanation:
I'm just going to explain step 5 as that is what you specifically needed help with.
First, simplify the second term of the equation:
-6(2.5x-3)
= -15x + 18
(this was done by multiplying -6*2.5x which is 15x and -6(-3) which is 18)
Now, add this simplified second term back to the first term:
3x + 8 - 15x + 18
(the parentheses are unnecessary now because it is all just addition and subtraction, so the order doesn't matter)
Simplify:
-12x + 26 = 0
= -12x = -26
= x = -26/-12
= x = 13/6
if k = -3 what is the value of k + (2k - 10) ?
A. –19
B. –7
C. 1
D. –14
Answer:
A
Step-by-step explanation:
We have the expression [tex]k+(2k-10)[/tex]
We want to find the value when k is -3. So, substitute -3 for k and evaluate:
[tex]\Rightarrow (-3)+(2(-3)-10)[/tex]
Multiply:
[tex]=-3+(-6-10)[/tex]
Subtract:
[tex]=-3+(-16)[/tex]
Add:
[tex]=-19[/tex]
Therefore, our answer is A.
What is an equation of the line that passes through the points (8, 2) and (-4,5)? Put your answer in fully reduced form.
Answer:
y = -1/4x + 4
Juan chooses 4 items for his main course, 1 drink, and 1 dessert in a restaurant. The total cost of the meal is $9.80. Each main course item costs $1.10 and the dessert costs 50¢ more than the drink.
Let d represent Juan's dessert and r represent his drink.
Select True or False for each statement
Answers:
A) TrueB) FalseC) FalseD) TrueE) True===========================================
Explanation:
The two items given
"Juan choses 4 items for his main course""each main course item costs $1.10"tells us that he spends 4*1.10 dollars on just the main course items. So that's why choice A is true.
-----------
From part A, we know that Juan spends 4*1.10 = 4.40 dollars on just the main course items. We also know the total cost of the meal is $9.80
This leaves 9.80 - 4.40 = 5.40 left over
Meaning that $5.40 is spent on dessert and drinks
The equation in part B is close, but the 4.40 should be 5.40 instead.
Choice B is false
-----------
"The dessert costs 50 cents more than the drink" means
r = d+0.50
Whatever the drink costs (d), we add on 50 cents or $0.50 to get the cost of the dessert (r). This is why choice C is false.
-----------
The system of equations we have so far is
[tex]\begin{cases}5.40 = d+r\\r = d+0.50\end{cases}[/tex]
Start with the first equation, plug in r = d+0.50, and solve for d
5.40 = d+r
5.40 = d+d+0.50
5.40 = 2d+0.50
2d+0.50 = 5.40
2d = 5.40-0.50
2d = 4.90
d = 4.90/2
d = 2.45
Each drink costs $2.45, so choice D is true because Juan only bought one drink.
-----------
Lets use this value of d to find r
r = d+0.50
r = 2.45+0.50
r = 2.95
Each dessert costs $2.95, making choice E true as well (since he only bought one dessert).
The number can be best described as a(n)
Answer:
Fraction
Step-by-step explanation:
10000 rounded nearest 10
What is the slope intercept form of this line?
Answer:
the desired equation is y = (-3/4)x + 7
Step-by-step explanation:
If you start at (0, 7) and move along the line to (4, 4), you'll see that x increases by 4 (this is the 'run') and y decreases by 3 (this is the 'rise'). Thus, the slope of this line is m = rise/run = -3/4.
Let's use this m = -3/4 and the point (0, 7) to write the equation of this line.
(0, 7) is actually the y-intercept.
Thus, the desired equation is y = (-3/4)x + 7.
How do you understand
% ahh!!!
Answer:
what
Step-by-step explanation:
Which linear function represents the line given by the point-slope equation y + 7= -2/3 (x+6)
A) f(x) = -2/3x – 11
B) f(x) = -2/3x -1
C) f(x) = -2/3 + 3
D) f(x) = -2/3 + 13
[tex]y + 7 = - \frac{2}{3}(x + 6) \\ [/tex]
[tex]y + 7 = - \frac{2}{3}x - 4 \\ [/tex]
Subtract sides -7
[tex]y = - \frac{2}{3}x - 4 - 7 \\ [/tex]
Thus ;
[tex]y = f(x)= - \frac{2}{3}x - 11 \\ [/tex]
So the correct answer is (( A )) .
What trait do animals and protists have in common? A. both animals and protists are sometimes made up of many cells B. both animals and protists have cells with a nucleus C. neither animals nor protists can make their own food
(Pls answer I’ll mark brainliest
Protozoa are protists that resemble animals. Single-celled eukaryotes called protozoa have several characteristics in common with animals, both animals and protists have cells with a nucleus, hence option B is correct.
What is eukaryotes?Eukaryota is a varied domain of creatures whose cells have a nucleus, and its members are referred to as eukaryotes. Eukaryotes include all animals, all plants, all fungi, and many unicellular creatures.
They, along with the two categories of prokaryotes, the bacteria and the archaea, make up a significant group of living organism.
A eukaryotic organism that isn't an animal, a plant, or a fungus is considered a protist. Protists do not constitute a natural group, or clade, despite the likelihood that they have a common ancestor with other eukaryotes.
Therefore, option B is correct.
Learn more about eukaryotes, here:
https://brainly.com/question/6663522
#SPJ2
Explique, de forma resumida, o significado dos números que expressam porcentagens nas orações a seguir. A) 10% dos alunos de uma escola não têm animal de estimação. B) 19% dos livros de uma biblioteca precisam ser catalogados. C) Segundo a Pesquisa Nacional por Amostra de Domicílio (Pnad), divulgada pelo Instituto Brasileiro de Geografia e estatística (IBGE), 51% da população brasileira é constituída por mulheres.
Answer:
Hola como esta xd lol what
(8r-5)+(-7r-8)
what is the answer
Who know this for my other math these plz
Answer:
7. c
8. d
9. c
10. c
11. b
12. d
13. c
Answer:
7. C: 80
8. D: 100
9. C: 80
Step-by-step explanation:
each line equals 180
where H is at, has a 100 above it.
that equals one angle, which is 100. That line has 2 angles at equal 100 since they are one opposite sides of each other.
you subtract 180-100= 80. That's where you get ur 80 angle from. Hope this helps, I'm bad at explaining stuff
plz help i'm adding some extra points will report if u don't actually answer the question
Answer:
[tex]-4x^2-x-19=0[/tex]
Step-by-step explanation:
Standard Form:
[tex]ax^2+bx+c=0[/tex]
Solve:
[tex]-4x^2-19=x[/tex]
Subtract x from both sides, then make standard form:
[tex]-4x^2-x-19=0[/tex]
Lena told her mother that the jeans that she bought were on sale for 10 percent off and she had saved $8.25 on them.
Percents
Total
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
100%
$8.25
$8.25
$8.25
$8.25
$8.25
$8.25
$8.25
$8.25
$8.25
$8.25
Lena’s mother wanted to know the price of the jeans before the discount to determine if Lena was shopping for jeans that were too expensive. What was the price of the jeans before the discount?
$41.25
$74.25
$82.50
$90.75
Answer:
The answer 80.25! Let me know if it is wrong!
Hope you do great!
Step-by-step explanation:
Answer:
82.25 but on the quiz it says 82.50
Step-by-step explanation:
I need Your help plish
Answer:
5
Step-by-step explanation:
Because there is zones
Sally is making a scale drawing of her apartment.
• She drew a line measuring 1 1/2 inches to represent the 12-foot width of her living room.
• The length of her living room is 18 feet.
How long a line should Sally draw to represent the length of her living room?
A. 2 inches
B. 2 1/4 inches
C. 2 1/2 inches
D. 3 inches
To rent a jet ski the Delta Water company charges a flat fee of $25 plus $7.50 per hour. If you rented a jet ski for a day of fun and were charged $70, how many hours did you rent the jet ski for?
ASAP!!! BRAINLIEST!!
PLS HELP!!! SHOW ALL WORK +STEPS!! Thx!
Answer:
6 hours
Step-by-step explanation:
$25 + $7.50x = 70
first subtract the flat fee of 25 from 70 to get $45.
then divide 45 by $7.50 to get the total hours spent
45 divided by 7.50 is 6
Hope this helps!
21 is what percentage of 30?
Answer:
.7
Step-by-step explanation:
30/.7 is 21
Answer:
.7
Step-by-step explanation:
21/30=.7
Help, please
Giving you 39 points!!
Answer:
n = 10
Step-by-step explanation:
The triangles are equal by SSS theorem, therefore the 2 angles given with a variable must be equal.
The formula to convert temperature measurements from degrees Fahrenheit (F) to degrees Celsius (C) is shown below.
C = 5/9(F - 32)
What is the Celsius equivalent of 90 degrees Fahrenheit? Round the answer to the nearest degree.
A. 16
B. 32
C. 64
D. 88
The equation = ( + ) can be used to calculate the distance, , traveled by a body moving with a stv0atsuniform acceleration, , in time, , where is the initial velocity of the body. The steps to solve the equation atv0for are:v0Step 1: = + v0atStep 2: − = atv0Which properties are applied to obtain step 1 and step 2?multiplication property of equality and subtraction property of equality
(A) division property of equality and addition property of equality
(B) multiplication property of equality and addition property of equality.
(C) division property of equality and subtraction property of equality
RIGHT ! Somebody help
At the beginning of the season, a golf coach buys 118 sleeves of golf balls. Each sleeve costs $8.
Which best explains if it is better to overestimate or underestimate the amount of money the coach needs to buy the golf balls?
A. It is better to overestimate to make sure the coach has enough money to buy the golf balls.
B. It is better to overestimate so the coach can buy more golf balls than he originally plans.
C.It is better to underestimate so the coach knows exactly how much money he needs to buy the golf balls
D. It is better to underestimate to make sure the coach dose not spend more money than he wants to on golf balls
Answer:
The answer to this problem is A
Step-by-step explanation:
it is better to over estimiate so that he dosent need more money when he goes to buy the gold balls.
Im available on Mondays to Thursdays during 8:00 A.M to 4:00 P.M
--Priya
5y + 2(11 - 4y) = 82 + y
Help Needed Asap
Answer:
y=−15
Hope this helps! Please mark Brainliest!
Answer:
y = -15
Step-by-step explanation:
5y + 2(11 - 4y) = 82 + y
open parenthesis
5y + 22 - 8y = 82 + y
-3y + 22 = 82 + y
add 3y to both sides of the equation
-3y + 22 + 3y = 82 + y + 3y
22 = 82 + 4y
subtract 82 from both sides of the equation
22 - 82 = 82 + 4y - 82
-60 = 4y
divide both sides by 4
-60/4 = 4y/4
-15 = y
Which of the following could be scaled copies of rectangle A with measures 8 in by 12 in?.
A. 16 in by 28 in
B. 4 in by 6 in
C. 36 in by 48 in
D. 24 in by 40 in
E. 16 in by 9 in
Answer:
B: 4in by 6in
Step-by-step explanation:
4 is half of 8 and 6 is half of 12
Blueberries cost $4.00 per pound.
1. How many pounds of blueberries can you buy for $1.00?
Answer:
1/4 of a pound
Step-by-step explanation:
Because if 1 pound costs 4 dollars then you want to buy some blueberries for 1 dollar, you split the blueberries into fourths
is 800 cm greater than 8 cm
Answer:
100
Step-by-step explanation:
nathan packs 25 boxes in 2 hours how many can he pack in 30 min shfit
Answer: 6
Step-by-step explanation:
30 minutes is a quarter of 2 hours, so if he can pack 25 boxes in 2 hours, he can pack a quarter of that in 30 minutes. A quarter of 25 is 6.25 cant pack half a box, it’s a whole box or nothing. So you round down to 6 boxes. 6 boxes is your answer.
Which is better tacos or cheeseburgers
Answer:
tacos bro :P
Step-by-step explanation:
Answer:
I like taco's better.. :D
Step-by-step explanation:
What’s the equation of the line?
Answer:
where's the line?
There is no picture uploaded
Step-by-step explanation:
