Answer:
$21
Step-by-step explanation:
Step one:
given
she purchased an item for $15
marks up her merchandise 40%.
let us find 40% of $15
and add the answer to the initial price of the item
Step two:
40/100*15
=0.4*15
=$6
Hence the price should she set for the item is
=15+6
=$21
What is the solution to this system?
need help!!! will mark brainliest!!!!!!
Answer:
right 1 unit and down 5 units
Step-by-step explanation:
i need help......,.................
Answer:B
Step-by-step explanation:
The answer is B
everyone should know this
Gracie is sharing 75 marshminnows among 4 of her friends. If each of her friends gets
the same number of marshminnows, and she gives them as many marshminnows as
possible, how many are left for Gracie?
none
3
18
19
Answer:
18.75
Step-by-step explanation:
Finn is swimming at a constant speed.
The table compares Finn's distance from the starting point (in meters) and the time since he started (in seconds).
Time (seconds) Distance (meters)
7.25 11.6
15.25 24.4
23.25 37.2
How long does it take him to swim 50 meters?
______________ seconds
Answer:
31.25 s
Step-by-step explanation:
We'll begin by calculating the speed of Finn.
NOTE: Finn is swimming at a constant speed. Hence we shall use any of the data given in the question above to determine the speed of Finn. This is illustrated below:
Time = 7.25 s
Distance = 11.6 m
Speed =?
Speed = distance / time
Speed = 11.6 / 7.25
Speed = 1.6 m/s
Therefore, the speed of Finn is 1.6 m/s
Finally, we shall determine the time taken for Finn to swim 50 m. This can be obtained as follow:
Speed = 1.6 m/s
Distance = 50 m
Time =?
Speed = distance / time
1.6 = 50 / time
Cross multiply
1.6 × time = 50
Divide both side by 1.6
Time = 50 / 1.6
Time = 31.25 s
Therefore, the time taken for Finn to swim 50 m is 31.25 s.
Answer:
31.25 Seconds
Step-by-step explanation:
please help me on this!!
Answer:
a-4
b-3
c-1
Step-by-step explanation:
Gilda has 29 eggs in the refrigerator. Each sponge cake she makes needs 3 eggs. How
many sponge cakes can she make? (She will have eggs left over.)
9
8
10
2
Answer:
9
Step-by-step explanation:
If she uses 3eggs for one sponge cake, then, the number of cake she can make is 29/3 which is equals to 9.
The number of eggs remaining are 2
which system of equations is represented by this graph? It's you need another picture let me know please help
Write 0.047883 correct to 2 significant figures
Answer:
0.048
explanation:
What is 7200 in scientific notation?
Answer:
7.2 x 10 CUBED
Step-by-step explanation:
Step 1
To find a, take the number and move a decimal place to the right one position.
Original Number: 7,200
New Number: 7.200
Step 2
Now, to find b, count how many places to the right of the decimal.
New Number: 7 . 2 0 0
Decimal Count: 1 2 3
There are 3 places to the right of the decimal place.
Step 3
Building upon what we know above, we can now reconstruct the number into scientific notation.
Remember, the notation is: a x 10b
a = 7.2 (Please notice any zeroes on the end have been removed)
b = 3
Now the whole thing:
7.2 x 103
Step 4
Check your work:
103 = 1,000 x 7.2 = 7,200
Answer:
the answer is [tex]7.2\times \:10^3[/tex]
Step-by-step explanation:
hope this helps :)
how many times does 80 go into 766 i need it asap
Answer:
9
Step-by-step explanation:
Answer:
Step-by-step explanation:
the answer is 9.575
HELP ASAP PLEASE THANK YOU
Answer:
I believe X= 15
Step-by-step explanation:
H = -16t^2 + 84t + 100 what is maxium height
Answer:
[tex]H=210.25\ \text{units}[/tex]
Step-by-step explanation:
Given that,
[tex]H = -16t^2 + 84t + 100[/tex] ...(1)
We need to find the maximum height
For maximum height, put dH/dt = 0
[tex]\dfrac{d(-16t^2 + 84t + 100)}{dt}=0\\\\-32t+84=0\\\\t=\dfrac{84}{32}\\\\t=2.625\ s[/tex]
Put t = 2.625 in equation (1)
[tex]H = -16(2.625)^2 + 84(2.625) + 100\\\\=210.25\ \text{units}[/tex]
Hence, the maximum height [tex]=210.25\ \text{units}[/tex]
Diagram 7 shows a regular hexagon UVWXYZ.
Diagram 7
Find the value of r.
.
A30°
B40°
С45°
D60°
Answer:
option d is the correct answer
Step-by-step explanation:
use formula for finding sum of all interior angles of regular polygon i.e. (n-2)×180 where n is no of sides of regular polygon then divide it by no. of sides of regular polygon to find measure of one angle of regular polygon and then subtract it from 180° to find the answer
IF ANYONE GETS THIS ILL GIVE A BRAINLIST JUST PLS EXPLAIN IT
[tex]\frac{n+1}{2}=-\frac{3}{4}[/tex]
Answer:
-5/2
Step-by-step explanation:
n +1/2 = -3/4
Cross Multiply
4n + 4 = -6
Then subtract 4 and put it on the other side
4n = -10
Now divide by 4 on both sides
n = -10/4
And finally, simplify
-10/4 = -5/2
Answer:
[tex]n = \frac{-5}{2}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define
[tex]\frac{n + 1}{2} = -\frac{3}{4}[/tex]
Step 2: Solve for n
Cross-multiply: [tex]4(n + 1) = -6[/tex]Divide 4 on both sides: [tex]n + 1 = \frac{-3}{2}[/tex]Subtract 1 on both sides: [tex]n = \frac{-5}{2}[/tex]nika is making cakes for a bake sale at school when she realizes she is running out of milk, each cake requires 1/4 cups of milk. nika has 3 3/4 cups of milk how many cups can she make
Answer:
Nika can make 15 cups of milk.
Step-by-step explanation:
To find how many cups she can make, we divide 3 3/4 by 1/4. First, we convert 3 3/4 to an improper fraction.
3 ¾ / ¼ Equation
15/4 / ¼ Convert to improper
15/4 * 4/1 Reverse sign & second fraction
= 60/4
= 15
Also, 15 * 1/4 = 3 ¾, so its correct!
How to multiply and divide fractions with a number beside them
Answer:
After making them the improper fractions the numerator is multiplied with the numerator and denominator is multiplied with the denominator .
Step-by-step explanation:
Suppose we have fractions
3 4/5 and 2 15/24
So we multiply the whole number with the denominator beside them and add to the numerator to make them an improper fraction.
These will become
19/5 * 63/24
= 19*63/ 5*24
= 1197/120
= 9 117/120
After making them the improper fractions the numerator is multiplied with the numerator and denominator is multiplied with the denominator .
The answer 1197/120 is divided ( 1197 is divided by 120) to get the mixed number back with a whole number and a fraction.
please help need soon please add step by step thank you
Answer:
x = 60
Step-by-step explanation:
The two angles shown here are known as corresponding angles. This means they both equal the same amount of degrees. Knowing this, we can set up an equation:
2x + 15 = 135
2x = 120
x = 60
Therefore, x = 60
You can check your answer by substituting the answer for x:
2(60) + 15 = 135
120 + 15 = 135
135 = 135
A book contains 120 pages and each page 35 lines how many pages will the book contains if every page has 24 lines
Answer:
If there will be 24 lines on all pages, there will be 175 pages in the book
Step-by-step explanation:
First we have to find out how much lines does the book have in total, so we multiply the number of pages by the number of lines on the page. So we get.....
120 x 35 = 4200
Now in order to find out how much pages will the book have when a page will have 14 lines we divide the number of lines by 24 and we get......
4200 / 24 = 175
Select the correct answer. Which is the simplified form of the expression ? A. B. C. D. here is a photo of it and 40 points and who ever gives me answer marked brainlyest
We are to simplify the expression given
The simplified form of the expression is option B. 67/10x + 9
Given:
= 3(7/5x + 4) - 2(3/2 - 5/4x)
= [tex] \frac{21}{5} x + 12 - \frac{6}{2} - \frac{10}{4} x[/tex]
= 21/5x + 12 - 6/2 + 10/4x
collect like terms
= 21/5x + 10/4x + 12 - 6/2
= (84x+50x)/20 + (24-6)/2
= 134/20x + 18/2
= 67/10x + 9
Read more:
https://brainly.com/question/1280754
Answer: 67/10x + 9 would be your answer.
PLease help me! its urgent due now
Select the correct answer. If the function 5x + y = 1 has the domain (-2, 1, 6), then what is the corresponding range? OA. {-9, 6, 31) log OB. {9, -6, -31} Oc. {-11, 4, 29) OD. {11,-4,-29}
Answer:
D) {11,-4,-29}
Step-by-step explanation:
rewrite the equation as y= -5x+1 and plug in -2,1 and 6 to get y
-5*-2+1=11
-5*1+1=-4
-5*6+1=-29
How many gallons of a 70% antifreeze solution must be mixed with gallons of 90% antifreeze to get a mixture that is 30% antifreeze? Use the six-step method.
Answer: Add 315 gallons of 70% antifreeze to 90 gallons of 25% antifreeze to make a 60% mixture.
You need to end up a mixture that is 60% antifreeze.
You have 90 gallons of 25% antifreeze, which means it has .25*90 = 22.5 gallons of pure antifreeze mixed with a solvent (probably water).
.
You will add 'x' gallons of 70% antifreeze to make the 60% mixture.
So, at the conclusion, you will have (90+x) gallons 60% 'pure' antifreeze. That can be shown with the equation:
.
.25*90 + .7*x = .6*(90+x)
.
Multiply by 100 to eliminate fractions.
.
25*90 + 70x = 60(90 +x)
.
2250 + 70x = 5400 + 60x
.
10x = 5400 -2250
.
10x = 3150
.
x = 315 gallons of 70% antifreeze.
.
How much will you end up having on hand?
90 + 315 = 405 gallons
.
If it is 60% antifreeze, how much 'pure' antifreeze will be in the mixture?
.6*405 = 243
.
In the original 90 gallons, you have 22.5 gallons of pure antifreeze.
In the additional 315 gallons, you have .7*315 = 220.5 gallons.
22.5+220.5 = 243 gallons
Step-by-step explanation:
Hope this helps,
Have a great day
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The relationship between each proportion of antifreeze can be used to form an equation.
The number of 90% antifreeze that must be added is 490 gallons.
The question is incomplete. So, I will use the following details to answer the question
[tex]Av ai la bl e = 70[/tex] gallons of 10% antifreeze
[tex]x \to[/tex] gallons of 90% antifreeze
[tex]Total = x + 70[/tex] --- after mixing the solution; to get a 80% solution
The equation is then represented as:
[tex]70 \times 10\% + x \times 90\% = (x + 70) \times 80\%[/tex]
[tex]7 + 0.9x = 0.8x + 56[/tex]
Collect like terms
[tex]0.9x - 0.8x = 56 - 7[/tex]
[tex]0.1x = 49[/tex]
Divide by 0.1
[tex]x = \frac{49}{0.1}[/tex]
[tex]x = 490[/tex]
Hence, 490 gallons of 90% antifreeze must be added.
Read more about equations at:
https://brainly.com/question/2264804
PLEASEEE HELPP!!! 15 PTS!!
Answer:
you are correct!!
Step-by-step explanation:
6x=180
x=30
Answer:
U ARE RIGHT X=30Step-by-step explanation:
look 4x+2x=180
6x=180
x=30
Have a wonderful day
ask me for further questions
What dos soy sux mean??
Answer:
Gay.
Step-by-step explanation:
I means gay, some people just refer to that but most commonly known as 'gay'.
the sum of 1 and y is greater than or equal to 3 .
Inequality Answer: 1 + y ≥ 3
I hope this helps, and Happy Holidays! :)
Find the length of the missing side. Round to the nearest hundredth.
Answer:
1. 7.07
2. 19.10
3.7.42
4. 67.27
5. 13.42
6. 21.8
7. 27.22
8.26.91
Step-by-step explanation: nope but hope it helps :)
The birth weight of the child is ___ kilograms. The child gains an average of ___ per month.
Answer:
3.5 kg, 0.5 kg
Step-by-step explanation:
The starting weight is represented by the y intercept, and the slope of the line is 0.5, so that's the average weight gain per month. Hope this helps!
Answer:
coordinated answer: (7,7)
please help I'm really confused
Answer:
your answer should look like this.
Step-by-step explanation:
The horizontal line goes through y-intercept -1/2
-1.2 is equal to or smaller than -0.8r
What is r bigger than
Answer:
whatever is higher than 1.5 is higher than r
Step-by-step explanation:
-1.2 ≤ -0.8r
-1.2/0.8 ≤ -0.8r/0.8
-1.5 ≤ -r
-1.5/-1 ≤ -r/-1
1.5 ≥ r
1.5 is equal to or bigger than r
Answer: -0.8r is bigger
Step-by-step explanation: