64 sea stars in the aquarium.
What is Ratio?Ratio is defined as a relationship between two quantities, it is expressed one divided by the other.
Ratio of see stars to eels = S : E = 4:5
E = 5/4(S)
Ratio of rockfish to sea strars = R : S = 5:8
R = 5/8(S)
E = R + 40
5/4(S) = 5/8(S) + 40
Multiply by 8 both the sides
10S = 5S + 320
5S = 320
S = 320/5
S = 64
Hence, 64 sea stars in the aquarium
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1. to replace a variable in a mathematical expression with an actual value
variable
2. a value of the variable that makes an algebraic sentence true
solution
3. a system for simplifying expressions that ensures that there is only one right answer
order of operations
4. a letter used to represent an unknown number or quantity
equation
5. a mathematical statement that shows two expressions are equal using an equal sign
substitute
Answer:
what is the question so i can help you, i'm confused
Collin needs to fix his broken air conditioner unit. He decides to call some mechanics to see what it might cost to get the unit repaired. Let’s x represent the number of hours and let y represent the total cost.
Company A: y = 25x + 20
company B: y = 20 + 45
it will take ____________ hours for the cost to be the same for both companies
5 hours if there was supposed to be an x after 20 on the second equation
It will take 5 hours for the cost to be the same for both companies.
What is an equation?Two algebraic expressions having the same value and symbol '=' in between are called an equation.
Collin needs to repair his malfunctioning air conditioner.
He makes the decision to phone a few technicians to find out how much it would cost to fix the device.
Let x stand for the number of hours and y for the overall expense.
Company A: y = 25x + 20
company B: y = 20x + 45
To find the number of hours it will take for the cost to be the same for both companies, we need to solve the equation:
25x + 20 = 20x + 45
Simplifying the equation, we get:
5x = 25
x = 5
Therefore, x = 5
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The complete question:
Collin needs to fix his broken air conditioner unit. He decides to call some mechanics to see what it might cost to get the unit repaired. Let’s x represent the number of hours and let y represent the total cost.
Company A: y = 25x + 20
company B: y = 20x + 45
it will take ____________ hours for the cost to be the same for both companies
What is the value of y in the triangle?
Enter your answer in the box. Round your final answer to the nearest hundredth.
y =
ft
A right triangle. The hypotenuse is labeled as 15 feet. The perpendicular is labeled as y. The alternate base angles are labeled as right angle and 26.5 degrees, respectively.
The perimeter of a square is 100 feet. What is the length of one of its sides? Explain your work.
Answer:
25
Step-by-step explanation:
to find the perimeter you add up all the sides and since it's a square and squares have all four equal sides
you just divide 100/4=25
4 sides of a square. Each side of a square is equal. You said the perimeter is 100. So if we put it in an equation, lets say S = Side. 4s=100. Now we just divide. s=25
Each side is 25
Thank or brainliest if helpful :D
Click on the image above^
Answer:
x = [tex]\sqrt{34}[/tex] or 5.83
Step-by-step explanation:
A² + B² = C²
3² + 5² = x²
9 + 25 = x²
34 = x²
[tex]\sqrt{34}[/tex] = x
or
5.83 = x
Hope this helps!
PLS HELP :(
At the Manchester Ice Cream Parlor, one group of friends ordered 1 small serving of ice cream and 1 large serving of ice cream for $5. Another group of friends ordered 4 small servings of ice cream and 5 large servings of ice cream for $24. How much does the ice cream cost?
The ice cream costs $__ for a small serving and $__ for a large serving.`
Answer:
$24
Step-by-step explanation:
5 large servings = 4 + 4 + 4 + 4 + 4 = $20
4 small servings = 1 + 1 + 1 + 1 = $4
20 + 4 = $24
The ice cream costs $1 for a small serving and $4 for a large serving.
~ LadyBrain
A school chorus has 90 sixth-grade students and 75 seventh-grade students. The music director wants to make groups of performers, with the same combination of sixth- and seventh-grade students in each group. She wants to form as many groups as possible. What is the largest number of groups that could be formed?
Answer:
The music director can make 15 groups of performers with 6 sixth grade students and 5 seventh grade students in each group.
Step-by-step explanation:
hey dale plzzzz helppp
Answer:
Step-by-step explanation:
To find the mean absolute deviation of the data, start by finding the mean of the data set. Find the sum of the data values, and divide the sum by the number of data values. Find the absolute value of the difference between each data value and the mean: |data value – mean|.
12+ 12+ 14+ 16+17+18+18= 123
hold up one
answer asap please and thank you look at the image
Answer:
4x=36
Step-by-step explanation:
4x=36
x=36/4
x=9
Other equation
36/4=x
Answer this question please :)
Answer:
Step-by-step explanation:
9*7=63
63
triangle area=21
63+21=84
Answer:
Its 63
Step-by-step explanation:
Area is founded by multiplying the width and height. Therefore, 9 * 7 is 63. Thus is ur answer.
easy math please help i'll mark brainliest
Answer:
D, D, A, C
Step-by-step explanation:
Congruent means equal.
T and r are alternate angles
Vertically opposite angles are equal
Y is 47 degrees because since the full angle is 90 degrees, subtract:
90-43 = 47
Hope this helps :)
-jp524
Please help me! Will give Brainliest!!
Answer:
18 units
Step-by-step explanation:
Answer:
18 units that is the answer. :)
PLZ HELP 30 PTS ANSWER FAST AND I GIVE BRAINLIEST AND 5 STARS TO THE PEOPLE WHO DON'T GET BRAINLIEST!!!!!
Mr. Jacobs is going to make a histogram of the test scores from the last math test he gave. He plans to first organize the data into a stem-and-leaf plot and then make the histogram from the stem-and-leaf plot. The test scores are listed below.
79, 82, 65, 61, 94, 97, 84, 77, 89, 91, 90, 83, 99, 71, 68, 77, 87, 85
Which of the following histograms represents this data?
Answer:
4
Step-by-step explanation:
The voltage in a flashlight bulb is 6.0 volts and has a resistance of 24 ohms. Calculate the current explain you answer
Answer:
Step-by-step explanation:
Answer:
0.25 amps
Step-by-step explanation:
VOLTAGE = CURRENT * RESISTANCE or V=IR
Voltage / Resistance = 0.25 amps
Answer questions #13 & 14. Number 13: What is the system shown? Number 14: Type the correct answer in the box. THE IMAGE BELOW SHOWS BOTH QUESTIONS.
Answer:
124
Step-by-step explanation:
248)
What is the area of the shaded region? Use 3.14 for pi.
Answer:
= 50.24
Step-by-step explanation:
the small circle is 28.26 and the big circle is 70.5 so 78.5 - 28.26 = 50.24
Write an equation for the relationship between the number of cups of blue paint, x, and the number of cups of red paint, y in the table in #3.
Hint: Use the formula y = kx
Answer:
Step-by-step explanation:
A certain shade of pink is created by adding 3 cups of red paint to 7 cups of white paint.
hi i dont get this please help me!!! :( and answer both of them please!
Answer to the Trapezoid Question:
A=88.2
Step-by-step explanation:
the formula you use to find the area of a trapezoid is
A= ((a+b)/2)h
a+b are the bases added together
The bases are the top, and the bottom of the trapezoid
the height is the dotted line, the height of the trapezoid
Answer to the net question:
surface area = 124 square feet
Step-by-step explanation:
to find the area of a square you multiply the two sides such as 8 times 5
so do that for all of the squares in the net and add them together
its a net so most of the sides are the same length, imagine putting it into a rectangular prism if you're not sure what the side is
Questions on file. Pls halp
[tex] \large{ \tt{❋ \: EXPLANATION}} : [/tex]
The formula to find out the volume of a rectangular prism is V = l × b × h where V is the volume , l = length , b = breadth & h = height.We're provided the figure of trapezium in the second attachment. The formula to fInd out the area of trapezium is A = [tex] \tt{ \frac{1}{2} h(a + b)}[/tex] where a and b are the opposite parallel sides and h be the height of a trapezium.[tex] \large{ \tt{❃ \: SOLUTION}} : [/tex]
In the first picture , we're provided - Length ( l ) = [tex] \frac{7}{4} [/tex] cm , breadth ( b ) = [tex] \frac{3}{2} [/tex] cm and height ( h ) = [tex] \frac{1}{2} [/tex] cm. Now, plug these known values and them find out the volume of given rectangular prism.[tex] \large{ \tt{❁ \: VOLUME \: OF \: RECTANGULAR \: PRISM \: ( \: V \: ) = l \times b \times h}}[/tex]
[tex] \large{ {⟶ \: \frac{7}{4} \times \frac{3}{2} \times \frac{1}{2} }}[/tex]
To multiply one fraction by another , multiply the numerators for the numerator and multiply the denominator for its denominator and reduce the fraction obtained after multiplication into lowest term if possible.[tex] \large{ ⟶ \frac{7 \times 3 \times 1}{4 \times 2 \times 2} }[/tex]
[tex] \large{⟶ \frac{21}{16} \tt{ {cm}^{3} }}[/tex]
Hence , the volume is [tex] \boxed{ \frac{21}{16} }[/tex] cubic centimetres.--------------------------------
In the second attachment , we're provided - 6ft and 7 ft are the opposite parallel sides and 3 ft is the height of the given trapezium.[tex] \large{ \tt{✺ \: AREA \: OF \: A \: TRAPEZIUM = \frac{1}{2} h(a + b)}}[/tex]
[tex] \large{ ⟶ \frac{1}{2} \times 3(6 + 7)}[/tex]
[tex] \large{⟶ \: \frac{1}{2} \times 3 \times 13 }[/tex]
[tex] \large{⟶ \frac{39}{2} \tt{cm}^{2} }[/tex]
Hence , The area of trapezium is [tex] \boxed{ \frac{39}{2} \tt{cm}^{2} }[/tex]And we're done ! ♪
[tex] \large{ \# \: \mathfrak{StayInAndExplore \:☂ }}[/tex]
▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
Answer:
1)
V = l * w * h
7/4 * 3/2 * 1/2 = 21/16 cm^3
2)
A = a+b ÷ 2 * h
6 + 4 = 10 ÷ 2 = 5
5 * 3 = 15 ft^2
Valentino needs 4 1/2 pounds of chicken for a recipe. He already has
2 3/4 pounds of chicken. How many more pounds of chicken does Valentino need?
Answer:
Valentino needs 1 [tex]\frac{3}{4}[/tex] more pounds of chicken for the recipe.
Step-by-step explanation:
You just need to know how to subtract fractions.
Valentino needs 4 and 1/2 pounds of chicken for a recipe, and he already has 2 and 3/4. We want to know how many more pounds of chicken we need, so you subtract.
4 1/2 - 2 3/4 = 4 2/4 - 2 3/4
= 1 3/4
Valentino needs 1 and 3/4 pounds of chicken still.
Answer:
c
Step-by-step explanation:
Jezebel took a train to visit her uncle. The train traveled at a constant speed of 40 miles per hour. Complete the table. Then, write an equation to find the total distance d traveled after t hours.
Answer:
[see below]
Step-by-step explanation:
We can tell that for every hour passed the distance traveled by the train would increase by 40 miles.
We can use the equation d = 40t to determine the values of the table. The 'd' is total distance and 't' is the number of given hours.
Two hours:
d = 40(2)
d = 80
Three Hours:
d = 40(3)
d = 120
Four Hours:
d = 40(4)
d = 160
Hope this helps.
The ratio 3:5 can also be used to describe a relationship between the animals
in the field on Monday. What relationship could this ratio describe? Show or
explain how you got your answer.
Enter your answer and your work or explanation in the space provided.
(The ratio for the animals on Monday was 18:12)
Answer:
18/12
Step-by-step explanation:
Which of the expressions below are equivalent to 0.5( 4x + 12)
A. 8x
B. 2x + 6
C.16x
D. 4x
If n(p)=20, n(Q)=30 and n (PUQ)=40
then
Draw a veen diagram of the above information.
help i'll mark brainliest thank you
Answer:
Q1: B
Q2: D
Q3: B
Q3: C
explanation:
Answer:
Q1 : D = 4.5
Q2: A and C = 22/7 and 3. 14
Q3: C = 36
Q4: B = 28.5
Step-by-step explanation:
plz mark brainliest :)
Penny has jogged a total of 15 miles this week, which is 4 miles further than last week. How many miles (m) did she jog last week?
Choose the equation that correctly models this situation.
1) 15m = 4m
2) m + 4 = 15
3) 15m + m = 4
4) m divided by 4 = 15
Answer:
answer is number 2
hope this helps:)
Answer:
lo mas lógico es que es:
2) 11m + 4 = 15m.
What are the vertices of the resulting image A’B’C’D’E after rotating the figure 90 degrees about the origin?
Answer:
45
Step-by-step explanation:
Solve the system of equations below by elimination. Write your answer as an ordered pair. e.g. (2,3)
Answer:
(45,35)
Step-by-step explanation:
1 - Stack the equations on top of each other
3x - 4y = -5
4x + 4y = 40
2 - We can eliminate by subtracting the bottom equation from the top equation
3x - 4y = -5
- 4x - 4y = 40
3 - The y's cancel out, leaving us with...
3x = -5
- 4x = 40
4 - Continue simplifying
-1x = -45
5 - We can switch the -1x with -x to make things simple
-x = -45
6 - Positize (make it positive) the statement
x = 45
7 - Halfway there! Substitute the x value into one of the equations
(3 * 45) - 4y = -5
8 - Solve
135 - 4y = -5
Minus 135 on both sides
-4y = -140
Divide by -4 on both sides
y = 35
9 - Here is your answer!!
x = 45
y = 35
(45,35)
2 __ a solution of 4 = k/4
is it or is it not
[tex]k = 16[/tex]
Step-by-step explanation:Question[tex]4 = \frac{k}{4} [/tex]
First, make k as the Subject
[tex]4 \times 4 = k[/tex]
Now simply Solve it
[tex]k = 16[/tex]
Hope this helps you.
Have a nice day!
Good luck on your Assignment!!
How many terms are in each factor of the expression 9(7 + 2x)?
Answer:
2 terms i believe if i am wrong i apologize
Step-by-step explanation:
.
