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Work Shown
45 girls : 15 boys
45/15 girls : 15/15 boys .... divide both parts by 15
3 girls : 1 boy
This tells us there are three times as many girls as there are boys.
We write this as the ratio 3 : 1. The order of the terms is important. We cannot say 1:3 since that would imply there are more boys than girls, but it's the other way around.
if x and y varies directly as each other and x = 4 when y = 16. find y when x = 9
-6.2f + 2.9f - 22 - 4= __ f -26
Answer:
-3.3f
Step-by-step explanation:
-22+-4=-26, that's why there is -26 at the end.
-6.2f+2.9f=-3.3f
-3.3f-26
Hope it helped!
Please give brainliest, thank me and rate it 5. :)
David and Denise share n pears in the ratio 4:9. If n = 39 how many pears does David have?
Answer:
David has 12 pears.
Step-by-step explanation:
4 + 9 = 13
39 / 13 = 3
3 x 4 = 12
3 x 9 = 27
In ΔWXY, if m∠W is five less than three times m∠Y and m∠X is 8 more than m∠W, find the measures of each angles?
Answer:
∡W = 73°
∡X = 81°
∡Y = 26°
Step-by-step explanation:
let 'y' = measure angle Y
let '3y - 5' = measure of angle W
let '3y + 3' = measure of angle X
add all together and set equal to 180
y + 3y + 3y - 2 = 180
7y = 182
y = 26
substitute 26 for y in '3y+3' to find measure of angle X
substitute 26 for y in '3y-5' to find measure of angle W
[tex]1 \times \frac{1}{4} - \frac{3}{20} (4 \times \frac{1}{3} - 2 \times \frac{1}{2} ) \times 5[/tex]
Answer:
[tex]1 \times \frac{1}{4} - \frac{3}{20} (4 \times \frac{1}{3} - 2 \times \frac{1}{2} ) \times 5 \\ \frac{1}{4} - \frac{3}{4}( \frac{4}{3} - 1) \\ \frac{1}{4}- \frac{3}{4} ( \frac{1}{3} ) \\ \frac{1}{4} - \frac{1}{4} \\ \boxed{0}[/tex]
0 is the right answer.You are testing two scales for accuracy by weighing two different objects. Use the drop-down menus to complete the statements about the scales' accuracy.
Answer:
Because the object on scale 1 weighs more than the object on scale 2, each pound of error results in a lesser percent error. Scale 1 was 10 pounds off and scale 2 was 3 pounds off, so scale 1 was 10% off and scale 2 was 12% off.
The object on scale 1 weighs 100 pounds and the object on scale 2 weighs 25 pounds so the object on scale 1 weighs more than scale 2.
Scale 1 error margin: Scale 2 error margin:
= Actual weight - measured weight = 25 - 22
= 100 - 90 = 3 pounds
= 10 pounds
Scale 1 error percentage: Scale 2 error percentage:
= Error margin/ Actual weight = 3/25
= 10/100 = 12%
= 10%
Scale 1 object has less percent error.
Answer:
Fill in Blanks in Caps and Numbers are in ()
Because the object on scale 1 weighs (MORE) than the object on scale 2, each pound of error results in a (LESSER) percent error. Scale 1 was (10) pounds off and scale 2 was (3) pounds off, so scale 1 was (10)% off and scale 2 was (12)% off
Step-by-step explanation:
I got it right on TTM so trustt me ;)
Drag each graph to show if the system of linear equations it represents will have no
solutions, one solution, or infinitely many solutions.
please help i will mark brainliest if correct
Answer: X=86
Step-by-step explanation: do 47+47=94 94-180=x
180= sum of all angles in a triangle btw hopr this helps
A verbal description of a function is given.
Let V(d) be the volume of a sphere of diameter d. To find the volume, take the cube of the diameter, then multiply by r and divide by 6.
(a) Find an algebraic representation for the function.
V(d) =
Answer:
be the volume of a sphere of diameter d. To find the volume, take the cube of the diameter, then multiply by $$\pi$$ and divide by 6. - Slader.
the sum of k and 141
Answer:
k + 141
Step-by-step explanation:
the sum means addition .
hope this helps !
ax+3x=bx+5 please solve for X
Answer:
x = 5 / (a+b+3)
Step-by-step explanation:
ax+3x=bx+5
x = 5 / (a+b+3)
Solve for x
-30 = 5(x + 1)
=
6x + 4 = 5x+17 + 120
need this answerd ASAP pls! thank u!
Answer:
x = 133
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of EqualityAlgebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
6x + 4 = 5x + 17 + 120
Step 2: Solve for x
Combine like terms: 6x + 4 = 5x + 137Isolate x terms: x + 4 = 137Isolate x: x = 133Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: 6(133) + 4 = 5(133) + 17 + 120Multiply: 798 + 4 = 665 + 17 + 120Add: 802 = 682 + 120Add: 802 = 802Here we see that 802 does indeed equal 802.
∴ x = 133 is the solution to the equation.
Colin was thinking of a number. Colin doubles it, then adds 9 to get an answer of 95.4. What
was the original number?
Answer:
43.2
Step-by-step explanation:
Set up an equation to model the situation;
2x + 9 = 95.4
"x" represents the unknown number. 2x is present because the number is double. 9 is added because the problem says that Colin added 9. This is set equal to 95.4, because the result attained is 95.4.
Solve the equation using inverse operations;
2x + 9 = 95.4
-9 -9
2x = 86.4
/2 /2
x = 43.2
help help help ( I WILL MARK YOU AS BRAINLIEST )
Is ✓ 2 a rational or irrational?
Answer:
[tex]\sqrt{2}[/tex] is a irrational number
Carlos is five years older than twice his sister's age. Carlos is 13. Which equation and solution correctly identifies his sister's age?
2x - 5 = 13; x = 9
2x + 5 = 13; x = 4
2x - 5 = 13; x = 4
2x + 5 = 13; x = 9
Answer:
B
Step-by-step explanation:
x=4 so
2x4=8
8+5=13
Carlos's sister is 4 years old, therefore it is B.
Answer:
B
Step-by-step explanation:
Solve the system by graphing and find the number of each item Abbie purchased
Answer:
instructions unclear
Step-by-step explanation:
Katherine earned $105.00 at her job when she worked for 7 hours. How much money did she make earn each hour?
will mark brainliest
solve the equation and give the x and y variables. Show your work
3x + 3y = 9
5x + 4y = 10
Answer:x = y = 3 x + 3 y = 9 = 5 x + 4 y = 10 =
Step-by-step explanation:
One student did an experiment of the rock cycle. The steps of the expirement are shown below what does the students experiment most likely demonstrate about the rock cycle
The given question is incomplete. The complete question is :
One student did an experiment on the rock cycle.
The steps of the experiment are shown below.
Collect five pieces of wax of different colors.
Use a plastic knife to scrape off thin shavings of the pieces of wax.
Pile the wax shavings of different colors one over the other.
Hold the pile of wax shavings in the palm and squeeze it for two to three minutes. Fold the pile and squeeze it in the palm again for a minute.
What does the student's experiment most likely demonstrate about the rock cycle?
a. Weathering can change igneous rocks into sediments.
b. Weathering can change metamorphic rocks into sediments.
c. Heat and pressure can change igneous rocks into metamorphic rocks.
d. Heat and pressure can change sedimentary rocks into metamorphic rocks.
Answer: Option D
Explanation: The rock cycle defines the conversion or transformation of igneous rock into sedimentary rocks and sedimentary rocks into metamorphic rocks. The conversion of rocks into these three forms is continuous.
The igneous rocks on weathering forms sediments which on cementation and compaction gets converted into sedimentary rocks. Then sedimentary rocks under tremendous heat and pressure gets converted into metamorphic rocks.
These processes takes millions of years to gets converted from one rock form to another.
Here, in the experiment wax shavings of different colors one upon another shows that they are sedimentary rocks and pressing it between palm or hand shows that heat and pressure is applied on it. This shows the conversion of sedimentary rocks into metamorphic rocks.
A ___________ is used to change from one unit to another.
CHOOSE, see the attachment
Help me PLZZ.
It's urgent.
Answer:
f)-2
thats the right answer
I am sure
hope it helps
A company offers a renters insurance policy that costs a customer $70 per year, and the company will
make a payout of $10,000 to the customer if they are victim to theft in that year. The company set this
price based on the probability of a theft in the area being 0.002. Let X represent the company's profit
from one of these policies. The table below displays the probability distribution and summary statistics for
X
Theft
No theft
X = profit ($) 70
P(X)
0.998
-9,930
0.002
Mean:
Hex = $50
Ox $447
Standard deviation:
The company is considering increasing the price of this policy by an additional $10. Let Y represent their
profit from one of these higher-priced policies.
What are the mean and standard deviation of Y?
Lly =
dollars
or
dollars
Answer:
My= 60
Oy=447
Step-by-step explanation:
Answer: μY = 60 dollars
σY ≈ 447 dollars
Step-by-step explanation:
PLEASEEEEEEE HELP ASAP!!
the relationship between the number of cup of flower, f and the number of cups of milk, m ,used in a cake recipe can be modeled as an equation f=1/4 m. How many cups of flower should be used for 2 cups of milk? answer as a fraction only
Answer:
Hi... U should do like this
What is the sum of angles in a triangle and circle
The sun of the 3 inside angles of a triangle = 180 degrees.
A circle = 360 degrees.
The sum of both would be 180 + 360 = 540 degrees.
Answer:
3 angles in a triangle add up to 180
And 360 in a circle
can someone help me please?
Answer:
90.6
Step-by-step explanation:
89.7 + 92.6 + 83.9 + 96.2=
362.4
362.4 divided by 4 =
90.6
A team spent 20 minutes on passing drills and 40 minutes on shooting drills.
What is the ratio of time spent on shooting drills to time spent on passing drills?
1 to 3
3 to 1
2 to 1
1 to 2
Paul's Pizzeria sells 45 cheese pizzas and 20 pepperoni pizzas each week.
What is the ratio of cheese pizzas to pepperoni pizzas sold each week by Paul's Pizzeria?
4:2
3:1
9:4
9:2
Which simplified ratio correctly compares 12 yards to 20 feet?
3:5
5:3
5:9
9:5
Answer:
3 to 1
Step-by-step explanation:
its
I'm sorry if this is confusing but I really need the help...
45x^6y^-5 / 3x^4y^2 x 5x^-4y^-6
Answer:
I hope I got it correct
Step-by-step explanation:
Help me please I really need it