Answers
Answer:
Average age of 6 boys is 12 years. The average age of 4 other boys is 18 years. Find the average age of all 10 boys.
A
12 years
Step-by-step explanation:
Related Questions
What is 3x+8 ?
I believe you simplify.
Answers
Step-by-step explanation:
Simplifying x = 3x + -8 Reorder the terms: x = -8 + 3x Solving x = -8 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. x + -3x = -8 + 3x + -3x Combine like terms: x + -3x = -2x -2x = -8 + 3x + -3x Combine like terms: 3x + -3x = 0 -2x = -8 + 0 -2x = -8 Divide each side by '-2'. x = 4 Simplifying x = 4
3
x
+
8
4/9 kilogram of baking soda costs $2. How much does 1 kilogram of baking soda cost?
please drop an explanation, and equation thanks!
Answers
To do this you know 4/9=2$ so now you want to know 1=x$
When you do this you get $5
Answer:
1 kg of baking soda costs $4.50.
Step-by-step explanation:
Write and solve an equation of ratios, as follows:
4/9 kg $2
------------- = --------------
1 kg x
Multiplying both numerators by 9, we get:
4 kg $18
------------ = ---------
1 kg x
Cross-multiplying, we get 4x kg = $18-kg. Solving for x, we get:
$18-kg
x = -------------- = $4.50
4kg
1 kg of baking soda costs $4.50.
A cylinder has a volume of 24 cubic feet. Which of the following could have the same radius and height as the cylinder?
A. A cone with a volume of 72 cubic feet
B. A cone with a volume of 32 cubic feet
C. A sphere with a volume of 18 cubic feet
D. A cone with a volume of 8 cubic feet
Answers
The taillight of a car is in the shape of a kite whose diagonals are both 15 centimeters. How many square centimeters does the kite occupy?
30
56.25
112.5
225
Answers
Have a great day!!
Simplify −3√27−2√2−3√45−√18 Work Needed
Answers
Answer:
Step-by-step explanation:
27 = 3 * 3 * 3
-3√27 = -3*3√3 = -9√3
Index of the radical is 2. So, after prime factoring, for each two of same number, pull one outside.
-3√45= -3√3*3*5 = -3*3√5 = -9√5
-√18 = -√2*3*3 = -3√2
-3√27 - 2√2 - 3√45 - √18 = -9√3 - 2√2 -9√5 -3√2
Now combine like terms
= -9√3 - 9√5 -2√2 - 3√2
= -9√3 - 9√5 - 5√2
Answer:
-9√3 - 5√2 - 9√5
Step-by-step explanation:
-3√27 = -3√9x3 = -3x3√3 = -9√3
2√2 = 2√2
3√45 = 3√9x5 = 3x3√5 = 9√5
√18 = √9x2 = 3√2
-9√3 - 2√2 - 9√5 - 3√2 = -9√3 - 5√2 - 9√5
HELP QUICK!
...........................
Find x.
Answers
Answer:
i think its 2 ft i’m not sure tho
Step-by-step explanation:
Answer:
The answer is 1.75.
Step-by-step explanation:
Since 3 is 1/4 of 12, you have to divide 7 by 4 to get your answer. Hope this helps
need help with this one question
Answers
Answer:
71.6599
Step-by-step explanation:
I think if I’m wrong please tell me
wich ik I’m probably wrong
A 6-sided number cube is rolled 120 times and 4 is rolled 23 times. Based on the data, what is the best estimate of the probability that the next roll will be a 4?
A. 1/6
B. 1/3
C. 1/4
D. 1/2
Answers
Explaination: I’ll try my best, let’s round 23 to 20. If we divide 120 by 20, we will get six. 1/6.
Please help me!!!
At midnight, the temperature in a city was 5 degrees Celsius. The temperature was dropping at a steady rate of 2 degrees Celsius per hour.
Write an inequality that represents t, the number of hours past midnight, when the temperature was colder than -4 degrees Celsius. Explain or show your reasoning.
2.
Tyler is simplifying the expression 6−2x+5+4x.
Here is his work:
6−2x+5+4x
(6−2)x+(5+4)x
4x+9x
13x
His work is incorrect. Explain the error he made.
3.
Simplify the expression 6−2x+5+4x. Hint: Your final expression shoul donly have two terms.
4.
Factor to write an equivalent expression:
36a−16
5.
Expand to write an equivalent expression:
−14(−8x+12y)
6.Diego's family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel is 1.5 gallons or less.
Starting from a full tank, can Diego's family drive the car for 14 days without the warning light come on?
Please help me thank you
Answers
Answer:
I dont really know the answer
Step-by-step explanation:
I dont know
did you figure it out?
Ok so I have been trying to figure this answer out but I CANT SO PLZZZZZ HELP AND NO LINKS!!!
Graph the following inequalities on a number line.
X ≥ -4
Answers
Closed circle is greater/less than or equal then the line shows if x could be doing higher or lower number
no one get the answer right so i will repost this again
Answers
Answer: the rectangle is 5 and the other one is i think 135
Step-by-step explanation:
Alex is setting up an in-line skating course 21 feet long to practice weaving around cones. He wants a cone every 3 1/2 feet. How many cones does he need?
Answers
Answer:
I think it is 6 cones
Step-by-step explanation:
21 ÷ 3.5 = 6
what is 3/10x 5/7
a.15/70
b.20/70
c.8/17
d.15/17
Answers
Answer:
Option A is your answer ☺️☺️☺️
If x is 100, what is the area of the cell phone's range?
BTW, it is in feet.
Answers
3.1415926535897932384626433
i need help pls help me
Answers
Answer:
the answer for a is t-10p= x
Step-by-step explanation:
t= tomatoes
p= pounds
x= leftover amount of tomatoes.
x, y
ethan amt, zachary amt
2.5, 10, x, y
2.5
10
How are convection currents in the mantle (geosphere) and in the oceans (hydrosphere) similar? Or how are they different. Explain one of the two or how their similar and different. Thanks :)
I give brainliest to whichever makes the most sense
Answers
Answer:
They are different because in the mantle, the magma is heated, it becomes less dense and rises. It give off it's thermal energy and cools down, becoming more dense and descend to be heated again.
In the ocean, the tropics warm the water and it travels to the poles to cool down, then returns to the tropics to heat up again.
different because
How can I add ¾? Explain.
Answers
Answer:
Step-by-step explanation:
you can do many things to add 3/4, most common way si thinking of 3/4 3 quarters of your number
you can add 3/4 to 1 which is 1 3/4
1+3/4=1 3/4
or,
you could do
3/4 OF 10 is 3 quarters of 10 which is 2.5x3 or 10 -2.5 which equals,
7.5
Answer:
You can add 3/4 by adding as a decimal so 3/4 of 100 is 75 so it would be .75
Step-by-step explanation:
Plz help: what is the probability?
Rolling a number that is less than three 5 times in a row on a number cube labeled 1 through 6
Answers
Answer:
whats the options
Answer:
well to me it would be a half and half deal so you might and you might not..
Step-by-step explanation:
3x + 2 = -55 i need all the steps
Answers
Answer:
-19
Step-by-step explanation:
3x+2 = -55
-2 -2
3x = -55-2
3x = -55+-2
3x = -57
/3 /3
x=-19
Answer:
-19
Step-by-step explanation:
[tex]3x + 2 = -55[/tex]
[tex]3x = -55[/tex]
[tex]-2[/tex] (2 is negative because it was moved to the other side of the equation)
[tex]3x/3 = -57/3[/tex] (Divide both sides of the equation by 3 to isolate x.)
[tex]x = -19[/tex]
can somebody please help me and explain a little bit? :(
Answers
Arrange in lowest to highest
1, 2, 3, 3, 4, 6, 7, 8
Cross out numbers until you reach the middle two
3 and 4, what’s between them?
Solution: 3.5
For this set of numbers, the median would either be 7 or 1 because the set of numbers is uneven
In a seventh-grade class of 28 students, there are 16 girls and 12 boys. If one student is randomly chosen to win a prize, what is the probability that a girl is chosen?
Answers
Answer:
65/100
Step-by-step explanation:
The table below gives the price for different numbers of burgers. Do the numbers in the table represent a proportional relationship?
Answers
18/6=21/7=24/8=27/9= 3
Pepino’s pizza charges $8 for medium pizza plus $2 for each topping. How many toppings are on a medium pizza that costs $20?
Answers
Answer:
6 toppings
Step-by-step explanation:
Find how much the toppings cost in total without the medium pizza.
20 - 8 = 12
12 ÷ 2 = 6 toppings
I DONNT UNDDERSTAND THIS AT ALL
Answers
Answer:
Here's exactly what I would write:
a = Sandy cupcakes, b= Sandy gummy bears, c = Sandy brownies, d = Nina cupcakes, e = Nina gummy bears, f = Nina brownies
a = 4d
b = 3e
c = 2f
Expression for Sandy: 4d + 3e + 2f
Expression for Sandy and Nina: 5d + 4e + 2f
Step-by-step explanation:
This is a terrible question that makes people feel frustrated. I'm sorry.
a = Sandy cupcakes, b= Sandy gummy bears, c = Sandy brownies,
d = Nina cupcakes, e = Nina gummy bears, f = Nina brownies
Sandy has 4 times the number of cupcakes as Nina: a = 4d
Sandy has 3 times the number of gummy bears as Nina: b = 3e
Sandy has 2 times the number of brownies as Nina: c = 2f
An expression for how many desserts Sandy is bringing: a + b + c
An expression that could be used for how many desserts Sandy and Nina are bringing together: a + b + c + d + e + f, but I think they want you to substitute the equivalent values like above (a = 4d)
Sandy: 4d + 3e + 2f
Sandy and Nina: 5d + 4e + 2f
because 4d + 3e + 2f + d + e + f = 5d + 4e + 2f
I'm sorry I don't have a simpler way to explain this. It's a painful question. I will answer any questions you have.
tysm 30 points!! pls answer correctly
Answers
Answer:
The answer is 4 trust me i'm in high school.
Step-by-step explanation:
Plzz mark brainliest
what is the value of x
Answers
Answer:
x = 105
Step-by-step explanation:
Skills needed: Triangle Angle Measures, Solving a One-Variable Equation
1) To get the answer, you need to know that all the angles inside a triangle add up to 180 degrees. This is very important in the future as well.
2) So to find x, we can make the equation: x + 30 + 45 = 180
3) You can combine like terms:
30 and 45 can be combined --> 30 + 45 = 75
4) Based on step 3, you can get: x + 75 = 180
Subtract 75 from both sides, and you will get: x = 105
Hope this helps and have a nice day! :] :) :D
An octagon has an area of 55.3 square inches. It is a smaller version of an octagon whose dimensions are 7 times larger. What is the area of the larger octagon?
Answers
9514 1404 393
Answer:
2709.7 square inches
Step-by-step explanation:
If the linear dimensions are a factor of 7 larger, then the area is a factor of 7^2 = 49 larger.
larger area = 49(55.3 in^2) = 2709.7 in^2
What is 2+4+6-9+17-4=x
Answers
Answer:
x = 16 or 16 = x
Step-by-step explanation:
2+4+6-9+17-4=x
6+6-9+17-4=x
12+17-9-4=x
29-9-4=x
20-4=x
16=x
Answer:
[tex]x = 16[/tex]
Step-by-step explanation:
[tex]2 + 4 + 6 = 12[/tex]
[tex]12 - 9 = 3[/tex]
[tex]3 + 17 = 20[/tex]
[tex]20 - 4 = 16[/tex]
4. What is the area of the composite shape below?
do it step by step
Answers
Answer:
A=(L×W)
=10ft×8ft=80ft²
Step-by-step explanation:
I hope it helped. I think this is the answer.
a=(l)(w)
half-circle
a=(3.14)(4^2)
a=50.24
50.24/2 (because it half circle)
25.12
rectangle
a=(10)(8)
a=80
total area
80+25.12=105.12
105.12
2 glasses of milk and 3 snack bars have a total of 73 carbohydrates (carbs), and 4 glasses of milk and 2 snack bars have a total of 86 carbs. Determine how many carbs are in one glass of milk and in one snack bar.
There are ___ carbs in one glass of milk.
Answers
Answer:
There are 14 Carbs in 1 glass of milk.