Answer:
x = [tex]\frac{1}{5}[/tex]
Step-by-step explanation:
[tex]\frac{1}{x}[/tex] = 5 ( multiply both sides by x to clear the fraction )
1 = 5x ( divide both sides by 5 )
[tex]\frac{1}{5}[/tex] = x
A father is twice as old as his son and the sum of their ages is 75. How old is the
father?
Answer: 50
Let's first of all assume the son's age as x.
So,
Father's age will be 2x i.e. twice as old as the son
Given that,
Sum of their ages = 75 years
So,
x + 2x = 75
3x = 75
x = 75/3
x = 25
Hence,
Son's age = x = 25 years
Father's age = 2x = 2 * 25 = 50 years
2(5x - 7) = 8x + 15
one solution
b
no solution
c
infinite many solutions
[tex] \sf \: 2(5x - 7) = 8x + 15[/tex]
[tex] \: \: [/tex]
[tex] \sf 10x - 14 = 8x + 15[/tex]
[tex] \: \: [/tex]
[tex] \sf \: 10x - 8x = 15 + 7[/tex]
[tex] \: \: [/tex]
[tex] \sf \: 2x = 8[/tex]
[tex] \: \: [/tex]
[tex] \sf \: x = \cancel\frac{8}{2} [/tex]
[tex] \: \: \: [/tex]
[tex] \boxed{\sf \: x = 4}[/tex]
Hope Helps~So far I’m 3/3 but i don’t know this one
Answer:
D
Step-by-step explanation:
Your are right i think?
geometry! will give brainlist!!
solve for x. pls help
Answer:
Step-by-step explanation:
5)50=x+59 => x=-9
6)x+77=70 => x=-7
7)x+123=115 => x=-8
8)11x-1=10x+10 +> x=11
9)120+5x+10=180 => 5x=50 =>x=10
10)125=x+134 => x=9
The picture below will help you to understand this question better.
L=32 cm , w = 32 cm how do I solve this please help
You needed to do q and a questions about the same as in the morning
why do we have to learn math
Math is not present only in exercises of school, but it is present in day-to-day life of society. For example, math can be used to:
• pay your bills;
• go to supermarket;
• go to restaurant;
• make a cake or a favorite dish ;
• play music;
• read time in a watch;
• take a medication;
• write a code for an app mobile.
A great advantage is that numbers are universal, thus the number are the same independent of your location.
Mathematics
It is the science that relates everyday practices and nature to human reasoning and numerical logic.
Learn more about mathematics here:
https://brainly.com/question/1146295
How many inches smaller is a 6.17 inch worm than a 10.63 inch worm?
Graph
2x + y = -1
3x + 2y = -6
Answer:
graph below
Step-by-step explanation:
Answer the question correctly
Answer:
1,152 (Yes, I know it seems like a lot but it’s correct)
Step-by-step explanation:
To find this answer, we need to do 32x36
Whenever you have a problem like this, you have to multiply all your different variables/factors in which in this case is 32 and 36
When you do this, you get 1,152 so that’s your answer!
Hope this helps and please award brainliest if possible!
Answer:
1,152
Step-by-step explanation:
It is because 36 pencils and 32 students so you multiply and get 1,152
In the rectangle below, AC has a length of 28 units. What is the length of DE?
D
A
LD
O A. 56 units
O B. 21 units
O C. 28 units
D. 14 units
Answer:
D. 14 units
Step-by-step explanation:
it is a rectangle.
that means both diagonals are equally long.
E is in the middle of of diagonals.
so, since the whole diagonal (AC = DB) is 28 units long, one half of such a diagonal (AE = EC = DE = EB) is then
28/2 = 14 units long.
What would be the total cost of purchasing the number of shirts needed to use your coupon—after your coupon is applied and a 7. 5% sales tax is charged on the purchase?.
The cost of purchasing the number of shirts after discount and sale tax is $40.3125.
What is the percentage?The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.
The discount is 25%.
The total price before the coupon is $50.
The sale tax is 7.5%
The cost of purchasing the number of shirts after discount will be
[tex]\rm Cost = 50*(1-0.75 )\\\\Cost = 97.5[/tex]
The cost of purchasing the number of shirts after the sale will be
[tex]\rm Cost = 37.5*(1.075)\\\\Cost = 40.3125[/tex]
The cost of purchasing the number of shirts after discount and sale tax is $40.3125.
More about the percentage link is given below.
https://brainly.com/question/8011401
help i am stuck on a question and i still dont know how to do it
Answer:
i think it is 1/26
Step-by-step explanation:
Answer:
[tex]\frac{1}{26}[/tex]
Step-by-step explanation:
There are 26 letters in the alphabet. The computer chooses randomly, so everytime it picks a letter, out of all the 26 there is only one first letter of your name.
So, there should be a
[tex]\frac{1}{26}[/tex]
chance that the first letter in your name will be picked.
Hope this helped! Please tell me if I'm right or not, and sorry I didn't go in depth. <3
You open a savings account with a deposit of $1,963. The account as an annual interest rate of
12.7%. How much money will the account have in 2060?
$= 1963 · 1.127'; $184,513.91
B) $ = 1963 · 0.873'; $11.26
In the diagram below , TR and PS intersect at Q to form
four angles. The diagram is not to scale.
Use the information in the diagram to calculate
each value
Check the picture below.
Chen bought a 20-foot chain for $36.50. What is the unit rate of price per foot?
What would you make the size of one of the sides of a right triangle if its other side is 12cm and the hypotenuse is 20cm?
A triangle has the three sides of 2cm, 6cm, and
[tex] \sqrt[2]{10} cm[/tex]
is it a right triangle-yes or no
Step-by-step explanation:
1. 400-144 = 256
unknown side = 16 cm
2.
√10 = 3.16
the biggest side is hypotenuse. assuming 6cm is the hypotenuse.
4+10= 14, which is different From hypotenuse. so it's not a triangle
Solve 2(n+17)/8 = 3/8. Show your work
Answer:
n=-31/2 or -15 1/2
Step-by-step explanation:
reduce the numbers
2*n+17/4=3/8
n+17/4=3/8
8(n+17) =17
8n+136 =12
8n=12-136
8n=-124
The function f(t) = 880(0.1) represents the change in a quantity over t
hours. What does the constant 0.1 reveal about the rate of change of the
quantity?
Answer:
Step-by-step explanation:
the function is decaying exponentially at a rate of 90%
0.1-1=0.9 x100 =90 and it’s decaying because r (0.1) is less than one
Can u please help with the ones I haven’t answered. 17,19-25
Answer:
17. 20v² + 11v - 319. 9x² - 3x - 3025. 12x³ - 15x² + 2x(i use app I'm sorry if I'm wrong)
A computer repair shop charges a flat rate of $50 plus $35 per hour spent repairing each computer. How much will the repair shop charge if the shop does 2.5 hours of work?
Evaluate the function
Answer:
-101
Step-by-step explanation:
Put 9 where x is, and do the arithmetic.
f(x) = -x² -20
f(9) = -9² -20 = -81 -20
f(9) = -101
Can someone please help me with this ty!
Answers:
first box = 240second box = n+pExplanation:
For the first box, we add the two values 90 and 150 to get 240.
The same goes for the second box as well, except we cannot combine n and p together. We leave it as n+p. If we knew what numbers replaced n and p, then we could simplify further.
I WILL MARK BRAINLIEST
pls, help me with this. I'm Lost
Answer:
f(x)=2x−5 if x≤−3
Since the value of x is -3, the first function will be the correct option.
Step-by-step explanation:
The given function is -
f(x)=2x−5 if x≤−3
f(x)=−3x+4 if x>−3
Now we have to evaluate f(-3).
Since we have to calculate the value of f at x = -3, we have to choose the first function.
That is f(x) = 2x - 5.
Hence,
f(−3)=2∗(−3)−5=−6−5=−11
Therefore we have the value
f(−3)=−11
Since the domain of the function is divided into two parts, we have to choose any one function for a given value of x,
For values of x less than or equal to -3, we will use the first function. That is,
f(x)=2x−5 for all x∈(−∞,−3]
And for values of x greater than -3, we will use the second function. That means,
f(x)=−3x+4 for all x∈(−3,∞)
Which expression is equivalent to 24a-8b6c4/6a-4b-2c16 for all values of , , and where the expression is defined?
Answer:
I would choose the second one
Step-by-step explanation:
Mrs. Thomas car averages 23 miles per gallon. How many gallons of gasoline will she need in order to make the round trip ? If the price of gasoline is $2.13 per gallon, what is the cost of the gasoline for the entire trip?
In addition to paying for the gasoline, Mrs. Thomas must also pay $13.92 fo her lunch and $32.98 for her dinner. What is the total amount of her meal expenses?
a. What is the total amount of her gasoline and meal expenses?
b. What operation did you use to figure it out ?
Answer:
a. $70.43
b. 23.43 + 13.92 + 32.98 = t (UNSURE)
Step-by-step explanation:
Since Mrs. Thomas is driving 231 miles using 23 miles per gallon, let's start by dividing 231 by 23
[tex]\frac{231}{23} = 10.043....[/tex]
We need to round 10.043... to 11 because you can't get part of a gallon.
Now, we need to multiply 2.13 by 11 to get the total amount of money for gasoline.
[tex]11 * 2.13 = 23.43[/tex]$
We also have the aditional meal expenses, which are $13.92 and $32.98.
We can use an equation to solve. Our total amount will be represented by t.
[tex]23.43 + 13.92 + 32.98 = t[/tex]
[tex]t = 70.43[/tex]
Hope this helps! Part b seems a bit confusing. I'll fix my answer if you could clarify, like if I do "communative property" or write equation. :))
Dilate the rectangle below by a scale factor of 2. If the current side lengths are 15
and 8, what are the side lengths on the new dilated rectangle?
In your answer, give the new side lengths for the dilated image and explain how you
calculated them.
A
15 cm
B
8 cm
C
D
Answer:
AB and CD would be 30
AC and BD would be 16
Step-by-step explanation:
The scale factor is what you multiply the sides by. Dilate means wider or larger so you multiply each side by the scale factor of 2 to get the higher scaled rectangle.
30 discs coloured green or yellow are placed in a bag so that 5/6 of the discs are yellow. What is the ratio of green to yellow discs in the bag?
Select one:
a. 6:5
b. 1:5
c. 5:1
d. 5:6
Can anyone help me please, and quickly
Answer:
y=10x
Step-by-step explanation:
The line is going up 10 units per x coordinate. It should be y=10x. Even though the y=mx+b exists as the method but there is no b coordinate.
Is 690,269 divisible by 9? Yes or No?
False, But I do not know why, I do not know whether it is false or not, but I think it is false.
Answer:
False.
Step-by-step explanation:
It is false because when dividing an odd number by an odd number, it usually isn't divisible. In this case, 690,269. Is an odd number, because the last number, 9, is odd, which makes the whole thing odd. So, odd divided by odd never turns out well. (By the way the answer is 76,696.5555556).