Answer:
-9
Step-by-step explanation:
let 'x' be the unknown number
lets change the statment to an equation
8x + 3x = 12x + 9
11x = 12x + 9
11x-12x = 9
-x = 9
x = -9
hope it helps ❤❤❤
For any question comment me
A phone call costs $0.58 per minute for the first three minutes and $0.15 per minute for each additional minute. If the total charge for the call was $4.29, how many minutes long was the call Explain the answer in terms of the problem. Show all work.
Answer:
20 minutes
Step-by-step explanation:
.58 times 3 equal 1.74
4.29 - 1.74 = 2.55
2.55 divided by .15 = 17
17 + 3 = 20
hopefully this helps you :)
pls mark brainlest ;)
Ron asked 18 classmates whether they prefer granola bars over muffins. he used a calculator to compare the number of classmates who said yes to the total number he surveyed. the calculator showed the result as 0.66666667. how many students prefer granola bars over muffins?
Explanation:
Multiply 0.66666667 with 18 to get
0.66666667*18 = 12.00000006
The 6 at the very end is due to rounding error. In reality the 6's in 0.66666667 should go on forever. That 7 is from rounding up.
Anyways, the result 12.00000006 should be 12 exactly.
Note how
12/18 = 0.66666667
when using a calculator.
Answer:
12
Step-by-step explanation:
Use equilvalent fractions 0.6 repeating is 2/3 than convert it over 18 students which is equal to 12/18 students chose granola bars.
Evaluate 20x y given that x=15 and y= 10.
Answer:
3000
Step-by-step explanation:
20xy20×15×10just let the x and y into it..Which choice correctly explains which product is the better buy? Coffee Brand A is sold for $6.99 per pound Coffee Brand B is sold for $5.69 for 12 ounces Question 1 options: A Coffee Brand A is a better buy because its unit rate is $2.29 per ounce B Coffee Brand A is a better buy because its unit rate is $0.44 per ounce C Coffee Brand B is a better buy because its unit rate is $2.11 per ounce D Coffee Brand B is a better buy because its unit rate is $0.47 per ounce.
Answer: Choice B
Coffee Brand A is a better buy because its unit rate is $0.44 per ounce
=======================================================
Explanation:
Brand A is sold for $6.99 per pound, which is the same as saying $6.99 per 16 ounces. The unit rate is 6.99/16 = 0.436875 = 0.44 dollars per ounce
Brand B is sold for $5.69 for 12 ounces. The unit rate is 5.69/12 = 0.47416 = 0.47 dollars per ounce
Brand A is cheaper per ounce compared to brand B.
------------------
Here's another way we can look at it
Brand A is $6.99 per 16 ounces. We can set up the equation below
6.99 dollars = 16 ounces
then divide both sides by 16 to turn "16 ounces" into "1 ounce"
So,
6.99 dollars = 16 ounces
6.99/16 dollars = 16/16 ounces
0.436875 dollars = 1 ounce
0.44 dollars = 1 ounce
is the unit rate for brand A.
Similar steps would happen with brand B as well.
QR is a radius of r and PQ is tangent to r. Find the value of x. Please help me!! I am in dire need! What is X?! Thank you for any assistance. :)
Answer:
54
Step-by-step explanation:
The Pythagorean theorem applies.
(x +36)^2 = 72^2 + x^2
x^2 +72x +1296 = x^2 +5184
72x = 3888 . . . . . . subtract x^2+1296
x = 54 . . . . . . . . . . . divide by 72
Find the midpoint of the two points (-4,6) & (1.4)
Answer:
(-3/2, 5)
Step-by-step explanation:
(x₁ + x₂) / 2 , (y₁ + y₂) / 2
(-4 + 1) / 2 , (6 + 4) / 2
-3/2 , 10/2
(-3/2, 5)
Please help me idk what to do I have other ones too
Answer:
B
Step-by-step explanation:
all the other ones are either 50 - 12 or 50 + 12, but B is the total amount of money (x) minus 50($) is 12($).
not sure if that makes sense.
Answer:
b. Haley withdrew $50 from her savings account . After withdrawal she had only $12. How much money was in the account before withdrawalStep-by-step explanation:
20 points Without solving the systems, determine if there is 0, 1 or infinite solutions. Explain how you know.
Answer:
Infinite Solutions.
Step-by-step explanation:
3x+2y=8 for x:
3x+2y=8
3x+2y+−2y=8+−2y(Add -2y to both sides)
3x=−2y+8 3x 3 = −2y+8 3 (Divide both sides by 3)
x= −2 3 y+ 8 3
Substitute −2/3y + 8/3 for x in 4.5x+3y=12:
4.5x+3y=12
4.5( −2/3y+ 8/3 )+3y=12
12=12(Simplify both sides of the equation)
12+−12=12+−12(Add -12 to both sides)
0=0
Infinitely many solutions.
Answer:
Infinite Solutions.
Step-by-step explanation:
3x+2y=8 for x:
3x+2y=8
3x+2y+−2y=8+−2y(Add -2y to both sides)
3x=−2y+8 3x 3 = −2y+8 3 (Divide both sides by 3)
x= −2 3 y+ 8 3
Substitute −2/3y + 8/3 for x in 4.5x+3y=12:
4.5x+3y=12
4.5( −2/3y+ 8/3 )+3y=12
12=12(Simplify both sides of the equation)
12+−12=12+−12(Add -12 to both sides)
0=0
Infinitely many solutions.
The area of the square base is S(x), where x is the length of the concrete foundation, and the area of the base of the cylindrical tank is C ( r ), r is the radius of the cylindrical tank. What does the expression S ( C ( r ) ) represent?
Answer:
C(r) is the area of the base of a cylindrical tank with radius r.
We know that this area is:
C(r) = pi*r^2
S(x) is the area of the square base where x is the side length of the base.
S(x) = x*x
Now, we have the expression:
S( C(r)) wich means that we are evaluating the function S(x) in the point x = C(r)
Now, we have a problem here.
In S(x), S(x) is in units of area, and x is in units of length.
And the same for C(r), C(r) is in units of area, and r in units of length.
then we can not have x = C(r)
Then this expression does not represent anything, because the units do not match, so it has no physical sense.
(x - 9(a/8)) = a a = 16
Answer:
x = 34
Step-by-step explanation:
(x - 9(16/8)) = 16
(x - 9(2)) = 16 Divide 16 and 8
x - 18 = 16 Multiply 9 and 2
x = 34 Add 18 to both sides
Tasha was $422.75 last week. Of that paycheck $42.75 was extra overtime pay for 3 hours. If the rest of the check was Tasha’s weekly earnings for 40 hours, what is her weekly per-hour rate?
The solution is $ 9.50
The weekly per hour rate of Tasha is $ 9.50
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
The weekly per hour of Tasha last week = $ 422.75
The extra overtime pay of Tasha for 3 hours = $ 42.75
The total number of hours working = 40 hours
So , the equation will be
The weekly per hour of Tasha without overtime = weekly per hour of Tasha last week - overtime pay of Tasha for 3 hours
Substituting the values in the equation , we get
The weekly per hour rate of Tasha without overtime = 422.75 - 42.75
The weekly per hour of Tasha without overtime = $ 380
So , The weekly per hour rate of Tasha A = The weekly per hour rate of Tasha without overtime / total number of hours working
Substituting the values in the equation , we get
The weekly per hour rate of Tasha A = 380 / 40
The weekly per hour rate of Tasha A = $ 9.50
Therefore , the value of A is $ 9.50
Hence , The weekly per hour rate of Tasha is $ 9.50
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In the figure below, K lies between J and L. Find the location of K so that JK is 1/7 of JL.
Answer:
-22 is the value of K.
Step-by-step explanation:
A simple way to see how far a mid-point or end-point is from another is by adding or subtracting. For this figure I added to see how many numbers would add twice to get from -15 to -29. -14 is the exact number from -15 to -29; divide that by 2 to get half of -14 which is -7. -7 + (-15) gives you -22.
The location of K so that JK is 1/7 of JL is -22.
Given that, K lies between J and L.
We need to find the location of K so that JK is 1/7 of JL.
What is a line segment?In geometry, a line segment is a part of a line that is bounded by two distinct end points and contains every point on the line that is between its endpoints.
Now, the distance between the points J and L on the number line is 14.
So, 1/7(14)=2
A simple way to see how far a mid-point or end-point is from another is by adding or subtracting. For this figure, I added to see how many numbers would add twice to get from -15 to -29. -14 is the exact number from -15 to -29; divide that by 2 to get half of -14 which is -7. -7 + (-15) gives you -22.
Therefore, the location of K so that JK is 1/7 of JL is -22.
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Dividing circumference with radius
If you divide the circumference C over the radius r, you get 2pi
2pi = C/r
this is because
C = 2pi*r
is one formula to find the circumference. Another formula is
C = pi*d
which works because d = 2r, ie the diameter is twice the radius.
A laundry detergent recommends 1/4 cup of detergent for a 1/2 load of clothes. How much detergent is recommended for 4 loads of clothes?
Answer:
2 cups
Step-by-step explanation:
Because you have 4 loads of clothes you would have to use
1/4 of a cup 8 times
1/4*8=8/4 simplified is 2 which no fractions
so the answer is 2 cups for 4 loads of clothes.
12 people can comfortably fit in a 5 x 5 foot square. Use this value to estimate the size of a crowd that is 8 feet deep on both sides of the street along a 2 mile section of a parade route.
Answer:
40,550
Step-by-step explanation:
Given that 12 people can comfortably fit in a 5 × 5 foot square
Area of square = 5²= 25 ft²
The dimension Given by : 8 feets depth on both sides along a 2 mile section signifies a rectangular area.
Area of rectangle = (length × width)
Recall :
1 mile = 5280 feets
2 miles = 5280 × 2 = 10,560 feets
Area = 8 × 10560 = 84480 sq feets
84480 / 25 = 3379.2
Estimated number of people will be :
3379.2 × 12 = 40,550.4
Hence, estimated number of people = 40,550
Patrick and his friends Jerome and marina collect football cards. Altogether they have 3000 cards. Patrick has 1533 cards in his collection and Jerome has 837 cards. Which statements about the football cards are correct ?
Answer:
i'm not sure what the statements are but here is some information
p + j + m = 3000
1533 + 837 + m = 3000
m = 630
Marina has 630 cards
w−2+2w=6+5w how do I solve this I have been stuck on this for like 10 minutes.
Answer:
W= -3
Step-by-step explanation:
3w=6+5w
-5w on each side
-2w=6
Divide by - 2 on each side
W=-3
-3-(-8)-(-2)=Xggggggggggggggggggggggg
Answer:
x is 7
Step-by-step explanation:
-3-(-8)-(-2) = x
7 = x
(x+2)^3/4=27. Solve for x.
Answer:
x = 79.
Step-by-step explanation:
Simplify both sides of the equation, then isolate the variable.
The current value of a baseball card is 50 times its original value v (in dollars). The baseball card is worth $62. Write and solve an equation to find the original value of the baseball card.
Answer:
62*50=3100
enjoy
Point M is the midpoint of segment AC. Point M is located at (25.5, 60.1), and point C is located at
(18.3, 72.5).
M (25.5, 60.1)
C (18.R 72.5)
Find the location of point A. Round to the nearest tenth.
Answer:255.601
Step-by-step explanation:
is this correct? And if i’m not can you explain please?
Answer:
Option C
Step-by-step explanation:
[tex] {9x}^{10} \times ( - {12}^{13} )[/tex]
[tex] = > {( - 12 \times 9)}x^{10 + 13} [/tex]
[tex] = > { - 108x}^{23} [/tex]
Is 0.7 a rational or irrational number? why is a rational number
0.7 is a rational number.
Explanation:Because it is a terminating decimal expansion.
Answer:
The decimal 0.7 is a rational number. It is read as seven tenths and is equivalent to the fraction 7/10. Since it can be written as a fraction
I need help on this problem
Answer:
The answer is c.
Answer:
I hope the information below helpsStep-by-step explanation:
Option 1
[tex]\left|-0.2\right| = 0.2\\\\\mathrm{Apply\:absolute\:rule}:\quad \:|-a|=a,\:\quad \:a>0\\\\0.2 =0.2\\\\True[/tex]
Option 2
[tex]-\left|0.2\right| = 0.2\\\mathrm{Apply\:absolute\:rule}:\quad \:|a|=a,\:\quad \:a\ge 0\\\\-0.2 =0.2\\False[/tex]
Option 3
[tex]\left|0.2\right| =0.2\\\mathrm{Apply\:absolute\:rule}:\quad \left|a\right|=a,\:a\ge 0\\\\0.2 =0.2[/tex]
Option 4
[tex]-\left|0.2\right| =- 0.2\\\mathrm{Apply\:absolute\:rule}:\quad \:|a|=a,\:\quad \:a\ge 0\\\\-0.2 =-0.2\\True[/tex]
What set of reflections would carry triangle ABC onto itself?
Could someone please help? I literally can’t figure this out
Answer:
56
Step-by-step explanation:
okay last one but
5(n^2 + n) – 3(n^2 – 2n)?
Answer =2n^2+11n
you welcome:)
2n² + 11n
Step-by-step explanation:5(n² + n) – 3(n²2 – 2n) =
= 5n² + 5n - 3n² + 6n
= 2n² + 11n
if 6 orange cost nu.48what is the cost of each
Step-by-step explanation:
Hey there!!
The cost of 6 orange = nu.48
The cost of 1 orange = nu.48/6
= nu.8
Therefore, the cost of each orange is nu.8.
Hope it helps...
Solve the equation 3/4=m+1/4
Answer:
1/2 = m
Step-by-step explanation:
3/4=m+1/4
Subtract 1/4 from each side
3/4 - 1/4=m+1/4-1/4
2/4 = m
Simplify
1/2 = m
Answer:
m=
2
1
=0.500
Step-by-step explanation:
Please help I will be very grateful for this
Answer:
____________
the answer is B
___________
explanation
Factor out the greatest common factor from each group.
Group the first two terms and the last two terms.
(x^2 - 2x) - 3xy + 6y
Factor out the greatest common factor (GCF) from each group.
x(x - 2) - 3y (x - 2)
Factor the polynomial by factoring out the greatest common factor, x - 2
(x - 2) (x - 3y)
Answer:
Step-by-step explanation:
your answer would be B.
add and subtract the second turn to the expression and Factor by grouping