Answers
Answer: x=8
Step-by-step explanation: 2x+5 /10 = 42 /20
(2x+5)(20)=(42)(10)
40x+100−100=420−100
40x /40 = 320 /40
x=8
Related Questions
Abel saved 43 more nickels than dimes. After he spent 17 dimes he had twice as many nickels than dimes. How many coins did he have left?
Answers
Answer:
180 coins
Explanation:
N = number of nickels (no nickels spent)
D = number of dimes initially saved
D' = number of dimes left after spending
1) N = D + 43
2) D' = D - 17
3) N = 2*D' = 2*(D - 17)
Set equations 1) and 3) equal to each other and solve for D:
D + 43 = 2*(D - 17)
D + 43 = 2*D - 34
D = 43 + 34 = 77
N = D + 43 = 77 + 43 = 120 nickels left
D' = D - 17 = 77 - 17 = 60 dimes left
Total coins left = 120 + 60 = 180 coins (I hope this is not too confusing for you)
Number of nickels 120, number of dimes 60 and total number of coins 180.
Given that, Abel saved 43 more nickels than dimes. After he spent 17 dimes he had twice as many nickels than dimes.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Let
N = number of nickels (no nickels spent)
D = number of dimes initially saved
D' = number of dimes left after spending
N = D + 43 ..........(1)
D' = D - 17 ..........(2)
N = 2×D' = 2×(D - 17) ..........(3)
Set equations (1) and (3) equal to each other and solve for D:
D + 43 = 2×(D - 17)
D + 43 = 2D - 34
D = 43 + 34 = 77
N = D + 43 = 77 + 43 = 120 nickels left
D' = D - 17 = 77 - 17 = 60 dimes left
Total coins left = 120 + 60 = 180 coins
Therefore, number of nickels 120, number of dimes 60 and total number of coins 180.
To learn more about an equation visit:
https://brainly.com/question/14686792.
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Which expression is equivalent to , if y > 0?
A.
B.
C.
D.
Answers
Answer:
D. 126y²Step-by-step explanation:
Given expression:
3[tex]\sqrt{2y^3}[/tex]· 7[tex]\sqrt{18y}[/tex]Simplify:
21 [tex]\sqrt{2*18*y^{3+1}}[/tex] = 21[tex]\sqrt{36y^4}[/tex] = 21(6y²) = 126y²Correct choice is D
Answer:
D. 126y²
Step-by-step explanation:
I need help on this ?
Answers
Answer:
The Void
Step-by-step explanation:
no one can help you now
Demi has 221 songs on her phone. The songs take up 884 megabytes of storage . Each song takes up same amount of space . How many megabytes do 135 of these songs take up?
Answers
Answer:
540 megabytes
Step-by-step explanation:
We will first need to find out how much space a singular song will take up. We will do this by the storage taken up (884) by the number of songs she has:
884 / 221 = 4 mb taken up per song
Then we want to find out how many megabytes 135 of these songs take up, so we will multiply the mb taken up per song (4) by the number of songs we want to find (135):
4 x 135 = 540 megabytes
Edit: made a mistake in my original answer, apologies!
please help I'll give brainliest to the correct answer.
A triangle has side lengths 5, 7, and 11. Classify the triangle by it's angles. show your work.
Answers
Answer:
it is probably a right triangle
Step-by-step explanation:
right angle because 11 is 7 beside and 5 under
Answer:
i think its a right angle, not sure tho
Step-by-step explanation:
Greg kicked the soccer ball 75 feet. How many yards did he kick the ball? Answer without units
Answers
Answer: I believe 25 yards.
Step-by-step explanation: Hope it helps! Have a great day!!!
Find c. Round to the nearest tenth.
Answers
Answer:
Step-by-step explanation:
A = 150°
B = 12°
C = 180 - (150 + 12) = 18°
b = 10 cm
Apply the sine rule:
[tex] \frac{b}{sin(B)} = \frac{c}{sin(C)} [/tex]
Plug in the values
[tex] \frac{10}{sin(12)} = \frac{c}{sin(18)} [/tex]
Multiply both sides by sin(18)
[tex] \frac{10}{sin(12)}*sin(18) = \frac{c}{sin(18)}*sin(18) [/tex]
[tex] \frac{10*sin(18)}{sin(12)} = c [/tex]
c = 14.9 cm (nearest tenth)
PLS ANSWERRRRRRRRRRR
Answers
Bc I’ve done this before
(6x2 - 10x +9)+(-5x2 + 9x-5)=
Answers
Answer:
x² - x + 4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
(6x² - 10x + 9) + (-5x² + 9x - 5)
Step 2: Simplify
Combine like terms (x²): x² - 10x + 9 + 9x - 5Combine like terms (x): x² - x + 9 - 5Combine like terms (Z): x² - x + 4What is the 3rd number in the sequence 2n +2?
Answers
Answer:
it would be 2 right by the question mark
Step-by-step explanation:
so 2 is a number the n is going to be a number and then that leaves the last 2 left
Please answer quick! I have a headache and I don't want to do the work.. Giving brainliest to the RIGHT ANSWER.
How many 1/8's are in 25?
Answers
Answer:
There are 200 1/8's in 25.
Step-by-step explanation:
If I am thinking of this correctly then there are 200. Basically, what how I interpreted this is that you mean 8 1/8's make up 1. and you need 25 whole 1's. If that is the case the correct answer is 200.
200 1/8. Hope this helps and feel better!
Let f be the function given by f(x) = x +
Vx+1
X - 1
Find and simplify f(5).
Answers
Answer:
A)4
Step-by-step explanation:
Since (3+1)^1/2=2
and 3-1=2
2/2=1
3+1=4
PLEASE HELP I ATTACHED THE PICTURE
Answers
Answer:
option 3 is correct
Step-by-step explanation:
because ....
It has to be Option 3/C
Exlaination: I have done this problem before and got it right.
A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 5 answer choices- a, b, c, d, e- and only one correct answer. What is the probability that he answered both of the problems correctly? Write your answer as a fraction in simplest form.
Answers
1 correct answer out of 5 = 1/5
1/5 x 1/5 = 1/25
please help me . i'm trying to get my grades up and i'm struggling
Answers
Answer:
D
Step-by-step explanation:
just took that test
What’s the value of X on the parallelogram below?
Answers
Answer:
I think x is 34.75.
Step-by-step explanation:
Same side interior angles are supplementary to each other. Angle C and angle E are congruent to each other.
(4x-20)+61=180
4x+41=180
subtract 41 from both sides
4x=139
x=34.75
write the following sets in explicit form and determine the cardinality of
each set.
a) μ = {x: x is a positive counting number less 25}
Answers
Answer:
As the givens set μ has 24 elements.
Therefore,
Cardinality = 24Step-by-step explanation:
Given
μ = {x: x is a positive counting number less 25}
The set of natural numbers is often termed as the Counting number set.
As the counting numbers are less than 25.
Thus, the set μ is:
μ = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24}
We know that cardinality of the set is the number of elements in a given set.
As the givens set μ has 24 elements.
Therefore,
Cardinality = 24What is the value of the underlined digit write your answer as a fraction pls help
Answers
Answer:
2/100
Step-by-step explanation:
a thousandth basically
Answer:
2 over 1000
Step-by-step explanation:
At the not much fun amusement park, Otaka Shawa paid $25.75 for three game of mini-marbles-golf and two rides on the slow-go-karts,while Soren Derkeister paid $35.75 for four games of mini-marbles-golf and three rides on the slow-go-karts. How much did each activity cost?
Answers
3m + 2g = 25.75
4m + 3g = 35.75
We’ll take the top equation and solve for g in terms of m.
2g = -3m + 25.75
g = (-3m + 25.75)/2
Then substitute that mess, um, expression, I to the second equation to solve for m.
4m + 3[(-3m + 25.75)/2] = 35.75
4m + (-9m + 77.25)/2 = 35.75
4m -4.5m + 38.625 = 35.75
-0.5m = -2.875
0.5m = 2.875
m = 5.75
Now we pick an equation, plug in the numerical value of m, and solve for a numerical value of g
3m + 2g = 25.75
3(5.75) + 2g = 25.75
17.25 + 2g = 25.75
2g = 8.50
g = 4.25
Checking the math:
4m + 3g = 35.75
4(5.75) + 3(4.25) = 23 + 12.75 = 35.75
Mini marbles golf cost $4.25, slow go karts cost $5.75.
Draw a pair of adjacent complementary angle
Answers
Answer:
one angle can be 50 degrees and the other angle will be 40 degrees
Step-by-step explanation:
complementary is when 2 angles add up to 90 degrees
MARKING BRAINLIEST
Which sentence is an example of an objective summary from Cynthia Crossen's "A Culinary Wasteland"?
A. Furthermore, Mr. Schlosser's appraisal is not comprehensive but a hodgepodge of impressions, statistics, anecdotes and prejudices.
B. As a stickler about statistics, I was disturbed by Mr. Schlosser's cavalier manipulation of data, which produced some startling — and, frankly, unbelievable — "facts."
C. Americans are addicted to cheap, bad food, he argues, and like all addictions, this one exacts broad and often unseen costs from the community.
D. Taking individual responsibility for one's impact on the global economy is far more complicated than just saying no to fast food, as Mr. Schlosser advises.
Answers
James drinks 2.4 litres of water in a day. Stephen drinks 1/3 more. How much water does Stephen drink? What is this in millilitres and litres?
Answers
2.4 x 1/3 = 0.8 liters more.
2.4 + 0.8 = 3.2 liters
Stephen drinks 3.2 liters which is 3,200 milliliters
i need help on this question
Answers
Answer:
90in²Step-by-step explanation:
According to the question
The area of the shape=
(11+4)×6 in²
15×6 in²
90in²
Square root of. 100
Answers
Answer:
10
Step-by-step explanation:
10 squared is 100
This is because 10•10 equals 100.
Hope this helps!! :)
A rectangular garden has a width of 10 feet and a length of 14 feet. A cement walkway is added around the outside of the garden. The area of the garden and the walkway together are 320 square feet. What is the width of the walkway
Answers
Answer:
The width of the walkway is of 12.86 feet.
Step-by-step explanation:
Area of a rectangle:
The area of a rectangle of length l and width w is given by:
A = lw
A rectangular garden has a width of 10 feet and a length of 14 feet.
So the area of the rectangular garden is of 10*14 = 140 square feet.
The area of the garden and the walkway together are 320 square feet.
So the area of the walkaway is of 320 - 140 = 180 square feet.
What is the width of the walkway
It has the same length of the garden, of 14. So
[tex]14w = 180[/tex]
[tex]w = \frac{180}{14}[/tex]
[tex]w = 12.86[/tex]
The width of the walkway is of 12.86 feet.
Which side lengths form a right triangle? Choose all answers that apply
Answers
Answer:
B.
Step-by-step explanation:
[tex] \sqrt{65} [/tex]
is about 8 and it passes the sum test
for a, the sum of 2,15 must be greater than 17 and its equal to so no
Put the expressions in order from least to greatest value
Answers
Answer:
Least: [tex]\sqrt[6]{64}[/tex]
2nd least: ([tex]\sqrt{64}[/tex])²
2nd greatest: [tex]\sqrt{81}[/tex] · [tex]\sqrt{81}[/tex]
Greatest: 1/64^-2
Step-by-step explanation:
[tex]\sqrt[6]{64}[/tex] = 2
([tex]\sqrt{64}[/tex])² = 64
[tex]\sqrt{81}[/tex] · [tex]\sqrt{81}[/tex] = 9 · 9 = 81
1/64^-2 = 4,096
A student ask the question, "what is a plant?" this is NOT a testable question because. SCIENCE
Answers
A particle moves along the x-axis. The velocity of the particle at time t is −2t+8 . What is the total distance traveled by the particle from t=1 to t=6?
Answers
Answer:
13
Step-by-step explanation:
The velocity is given by:
[tex]\displaystyle v(t)= -2t + 8[/tex]
And the total distance given the velocity is given by:
[tex]\displaystyle \int_{a}^{b}|v(t)|\, dt[/tex]
So, the total distance traveled by the particle from t = 1 to t = 6 will be:
[tex]\displaystyle d=\int_{1}^{6}|-2t+8|\, dt[/tex]
The absolute value tells us that:
[tex]\displaystyle |-2t+8| = \left\{ \begin{array}{ll} -2t+8 & \quad x \leq 4 \\ -(-2t+8) & \quad x > 4\\ \end{array} \right[/tex]
So, split the integral into two parts:
[tex]\displaystyle d=\int_{1}^{4} (-2t+8)\, dt+\int_{4}^{6}(-(-2t+8))\, dt[/tex]
Integrate:
[tex]\displaystyle d=(-t^2+8t)\Big|_{1}^{4}+(t^2-8t)\Big|_{4}^{6}[/tex]
Evaluate:
[tex]\begin{aligned} d&=[(-4^2+8(4))-(-1^2+8)]+[(6^2-8(6))-(4^2-8(4)]\\ &= [16-7]+[-12-(-16)]\\ &=9+4 \\ &=13 \end{aligned}[/tex]
A freight train travels 50 miles per hour. Write a linear function that describes the distance the train travels over time. Then make a graph to show the distance the train travels in 5 hours.
Answers
Answer:
d = 50h
d = distance traveled
h = hours
Step-by-step explanation: