Answers
Related Questions
What is the value of x in the solution to this system of equations?
3 x-5 y= 22
y=-5 x + 32
Answers
Answer:
6.4
Step-by-step explanation:
The intersection point of 3x-5y=22 and y=-5x+32 is (6.4,0) on a graph, therefore, "x"=6.4
The local newspaper has letters to the editor from 50 people. If this number represents 4% of all of the newspaper's readers, how many readers does the newspaper have?
Answers
Answer:
[tex]1250[/tex]
Step-by-step explanation:
Let the number of people that are readers of the newspaper be [tex]x[/tex]
[tex]50[/tex] people represents [tex]4\%[/tex] of all the reader of the newspaper.
This means
[tex]\dfrac{4}{100}\times x=50[/tex]
[tex]\Rightarrow x=50\times\dfrac{100}{4}[/tex]
[tex]\Rightarrow x=1250[/tex]
So, the number of readers the newspaper has is [tex]1250[/tex].
A certain radioactive substance decays from 100000 grams to 1000 grams in 34 days. What's it's half-life ?
Answers
Answer:
Half life of the radioactive element is 5 days.
Step-by-step explanation:
Formula to get the final amount after the radioactive decay in 't' days,
[tex]A_t=A_0e^{-\lambda t}[/tex]
Here [tex]A_0[/tex] = Initial amount
λ = Decay constant
t = duration of decay
[tex]A_t[/tex] = Final amount
[tex]1000=100000e^{-\lambda(34)}[/tex]
0.01 = [tex]e^{-34\lambda}[/tex]
ln(0.01) = [tex]\text{ln}(-e^{34\lambda}})[/tex]
-4.6052 = -34λ
λ = 0.13544
Since, λ = [tex]\frac{\text{ln}(2)}{t_{\frac{1}{2}}}[/tex]
[tex]t_{\frac{1}{2}}=\frac{\text{ln}2}{0.13544}[/tex]
= 5.11
≈ 5 days
Therefore, half life of the radioactive element is 5 days.
whiuch value makes the following equation true 2(x+8)= x+20
Answers
Answer:
x = 4
Step-by-step explanation:
2(x + 8) = x + 20
2x + 16 = x + 20
-x -x
x + 16 = 20
-16 -16
x = 4
Answer:
x=4
Step-by-step explanation:
2x + 16 = x + 20
-x -x
1x + 16 = 20
- 16 = -16
1x = 4
1 1 = 4 (x=4)
For each set of points below, determine the distance between them
using the distance formula. Each answer in this problem will be an integer.
(10,-5) and (-6, 7)
Answers
Answer:
I need Help on this one too.
Step-by-step explanation:
please help
Answer: The answer is 20
Step-by-step explanation: You use the distance forumula to find the distance between two points
mortar is made by mixing water cement and sand in the following ratio 1 : 2 : 3 . how much of each component is needed to make 3kg of mortar
Answers
Answer:
To make 3 kg of water, we need
0.5 kg water
1 kg cement
1.5kg sand
Step-by-step explanation:
Here, we want to calculate the mass of each component needed to make 3 kg of mortar
We work with the ratio
Total ratio is:
1 + 2 + 3 = 6
water
1/6 * 3kg = 0.5 kg
cement
2/6 * 3 kg = 1 kg
sand
3/6 * 3 = 1.5 kg
Turn 5-3(x+1)=2y-3x+2 into y=mx+b form
Answers
Answer:
Y=0
Step-by-step explanation:
We can write the given equation in the form of y = mx + b as -
y = 0x + 0.
What is expression?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is an expression as -
5 - 3(x + 1) = 2y - 3x + 2
The given expression is -
5 - 3(x + 1) = 2y - 3x + 2
5 - 3x - 3 = 2y - 3x + 2
2 - 3x = 2y - 3x + 2
2 - 3x + 3x - 2 = 2y
2y = 0
y = 0
y = 0x + 0
Therefore, we can write the given equation in the form of y = mx + b as -
y = 0x + 0.
To solve more questions on expressions, visit the link below -
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20% of the girls in class have blonde hair. 16 girls do not have blonde hair. How many total students
Answers
Since 7 have blonde hair and 9 have glasses, that would be a total of 16 persons if there were no overlap; that is, no blonde wears glasses and nobody who wears glasses is a blonde.
But there are 4 persons who have both blond hair and wears glasses. That means, of the 7 who are blondes, 3 of them do not wear glasses. And, of the 9 who wear glasses, 5 of them are not blondes.
So we have 3 who are blondes without glasses, 5 who wear glasses who are not blondes, and 4 blonds with glasses, for a total of 12 persons.
The probability is, therefore, 12/26 or 6/13.
6/100 equals what as a decimal?
Answers
Answer:
0.06
Step-by-step explanation:
hope this helps
6 divide by 100= 0.06
Answer:
Step-by-step explanation:0.06
The area of a triangle is 10 square cm. The base is LaTeX: 2\:\frac{1}{2}2 1 2 cm. Find the height.
Answers
Answer:
[tex]Height = 40[/tex]
Step-by-step explanation:
Given
Shape: Triangle
[tex]Area = 10cm^2[/tex]
[tex]Base = \frac{1}{2}cm[/tex]
Required
Determine the height
Area of a triangle is calculated as:
[tex]Area = \frac{1}{2} * Base * Height[/tex]
Substitute values for Area and Base
[tex]10= \frac{1}{2} * \frac{1}{2}* Height[/tex]
[tex]10= \frac{1}{4}* Height[/tex]
Multiply both sides by 4
[tex]4 * 10= 4 * \frac{1}{4}* Height[/tex]
[tex]4 * 10= Height[/tex]
[tex]40= Height[/tex]
[tex]Height = 40[/tex]
Hence, the height is 40cm
Justin got a gift card to Cold Stone Creamery. Every time he goes, he gets an ice cream sundae, and it costs $6.75. If he bought 4 ice cream sundaes, what number shows the change in value on his gift card?
Answers
Answer:
27
Step-by-step explanation:
27, because 6.75*4=27
Solve the system of linear equations by elimination.
8x - 5y = 11
4x – 3y = 5
Answers
8x - 5y = 11
4x - 3y = 5
Answer:
12x - 2y = 16
Does anyone know what the answer is
Thanks luvs xx
Answers
Reason:
n(u)= n(M) + n(E) +n(M union compliment E) - n(M intersect E)
26= 15+13+9-x
x=37-26
x=11 (which is the number of student who like both English and maths
Now,
The number of students who like English but not maths is
n(E) - x
=13-11
=2
Hailey makes and sells scarves next week she will pay a 25$ fee for the use of a booth at a craft fair. She will charge 12$ for each scarf she sells at the fair. Write an expression to determine
Answers
Answer:
12x=25
Step-by-step explanation:
This, I need the answer to this
Answers
Answer:
Cos60=x/11
X=5.5cmmmmmmmmmmmm
Does this look correct? Please tell the truth.
Answers
Answer:
Yea it does
Step-by-step explanation:
Answer:
it looks right to me
Step-by-step explanation:
WILL GIVE BRAINLIEST!!!!!!!!!!!
Answers
Answer:
hey i am
please mark me as brainlist
Ten baseballs and four ping-pong balls cost $46. One baseball costs one dollar more than two ping-pong balls. Find the cost of one baseball and the cost of one ping-pong ball.
Answers
Answer:
1 baseball cost $4
1 ping pong cost $1.5
Step-by-step explanation:
let the cost of baseball be b and the cost of ping pong be p
10 baseballs = 10b
4 ping pong = 4p
Adding both gives total $46
10b + 4p = 46 •••••••••(i)
baseball costs 1 dollar more than 2 ping pong
b = 2p + 1 •••••••(ii)
Substitute ii into i
10(2p + 1) + 4p = 46
20p + 10 + 4p = 46
24p = 46-10
24p = 36
p = 36/24
p = $1.5
b = 2p + 1
b = 2(1.5) + 1
b = 3 + 1 = $4
When a rocket is launched, it climbs 50 feet for every 13 feet it travels horizontally. Estimate the rocket's distance (Find the missing side of triangle).
Answers
Answer:
i don t this topic because i am the secundary
Step-by-step explanation:
.
The value of rocket's distance will be 51.66.
What is Pythagoras theorem?
The Pythagoras theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the square of the other two sides.
Given that;
When a rocket is launched, it climbs 50 feet for every 13 feet it travels horizontally.
Now,
Since, When a rocket is launched, it climbs 50 feet for every 13 feet it travels horizontally.
And, The figure is shown the right triangle.
So, We can apply the Pythagoras theorem as;
⇒ x² = 50² + 13²
⇒ x² = 2500 + 169
⇒ x² = 2669
⇒ x = √2669
⇒ x = 51.66
Thus, The value of rocket's distance will be 51.66.
Learn more about the Pythagoras theorem visit:
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A crew is made up of 12 men the rest are women. 40% of the crew are men. How many women are in the crew.
Answers
Answer:
Step-by-step explanation:
let nr of women be x
12 men represents 40%
?women represents 100%
12*100/40=30
30 women and 12 men are in the crew
3x + 6 < 2x - 5
How to solve
Answers
Answer:
x<-11
Step-by-step explanation:
3x+6<2x-5
subtract the far x to gather
1x+6<-5
subtract singles
1x<-11
simplify
x<-11
Justin is 2 years older
than 1/4 his brothers age.
Brother's age = 12
Justin's age =
A. 10
B. 6
C. 5
Answers
5
Explanation:
1/4 of 12 = 3
2 + 3 = 5
Which of the following is the correct factorization of the polynomial below?
2x2. 12x + 18
A. 2(x-3)2
B. 2(x + 6)(x+3)
C. (2x + 6)(x+3)
D. The polynomial is irreducible.
Answers
Answer:2(x-3)2
Step-by-step explanation:
There are 4 colors of Starburst flavors: yellow, pink, red, and orange. If the probability of getting an orange is 2 5 2 5 , yellow is 1 10 1 10 , and the probability of getting red is 3 10 3 10 , what is the probability of getting pink?
Answers
Answer: 1/5
Step-by-step explanation:
From the question, we are informed that there are 4 colors of Starburst flavors: yellow, pink, red, and orange. We are further told that the probability of getting an orange is 2/5, yellow is 1/10 , and red is 3/10.
The probability of getting pink would be:
= 1 - [P(orange) + P(yellow) + P(red)]
= 1 - (2/5 + 1/10 + 3/10)
= 1 - (4/10 + 1/10 + 3/10)
= 1 - 8/10
= 2/10
= 1/5
1. 8 feet to 10 feet *
Answers
Answer:
ratio 8:10
Step-by-step explanation:
the ratio is 8:10
Answer:
as a ratio 8:10
Step-by-step explanation:
What is the area of the base of the cone?
A cone with diameter 18 centimeters, height of 12 centimeters, and slant height of 15 centimeters.
B = pi r squared
18 pi centimeters squared
81 pi centimeters squared
225 pi centimeters squared
324 pi centimeters squared
Answers
Answer:
81 pi centimeters squared
Step-by-step explanation:
Area of circle = πr²
18/2 = 9
π9²
π(9 x 9)
π81
A group of friends went on a drive. The graph below shows the distance the
friends traveled, in miles, over time, in hours.
Distance Traveled Over Time
Distance Tred
Time (in hours)
Based on the graph, which statement best describes the friends' drive?
A. The friends traveled at a slow pace, sped up, and then traveled at a quick pace.
B. The friends traveled at a slow pace, stopped, and then traveled at a quick pace,
C. The friends traveled at a quick pace, stopped, and then traveled at a slow pace.
D. The friends traveled at a quick pace, slowed down, and then traveled at a quicker pace.
Answers
Answer:
i'm not a 100% sure but i think the answer is C.
9+9y=
9y-9=
9(y-1)=
9(y+1)=
9y+1=
1+9y=
Answers
Answer:
Step-by-step explanation:
9+9y=18y
9y-9= y
9(y-1)=9y−9 simplifed
9(y+1)=9*1y
9y+1=10y
1+9y=10y
sorry if I got some wrong I tried my best.
there are 3 cups of rice in 12 servings. write a porportion that gives the number x of servings in 1 cup of rice.
Answers
Answer:
1 cup= 4 servings
Step-by-step explanation:
The sum of two numbers is 85. The second number is 4 more than 2 times the first number. Let x represent the first number and let y represent the second number. What are the two numbers? Use the table to guess and check.
Answers
Step-by-step explanation:
x+y=85
y=4+2x
[tex]x = 85 - y \\ y = 4 + 2(85 - y) \\ y = 4 + 170 - 2y \\ 3y = 174 \\ y = 58 \\ x = 85 - y \\ x = 27[/tex]
