Answer:
y = 40x + 30
Step-by-step explanation:
The equation for a linear function is given by:
y = mx + b;
where y and x are variables, m is the slope or rate of change of the function and b is the initial value of y at x = 0 (that is y intercept).
Let y represent the total cost and x represent the number of hours worked.
The electrician charges 110 after 2 hours of work and 190 for 4 hours of work.
Representing in coordinate form as (x, y) we get:
(2, 110) and (4, 190)
The equation of the function can be gotten using the formula:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]
Therefore:
[tex]y-110=\frac{190-110}{4-2}(x-2)\\\\y-110=40(x-2)\\\\y-110=40x-80\\\\y=40x-80+110\\\\y=40x+30[/tex]
Darian is asked to determine the volume of a cylindrical pipe for his dad’s plumbing business. The pipe has a diameter of 7 inches and a length of 36 inches. Which best explains how Darian can determine B, the area of the base of the pipe, in square inches?
Answer:
D
Step-by-step explanation:
a- Multiply the square of 7/2 by 3.14
b-Multiply 36 and 36
c-Multiply 7 and 7
d-Multiply the square of 36 by 3.14
CAN ANY1 HELP ME ON QUESTION C ON THE IMAGE I ATTACHED I NEED HELP ASAP 30 POINTS AND BRAINLEST FOR FIRST ANSWER.
C, d ,a
dfioahufhaufhuashfasfasfasf
Answer:
a) A
b) C
c) 2 beads are blue, 1 is green, 3 are purple, and the remaining 6 are red.
Red and purple combined equal 9 out of 12. You can simplify that to 3/4.
Step-by-step explanation:
a) A is impossible because there is a 0/1 chance that it will happen.
b) C is likely because it is closest to the 1 without being on it. It wouldn't be D because there is a definite chance that it will happen.
c) I explained my reasoning in the answer.
Please help me! I will mark brainliest!
Answer:
Your picture didn't load?
Step-by-step explanation:
The parking garage at the airport has 86 empty parking spaces and 14 full parking spaces. What percentage of the spaces in the garage are empty?
Geoff eanrs 10% commision on his total sales at work. Suppose Geoff's sales totaled $895 last week. How much did he earn in commission?
A. $8.95
B. $89.50
C. $903.95
D. $984.50
There are 738 students going on a school field trip. Each bus can carry 33 students. How many buses should the school reserve?
Answer:
23 buses
Step-by-step explanation:
It comes to 22.3636364 so you need to round up.
Diane has 12 coins that total $1.60. If the coins are all nickels and
quarters, how many of each type does she have
Answer:
she has 4 quarters because 4 quarters equals $1 and she has 12 nickles because 12 × 5 =60
at a hot dog stand they serve regular and footlong hot dogs at a ratio of 5 to 3 based on this ratio how many footlongs hot dogs will be served there is a total of 120 hot dogs served. A. 45 footlong hot dogs, B. 75 footlong hot dogs, C. 72 footlong hot dogs
Answer:
45
Step-by-step explanation:
Ratio is 5:3
So total ratio "parts" is 5 + 3 = 8
In total there are 120 dogs served, so each part is:
120/8 = 15 dogs
Since, footlong hot dogs are "3" parts, and each part is 15 dogs, there will be:
3 * 15 = 45 footlong hotdogs
Answer:
45
Step-by-step explanation:
Joel wants to determine the solution to 0.5^x+4 ≤ 2. He first graphs 0.5^x+4-2 ≤ y as shown. Joel then graphs y ≤ 2 on the same coordinate plane and claims that the solution set to 0.5^x+4 ≤ 2 is the interval [6, infinity), because the overlapping region matches this interval. which statement describes Joel's error?
Answer: the answer is A
Step-by-step explanation:
Just took the test
Answer:
It's A
Step-by-step explanation:
Just took the test
If the nth term of a number sequence is 2n + n,
find the first 3 terms and
the 10th term.
Answer:
1st 3
2nd 6
3rd 9
10th 22
Step-by-step explanation:
1st 2(1) +1 = 3
2nd 2(2) + 2 =6
3rd 2(3) + 3 = 9
10th. 2(10) + 10 = 22
I think this is how you solve it
What quadrant is the point (-4, 3)? So I could at least get 10 points
Answer:
Step-by-step explanation:
quadrant 2 ( or if its asking for a letter B)
convert 6/8 to a decimal and explain how you got the answer
Answer:
0.65
Step-by-step explanation:
6/8 is the same thing as 3/4, and 3/4 is equal to 0.75
Hope this helps :D
the concentration of the substance outside the cell and C2 represents the concentration of the substance
inside the cell.
a) Rewrite the formula as a single logarithm.
b) Find the energy needed to transport the exterior substance into the cell if the concentration.
of the substance outside the cell is double the concentration inside the cell.
c) What is the sign of E if C1 < Cz? Explain what this means in terms of the cell.
Is this math? I'm sorry I don't get what formula I'm supposed to rewrite or -
A botanist planted 40 seeds and 32 sprouted. What percent of the seeds planted did NOT sprout?
Answer:
20%
Step-by-step explanation:
The square of the sum of
8 and 7 is
Answer:
225
Step-by-step explanation:
8+7=15
15*15=225
Answer:
225
Step-by-step explanation:
The square of the sum of 8 and 7 is;
8+7
=15
So square of 15 is
15×15
=225
What’s (-6 - 4) divided by (-5)
Answer:
in fraction form is 6/20 in decimal form its 0.3
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
(-6 - 4) ÷ -5 = 2
Which equation could be used to solve this problem?
In 14 years, Miguel will be 40. Let m represent Miguel's current age. How old is he now?
m = 40 + 14
m- 14 = 40
m + 40 = 14
m + 14 = 40
Answer:
m+14=40
Step-by-step explanation:
Answer:
the answer is m+ 14 = 40Step-by-step explanation:
Answer is D
Which statement about 5(1 + 3x) is true?
A. 5(1 + 3x) is a quotient.
B. 5(1 + 3x) has two variables.
C. 5(1 + 3x) has one variable.
D. 5(1 + 3x) is a product of three factors.
well well here it has only one variable that is x
hence option c is correct
Answer:
it is c since it only has one variable
Name the constant(s) in the expression 5y + 3 - 4y.
Answer:
When we look at the expression, 4x+3−2x−7, ... 3. What are the coefficients in the expression? 4. What are the constants in the expression? ... 8x−4y+2−3x−5x ? 1. Translate the ... Simplify the expression − 2x −5y− 4.
Step-by-step explanation:
Please help !!! Don’t understand this math problem
Answer:
31.4
Step-by-step explanation:
10 x 3.14 ( pi) =31.4in2
Please help me on this?!!!!
which expression is equivalent to the given polynomial expression?
(-4a^2 – 3b) + (-2ab – a^2 + b^2) + (-b^2+6ab)
Answer:
Plato answer!
-5a^2 +4ab - 3b
Step-by-step explanation:
The expression (–4a² – 3b) + (–2ab – a² + b²) + (–b² + 6ab) is equivalent to the expression (–5a² + 4ab – 3b). Then the correct option is D.
What is an equivalent expression?The equivalent is the expressions that are in different forms but are equal to the same value.
The polynomial expression are given below.
(–4a² – 3b) + (–2ab – a² + b²) + (–b² + 6ab)
On simplifying, we have
– 5a² + 4ab – 3b
Then the correct option is D.
The complete question is attached below.
More about the equivalent link is given below.
https://brainly.com/question/889935
#SPJ2
A survey found that 31% of all teens buy soda (pop) at least once each week. Seven teens are randomly selected. The random variable represents the number of teens who buy soda (pop) at least once each week. What is the value of n
Answer:
The value of n is 7.
Step-by-step explanation:
For each teen, there are only two possible outcomes. Either they buy soda at least once each week, or they do not. Since they were selected randomly, the teens are independent of each other, which means that we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
In the binomial distribution, we have that n is the size of the sample. In this question, seven teens are randomly selected, which means that the value of n is 7.
x + 2y = -6
Solve for y
Write the difference quotient f(x)= 6x-7
Answer: f=6x-7/x
Step-by-step explanation:
Please help me on this math homework.Its trigonometry identities.
Step-by-step explanation:
Both questions solved
i hope its very useful for u
a printing service charges a set up fee of 11.00 for each order and 10 cents more for each copy . the totsl cost, C (in dollars), for an order of x copies is given by the following . C= 11.00+ 0.10x
What is the total cost for an order of 20 copies ?
Answer:
$13.00
Step-by-step explanation:
First, you plug in your x value for copies into the equation C=11.00+0.10x to get a starting equation of x=11.00+0.10(20). Since 0.10 is equivalent to 1/10, it's easy to compute (1/10)(20)=2. You now have an equation of C=11.00+2.00 to get C=13.00. Therefore, the total cost for an order of 20 copies is 13 dollars (and 0 cents).
-3(5x-9) solve!!!!!!
Answer:
-15x+27
Step-by-step explanation:
-3 * 5x = -15x
-3 * -9 = 27
if a whale is at sea level and goes down 300 feet what is it at
Solve the system by substitution.
-2x + 7y = 15
бу = 3
Answer:
Step-by-step explanation:
-2x + 7(1/2) =15
-4x +7 =30
-4x =23
x=-23/4
