Answers
Answer:
b=3, y=6
Step-by-step explanation:
Label the 2 equations:
2b +6y= 42 -----(1)
2b +4y= 30 -----(2)
(1) -(2):
(2b +6y) -(2b +4y)= 42 -30
2b +6y -2b -4y= 12
2y= 12
y= 12 ÷2 (÷2 on both sides)
y= 6
Susbt. y=6 into (2):
2b +4(6)= 30
2b +24=30
2b= 30 -24 (-24 on both sides)
2b= 6
b= 6 ÷2
b= 3
Answer:
y = 6, b = 3
Step-by-step explanation:
Since both equations have 2b in them, subtracting them gets you a quick result because the 2b-2b cancels out!
2b + 6y = 42
2b + 4y = 30
------------------ -
2y = 12
y = 6
Then 2b = 42 - 36 = 6, so b = 6/2 = 3
Related Questions
I just need the value of each hand
Answers
Answer: partner’s hand -1
your hand -3
I think this is right
Step-by-step explanation:
3. Marjorie made 4 wreaths in 6
hours and 6 wreaths in 9 hours.
What is the constant of
proportionality?
13
k=2
k = 2/3
k = 3/2
k= 3
Answers
Answer:
The constant of proportionality is k = [tex]\frac{2}{3}[/tex] ⇒ B
Step-by-step explanation:
The form of the equation of the proportionality is y = k x, where
k is the constant of proportionality∵ Marjorie made 4 wreaths in 6 hours
→ Let y the number of wreath and x is the time of making them
∵ y = k x
∵ y = 4 and x = 6
→ Substitute them in the equation
∴ 4 = k(6)
∴ 4 = 6k
→ Divide both sides by 6 to find k
∵ [tex]\frac{4}{6}[/tex] = [tex]\frac{6k}{6}[/tex]
∴ [tex]\frac{2}{3}[/tex] = k
Let us use the other information to be sure it will give us the same value of k
∵ She made 6 wreaths in 9 hours
∴ y = 6 and x = 9
→ Substitute them in the equation
∵ 6 = k(9)
∴ 6 = 9k
→ Divide both sides by 9 to find k
∵ [tex]\frac{6}{9}[/tex] = [tex]\frac{9k}{9}[/tex]
∴ [tex]\frac{2}{3}[/tex] = k
∴ The constant of proportionality is k = [tex]\frac{2}{3}[/tex]
Mary draws the number line below to represent the solution set of the inequality 50 – 8t < 90. What mistake did Mary make? Use the drop-down menus to explain your answer.
Answers
Picture relating to question is attached below
Answer:
t > - 5
Line is in the wrong side
Step-by-step explanation:
Given the inequality :
50 – 8t < 90
-8t < 90 - 50
-8t < 40
-8t / - 8 < (40/ - 8)
t > - 5 (sign changes)
During simplification, we should observe that the inequality sign changes due to negative sign. Hence, our final inequality equation read t > - 5 ; thus, arrow should point to the right
Step-by-step explanation:
this is the equation: 9.50 + 3.75e < 25
work out a & e
will mark brainlest
Answers
Answer:
a = 14
b = 15
c = 15
d = 18
e = 18
Step-by-step explanation:
The stratified sampling works as follows:
stratified sampling = (Population of subgroups)*(total sample size)/(entire population)
in this case, sample size = 80
entire population = 140 + 150 + 150 + 180 + 180 = 800
Population sample is the number of students of each year (for year 7, the population of subgroup is 140, and so on)
whith this equation we can find all the missing values:
a = (140)*(80/800) = 14
b = (150)*(80/800) = 15
c = (150)*(80/800) = 15
d = (180)*(80/800) = 18
e = (180)*(80/800) = 18
A salesperson earns a 12.5% commission on every car sold. The salesperson sold a car for $17,500. What is the commission earned from the sale? Round your answer to the nearest cent.
Answers
A n s w e r:
$2187.50
16/9 Write as a decimal. If necessary, use a bar to indicate which digit or group of digits repeats.
Answers
Answer:
1.7777 (use the bar on top of 7)
Step-by-step explanation:
top in bottom out
16 goes into 9 one times
12 n - 49, when n = 3
Answers
Answer:
-13
Step-by-step explanation:
First subsitute 3 for n
12(3)-49 multiply 3 with 12
26-49 subtract
-13
12x3=36
36-49=-13
Spend $1.85 & pay with a
$10.00 bill & you get $8.15 in
change. The digits in the
change are the same as the
digits in what you spent. Can
you find other amounts that
work this way?
Answers
can anyone help me in this ???? and tysm !!!
Answers
Answer:
The answer to the question provided is 38.
How to solve 2 (3x + 2) = 22
Answers
Answer:
x = 3
Step-by-step explanation:
[tex]2(3x+2)=22\\\\6x+4=22\\\\6x+4-4=22-4\\\\6x=18\\\\\frac{6x=18}{6}\\\\\boxed{x=3}[/tex]
Hope this helps.
Which is a root of the equation x2 + 6x + 8 = 0?
Answers
Answer:
4 and 2
Step-by-step explanation:
what the meaning of (5,25) explain
Answers
(5,25)
is when x=5 and y=25
I think (5,25) is a point on a graph. You didn’t give enough information about your question so I don’t really understand it
What is the answer???
Answers
Answer:
it is a 90 degree angle
Step-by-step explanation:
because the little square in the corner
Simplify: 4(36)?????
Answers
Answer:
To reduce this fraction, simply divide the numerator and denominator by 4 (the GCF). So, 436 = 4÷436÷4 = 19. Thus, 436 is equivalent to 19 in the reduced form.
Step-by-step explanation:
The solution for the expression 4(36) after you simplify can be expressed as 144.
What is 4(36) when you simplify?To simplify the expression 4(36), we need to perform the multiplication operation.
4 multiplied by 36 can be calculated as follows:
4 x 6 = 24 (multiplying the units digit)
4 x 30 = 120 (multiplying the tens digit)
Now, we add the results together:
24 + 120 = 144
Therefore, the number 4 multiplied by the number 36in brackets is equals to 144.
Read more about how to simplify here: https://brainly.com/question/6979644
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how do i find the missing value of “?”
Answers
Multiply the mean of 73 by 5 (numbers you have).
Add the numbers you are given.
Subtract the sum you have from the total sum to find your missing number.
PLEASE URGENT (quadratic formula with step by step) 35 points!
Answers
Answer: 1.828 HOPEFULLY ITS RIGHT.
Step-by-step explanation:
A restaurant is offering a dinner special that includes one starter and one entree. The choices are listed below.
Starter: breadsticks, soup, salad
Entree: beef, fish, chicken, shrimp, pork
How many possible dinner special combinations are there?
5
8
10
15
Answers
Answer: i think that the answer is 10
plz give me some points
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
:)
If Karen finished watching a movie at 1:10 pm, and it lasted 1 hour 38 minutes, then what time did she start the movie
Answers
Answer:
11.32pm
Step-by-step explanation:
1.10pm - 1hr = 12.10pm
12.10pm - 38min = 11.32pm
Answer:
1:38 minus and hour which is 12:38now minus 38 minutes from an hour is 22 so the answer is 12:22
priya bought x grams of flour Clara bought 3/8 more than that select all questions that represent the relationship between the amount of flour prior bought x and the amount of flour Clara bought is y
a. y = 3/7 c
b. y = 5/8 x
c.y = x + 3/8 x
d. y= x - 3/8 x
e. y = 11/8 x
Answers
Answer:
Option C : [tex]x+\frac{3}{8}x[/tex] is the correct answer.
Step-by-step explanation:
Given that:
Quantity of flour bought by Priya = x grams
Quantity of flour bought by Clara = 3/8 more than that
It means that Clara bought the amount bought by Priya plus an additional 3/8 of flour that was bought by Priya
Total bought = y
y = x + [tex]\frac{3}{8}x[/tex]
Hence,
Option C : [tex]x+\frac{3}{8}x[/tex] is the correct answer.
Which of the following completed this proportion?
Answers
Answer:
PS
Step-by-step explanation:
PS because is is on the same side as PQ on the right figure.
Answer: PS
Step-by-step explanation: the corespondent side to HL is PS
The panthers lost 6 yards on their first play and lost another 8 yards on their next play. What was their net result in yards after these two plays?
Answers
my badd i didnt read the whole question it would be negative 14
The temperature on a Monday evening was 8 °F. Tuesday evening it was
expected to drop 12 F. Write and evaluate a subtraction expression find
the expected temperature on Tuesday evening.
Answers
Answer:
it would be -4 Degrees F
Step-by-step explanation:
8 -12 = -4
Mary has 200ml of hand sanitizer that is 15% alcohol she mixes it with 200ml of a hand sanitizer that is x% alcohol how many ml is in the second hand sanitizer?
Answers
Answer:
2x
Step-by-step explanation:
ok so basically..
x/100 * 200
200x/100
then you cross out the zeros and you get 2x.
Hope this Helped!! XD
alice ran 8 miles over the weekend . how many kilometers did she run? 1 mile = 1.6 kilometers
Answers
The Problem
which coordinate is a solution to the equation: 7x + 4y = 9?
a (4, -2)
b. (-33)
c. (3-3)
d. (-4,2)
Answers
Answer:
C. (3,-3)
Step-by-step explanation:
7 ( 4) + 4 (-2) = 9 false
7 ( -3) + 4 (3) = 9 false
7 ( 3) + 4 ( -3) = 9 true
7 ( -4) + 4 ( 2) = 9 false
36 students signed up to volunteer for a race two or three equal groups of students and each group had a different task how many students were in each group
Answers
Answer:
I two groups are formed: 18 students
If 3 groups are formed: 12 students
Step-by-step explanation:
We will answer this problem based on two occurrences:
1. The students chose to form only two groups:
If the students chose to form only two groups, the number of students in each group will be got by dividing the total number of students by 2. this will be 36/2 = 18. Therefore, there will be 18 students per group if only 2 groups were formed.
2. The students chose to form three groups:
If the students chose to form three groups, we will divide the total number of students by 3. this will be 36/3 = 12. Therefore, there will be 12 students per group if only 3 groups were formed.
complete it (picture)
Answers
11+(-11)=0
-7+7=0
-3+3=0
And the additive inverse of (-1) is 1
Which expression is equivalent to
1
?
64
0 41 x 4-10
O 4-1 x 410
O 4
x 47
O 44 x 4-7
Answers
Answer:
D. 4^4 x 4^-7
Step-by-step explanation:
Option D is correct, 4⁴×4⁻⁷ is equivalent to the expression 1/64
What is Expression?An expression is combination of variables, numbers and operators.
The given expression is 1/64
One divided by sixty four
We need to find the expression which is equivalent to One divided by sixty four.
We know that 4×4×4 is 64
Which means 4³=64
4⁴×4⁻⁷ = 4⁻³
1/64 = 1/4³
= 4⁻³
So 4⁴×4⁻⁷ is equal to 1/64
Hence, Option D is correct, 4⁴×4⁻⁷ is equivalent to the expression 1/64
To learn more on Expressions click:
https://brainly.com/question/14083225
#SPJ7
help me and when you are done
have a blessed day god blesses you
Answers
Answer:
False
Step-by-step explanation:
The left side −28 does not equal to the right side 22 , which means that the given statement is false.
Carpet costs $21.95 per square yard and the padding to put under it costs $2.55 per square yard. Felix plans to install padding and carpet in the region shown in the figure. What is the total cost of the carpet and padding needed to exactly cover the room?
Answers
Answer:
735
Step-by-step explanation:
