A waitress sold ribeye steak dinners and grilled salmon dinners, totaling $ on a particular day. Another day she sold ribeye steak dinners and grilled salmon dinners, totaling $. How much did each type of dinner cost?
Answers
Answer:
ribeye steak: $24.37grilled salmon: $9.30Step-by-step explanation:
If we let r and g represent the costs of a ribeye steak dinner and grilled salmon dinner, respectively, the sales figures give rise to two equations.
17r +15g = 553.74
22r +5g = 582.65
If we multiply the second equation by 3 and subtract the first, we have ...
3(22r +5g) -(17r +15g) = 3(582.65) -(553.74)
49r = 1194.21
r = 1194.21/49 ≈ 24.37
g = (553.74 -17r)/15 ≈ 9.30
The steak dinner costs $24.37; the salmon dinner costs $9.30.
_____
Check
17(24.37) +15(9.30) = 553.79 . . . not 553.74
22(24.37) +5(9.30) = 582.64 . . . not 582.65
There is no exact solution to this problem.
Answer:
R=cost of rib-eye dinner; S=cost of salmon dinner
24R+10S=$580.66
10S=$580.66-24R
20S=$1161.32-48R Use this to substitute for 20S below
17R+20S=$590.81 . Substitute for 20S.
17R+($1161.32-48R)=$590.81
-31R=-$570.51
R=$18.40
ANSWER 1: Rib-eye dinner costs $18.40.
Step-by-step explanation:
24R+10S=$580.66
24($18.40)+10S=$580.66
$441.60+10S=$580.66 441.69
10S=$139.06
S=$13.91
ANSWER 2: A salmon dinner costs $13.91.
CHECK:
17R+20S=$590.81
17($18.40)+20($13.91)=$590.81
Related Questions
Al bought two model planes(p) for $7.95 each and some stickers(s).What is the equation of the total spent? and What was the cost of the stickers if the total spent was $24.65?
Answers
Answer:
First off you have to start with what you know. You know the two planes cost 7.95 and you know the total is 24.65
Then to find the price of the stickers you subtract the 7.95 from 24.65=16.70
So your equation to start is
7.95+x=24.65
Subtract 7.95 from both sides
x=16.7-
Hope this helps and good luck
Step-by-step explanation:
What is the value of x?
Answers
Answer:
12
Step-by-step explanation:
As we can see in the picture, the bigger pentagon is a scale copy of the smaller one with a scale factor of 2. Hence, all the sides on the smaller pentagon multiplied by 2 gives us the bigger pentagon. We can find the scale factor by looking at the biggest side of the pentagon. Hope this helped, Thank you.
can someone please help me with this
Isaiah earned a score of 61 on Exam A that had a mean of 78 and a standard deviation of 10. He is about to take Exam B that has a mean of 200 and a standard deviation of 50. How well must Isaiah score on Exam B in order to do equivalently well as he did on Exam A? Assume that scores on each exam are normally distributed.
Answers
10. Shawna's Bikesrents bikes for $20 plus $4
per hour. Jaidee paid $52 to rent a bike. For how
many hours did she rent the bike?
Answers
Answer:
she rented to bike for 8 hours
Step-by-step explanation:
52-20=32
32/4=8
A seven-year medical research study reported that women whose mothers took the drug DES during pregnancy were twice as likely to develop tissue abnormalities that might lead to cancer as were women whose mothers did not take the drug. a. This study compared two populations. What were the populations? b. Do you suppose the data were obtained in a survey or an experiment? c. For the population of women whose mothers took the drug DES during pregnancy, a sample of 3980 women showed that 63 developed tissue abnormalities that might lead to cancer. Provide a descriptive statistic that could be used to estimate the number of women out of 1000 in this population who have tissue abnormalities.
Answers
Answer:
The classification of the set of circumstances is presented in the following subsections of the understanding.
Step-by-step explanation:
A 7-year health research project revealed that individuals for whom the mom took DES throughout pregnancy seem to have been twice as probable as women for whom the mothers didn't use the medication to establish tissue irregularities that could cause cancer.
(a)
Women with whom the mothers have taken DES throughout pregnancy as well as women where its mothers haven't taken DES during pregnancy.
(b)
The information collected seems to have been a sample or survey.
(c)
A sampling unit of 3980 (women) showed that performance 63 industrialized tissue irregularities that could contribute to disease (cancer) in the proportion of females with whom the mom brought the powerful DES all through pregnancy.
The proportion of abnormalities in tissues established by females does seem to be:
= [tex]\frac{63}{3980}[/tex]
= [tex]0.015829[/tex]
Of every thousand women, 15.8 established tissue abnormalities.
What does the ordered pair (5, 110) represent in the context of this problem?
Answers
Answer:
A. (1,22), (2,44), (3,66)
B. 5 shirts were bought and the total was $110
C. 4
Step-by-step explanation:
A.
For every 1 increase in the x variable(the first number) the y variable(the second number) increases by 22
B.
The pair represents that he got 5 shirts and that he paid $110. you can check your work by seeing that if yoiu divide 110 by 5 you get the price of the t-shirt; $22
C.
If each shirt is $22 you divide $88 by $22 and get the amount of t-shirts bought; 4
Which rate can you set 7 miles/ 1 hour equal to in order to find the distance traveled in 49 hours at 7 miles per hour?
7 hours/ ? miles
49 hours/ ?miles
? miles/ 7 hours
? miles/ 49 hours
Answers
Simplify
1/4 + 4(1/2 - 3/4)^2
Answers
I hope this can help you
One size of pizza served at Joe’s Pizza Parlor is 10in. in diameter. What is the area of this particular (circular) size pizza? (Pie=3.14)
Answers
Answer:
78.5 in.²
Explanation:
Formula For Area Of Circle: Area = πr²
π: 3.14
r (Half Of Diameter): 5
r²: 25
3.14 · 25 = 78.5
When factored, the trinomials x2 + 4x − 21 and x2 + 11x + 28 have one binomial factor in common. What is this factor?
x − 7
x + 7
x − 5
x + 5
Answers
Answer:
x + 7
Step-by-step explanation:
x2 + 4x − 21
set equal to 0
x2 + 4x − 21 = 0
factor
(x - 3) (x + 7)
x2 + 11x + 28
set equal to 0
x2 + 11x + 28 = 0
factor
(x + 4) (x + 7)
Jessica had 105 dollars to spend on 8
books. After buying them she had 17
dollars. How much did each book cost ?
Use b to represent your unknown
variable.
Answers
Answer:
each book cost 11 dollars
Step-by-step explanation:
If she had 17 dollars left at the end, subtract that from the total amount she had. 105-17= 88. Then youdevide 88 by 8 (because she got 8 books) and yu get 11
'y
6-1, 5)
10
x
10
-2
-2
Which is the equation of the given line in slope-intercept form?
Answers
Answer10x
Step-by-step explanation:
Answer:
can you include a picture of the question
Identify the number as real, complex, pure imaginary, or nonreal complex.
- 169
Answers
Answer:
real
Step-by-step explanation:
-169 is a negative integer and integers are real numbers
Answer:
real
Step-by-step explanation:
35-40 first with the correct answers will get brainliest
Answers
Answer:
35.w/g=m
36. P=1/2Q-15
37. R=IV
38. b=-mx+y
39. a) t=-d-e+f
b) t=19.175
40. No, X=-2.4
Step-by-step explanation:
Explanation for 40:
2(x-4)-4x=-6x+9x+4
first do the parentheses
2x-8-4x=-6x+9x+4
next combine like terms
-2x-8=3x+4
add 2x to each side
-8=5x+4
subtract 4 from each side
-12=5x
divide both sides by 5
x=-2.4
There are 5 times as many yellow labs as terriers in the dog park. A total of 18 dogs. How may more terriers
Answers
Answer:
There are 3 terriers
Step-by-step explanation:
3 terriers * 5 = 15 yellow labs
15 yellow labs + 3 terriers = 18 dogs
Help out on geometry class!!
Answers
Answer:
m∠1 = 25°
Step-by-step explanation:
Sum of Angles in a triangle: 180°
Degree of measure of a line: 180°
Step 1: Find missing angle ∠2
m∠2 + 104 = 180
m∠2 = 76°
Step 2: Find missing angle ∠1
m∠1 + m∠2 + 79 = 180
m∠1 + 76 + 79 = 180
m∠1 + 155 = 180
m∠1 = 25°
If 10% of xis 20, what is 23% of X?
Answers
Answer:
46%
Step-by-step explanation:
Answer:
46%
Step-by-step explanation:
Hope it helps
if it does make me the brainliest pls
hellppp I have to do estimate
Answers
Drag the labels to the correct locations. Each label can be used more than once, but not all labels will be used. Let’s look back at the same quadratic functions you saw in the Warm-Up at the beginning of this lesson. Use what you learned about the fundamental theorem of algebra to determine the number of real and complex roots each function has. two distinct real rootsone repeated real rootone real root and one complex roottwo complex roots
Answers
Answer:
Graph A: two distinct roots. Graph B: one repeated real root. Graph C: two complex roots. Graph D: two distinct real roots.
Step-by-step explanation:
Explanation:
Each graph represents a quadratic function. So by the fundamental theorem of algebra, we know that each graph will have two roots.
Graph A crosses the x-axis twice. So, graph A has two distinct real roots.
Graph B touches the x-axis once. A quadratic cannot have one real root and one complex root. So it must have one repeated real root.
Graph C doesn’t cross the x-axis. This means it must have two complex roots.
Graph D crosses the x-axis twice. So, graph D has two distinct real roots.
3. What is the value of |—9|?
A. 18
B. 9
C. 0
D. -9
Answers
Answer:
B) 9
Step-by-step explanation:
The answer s 9 because the absolute value symbols in the question mean the distance away from 0. In this case, -9 is 9 away from 0 so the answer is 9.
hope this helped!
For the data shown in the scatter plot, which is the best estimate of r? A. 0.95 B. −0.55 C. 0.55 D. −0.95
Answers
Answer:
C. 0.55
Step-by-step explanation:
The scatter plot shows that there is a positive correlation between variable x and variable y. This is because, the x and y variable seem to follow the same trend. That is, as x variable increases, y variable also increases. If a line of best fit is drawn, it would slope upwards, from left to our right.
Correlation coefficient (r) of any given data set plotted on a scatter plot, ranges from -1 to 1. The closer the value of "r" to either -1 or 1, the more clustered the data points are together in a line of best fit in a scatter plot.
Therefore, since the scatter plot given shows a positive relation between the x and y variables, whereby the data points seem to be less clustered and farther from each away from the line if best fit, if drawn, an estimate of "r" would not be closer to the value of 1.
Therefore, from the options given, C. 0.55 is the best estimate for r for the data shown in the scatter plot.
Answer:
0.55
explanation:
slope intercept of (5,-6) and (2,-8)
Answers
Use this formula:
slope = (y₂ - y₁) / (x₂ - x₁)
= (-8 - (-6)) / (2 - 5)
= (-2) / (-3)
= 2/3
The wholesale price of a sweater is $35. The retail price of the sweater is 10% more than the wholesale price. What is the retail price of the sweater?
Answers
Answer:
$38.50
Step-by-step explanation:
35/10 =3.5
35+3.5=38.5=$38.50
can you please give me a short brief answer
Answers
Answer:
120 yards 1.
Step-by-step explanation:
In the shape, it is a rectangle with a triangle cut out from it. What is the area of the shape:
Area of rectangle = length × width
12 × 15 = 180 yards²
Area of triangle = ½ × base × height
½ × 10 × 12 = 60 yards²
Now subtract the area of triangle from the area of rectangle:
180 - 60 = 120 yards ²
After a rotation, A(–3, 4) maps to A'(4, 3), B(4, –5) maps to B'(–5, –4), and C(1, 6) maps to C'(6, –1). Which rule describes the rotation? R0, 90° R0, 180° R0, 270° R0, 360°
Answers
Answer: R0, 270°
Step-by-step explanation: i have the answers to all the quetions
on the quiz/ assignments you doing. i can send u the l i n k if u want.
Answer:
R0, 270 is the correct Answer!
Step-by-step explanation:
Hope this helps =)
If an aircraft is present in a certain area, a radar correctly registers its presence with probability 0.99. if it is not present, the radar falsely registers an aircraft presence with probability 0.10. we assume that an aircraft is present with probability 0.05. what is the probability of false alarm (a false indication of aircraft presence), and the probability of missed detection (notng registers, even though an aircraft is present)? what is the probability that an aircraft is present given that the radar registers a presence?
Answers
Answer:
A) 0.005
B) 0.001
C)0.0495
Step-by-step explanation:
Let A be the event that an aircraft is present and let B be the event the radar registers its presence.. Thus;
P(A) = Probability that an aircraft is present
P(A') = Probability that an aircraft is not present
P(B) = Probability that the radar generates an alarm
P(B') = Probability that the radar doesn't generate an alarm
Thus from what we are given, we have;
P(A) = 0.05
P(A') = 0.95
P(B) = 0.99
P(B') = 0.01
P(B|A') = 0.1
A) Probability of a false alarm will be;
P(A' ∩ B) = P(A) × P(B|A')
P(A' ∩ B) = 0.05 × 0.1 = 0.005
B) probability of missed detection is;
0.1 × (1 - 0.99) = 0.001
C) probability that an aircraft is present given that the radar registers a presence will be;
P(A ∩ B) = P(A) × P(B)
P(A ∩ B) = 0.05 × 0.99
P(A ∩ B) = 0.0495
Which conversion involves multiplying by a positive power of 10 select all that apply
Answers
Answer:
A, C, D
Explanation:
If you are converting a larger unit to a smaller unit you multiply, if you are converting a smaller to larger, you divide.
Answer:
A,C,D
HOPE THIS HELPS IT SURE DID HELP ME WAIT I KNEW THE ANSWER ANY WAY NVM IGNORE THAT PLZ STAR TO SEE IF IT WAS RIGHT AND IF IT HELPED YOU.
sorry for the caps lock it was on when I was typing:)
LOL
Classify the polynomial 2x3 + 6x2 - 4 by the number of terms.
cubic
quadratic
binomial
trinomial
Answers
Answer:
cubic
Step-by-step explanation:
the highest degree is 3, so therefore it is cubic.
Answer:
Trinomial
Step-by-step explanation:
The coordinates of quadrilateral ABCD are
A(1,3), B(7,5), C(3,2) and D(-3,-1).
a) Do the diagonals bisect each other?
Choose:
Yes
Ο No
b) What is the midpoint of the longer
diagonal?
Choose
(2,2) (5,2) (2,1)
(5,1)
Find the shortest distance between the points
(-5,-3) and (2,-4).
Choose
OVIO
o 49
V50
0 58
The point (7,2) lies on a circle. What is the length of
the radius of the circle if the center is located at
(2,1)?
Choose
26 34 82 190
Answers
Answer:
no
Step-by-step explanation:
blah blah blah balh blah
60 inches of plastic are folded to make a picture frame. The height of the finished frame is 6 inches. How long is the frame?
Answers
Step-by-step explanation:
This is a perimeter problem
P=2l+2w
60=2(6)+2w
-12 -12
48=2w
W=24inches
HOPE IT WILL HELP YOU
