Answer:
Drinks = $1.5
Pizza = $10.50
Step-by-step explanation:
let d = drinks
p = pizza
p = 7d equation 1
2p + 8d = 33 equation 2
from equation 1, we know the price of one pizza, the price of two pizzas can be determined by multiplying by 2
2p = 7d x 2 = 14d eqn 3
Substitute for 2p in equation 2
14d + 8d = 33
22d = 33
Divide both sides of the equation by 22
d = $1.5
Substitute for d in equation 1
p = 1.5 x 7 = $10.5
y= tan(X-π/5) tìm tập xác định của hs
Answer:
?
Step-by-step explanation:
Find the slope for (10, 22) and (3, 14)
Answer:
slope: m=8/7
Step-by-step explanation:
Jordan started a new diet when he weighed 300 pounds. He lost an average of 5 pounds per week. Which of the following equations represents this situation?
two thirds of a number increased by five. write in algebraic expression
Answer:
[tex]\frac{2}{3}[/tex] n + 5
Step-by-step explanation:
let n be the number , then the algebraic expression is
[tex]\frac{2}{3}[/tex] n + 5
(10x-18) (8x+14) value of x
Answer: 80 x^3 - 4x^2- 252x
Step-by-step explanation:
Answer:
80^2 − 4 − 252
Step-by-step explanation:
in pic
(Credit: Symbolab)
(hope this helps can I pls have brainlist (crown)☺️)
What is the value of x in the triangle below?
ModuleTwoPostAs...
a
>> Q
3x
T
V
8x - 30
R
15
45
6
18
Answer:
d
Step-by-step explanation:
There were 350 apples on the tree in March. By September there were 420 apples on the tree.
What was the percentage of change of apples on the tree? Round your answer to the nearest
tenth. *
Answer:
Step-by-step explanation:
20%
Answer:
The correct answer is 20.0% increase.
Step-by-step explanation:
In this situation, you would need to find how to find the percentage of change.
Therefore, you will need to first use subtraction, division and then multiplication to justify your answer.
--
First, find out how much the original number increased by.
[tex]420-350=70[/tex]
Next, divide the 70 with the original number, which is 350.
[tex]7[/tex] ÷ [tex]350=0.2[/tex]
Finally, to turn your decimal into a whole number, multiply by 100.
[tex]0.2[/tex] × [tex]100=20[/tex]
--
Remember to add the percent (%) symbol after receiving your final product.
20%
Evaluate 3p - 59 for p =6 and q = 4.
My answer:
−p2−4q+r2 =−(−5)2−4(4)+(−10)2 .
Solve 5x + 14 = k for x
Answer:
[tex]x = \frac{k - 14}{5} \\ [/tex]
Step-by-step explanation:
[tex]5x + 14 = k \\ 5x = k - 14 \\ x = \frac{k - 14}{5} \\ [/tex]
find f^-1(x) where
f(x)=3x+2/x
Answer:
x = -3y + 2
-3y = x - 2
f^-1(x) = y = -(x-2)/3
Step-by-step explanation:
The inverse here is just straight line so it is a function
please answer i will give a thanks!
Answer:
21cm^2
Step-by-step explanation:
Formula for area of triangle = (base x height) / 2
in this triangle: base = 7 Height = 6
= (7 x 6) / 2
= 42 /2
= 21cm^2
Greg drives at 50 mph for 2 hours.
How far did he drive?
O 20 mi
O 75 mi
0 125 mi
O 150 mi
Answer:
125 mi po Hindi kopo sure
please help me someone
A salon offers three services–manicures, massages, and hair styling. Five clients
come in for all three services. Forty clients come in for both hair styling and
manicures. Thirty-five clients come in for both manicures and massages. Fifteen
clients come in for both hair styling and massages. Ten clients come
in only for massages. Five clients only come in for hair styling and only two
clients come in for just manicures. How many total clients are represented by
the data?
Answer:
Well... The data represents 97 clients.
Step-by-step explanation:
I also included a picture to explain.
Match each expression on the left to the equivalent decimal.
4.6
5.6
5.7
6.7
2.63 + 3.07
9.4 - 4.8
3.92 + 1.68
8.5 - 1.8
Answer:
1. 5.7
2. 4.6
3. 5.6
4. 6.7
Step-by-step explanation:
Dr. Reyes is examining whether exercise is linked to mood. She recruits a sample of college students and asks them to answer whether they exercised at least three times last week (yes or no) and to rate their mood in the last week (1: Not happy at all to 5: Very happy). Her results show that students who exercised in the last week also reported happier moods. Can Dr. Reyes make a causal inference from her study
The answer to whether Dr. Reyes can make a causal inference from the study is;
No, she can't make a casual inference from the study because she met only one of the three criteria's for causality.
To answer this question, we need to know the conditions for causality in statistics research because causality gives the relationships such that a change in one variable would have to result in a change in another variable.
Now, the three conditions are;
1) Covariation; This condition means that the causal variable must have to vary with with the variable it is assumed to cause in a systematic manner.
2) Temporal precedence; Thus condition simply means that cause must precede effect. In summary it denotes that the variable that has the causal effect must come before the effect that it is meant to cause.
3) Control for extraneous variables; This condition means that results of an experiment or research must not be due to factors outside of the experiment/research
Now, in our question, he fulfilled the covariation condition because the
result of the research is tied to the responses from the sample students.
However, she did not fulfill the temporal precedence because the cause of
their moods did not precede the effects in his research.
Also, she did not fulfill the condition of control of extraneous variables
because other factors outside of the research itself may have affected their
moods.
Read more at; https://brainly.com/question/10811163
Helppppppppppppppppppppppppppppppppppppppppp pls
Answer:
Coffee Beans to Go is cheaper, selling coffee at $4.75 per pound.
Step-by-step explanation:
The graph is cruddy and hard to see but! when you go to 2 pounds and then up the the cost, it's $9.50. 9.50/2= 4.75. kapeesh??
the difference of a number and its absolute value.
Answer:
he sum of the first number and the square of the second number is 18. The difference between the square of the second number and twice the first number is 12.
I know the first set of equations would be x+y2=18 and y2−2x=12, and we can get x=2 and y=2 or y=−2.
My question is about how to understand difference when making equations. I know it means subtraction but would you ever use absolute values when making the equation?
For example, if I said the difference between a number x and 7 is 3, then wouldn't there be two answers? I would think of it as |x−7|=3 and then we could get two answers: x=10 and x=4. My rationale is that on the number line, the distance between either of my x values and 7 is 3.
In the quoted question I began with, then I could get the numbers of x=10 and y=22–√ or y=−22–√ but that's only if I did |y2−2x=12| and I don't feel that's right.
Step-by-step explanation:
A store is advertising that it offers a 14% discount had on everything purchased at the store. When Aiza (آئزہ) had paid $670.80 for her purchase, what was the originally marked price for her item (or items) in dollars?
A. 780
B. 1284.50
C. 701.60
D. 1089.00
Answer:
780
Step-by-step explanation:
Help I need this pls provide expnation too thx
the population of london city is 11400. write this in scientific notation
Answer:
1.14 x 10x4
Step-by-step explanation:
thats is correct i just did the test
Scarlett stopped at a campground along the Appalachian trail. The campground had a 1 2 acre area for tents, divided into 6 equal campsites. Scarlett picked one of the sections to pitch her tent. Which expression would give you the size of Scarlett’s campsite? Check all that apply.
Answer:
A and D 1/2 divided by 6 and 6/12 divided by 6
Step-by-step explanation:
I just took the assignment
Write an equation of the line that passes through the point (4, –5) with slope 2.
Answer:
y + 5 = 2(x−4)
Step-by-step explanation:
slope = 2
y = mx + b
-5 = 2(4) + b
-5 = 8 + b
-8 -8
------------------
-13 = b
y = 2x - 13, in other words --> y + 5 = 2(x−4)
So, y + 5 = 2(x − 4) is the equation of the line that passes through (4, -5).
Answer:
y + 5 = 2(x−4)
Step-by-step explanation:
y = mx + b
-5 = 2(4) + b
-5 = 8 + b
subtract 8 on both sides
-13 = b
In today’s lesson you voted a sheet of paper multiple times. Identify the rectangles that were scaled copies of your original rectangle sheet of paper. Use the image to help.
The monthly utility bills in a city have a mean of $70 and a standard deviation of $8. Find the s-scores that correspond to utility bills of $60, $71 and $9. What can you conclude
Z-Score for:
$60:
$71:
$92:
92 because I'm really good at math
The z-scores of the monthly utility bills for the value of x as $60, $71 and $9 are -1.25, 0.125, and 2.25 respectively.
What is Z-score?A Z-score helps us to understand how far is the data from the mean. It is a measure of how many times the data is above or below the mean. It is given by the formula,
[tex]Z = \dfrac{X- \mu}{\sigma}[/tex]
Where Z is the Z-score,
X is the data point,
μ is the mean and σ is the standard variable.
As it is given that the standard deviation of the monthly utility bills is $8, while the mean is $70. Therefore, the z-score can be written as,
A.) X= 60
[tex]Z = \dfrac{X- \mu}{\sigma}=\dfrac{60- 70}{8} = -1.25[/tex]
B.) X = 71
[tex]Z = \dfrac{X- \mu}{\sigma} = \dfrac{71- 70}{8}=0.125[/tex]
C.) X = 92
[tex]Z = \dfrac{X- \mu}{\sigma}= \dfrac{92- 70}{8}=2.25[/tex]
Hence, the z-scores of the monthly utility bills for the value of x as $60, $71 and $9 are -1.25, 0.125, and 2.25 respectively.
Learn more about Z-score:
https://brainly.com/question/13299273
Choose the best answer to classify the following number as Rational, Irrational, a Natural Number, or not a Real Number: 0/7
Answer:
a natural number
Step-by-step explanation:
0/7=0
and then '0' is included in natural numbers from, 0,1,2,3,4,.........
You saved $500 this year. Each year you plan to save 5% more than the previous year. How much do you expect to save after 8 more years?
A. $738.73
B. $5513.28
C. $5013.28
D. $5788.95
Answer:
1st year
50hdnjxwmmwdbbd
djjrjeuie
Answer:
a. 738.73
Step-by-step explanation:
hope that’s righttt.
What I did was 500x0.05 and with the answer I did x0.5 again and added it to the previous year until the 8th time each was 738.73 correct me if I’m wrong
edit so it’s wrong….not sure what I did wrong
Please, help me in this!
When solved for x, which inequality represents the number line?
A) 12x − 8 > 8 + 4x
B) 12x − 8 > 8 − 4x
C) 12x + 8 > 8 + 4x
D) 12x + 8 > 8 − 4x
I think its C, i could be wrong but im pretty sure its C
solve 4(a-3) = 22
solve 5(x -6) = 65
with explanation, please
giving 20 points
Step-by-step explanation:
4(a-3)=22
a-3=4-22
a-3=18
a=18+3
a=21
5(x-6)=65
x-6=65-5
x-6=60
×=60+6
x=66
hope it will help u...............
Answer:
a = [tex]\frac{34}{4}[/tex]
x = 19
Step-by-step explanation:
First equation
Expand the brackets
4(a-3) = 22
4a - 12 = 22
Add 12 to both sides
4a - 12 + 12 = 22 + 12
4a = 34
Divide both sides by 4
4a ÷ 4 = [tex]\frac{34}{4}[/tex]
a = [tex]\frac{34}{4}[/tex]
Second equation
Expand the brackets
5(x - 6) = 65
5x - 30 = 65
Add 30 to both sides
5x - 30 + 30 = 65 + 30
5x = 95
Divide both sides by 5:
5x ÷ 5 = 95 ÷ 5
x = 19
Hope this helps!