Answer/Step-by-step explanation:
Q=number of quarters; D=number of dimes
Q+D=30
D=30-Q . Use this to substitute for D below
$0.10D+$0.25Q=$5.85 . Substitute for D from above.
$0.10(30-Q)+$0.25Q=$5.85
$3.00-$0.10Q+$0.25Q=$5.85
$0.15Q=$2.85
Q=19
ANSWER 1: There were 19 quarters.
D=30-Q=30-19=11
ANSWER 2: There were 11 dimes.
CHECK:
$0.10D+$0.25Q=$5.85
$0.10(11)+$0.25(19)=$5.85
$1.10+$4.75=$5.85
Use the Line Tool to graph the equation
3x - y = 9
Answer:
Step-by-step explanation:
pls help
Ron can run a mile in 12 minutes. It takes his
younger brother, Sam, 1.5 times longer to run a mile.
How long does it take Sam to run a mile?
Answer:
18 minutes to run a mile
Step-by-step explanation:
1.5 is equal to 150%. so given that you have 12 minutes you can do what is 150% to 12 so 100% of 12 is 12 and 50% of 12 is 6 and 6 + 12 is 18
Are these ratios equivalent?
25 words every 10 years
35 words every 14 years
A: Yes
B: No
wich one
Answer:
No
Step-by-step explanation:
if im wrong forgive me if im right please mark brainleast
Rosie is making a special green paint it contains 2/3 cups yellow paint 1/3 cups white paint 1 and 1/5 blue paint and 1/5 black paint what percentage of the green paint is blue
Answer:
50%
Step-by-step explanation:
total cups to make green paint: 36/15
total cups of blue paint in green paint: 18/15
18/15 is what % of 36/15
(18/15) ÷ (36/15) = x÷100
the above proportion can be simplified to be:
(6/5) ÷ (12/5) = x÷100
cross-multiply to get:
(12/5)x = 600/5
x = (600/5) · (5/12)
x = 50
Find y when x = 14, if y = -3 when x = 6. Please help..
Answer:
y = -7
Step-by-step explanation:
6 : -3
2 : -1
14 : -7
Answer:y=-28
Step-by-step explanation:
14 x 6 = 84
84/-3
=-28
Find the 22nd term of the arithmetic sequence whose common difference is d=3 and whose first term is a1=1
Answer:
64
Step-by-step explanation:
Un=a+(n-1)d
given that Un is the number of terms which we're looking for
Un=1+(22-1)3
Un=1+(21)3
Un=1+63
Un=64
Answer:
Step-by-step explanation:
a1=1 a2=4 for every one, you add a 3 so 3*21=63 63+1=64 and that's the answer
the line x+2y-3=0 and 4x+5y-9=0 intersect at m.Find the cordinates of m
Answer:
The coordinates of m are (1, 1).
Step-by-step explanation:
How would this type of question be solved?
Answer:
+ for positive
- for negative
Step-by-step explanation:
Answer:
Using positive, and negative. + 4 + & - 4 -
Step-by-step explanation:
How much times do you have to times by 3 to get to 83
13
A survey found that women heights are normally distributed with mean 63.6 in and standard deviation 2.5 in. A branch of military requires women heights to be between 58 in and 80 in
Answer:
See below:)
Step-by-step explanation:
a)
mean = 63.6 , s.d = 2.5. We need to compute Pr(58 <= X <= 80)
The corresponding z-values needed to be computed
z1 = (58 - 63.6)/2.5 = -2.24
z2 = (80 - 63.6)/2.5 = 6.56
Therefore, we get:
Pr(58 <= X <= 80) = Pr( (58 - 63.6)/2.5 <= Z <= (80-63.6)/2.5 ) = Pr(-2.24 <= Z <= 6.56)
= 1 - 0.0125 = 0.9875
98.75 % of the women meet the requirements,Hence not too many women are being denied the opportunity to join this branch of the millitary.
b)
z value for lower 1% = -2.3263
corresponding x value = 63.6 - (2.5X2.3263) = 57.78
Z value for upper 2% = 2.0537
corresponding x value = 63.6 + (2.5X2.0537) = 68.73
The new height requirements is between 57.78 and 68.73 inch
Children under 10 years and older people over 65 years receive a discount on movie tickets. Let x represent the age of a person who receives a discount. Which inequality represents the age of a child who receives a discount
Answer:
0< X<10
X>65
0<x<10 or X>65
Step-by-step explanation:
A bag contains 42 red, 45 green, 20 yellow, and 32 purple candies. You pick one candy at random. Find the probability it is purple or not red.
Answer: there is a 53.24 percent chance.
Step-by-step explanation: Add all of the candies and get 139. Then add 32 and 42 to get 74. Then subtract 74 from 139 and get 65. Finally, you find the percentage of 74/139 and get 53.24.
The point (4, 10) is in each scatterplot. In which one is it an outlier? On a graph, points (4, 10) and (6, 1) are outside of the cluster. On a graph, points are scattered. On a graph, point (2, 1) is outside of the cluster. On a graph, all points are within the cluster.
2,1 I think I hope this helps
Answer:
the answer is A :)
Step-by-step explanation:
i got it right on edge
Solve linear systems in 3 variables using elimination
x + y + 2z= -7
–5z = 25
3х - 3y -6z= 3
x = 1
y = 2
z= -5
i will fix it
it is wrong
what is 11.2 x 12? pls be fast
Answer:
134.4
Step-by-step explanation:
11.2 x 12 = 134.4
Hoped this helped.
PLEASE HEEELP !!
It’s is correct this problem ??
Answer:
Yes.
Step-by-step explanation:
Answer:
Correct :)
Step-by-step explanation:
The merchandise manager wants to compare the typical price of sneakers at all 3 stores, Which measure of center should she use to make the comparison.
(Picture below)
Answer:
Mean
Step-by-step explanation:
The mean is the most frequently used measure of central tendency because it uses all values in the data set to give you an average.
what is the value of ST?
R & U are the midpoints of TV & SV. By using mid point theorem..,
ST = 2 RU
y + 6 = 2 (y - 23)
y + 6 = 2y - 46
y - 2y = - 46 - 6
- y = -52.
=》 y = 52.
ST = y + 6 = 52 + 6 = 58
=》 ST = 58
_____
RainbowSalt2222 ☔
HELP What is the zero of the linear function graphed below?
Answer:
The graph of a linear function is a straight line. Graphically, where the line crosses the x -axis, is called a zero, or root. Algebraically, a zero is an x value at which the function of x is equal to 0 . Linear functions can have none, one, or infinitely many zeros.
Step-by-step explanation:
Seth runs 420 meters in 1 minute. what is his speed in mph?
In a certain chemical, the ratio of zinc to copper is 4 to 11. A jar of the chemical contains 550 grams
of copper. How many grams of zinc does it contain?
Answer:
Umm ask a tutor
Step-by-step explanation:
Brainlest if this helped
PLEASE I BEG OF YOU ANYONE PLEASE HELP ME I'LL GIVE 65 POINTS PLEASE HELP ME!!!!!!! JUST PLEASE, ONLY CORRECT ANSWERS AND IF YOU DO A GRAPH IT MUST MATCH THE NUMBERS AS THE ONE IN THE PICTURE BELOW
Answer:
Sure I'll try to help!
(-3.14, -5)
Step-by-step explanation:
if f(x) = 3x+2, what is f(5)
Answer:
f(5) = 17
Step-by-step explanation:
Function: f(x) = 3x + 2
x-value: 5
Equation: f(5) = 3(5) + 2
Solve:
f(5) = 3(5) + 2
f(5) = 15 + 2
f(5) = 17
Warning⚠Many people thin that something like f(x) means that you are multiplying f and x. This is incorrect.
f(x) = 3x + 2 is the same as y = 3x + 2, the f is the name of the function, and you replace a number, like 5, for the x - value.
-Chetan K
Olivia earned 24 out of 30 points on her chemistry exam. What percent of the points did Olivia earn.
Answer:
She earned 80% right
Step-by-step explanation:
You start by dividing the points earned by the total questions.
[tex] \frac{24}{30 } = .8[/tex]
then multiply by 100
[tex].8 \times 100 = 80[/tex]
then you add the percent symbol
[tex]80\%[/tex]
what fraction is equivalent to 33 1/3% in simplest form
Answer:
[tex]\frac{1}{3}[/tex]
Step-by-step explanation:
(33*3+1 )/3 = 100/3%
Then you need to convert that to decimal by dividing 100
100/300 = 0.3333
which is 1/3 in decimal form
Which equation represents fertilization?
haploid + diploid = diploid
diploid + haploid = haploid
haploid + haploid = diploid
diploid + diploid = diploid
Answer:
option c haploid + haploid = diploid
Step-by-step explanation:
Answer:
haploid + haploid = diploid
Step-by-step explanation:
I just took the test
trust me bro
Write an exponential equation?
Answer:
[tex]y = 3^{-x-2}[/tex]
Step-by-step explanation:
Since the graph is exponential, the default form of formula is going to be:
y = aˣ;
First question is, what information do we have?
I can see 3 distinct points: (2, 1), (1, 3) and (0, 9);
Normal exponential curve have a positive gradient at every point, increasing as you proceed along the x-axis to ∞;
The opposite is true of the graph in the image which tells us it is reflected in the y-axis as compared to a default exponential graph;
Any exponential function will have the point (0, 1);
Considering we have (2, 1), there seems to be a translation of 2 units rightwards;
Then considering the pattern of the y-values of the points identified above, which is 1, 3 and 9;
3⁰ = 1, 3¹ = 3 and 3² = 9;
This suggests a = 3;
We then combine this like so:
So, if we start with f(x) = 3ˣ
Then we need to apply the transformations identified above in the order of stretching, then reflections and finally translations;
Applying the reflection first;
[tex]g(x) = f(-x) = 3^{-x}[/tex]
Then, the translation of 2 units rightwards like so;
[tex]g(x-2) = 3^{-(x-2)}[/tex]
There is no apparent stretching, there could be, but, we don't know so, best thing to do is to test what we have thus far and check if it matches the graph in the image;
So, we end up with:
[tex]y = 3^{-x-2}[/tex]
Now, to test this;
Let x = 0, then:
[tex]y = 3^{-(0)+2} \\\\ y = 3^{2} \\\\ y = 9[/tex]
This matches (0, 9);
Similarly, when x = 1, then y = 3;
And x = 2, then y = 1;
This matches the graph, so this seems to be the equation of the graph.
Hailey took a taxi from her house to the airport. The taxi company charged a pick-up fee of $1.60 plus $0.75 per mile. The total fare was $8.35, not including the tip. Write and solve an equation which can be used to determine xx, the number of miles in the taxi ride.
Answer:
1.60+0.75x=8.35
x=9
Step-by-step explanation:
1.60+0.75x=8.35 will be the equation to determine the number of miles x.
How to form an equation?Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.
In other words, an equation is a set of variables that are constrained through a situation or case.
Given that,
Pickup charge (fixed charge) = $4.60
Charge per mile = $0.75 /mile
Total charge = $8.35
So,
Total charge = pick up charge + Charge per mile × number of mile(x)
8.3.5 = 1.60 + 0.75x
1.60+0.75x=8.35
Hence "1.60+0.75x=8.35 will be the equation to determine the number of miles x".
For more about the equation,
https://brainly.com/question/10413253
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sum of 2x two thirds x + 5 and 11 - x. please help :)
Answer:
*If you mean*
2x+2/3(x+5) +11-x
6/3x+2/3x+10/3+33/3-x
8/3x+43/3-x
5/3x+43/3
*if you mean*
2x+2/3x+5+11-x
6/3x+2/3x+5+11-x
8/3x+16-x
5/3x+16
Besides 52 and 1, what is one factor of 52
Answer:
The factors of 52 are 1, 2, 4, 13, 26, 52.
Step-by-step explanation:
Answer:
The factors of 52 are 2, 4, 13, 26,
Step-by-step explanation:
