Answer:
First, divide 30 by 15
Step-by-step explanation:
15b = 30
15/15b = 30/15
b = 2
coach went and bought 4 bats and 7 baseballs for $68 the next day bought one bat and one ball for 14 how much is each individual item
Answer:
Baseballs is: $10
Bats is: $4
Step-by-step explanation:
Let x represent bats
and y represent baseballs
So we have :
(1) 4x + 7y = 68
(2) x + y = 14 => y = 14 - x
Use substitution.
Substitute equation (2) into equation (1)
4x + 7(14 - x) = 68
Solve for x
4x + 98 -7x = 68
-3x + 98 = 68
-3x = -30
x = 10
Solve for y, replace x = 2 into equation (2)
y = 14 - 10 = 4, so y = 4
Since x represents bats and y represents baseballs, it cost $10 for the bats and $4 for the baseballs.
Jose rides his bicycle for 5 minutes to travel 8 blocks. He rides for 10 minutes to travel 16 blocks.
answer
15 = 24
20= 32
25=40
HELP PLEASEEEEEEEEEEEEE
What is the rate of change for f(x) = -2 cos 4x – 3 on the interval from x = 0 to x = pi over 4 ?
Answer:
-5.04199038
Step-by-step explanation:
(y2-y1)/(x2-x1)
Plus, mthway can double check
A box contains 5 red balls, 6 white balls and 9 black balls. Two balls are drawn at
random. (The first ball is not replaced). Find the probability that both balls are of
the same colour
Answer:
[tex]P(Same)=\frac{61}{190}[/tex]
Step-by-step explanation:
Given
[tex]Red = 5[/tex]
[tex]White = 6[/tex]
[tex]Black = 9[/tex]
Required
The probability of selecting 2 same colors when the first is not replaced
The total number of ball is:
[tex]Total = 5 + 6 + 9[/tex]
[tex]Total = 20[/tex]
This is calculated as:
[tex]P(Same)=P(Red\ and\ Red) + P(White\ and\ White) + P(Black\ and\ Black)[/tex]
So, we have:
[tex]P(Same)=\frac{n(Red)}{Total} * \frac{n(Red) - 1}{Total - 1} + \frac{n(White)}{Total} * \frac{n(White) - 1}{Total - 1} + \frac{n(Black)}{Total} * \frac{n(Black) - 1}{Total - 1}[/tex]
Note that: 1 is subtracted because it is a probability without replacement
[tex]P(Same)=\frac{5}{20} * \frac{5 - 1}{20- 1} + \frac{6}{20} * \frac{6 - 1}{20- 1} + \frac{9}{20} * \frac{9- 1}{20- 1}[/tex]
[tex]P(Same)=\frac{5}{20} * \frac{4}{19} + \frac{6}{20} * \frac{5}{19} + \frac{9}{20} * \frac{8}{19}[/tex]
[tex]P(Same)=\frac{20}{380} + \frac{30}{380} + \frac{72}{380}[/tex]
[tex]P(Same)=\frac{20+30+72}{380}[/tex]
[tex]P(Same)=\frac{122}{380}[/tex]
[tex]P(Same)=\frac{61}{190}[/tex]
Amy is cutting a triangle shaped baseball pennant banner out of felt. She starts by cutting a base 6 inches long and two angles
that each measures 75º What will the third angle measure?
A)
20°
B)
25°
30°
D)
50°
9514 1404 393
Answer:
C) 30°
Step-by-step explanation:
The sum of angles in a triangle is 180°. The third angle is ...
180° -75° -75° = 30°
Answer:
the answer is 30°
Step-by-step explanation:
:)))))
The safest way for someone to make an online purchase is to
A.ask friends what websites are secure.
B.check with the government first.
C.buy from a reputable website.
D. visit a locally run website.
Answer:
It is C - buy from a reputable website
Step-by-step explanation:
I got it right on the quiz. Good luck and may the Lord bless you!
Step-by-step explanation:
The safest way for someone to make an online purchase is to buy from a reputable website.
We have given that,
A.ask friends what websites are secure.
B.check with the government first.
C.buy from a reputable website.
D. visit a locally run website.
We have to determine
The safest way for someone to make an online purchase is to
What is the online purchases?Online shopping is a form of electronic commerce that allows consumers to directly buy goods or services from a seller over the Internet using a web browser or a mobile app.
Therefore option C is correct.
Therefore the safest way for someone to make an online purchase is to buy from a reputable website.
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To the nearest tenth of a percent, what percent of the 7th grade students were in favor of wearing school uniforms?
A. 19.2%
B. 41.3%
C. 42.9%
D. 57.1%
Answer:
C. 42.9%
Step-by-step explanation:
They say out of 7th grade so we need the total 7th graders which is 112 and they say in favor so then we take 48 and divide the two 48/112 which gives us a decimal so we then multiply it by 100 to get the percent.
48/112= 0.429
0.429(100)= 42.9%
The percent of the 7th grade students were in favor of wearing school uniforms is 42.9%
What is Percentage?To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.
We have,
Total students in 7th grade = 112
Students who favor school uniforms = 48
So, the percent of the 7th grade students were in favor of wearing school uniforms is
= 48 /112 x 100
= 0.4285 x 100
= 42.85 %
= 42.9%
Thus, the required percentage of student is 42.9%.
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please help i need the number of visita
answer
x=28
explanation
so what would happen is you pay a fee of 22$ and then 1$ per visit and we are looking to see how many visits it take to get to 50$
what we do it put
22+x=50
x is how many visits it would take to 50$
so what we do is subtract 22 from both sides
x=50-22
x=28
How many solutions does this system have?*
(2 Points)
y = -3
y = -x-4
O One Solution
No Solution
O Many Solutions
Answer:
1 solution
Step-by-step explanation:
[tex]y = - 3 \\ y = - x - 4 \\ = > - 3 = - x - 4 \\ = > - x - 4 + 3 = 0 \\ = > - x - 1 = 0 \\ = > - x = 1 \\ = > x = - 1[/tex]
I WILL GIVE BRAINLIEST IF YOU HELP THIS IS REALLY HARD FOR ME I HAVE THE FIRST TWO JUST THE LAST ONE PLEASE ALSO EXPLAIN HOW YOU GET YOUR ANSWER THANK YOU SO MUCHHH!!!!
Answer:
n ≥ -1 or n ≤ 3
Combined:
-1 ≤ n ≤ 3
Since the inequalities are ≤, it'll be a closed circle
The closed circle will start AT -1 and another closed circle will end at 3
Find the x- and y- intercepts of the equation -x+5y=10.
Answer:
X Intercept: (-10,0), Y Intercept: (0,2)
Step-by-step explanation:
Well, firstly you need to rewrite the equation to make it easier. After rewriting it you have the equation y=x/5+2 by adding the x to the right side and dividing everything by 5. Now simply plug in your zeroes in their respective places. For the x intercept, your y value must equal 0 so we have the equation 0=x/5+2. After solving it, x must be -10 in order for our y value to be 0 getting us for the x intercept (-10,0). For the y intercept, your x value must equal zero so you simply subsitute zero in the equation for x which I will do here: y=0/5+2. If our x value is zero, consequently, our y value will be 2 getting us for the y intercept, (0,2).
The graph shows a line and two similar triangles. On a coordinate plane, a line goes through (0, 2) and (6, 4). A small triangle has a rise of 1 and run of 3 and a larger triangle has a rise of 2 and run of 6. What is the equation of the line? y = 3 x y = one-third x y = one-third x + 2 y = 3 x + 2
Answer:
its c / i took the test
Step-by-step explanation:
:)
The Equation of line is y= 1/3 x + 2.
What is Slope?A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,
m = Δy/Δx where, m is the slope
Given-
The points through which line passes (0, 2) and (6, 4).
So, the Slope of the line,
m = (4- 2)/ (6-0)
m= 2/6
m= 1/3
and, the Equation of line is
y- 2 = 1/3 (x - 0)
y-2 = 1/3x
y= 1/3 x + 2
3y = x+ 6
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Help me please
Greatest Common Factor
Answer:
Step-by-step explanation:
Let's first look at the coefficients: 10, -15, 20
The GCF of these numbers is 5 (all numbers are divisible by 5, nothing larger).
Next, let's look at the [tex]x[/tex] terms: [tex]x^{3}, x^{4}, x^{5}[/tex]
The GCF of these terms is [tex]x^{3}[/tex] (find the lowest exponent)
Finally, let's look at the [tex]y[/tex] terms: [tex]y^{5}, y^{8}, y^{6}[/tex]
The GCF of these terms is [tex]y^{5}[/tex] (find the lowest exponent)
This gives us a GCF of [tex]5x^{3}y^{5}[/tex]
Answer:
5x^3y^5
Step-by-step explanation:
4. At school 45 students take piano lessons. The ratio of the numbers of students who take piano
lessons to violin lessons is 15:8. The ratio of the numbers of students who take violin lessons to
clarinet lessons is 8:9.
a) How many students take violin lessons? (2 marks)
b) How many students take clarinet lessons? (2 marks)
Answer:
a) 24 students
b) 27 students
A researcher wants to know if drinking beer makes a person more attractive to mosquitos. 120 people were recruited to partake in this experiment. Each person was randomly assigned to either drink beer or to ingest water. The subject after drinking their beverage was seated close enough so that odor from the individual would be detectable by the mosquitoes (note that the mosquitoes could not actually touch the humans). The researcher then recorded whether or not the mosquito flew toward the subject (assumed flying toward person meant they were attracted to them). 68 people were assigned to drinking beer, while the other 52 were assigned to drinking water. Out of the 68 who drank beer 43 of them had a mosquito fly toward them, while 26 of those who drank water had a mosquito fly toward them. (This is based loosely off an experiment performed by Lefevre et al. (PLOS ONE, 2010)).
Research Question: Are mosquitos more attracted to people who drink beer than water?
1. Identify the explanatory and response variables. State their type.
2. Fill out the 2x2 table below.
TOTAL TOTAL
3. State the parameter of interest and assign a symbol.
4. Calculate the conditional proportions. What does each stand for? Assign a symbol to each.
5. Are the values in question #4 statistics or parameters? Explain.
Answer:
No because both of them mosquito got attracted to them
Answer:
Research answer: No because people who drink more water more than beer should NOT have mosquitoes attracted to them
1. i can identify that if you drink more beer you can get mosquito bites
2. 68 26
3. ?
4. they stand for how many people drink beer or water
5. statistics because in my stats, i can see more people drinking water more than beer
Step-by-step explanation:
PLEASE HELP!!!
The number of fruit flies in a kitchen triples every day. After 4 days, there are 81 fruit flies.
Which equation models the number of fruit flies after x days pass?
A. 27x=81
B. 3* = 81
C. 4* = 81
D. 3x = 81
E. 4x = 81
write the following equation without using an absolute value sign. |y-x|, if y>x
Answer:
y-x [tex]\leq[/tex] 0 and y-x [tex]\geq[/tex] 0
Step-by-step explanation:
As we know,
Absolute value of any given number is the positive number itself. Therefore,
y-x [tex]\leq[/tex] 0 and y-x [tex]\geq[/tex] 0
Which set of segment lengths could be used to construct a triangle?
A)
3,7,12
5, 7, 17
5,3,12
D)
12, 6, 10
9514 1404 393
Answer:
D) 6, 10, 12
Step-by-step explanation:
The sum of the two shortest must exceed the longest. This is only the case for the segment lengths in choice D.
6 + 10 > 12
Answer:
the answer is D. 6 ,10 ,12
Janet saved $400 dollars. She decided to spend 130 on clothes. What percentage of her money did she spend on clothes?
Answer:
32.5
Step-by-step explanation:
Desirae made 138 cookies this week. She baked 2 more than 4 times the total she made last week. How many cookies did she bake last week?
Answer: 34 cookies baked last week
Step-by-step explanation:
138=4x-2
136=4x
34=x
Answer:
34 cookies!
Step-by-step explanation:
If we say the number of cookies that Desirae baked last week was 'x', we can make the following equation for how many she baked this week: 4x+2=138. Here are the following steps to solve for x:
4x=138-2=136
x=34
Therefore she baked 34 cookies last week.
use the distributive property to multiply -7(-p+6)
Answer:
-7(-p+6)
Step-by-step explanation:
Answer:
-7(-p+6)
Step-by-step explanation:
Answer:
[tex]7p-42[/tex]
Why:
To use the distributive property, you multiply all things within the parantheses by the -7 (in this case). To Multiply -p and -7, remember that a negative times a negative equals a positive, so it simply results in 7p. When you multiply -7 and 6, multiply them together and you get -42. You get [tex]7p+-42[/tex], but that's not a fully simplified equation, so get rid of the addition symbol and make the 42 positive. This expression is now fully simplfied into [tex]7p-42[/tex].
P.S. Never ever add a negative in an expression. Lots of teachers like to dock your points for doing it.
What is the height of these trapezoids?
Qi. calculate the thickness of a disc of
a diameter 14cm and Surface area
is 3cm?
Answer:
Thickens (Height) = 0.068 cm
Step-by-step explanation:
Given:
Diameter of disc = 14 cm
Radius of disc = 14 / 2 = 7 cm
Surface area = 3 cm²
Find:
Thickens (Height)
Computation:
Disc is a cylinder in shape
Surface area = 2πrh
3 = 2(22/7)(h)(7)
3 = 44(h)
Thickens (Height) = 0.068 cm
please help with this ixl question
Answer:
I think it would be 25 hours
Step-by-step explanation:
Im not exactly sure but if she prepared 25 kg all together and prepares 1 kg every hour, then i think that would be 25 hours.
I hope this helps :)
Please tell me if im wrong
integrate x
[tex]x4[/tex]
Answer:
The result of the integration is [tex]\frac{x^5}{5}[/tex]
Step-by-step explanation:
Integration of a power of x:
The integration of a power of x is:
[tex]\int x^{n} dx = \frac{x^{n+1}}{n+1}[/tex]
In this question:
[tex]n = 4[/tex]. So
[tex]\int x^{4} dx = \frac{x^{4+1}}{4+1} = \frac{x^5}{5}[/tex]
The result of the integration is [tex]\frac{x^5}{5}[/tex]
Find the general solution of the differential equation and check the result by differentiation. (Use C for the constant of integration.)
[tex]\frac{dy}{dx}[/tex] = 4x^1/6
Answer:
For this we can first multiply both sides by dx:
[tex]dy = 4x^{1/6}dx[/tex]
Next we can integrate both sides:
[tex]\int dy = \int 4x^{1/6}dx\\[/tex]
We can then solve both integrals to get:
[tex]y = 4(\frac{6}{7}x^{\frac{7}{6}}+C_1) = \frac{24}{7}x^{\frac{7}{6}}+C_2[/tex]
We can just say the constant is C2. So the answer is
[tex]y = \frac{24}{7}x^{\frac{7}{6}}+C_2[/tex]
We can also check this by differentiating both sides. We will ultimately get the equation we with. If I made any mistakes or misread something, please let me know.
THIS IS URGENT WILL MARK BRAINLEST PLS HELPP
Answer:
c, 33 degrees
Step-by-step explanation:
180-105=75
180-75-72=33
What is the median of the data represented by the box plot?
Answer:
20
Step-by-step explanation:
20 is the median, or middle value, of all values in the data set
Sylvie made the solid figures shown using unit cubes.
Which statement about these models is true?
A.The volume of Model A is 10 cubic units less than the volume of Model B.
B.The volume of Model B is 4 cubic units greater than the volume of Model A.
C.The volume of Model A and Model B combined is 54 cubic units.
D.Model A and Model B have the same volume.
Answer:
The answer is B.
"The volume of Model B is 4 cubic units greater than the volume of Model A."
Step-by-step explanation:
I just took the test and it's correct, I am sorry if it's not correct but I'm 99.9% sure it is accurate
Find the slope of the line with points: (5,1) and (3,4).
Answer:
m= -3/2
Step-by-step explanation:
(5,1) and (3,4)
Slope:
m=(y2-y1)/(x2-x1)
m= (4-1)/(3-5)
m=3/(-2)
m= -3/2