Answer:
16+25=41hope it helps.
Answer:
41
Step-by-step explanation:
1. The sum of twice a number and 4 times another number is 4. The difference of the
numbers is 5. Find the numbers.
9514 1404 393
Answer:
4, -1
Step-by-step explanation:
We can let x and y represent the two numbers. The first relation is ...
2x + 4y = 4
The second relation is ...
x - y = 5
Subtracting the second relation from half the first gives ...
1/2(2x +4y) -(x -y) = 1/2(4) -(5)
3y = -3
y = -1
From the second relation, ...
x = 5 +y = 5 -1 = 4
The two numbers are 4 and -1.
What quantity of 75 per cent acid solution must be mixed with a 30 per cent solution to produce 1080 mL of a 50 per cent solution?
Answer: 480 mL, 600 mL
Step-by-step explanation:
Given
The concentration of the first acid is 75%
The concentration of the second acid is 30%
The final mixture has a concentration of 50%
The final volume is 1080 mL
Suppose x and y be the volume of the first and second acid
[tex]\therefore x+y=1080\quad \ldots(i)\\0.75x+0.3y=0.5\times 1080\quad \ldots(ii)[/tex]
Solving the above equations we get
[tex]x=480,y=600[/tex]
So, the quantity of the first acid is 480 mL and 600 mL for the second mixture.
9)
Find the average rate of change for f(x)= x to the second power+ 7x+10 from x= 0 to x= 2
.
Answer:
9
Step-by-step explanation:
At x=0, this function's y-value is simply 10. At x=2, the y-value is 28.
We can figure this out by using the slope formula.
[tex](y^2-y^1)/(x^2-x^1)[/tex]
We plug in values to get:
[tex](28-10)/(2-0)[/tex]
18 / 2
9
write the quadratic formula y=x^2-6x+7 in vertex form.
Answer:
Step-by-step explanation:
Start like this: x^2 - 6x = -7. Now you have the x terms on one side and the constant on the other. Take half the linear term (-6x) which is 3 and then square that (9) and add it to both sides, giving you x^2 - 6x + 9 = -7+ 9, or x^2 - 6x + 9 = 2. Now make the left side into the perfect square binomial you created by completing the square: (x-3)^2 = 2, and then move the 2 over to get: (x-3)^2 - 2. That's the vertex form for a parabola with a vertex at (3, -2)
ANSWER ASAP DONT SEND A FILE WHATS THE TRANSFORMATION??
Answer: reflection, translation
Step-by-step explanation:
Answer:
Copy the link and email who you need to send it to
Step-by-step explanation:
This should work
Please answer the question CORRECTLY with a logical explanation. You will get brainliest guaranteed.
Answer:
B
Step-by-step explanation:
3/5 == 0.6
Which part of the line is 0.6?
A < 0.5 so there's no way A can be the answer.
C > .75 so it can't be the answer either.
D > 1.5 so it can't be the answer either.
B is the only answer left and it sits just right in front of 0.5, which is close to 0.6.
help fast i’m bad with math help
Answer:
D. She should find the average of 4.4 and 4.5
Explanation:
(4.4 + 4.5)/2 = 4.45
4.45² ≈ 19.80
4.45² is closer to 20 than 4.4² and 4.5²
next she will repeat the same process: (4.45 + 4.5)/2
tan0 + 1=0
write your answer in radians in terms of pi
Answer:
Our range is within [0,2π]
We cant exceed that.
tan∆ + 1=0
tan∆= -1
∆=tan-¹(-1)
∆=-45°
Now it has 3 Solutions within the given interval
-45° x π/180 = -π/4
So For the second quadrant... 180-∆ = 180-45 =135°
It is true for tan(135) Which is also equal to -1
135xπ/180 = 3π/4
then
360-45 = 315
This is also true because tan(315)=-1
315° x π/180 = 7π/4
This is where we stop so we dont exceed the given range.
6x+4=4x+24...................
Answer:
x = 10
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
10 = 28
Step-by-step explanation:
6 x 1= 6 = 4x1+24=28
Which equation shows that the Pythagorean identity is true for 0 = 360°?
Select the equation that is in the form sin20 + cos20 = 1.
A. (-1)² +02 = 1
B. 02 + 12 =1
O c. 12 + 02 = 1
D. 02 + (−1)2 = 1
If the measure of an angle is 360°, then the value of sin²θ + cos²θ = 1 will be 0² + 1² = 1. Then the correct option is B.
What is a Pythagoras Theorem?If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have:
|AC|² = |AB|² + |BC|²
where |AB| = length of line segment AB. (AB and BC are the rest of the two sides of that triangle ABC, AC being the hypotenuse).
The equation is given below.
sin²θ + cos²θ = 1
If the angle is 360°. Then the equation will be
sin²360° + cos²360° = 1
0² + 1² = 1
Then the correct equation is B.
Learn more about the Pythagoras theorem here:
https://brainly.com/question/12105522
#SPJ2
Answer:
Step-by-step explanation:
it’s B
need help for an assignment please and thank you.
In a college, there are 800 students in the first year, 950 students in the second year and 1000 students in the third year. If this data were graphed as a pie chart, what would be the size of the angle in the third year?
Answer: [tex]130.9^{\circ}[/tex]
Step-by-step explanation:
Given
The number of students in the first year is 800
The number of students in the second year is 950
The number of students in the third year is 1000
If this data is graphed on a pie chart, then the area percentage of area occupied by third years is
[tex]\Rightarrow \dfrac{1000}{1000+950+800}\times 100=36.36\%[/tex]
Now, the angle around the center of the circle is [tex]360^{\circ}[/tex]
[tex]\therefore \text{angle covered by third years=}0.3636\times 360^{\circ}\\\Rightarrow 130.896\approx 130.9^{\circ}[/tex]
A rectangle has an area of 226.1 square miles and a base of 13.3 miles. What is the height?
Answer:
The width (in our case it is the height) of the rectangle equals 17 miles
Step-by-step explanation:
In order to solve this, we need to know the following...
Area of a rectangle = Length x Width
(in our case based on what you said length is the base and width is the height)
Now we just change the formula to our needs and get that...
Width = Area of the rectangle / Length
And so we get...
Width = Area of the rectangle / Length
Width = 226.1 / 13.3
Width = 17 miles
Doug records how many miles and how long he rides his bike each day on a scatter plot.
Use the trend line shown in the scatter plot to estimate the number of miles Doug will ride his bike in 40 minutes.
7
6.5
8
7.5
Answer:
Its 6.5
Step-by-step explanation:
i got 100:)
Answer
Send image next time -_-
Step-by-step explanation:
Brad has 17 balloons. 8 balloons are red and the rest are green. How many green balloons does Brad have?
Answer:
9 green balloons
Step-by-step explanation:
17-8=9
Answer:
Brad has 9 green balloons.
Step-by-step explanation:
......
PLEASE HELP ME PLEASE
Answer:
1. c
2. b
3. a
4. d
5. e
6. f
Step-by-step explanation:
J
degrees
angle GHJ =
degrees
angle GIJ =
Answer:
360 degrees = 68 + 31 + 115 + GJ
GJ = 360 -68 -31 -115
GJ = 146
Inscribed Angle = 1/2 of intercepted arc
Angle GHJ = 146 / 2 = 73 degrees
Angle GIJ = 146 / 2 = 73 degrees
Source: http://www.1728.org/circangl.htm
Step-by-step explanation:
Find the measure of the arc or angle indicated
I need help with both of these please..
Answer:
20. bcg
21. 124
Step-by-step explanation:
Does a triangle with these side lengths exist?
28, 41, 13
Answer:
No
Step-by-step explanation:
it doesnt add up to 180 degrees
Use the triangle inequality theorem.
Add two sides together and see if it is greater than the length of the 3rd side:
28 + 41 = 69 which is greater than 13
41 + 13 = 54 which is greater than 28
28 + 13 = 41 this is equal to the 3rd side length of 41 and not greater than 41
Because 28 + 13 is not greater than 41 those 3 lengths cannot make a triangle.
the graph of liner function f passes through the point (1,-9) ad has a slope of -3 what is the zero of f
Answer:
answer is 4 im pretty sure
Step-by-step explanation:
did da math
The scale on a map reads 1/2 inch = 75 miles. If the distance between two cities on the map is 3 1/4 inches, find the actual distance between the cities.
For which of the following inequalities is x > 4 a solution?
Answer:
C.
Step-by-step explanation:
Answer:
Your answer is C
Step-by-step explanation:
X-3 > 1, Add the 3 to both sides of the inequality.
X > 4
I will give 90 points!!!
A number cube is rolled. what is the probability of rolling 2, 3, or 5?
a. 2/3
b. 1/2
c. 1/3
answer: 1/2
Step-by-step explanation:
Assuming this is a 6 sided number dice The answer would be 3/6 but in simplest form 1/2 because 2, 3, and 5 is half of the numbers on a dice example: 2, 3, 5, 1, 4, and 6 are all the possibilities Hope this helps!
___ - 35 = -103
answer fast pls
Answer:
-103 + (-35) = -138
138 - 35 = -103
138= answer
Step-by-step explanation:
yw <3
Round to the nearest hundredth (2 decimal places) when necessary
Answer:
309.76 is the answer
hope this helps
have a good day :)
Step-by-step explanation:
Which table represents an exponential function of the form y= b^x when 0 < b < 1?
Answer:
table b
Step-by-step explanation:
Edge
b) If it costs £4 to buy 5 pens, how much will it cost to buy 8?
Answer:
10 because you need to find how much one pen would cost. So you decide 5 and 4. the result would be 1.25 then you multiple the result by 8. you get 10
A local elementary school claims that 59% of its students bring their own lunch on a daily
basis. The principal surveyed 100 students and found that only 48% bring their own lunch.
What does the test statistic calculation look like in this situation for an appropriate
hypothesis test? (4 points)
Answer:
[tex]z=\frac{0.48-0.59}{\sqrt{\frac{0.59(0.41)}{100}}}[/tex]
Step-by-step explanation:
The z score in terms of the null hypothesis and surveyed statistic is in the form [tex]z=\frac{\hat{p}-p_0}{\sqrt{\frac{p_0(1-p_0)}{n}}}[/tex], (similar to [tex]z=\frac{x-\mu}{\sigma}[/tex]) where [tex]p_0[/tex] is the population parameter (in this case, 0.59) and [tex]\hat{p}[/tex] is the statistic (in this case, 0.48). Finally, [tex]n[/tex] is the sample size, 100. Substitute in your values, and you get the above answer.
The test statistic calculation look like in this situation for an appropriate hypothesis test is negative.
A local elementary school claims that 59% of its students bring their own lunch on a daily basis.
What is the z score in terms of the null hypothesis and surveyed statistic is in the form?The z score in terms of the null hypothesis and surveyed statistic is in the form,
[tex]\frac{P-P_0}{\sqrt{P_0(1-P_0)/n} }[/tex]
where [tex]p_0[/tex] is the population parameter (in this case, 0.59) and P is the statistic (in this case, 0.48)
Finally, is n the sample size, 100.
Substitute in your values, and you get the above answer,
[tex]Z=\frac{0.40-0.59}{\sqrt{\frac{0.59(0.41}{100} } }\\ \\=-3.8630[/tex]
The test statistic calculation look like in this situation for an appropriate hypothesis test is negative.
To learn more about the static calculation visit:
https://brainly.com/question/15869442
Emily is entering a bicycle race for charity. Her mother pledges $0.30 for every 0.25 mile she bikes. If Emily bikes 8 miles, how much will her mother donate?
For each right triangle below, find the missing side (Pythagorean’s Theorem) and the missing angle (Angle Sum theorem.)
Answer:
a=21.2
n=√29
Step-by-step explanation:
[tex]90+68.2+a=180[/tex]
[tex]a+158.2=180[/tex]
[tex]a=21.2[/tex]
[tex]2^2+5^2=n^2[/tex]
[tex]4+25=n^2[/tex]
[tex]n^2=29[/tex]
[tex]n=\sqrt{29}[/tex]