Answer:
x=1/4
Step-by-step explanation:
x=0.25
solve for system of linear equations by substitution
y = 2x + 3
y = 3x + 5
Answer:
(- 2, - 1 )
Step-by-step explanation:
Given the 2 equations
y = 2x + 3 → (1)
y = 3x + 5 → (2)
Substitute y = 3x + 5 into (1)
3x + 5 = 2x + 3 ( subtract 2x from both sides )
x + 5 = 3 ( subtract 5 from both sides )
x = - 2
Substitute x = - 2 into either of the 2 equations and evaluate for y
Substituting into (1)
y = 2(- 2) + 3 = - 4 + 3 = - 1
solution is (- 2, - 1 )
help me with this question
Answer:
960 cm³ I think it may be correct
Middle school math ! Plz help!!
Answer:
x < 11
Step-by-step explanation:
-9x + 40 > -59
Subtract 40 from each side.
-9x > -99
Divide by -9 on each side. (flip the symbol)
x < 11
Plz answer: 20 points and Brainliest!!!
Match the word with the definition.
Answer:
function is #4
domain is #2
range is #3
a vertical line test is #5
practical range is#8
practical domain is#7
function notation is#6
relation is #1
Step-by-step explanation:
hope this helps:)
Solve: 7×-4=-8×+8
hurry!
Answer:
x = 4/5
FILLER FILLER FILLER
Can someone help me with this? Please this would mean so much.
Answers:
x = angle MLN = 35 degrees
angle FLJ = 55 degrees
=================================================
Explanation:
This problem is fairly tricky if you're not sure what to look for. A slight clue is that they've marked a red point that strangely doesn't have a label on it. It's a fairly small point but it's definitely there if you look closely. While this point's location isn't exactly what we want, we're fairly close. Start at point L and draw a ray through the center point P. Ray LP will intersect the circle at point A, as shown in the diagram below.
From here, draw segments FA and MA. Now notice that inscribed angle LMF = 55 and inscribed angle FAL both subtend the same arc. The term "subtend" basically means "cut off". This arc that the inscribed angles subtend is minor arc FL. A minor arc is where you travel the shorter path around the circle, which indicates its measure is less than 180 degrees.
Since inscribed angles LMF and FAL subtend the same minor arc, this makes the inscribed angles to be congruent.
In short: angle FAL is 55 degrees
----------------------
Segment LA goes through the center P. Through Thales theorem, we know that inscribed angle LFA is 90 degrees. Consequently, we can determine that inscribed angle FLA is 90-55 = 35 degrees.
Segment JL is tangent to the circle, meaning that angle ALJ is 90 degrees. So angle FLJ is 90-35 = 55 degrees.
It's not a coincidence that angle FLJ, angle FAL, and angle LMF are the same measure.
----------------------
We found that angle FAL was 55 degrees. Applying Thales theorem again shows that angle MAF is 90 degrees. Therefore, angle LAM is 90-55 = 35 degrees.
Focus now on triangle LMA. This is also a right triangle (Thales Theorem). The upper acute angle we found was angle LAM = 35, so the lower acute angle is ALM = 55.
Then we can find angle MLN = (angle ALN) - (angle ALM) = 90 - 55 = 35
In short, angle MLN = 35 degrees
Similar to the previous section, it is not a coincidence that angles LFM, LAM and MLN are the same measure.
------------------------
As an alternative, since we know angle FLJ = 55, and angle FLM is 90 degrees, this means...
(angle FLJ)+(angle FLM) + (angle MLN) = 180
55 + 90 + angle MLN = 180
145 + angle MLN = 180
angle MLN = 180 - 145
angle MLN = 35 degrees
1. 20% of 150 is what number?
Answer:
30
Step-by-step explanation:
First, you have to convert 20% into a decimal.
Explanation:
20 ÷ 100 = 0.2
Now multiply 0.2 by 150
Explanation:
0.2 × 150 = 30.
Therefore, 20% of 150 is 30.
- 7th Grade Work -
A bagel shop offers a mug filled with coffee for $7.75, with each refill costing $1.25. Kendra spent $31.50 on the mug and refills last month. How many refills did Kendra buy?
Answer:
19
Step-by-step explanation:
hope this helps with the problem
The Tennis Club decided to buy T-shirts for its members. Action Sports Apparel quoted the following prices for the T-shirts
Number of T-Shirts Total Cost (dollar)
12
156
17
211
22
266
Which equation best describes the relationship between the total cost, c(t), and the number of T-shirts, t?
ok
Answer:
12
Step-by-step explanation:
hi
Equation which describe relationship between total cost and number of t-shirt is [tex]c(t)=75.93e^{0.06t}[/tex].
Data given are ,
Number of t-shirt (t) total cost c(t)
12 156
17 211
22 266
According to above table, exponential function best describes the relationship between the total cost, c(t), and the number of T-shirts, t.
Let, [tex]c(t)=Ae^{kt}[/tex]
Substitute , t=12 and c(t) = 156
We get, [tex]156=Ae^{12k}.......(1)[/tex]
Substitute , t=17 and c(t) = 211
We get, [tex]211=Ae^{17k} ........(2)[/tex]
After solving above equations.
We get, A = 75.93 and k = 0.06
Thus, [tex]c(t)=75.93e^{0.06t}[/tex]
Learn more:
https://brainly.com/question/12626186
Predict how many times you will roll a number less than 4 if you roll a standard number cube 200 times.
Round to the nearest integer, if necessary.
times.
You will roll a number less than 4 about
Answer:
100 times
Step-by-step explanation:
you have a 3/6 chance of rolling less than 4 once
so you multiply 3/6 times 200- you get 600/6
you simplify 600/6 to 100
100 times is the answer.
Have a fantasical day.
Find x
Secant tangent angles
ILL MARK BRAINLIEST!!!
Answer:
[tex]x = \frac{50 + 92}{2} = 71[/tex]
Please help me with this
Below. What is m∠1?
m∠1 =
Answer:
70 degrees
Step-by-step explanation:
a football is kicked at an angle of 60 with initial velocity of 80 ft./s. approximately how far will the ball travel horizontally before it hits the ground?
4ft.
13ft
75ft
173ft
Answer:
75ft
Step-by-step explanation:
We are to find the maximum height reached by the ball. This is expressed as;
H = u²sin²Ф/2g
u is the initial velocity = 80 ft./s.
Ф is the angle = 60degrees
g is the acceleration due to gravity = 32ft/s
Substitute
H =80²sin²60/2(32)
H = 6400sin²60/64
H = 100 (0.8660)²
H = 100*0.749956
H = 74.9956
H ≈ 75ft
Hence the ball has travelled 75ft apprximately
When you spin a rectangle, what 3D figure do you get? cylinder prism cone sphere
Answer:
A cylinder
Step-by-step explanation:
When you rotate the rectangle you are make a circle but since its volume the original height of the rectangle is the height of the circle which would mean a cylinder.
Answer:
CYLINDER
Step-by-step explanation:
Please help
Meeeeeeeeeeeeeee
Answer:
Step-by-step explanation:
The equation of this circle is (x - 2)^2 + (x + 3)^2 = 36.
The center of the circle is at (h, k): (2, -3), and the radius, r, is 6.
given p(a) =0.7, P(b) = .86 and P (A and B) = 0.652 find the value of p (A|B)
Answer:
.758 or 163/215
Step-by-step explanation:
Conditional probablity formula:
(A|B)= (A∩B)/B
we have
.652/.86
this equals .758 or 163/215
Question 3 (1 point)
Mrs. Randolph has 39 math books and 57 science books that she needs to put in boxes. Each box can hold 8 books. How many
boxes does Mrs. Randolph need? Explain.
please, help me with this fast!! I'm giving points!!!!
Answer:
Step-by-step explanation:
c circle
Please help! Find the value of X
Answer:
16.50
Step-by-step explanation:
divide it to the upper thanks
pls answer i need the answer
1 ticket
2 tickets
3 tickets
4 tickets
Answer:
3
Step-by-step explanation:
Answer:
2 tickets
Step-by-step explanation:
a + c = 5
9a + 4c = 30
let a = 5-c
substitute:
9(5-c) + 4c = 30
45 - 9c + 4c = 30
45 - 5c = 30
-5c = -15
c = 3
a = 2
Recall the experiment comparing patients 4 weeks after surgery for carpal
tunnel syndrome. The patients who had endoscopic surgery demonstrated
a mean pinch strength of 9.1 kg compared to 7.6 kg for the open- incision
patients.
4. What hypotheses would you test?
5. The P-value of the test was less than 0.05. State a brief conclusion.
Answer:
4. H0: u1= u2 Ha; u1≠ u2
5. The smaller value of p supports the null hypothesis.
Step-by-step explanation:
4. The null and alternate hypotheses are
H0: u1= u2 i.e there no difference between the mean pinch strengthof the two surgeries
against the claim
Ha; u1≠ u2 i.e there a difference between the mean pinch strengthof the two surgeries
It can be written like this as well
H0: u1 -u2= 0 i.e there no difference between the mean pinch strengthof the two surgeries
against the claim
Ha; u1 -u2≠ 0 i.e there a difference between the mean pinch strengthof the two surgeries
Part 5. The test having a p- value less than 0.05 tells that the null hypothesis cannot be rejected. Theres no evidence to reject the null hypothesis.
The smaller value of p supports the null hypothesis.
Sarah wanted to know how many of her fellow students have at least one cat at home. She randomly sampled 30 students from her school and 11 of them answered yes. What is the approximate proportion of students who have at least one cat?
A
0.11
B
0.27
C
0.33
D
0.37
The proportion of students who have at least one cat is 0.37
The correct option is : (D)
What is fraction?A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing.
Total students samples=30
Students answered yes =11
The proportion of students who have at least one cat
= [tex]\frac{11}{30}[/tex]
= 0.367
≈ 0.37
Hence the proportion of students who have at least one cat is 0.37.
Learn more fraction here:
brainly.com/question/10354322
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How do people find bog bodies?
There have been more than 500 Iron Age bog bodies and skeletons recovered in Denmark alone, with additional finds made in Germany, the Netherlands, the United Kingdom, and Ireland. These discoveries date from between 800 B.C. and 200 A.D.
What is bog bodies?The term “quaking bog” refers to the unstable surface of the bog, which will sink slightly beneath a weight. Even the plants may be through to reach the water below. This is how both people and animals have drowned. If the peat is dense and spongy, non-floating bogs may also tremble.
here, we have,
Boggy body reports first appeared in the early 18th century. More than 1,850 bog remains were catalogued by the German scientist Alfred Dieck in 1965, however subsequent research showed that Dieck made many errors in his work.
Before cutting into the peat, ground-penetrating radar can be used to locate bodies and artifacts beneath the surface of bogs.
Therefore, people find bog bodies looking for peat for fuel. it's something along those lines.
Learn more about bog bodies here:
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396 divided by 11. Step by step explanation
Answer: 36
Step-by-step explanation: using long division you take 11 divide into 398 so first, 11 goes into 39, 3 times
you have 6 left, so keep the 6 and drop down the other 6
next 11 goes into 66, 6 times making it 396/11= 36
hope this helps
Answer:
36
Step-by-step explanation:
396 divided by 11 is equal to 36
36
11/[tex]\sqrt{396\\}[/tex]
- 33
066
- 66
0
The difference of two numbers is 74. Twice the first and thrice the Second sum up to 138. Find the two possible numbers . anyone??
Answer:
72 and -2
Step-by-step explanation:
x - y = 74
2x + 3y = 138
x - y = 74
y = x - 74
2x + 3(x - 74) = 138
2x + 3x - 222 = 138
5x = 360
x = 72
x - y = 74
72 - y = 74
-y = 2
y = -2
Solve the following expression if x = 5 and z = 8. x + (-z)
Answer:
z = 20 , x = 5
Step-by-step explanation:
<3 pwease help will do anything lol <3
2. A 480 Ω resistor is connected in series to a 360 Ω resistor and a 120-V power supply.
a. Draw the circuit.
b. Calculate the equivalent resistance of the circuit.
c. Calculate the current through the battery.
d. How much current is passing through each resistor?
e. Calculate the voltage drop across each resistor.
f. How does the voltage drop across each resistor compare to the voltage of the battery
I just answered a so let's start with b :
______________________________
b. The equivalent resistance of series
resistances is equal to their sum
Thus :
equivalent resistance = 480 + 360
equivalent resistance = 840
_______________________________
c.
I = V ÷ R
I = 120 ÷ 840
I = 0.1428 A
_______________________________
d. 0.1428 A
_______________________________
e. 480 ===》 120 - ( 480 × 0.1428 ) =
120 - 68.544 =
51.456
360 ===》 120 - ( 360 × 0.1428 ) =
120 - 51.408 =
68.592
_______________________________
f. 480 ===》68.544 lower than battery
360 ===》 51.408 lower than battery
what is -7 + 1/3?
10 points pls answer
Answer:
-6 2/3
Step-by-step explanation:
does anyone know how to solve this problem?