Answer:
127°
Step-by-step explanation:
180=53+x
127=x
A straight line is 180°
I hope this helps!
pls ❤ and mark brainliest pls!
Robert says that the slope of a line passing through (1, 7) and (3, 9) is equal to the ratio 1-3/7-9 . Is this a correct method for calculating the slope? Explain your answer. (1 point)
Answer:
The slope should be calculated using the formula [tex](7 - 9) / (1 - 3)[/tex] instead of the one that was proposed in the question.
Step-by-step explanation:
The slope of a line in a cartesian plane is the rate at which [tex]y[/tex] changes with respect to [tex]x[/tex].
For this line, the value of [tex]y[/tex] increased (vertically) from [tex]7[/tex] at [tex](1,\, 7)[/tex] to [tex]9[/tex] at [tex](3,\, 9)[/tex] as the value of [tex]x[/tex] increased (horizontally) from [tex]1[/tex] to [tex]3[/tex].
In other words, [tex]y[/tex] changed by [tex](9 - 7)[/tex] while [tex]x[/tex] changed by [tex](3 - 1)[/tex].
The slope of the line (rate at which [tex]y[/tex] changes with respect to [tex]x[/tex]) would be:
[tex]\displaystyle \frac{\text{rise}}{\text{run}} = \frac{(9 - 7)}{(3 - 1)} = \frac{(7 - 9)}{(1 - 3)}[/tex].
In general, for a line that goes through [tex](x_1,\, y_1)[/tex] and [tex](x_2,\, y_2)[/tex], where [tex]x_{1} \ne x_{2}[/tex]:
[tex]\begin{aligned}\text{slope}&= \frac{(y_1 - y_2)}{(x_1 - x_2)} = \frac{(y_2 - y_1)}{(x_2 - x_1)}\end{aligned}[/tex].
What are RQS and TQS?
Answer:
m∠RQS = 72°
m∠TQS = 83°
Step-by-step explanation:
m∠RQS +m ∠TQS = m∠RQT
The two angles combine to make a larger angle
So
m∠RQS = (4x - 20)
m∠TQS = (3x + 14)
(4x - 20) + (3x + 14) = 155
Group the Xs and the constants
4x + 3x - 20 + 14 = 155
Combine like terms
7x - 6 = 155
Add 6 to both sides
7x = 161
Divide by 7 on both sides
x = 23
Check:
4(23) - 20 + 3(23) + 14 = 155
92 - 20 + 69 + 14 = 155
155 = 155
But we need to find m∠RQS and m∠TQS. So plug in x = 23 to the values.
m∠RQS = 4(23) - 20 = 72°
m∠TQS = 3(23) + 14 = 83°
Checking:
72 + 83 = 155
-28 = 2x + 8 - 5x
solve for x.
PLEASE
Hi ;-)
[tex]-28=2x+8-5x\\\\2x+8-5x=-28\\\\2x-5x=-28-8\\\\-3x=-36 \ \ /:(-3)\\\\\huge\boxed{x=12}[/tex]
Answer:
x=12
Step-by-step explanation:
-28=2x+8-5x
-28=-3x+8
Add 3x on both sides:
3x-28=-3x+8+3x
3x-28=8
Add 28 on both sides:
3x-28+28=8+28
3x=36
Divide 3 on both sides:
3x/3=36/3
x=12
please please please help me.
Answer: sorry i just know no.2
Step-by-step explanation:
2) = soln
h = ?
p = 5
b =9
[tex]h^2 = p^2 + b^2\\h^2 = 3^2 + 9^2\\or, h^2 = 9+81\\or, h^2 = 90\\so, h = \sqrt{90} \\\\[/tex]
Let the angle be x
so
tan x = p/b
tan x = 5/9
x = [tex]tan^{-1} (5/9)[/tex]
so, x = 29.054
rounding off to ten
x = 29.1
now
let the another angle be y
so
90+y+29.1 = 180
29.1 + y = 180-90
y = 90-29.1
so, y = 60.9
the missing side is √90 and missing angles are 29.1° and 60.9°
A music club was formed in the month of January last year. The function m(t) = t2 - 4t + 25 models the number of club members for the first 10 months, where t is the number of months since the club's inception. Complete the square, and graph this function. What is the minimum number of members the club had during the year? A. 29 members B. 24 members C. 22 members D. 21 members
Answer:
D
Step-by-step explanation:
We have to find the vertex of m(t) = t² - 4t + 25
a = 1
b = 4
c = 25
To do that we first need to move the 25 to the other side by subtracting 25 from both sides
m(t) = t² - 4t + 25
- 25 - 25
m(t) - 25 = t² - 4t
To continue completing the square, we have to add 4 to both sides since it is the square of half of b.
m(t) - 25 + 4 = t² - 4t + 4
m(t) - 21 = t² - 4t + 4
Now, we already found the minimum amount of members, but let's finish the square completion to find the vertex.
m(t) - 21 = t² - 4t + 4
Factor the right side
m(t) - 21 = (t-2)(t-2)
m(t) - 21 = (t-2)²
Finish it by adding 21 to both sides
m(t) - 21 = (t-2)²
+ 21 +21
m(t) = (t-2)² + 21
With this vertex form equation, we can tell that the vertex is (2,21)
Meaning 21 is the lowest number for m(t) for this equation.
Angle AOE has what measurement according to the protractor?
A. 140°
B. 60°
C. 40°
D. 120°
Answer:
120°
Step-by-step explanation:
The protractor shows that ∠AOE is 120°. If A started from the left, then it would be 60°.
Answer:
120
Step-by-step explanation:
Is 53240 a perfect cube? If not, find the smallest number should 53240
be divide so that the quotient is a perfect cube?
Answer:
53240 should be divided by 5 to make it a perfect cube.
Step-by-step explanation:
help me find the area pls
round 0.3782;hundredths
Answer:
hundredth:0.3800
thousand:0.4000
tenth:0.3780
Vocabulary What type of statement results
from inductive reasoning?
Answer:
Inductive reasoning is the opposite of deductive reasoning. Inductive reasoning makes broad generalizations from specific observations. Basically, there is data, then conclusions are drawn from the data. ... Even if all of the premises are true in a statement, inductive reasoning allows for the conclusion to be false.
Step-by-step explanation:
An ostrich can run at the speed or 1.67 kilometers per minute. How fast can the ostrich run in miles per
hour?
factorize the following:
x^4+x^2+1
Answer:
[tex] {x}^{4} + x {}^{2} + 1 \\ \\ {x}^{4} + 2 {x}^{2} - {x}^{2} + 1 \\ \\ (x {}^{4} + 2 {x}^{2} + 1) - {x}^{2} \\ \\ ( {x}^{2} + 1) {}^{2} - {x}^{2} \\ \\ ( {x}^{2} + 1 + x)( {x}^{2} - x + 1) \\ \\ ( {x}^{2} + x + 1)( {x}^{2} - x + 1)[/tex]
PLEASE HELP ME ASAP
What's the difference in the total value of a $15,000 deposit between an account with an annual simple interest rate of 3.3% and an account with an annual compound interest rate of 3.3% after 50 years? Round all final answers to the nearest whole number.
4y-6-5y/7 =-3
The / is division sign
Explain
Step-by-step explanation:
28y-42-5y=-21
28y-42=-21+5y
-42=-21+5y-28y
-42=-21-23y
42=21+23y
23y=42-21
23y=21
y=21/23
Answer:
y = 15
Step-by-step explanation:
[tex] \frac{4y - 6 - 5y}{7} = - 3[/tex]
➡️ [tex] \frac{ - y - 6}{7} = - 3[/tex]
➡️ [tex] - y = 6 = - 21[/tex]
➡️ [tex] - y = - 21 + 6[/tex]
➡️ [tex] - y = - 15[/tex]
➡️ [tex]y = 15[/tex]
find the domain of y= √3x+3
Answer:
it's hard to tell the exact question being asked...
y = [tex]\sqrt{3x} + 3[/tex]
or
y = [tex]\sqrt{3x+3}[/tex]
if y = [tex]\sqrt{3x} + 3[/tex] then Domain is [0 ,∞ )
if y = [tex]\sqrt{3x+3}[/tex] then Domain is [-1 ,∞ )
Step-by-step explanation:
i really need to find out how to find a,b, and c in the quadratic formula can u please help ASAP will mark as BRAINLIEST!!
Answer:
Brainliest, please! (Answer below)
Step-by-step explanation:
The basic form for any quadratic function is:
ax^2 + bx + c.
The constant of the 1st term, the x^2 constant, is a, the constant of the second term, the x constant, is b, and the constant, the third term, is c. There are some instances where there will not be a b or c. For example, x^2 + 2, or 3x^2 - 4x. However, there must always be an a, or else the function isn't quadratic.
Jamil buys a video game for 20% off the original price. He pays $36, excluding sales tax. One week later, he sees an advertisement for $10 off the original price. This is the new sales price. Complete the sentence to explain whether Jamil paid more or less than the new sale price, excluding sales tax.
The new price offers price is less than the offer of 20% discount.
Given that,
Jamil buys a video game for 20% off the original price. He pays $36, excluding sales tax. One week later, he sees an advertisement for $10 off the original price. This is the new sales price.
The percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.
Here,
percentage of the price paid = 1 - 0.2 = 0.8
Let the original price be x,
According to the question,
36 = 0.8 (x)
x = 36/0.8
x = $45
Since the original price is $45,
As of the new price, the price is $10 so the price becomes $35 which is less than a 20% discount.
Thus, the new price offers price is less than the offer of 20% discount.
Learn more about percentages here:
brainly.com/question/13450942
#SPJ5
X^6-64 divided by X+2
Answer:
[tex] \frac{ {x}^{7} + 2x - 64 }{x} [/tex]
Step-by-step explanation:
[tex] {x}^{6} - 64 \div x + 2[/tex]
➡️ [tex] {x}^{6} - \frac{64}{x} + 2[/tex]
➡️ [tex] \frac{ {x}^{7} - 64 + 2x }{x} [/tex]
➡️ [tex] \frac{ {x}^{7} + 2x - 64 }{x} [/tex]
4^x when x = 2 need asap
Answer:
16
Step-by-step explanation:
Substitute the value of the variable into the equation and simplify.
what is (2x+30)° and (3x+20)°
Answer:
solution:
here,
or, (2x+30)°=(3x+20)°
or,2x+30°=3x+20°
or, 2x+3x=30°+20°
or, 5x=50°
or, x=50°÷5
so that: x=10° ans
1)
A bank is offering 2.5% simple interest on a savings account. If you deposit $5000,
how much interest will you earn in one year?
Answer:
$125 is the interest that you might earn
[tex]\\ \sf\longmapsto I=\dfrac{PRT}{100}[/tex]
[tex]\\ \sf\longmapsto I=\dfrac{5000(2.5)(1)}{100}[/tex]
[tex]\\ \sf\longmapsto I=\dfrac{12500}{100}[/tex]
[tex]\\ \sf\longmapsto I=\$ 100[/tex]
A(-3,-4) Translate A 3 units right, 8 units up
Answer:
at the origin, move it 3 units to the right, then raise the unit up by 8 units. Then the origin would be (0,4)
Step-by-step explanation:
Write 0.002349 in scientific notation.
Hi! I'm happy to help!
To solve this, we first need to know what scientific notation is. Scientific notation is a way a number is written. You write it using a number ranging from 1 to <10. Then, you multiply this number by [tex]10^{x}[/tex].
In order to make this number reasonable for scientific notation, you have to move the decimal a certain amount of places. In this case you move it 3 places to the right to make your number 2.349. Since we moved it 3 places to the right our x will be -3. (If we'd moved it 3 places to the left, our x would be positive 3.)
So now, we insert our numbers:
2.349·[tex]10^{-3}[/tex]
You write 0.002349 like 2.349·[tex]10^{-3}[/tex], when it is in scientific notation.
I hope this was helpful, keep learning! :D
A chemical company makes two brands of antifreeze. The first brand is 55% pure antifreeze, and the second brand is 80% pure antifreeze. In order to obtain 180 gallons of a mixture that contains 65% pure antifreeze, how many gallons of each brand of antifreeze must be used?
Answer:
y = 116
x = 64
Step-by-step explanation:
.55x + .80y =.8* 160
x + y = 180
~~~~~~~~~~~~~~~~~~~~
x = 180-y
Including a 5% sales tax, an inn charges $172.20 per night. Find the inn's nightly cost before tax is added.
The cost of the room before the tax is X.
To get the total cost they multiply the cost of the room x by 1 + sales tax rate.
Total cost would be x(1.05)
To find x divide total cost by 1.05:
Cost of room before tax: 172.20/1.05
Cost: $164
Can someone help me please??
Hi! I'm happy to help! (sorry for the wait, my computer crashed)
A linear function is where one variable is independent (x), and another is dependent. This means that we use x to solve for y, y depends on x to be found.
To solve this, we use an equation call slope intercept form, which states that y=mx+b.
There is only 1 solution line. (to solve for how to find y, you only have to have two verifications)
For our first table, we have x as 1, 2, 3,and 4. y is 3, 6, 12, and 24.
For our first set, with x is one and y is 3, there are infinite solutions, so we have to test and see if it matches the second set of x is 2 and y is 6.
How I like to check for what m will be, I check the first two y values. The first two are 3 and 6. They have an increase of 3, so m will be 3. (this only works when x increases by 1)
With m being 3, we can solve for b, to complete the equation:
3=(3(1))+b
3=3+b
With this, b must equal 0
3=3+0
Now, we just have to check if this equation matches all of the other x values:
6=(3(2))+0
6=6+0
__________________________________
12=(3(3))+0
12=9+0
12≠9
This equation doesn't seem to work, so this is not a linear function.
For our next table, our first two y values are 2 and 5, which have a increase of 3, so our m will be 3 again.
Now, let's solve for b:
2=(3(1))+b
2=3+b
In this case, b will be -1 because 2=3-1
Now, let's check if this matches up with our other values:
5=((3)2)-1
5=6-1
_______________________________
9=((3(3)-1
9=9-1
9≠8
This equation doesn't work, so it is not a linear function.
For our next table, we have our first two y values as -3, and -5. This has a decrease of 2, so our m will be -2.
Now, let's solve for b:
-3=((-2)1)+b
-3=-2+b
In this equation, b will be -1 because -3=-2-1.
Now, let's check our other values:
-5=(-2(2))-1
-5=-4-1
___________________________________________
-7=(-2(3))-1
-7=-6-1
______________________________________________
-9=(-2(4)-1
-9=-8-1
All of these values match, so this is a linear function.
If you wanted to (you don't have to, but if you needed verification) you could check the fourth problem.
Has a decrease of 2, so m would be -2. Plug it in:
-2=(-2(1))+b
-2=-2+b
b would be 0.
Check it on the second problem:
-4=(-2(2))+0
-4=-4+0
Check the third:
-2=(-2(3))+0
-2=-6+0
-2≠-6
The fourth table doesn't match either, so it is not a linear function.
You should choose option 3 because it is a linear function.
I hope this was helpful, keep learning! :D
CORRECT ANSWER ONLY PLEASE!! What is the simplest radical form of the expression?
(8x5y3)23
The choose 1.
[tex]4 {x}^{3} {y}^{2} \sqrt[3]{x} [/tex]
I hope I helped you^_^
The simplest radical form of the expression is [tex]4x^2 y^2\sqrt[3]{x}[/tex].
What is simplification of an expression?Usually, simplification involves proceeding with the pending operations in the expression.
Simplification usually involves making the expression simple and easy to use later.
When we have indices in the form [tex]ax^{2/3}[/tex] , To find the cube root of the (ax)².
This can be expressed mathematically as
[tex](\sqrt[3]{ax} )^2[/tex]
From the given expression
[tex](8x^5 y^3)^{2/3}\\\\(\sqrt[3]{(8x^5 y^3)})^{2}\\\\4x^2 y^2\sqrt[3]{x}[/tex]
Thus, the simplest radical form of the expression is [tex]4x^2 y^2\sqrt[3]{x}[/tex].
Learn more about an expression here:
https://brainly.com/question/1249625
#SPJ2
help!! this is math.
Answer:
2,78,31,64,4-2,10-6,54,-97,-38,-8-7,-4-5,-11-1,-16HELP HELP HELP!! Giving brainliest
Of 200 students, 150 like Math or English. 50 like both subjects and 90 of the students like math. How many students like English?
Answer:
60 is the correct answer
hope it helps
Answer:
110
Step-by-step explanation:
150+50-90= 110
so therefore the answer is 110
Find the value of x from the given figure:
Answer:
60°
Step-by-step explanation:
2x and x are linear pair,
=> 2x + x = 180
=> 3x = 180
=> x = 180/3
=> x = 60°
=>2x =120°
Answer:
x = 60
Step-by-step explanation:
x + 2x = 180 {linear pair}
Combine like terms
3x = 180
Divide both sides by 3
x = 180/3
x = 60