Answer:
90* each
Step-by-step explanation:
90+90=180 if there are 2 angles
Answer:
they are supplementary angles, so 90 degrees
Step-by-step explanation:
30 POINTS!! PLS SHOW WORK!!
Answer:
[tex]\sin(\theta)=4/5[/tex]
Step-by-step explanation:
Refer to the graph.
From the graph, we can see that our angle is in QII.
In QII, sine is positive and cosine and tangent are negative.
Since our point is at (-3, 4), this means that our adjacent side to our angle is -3 while our opposite side to our angle is 4.
To find sine, we need to find the hypotenuse c.
So, we can use the Pythagorean Theorem:
[tex]a^2+b^2=c^2[/tex]
Substitute -3 for a and 4 for b. This yields:
[tex](-3)^2+(4)^2=c^2[/tex]
Square:
[tex]9+16=c^2[/tex]
Add:
[tex]25=c^2[/tex]
Take the square root of both sides:
[tex]c=5[/tex]
So, our hypotenuse is 5.
And our adjacent is -3 and opposite is 4.
Now, remember that:
[tex]\sin(\theta)=\text{opp}/\text{hyp}[/tex]
Substitute 4 for the opposite and 5 for our hypotenuse. This gives us:
[tex]\sin(\theta)=4/5[/tex]
Since sine is positive in QII, we don't need to add any negatives.
And we're done!
GEOMETRY HELP PLEASE
e. What number, when reduced by 20%, becomes 500?
f. What amount increased by 100% will equal $310
g. After deducting 20% from a sum of money, the remainder is $500. What was the
original amount?
Also what is 1.40 to percent and fraction
Pls help fast
Answer:
E: 625
F: 155
G: 625
Step-by-step explanation:
Hi!
E.
A number, reduced by 20% is 500.
Originally, that number was at 100%.
Reduced = subtraction, so that number = 100%-20%, or 80%.
80% of a number = 500.
80% = .8
.8x = 500
Divide both sides by .8
x = 625
F.
A number that is increased by 100% is a number that is doubled (multiplied by 2).
2x=310
x=155
G.
Originally, the money was at 100%. After being reduced by 20%, the money is at 80% (.8).
.8x = 500
Once again, the answer is 625.
H (?)
To change a decimal to a percent, we multiply by a 100.
1.40 * 100 = 140%
As a fraction: 140/100
Given the function f(a) = 5a + 14, solve for f(a) = 0.
Give an exact answer; do not round.
Answer:
a = 14
Step-by-step explanation:
Step 1: Write out your problem
f (a) = 5a + 14 | f (a) = 0
Step 2: Solve
f (a) = 5 (0) + 14 , Input a.
f (a) = 0 + 14 , 5 x 0 = 0
(a) = 14 , 0 + 14
a = 14
18x5 – 12x4 + 20x3 + 48x2
9x2
A coffee shop sells coffee to about 500 people every morning, but this can vary by as many as 60 people. On any given day, what are the maximum and minimum numbers of people expected to buy coffee?
Answer:
440 ≤ x ≤560
Step-by-step explanation:
|x−500|≤60Rewrite it as a compound inequality−60≤x−500≤60Solve for X by adding 500 to each side. -60+500≤x-500+500≤60+500Leaving you with 440≤x≤560Answer: The coffee shop is expected to serve a maximum of 560 customers and a minimum of 440 customers per morning.Consider the figure below were line PQ is parallel to line RS
Part A: Solve for a and justify your answer
Part B: Determine m<ABQ
Part C: Determine m<BCR
Plzzz HELP
Answer:
Step-by-step explanation:
A) Find the figure attached. According to the figure, since line PQ is parallel to line RS, then <CBQ = <DCS (corresponding angle)
Also <BCS + <DCS = 180° (sum of angles on a straight line)
Given
<BCS = (5a+14)° and <DCS = <CBQ =(2a-9)°
Substituting this values into the formula to calculate the value of a;
(5a+14)°+(2a-9)° = 180°
5a+2a+14-9 = 180
7a+5 = 180
7a = 180-5
7a = 175
a = 175/7
a = 25°
Hence the value of a is 25°
B) From the diagram <ABQ = <BCS = 5a+14 (corresponding angle)
Substitute a = 25 into the expression
<ABQ = 5(25)+14
<ABQ = 125+14
<ABQ = 139°
C) To get <BCR, we will use the formula;
<BCR + <BCS = 180
Given <ABQ = <BCS = 139°
<BCR = 180 - <BCS
<BCR = 180 - 139
<BCR = 41°
Answer:
Part A: 25
Part B: 139
Part C: 41
Step-by-step explanation:
5a+14+2a-9
a=25
5(25)+14
=139
2(25)-9
=41
Consider the diagram below. Name the angle 3 ways. Select all that apply.
ABC
A
BAC
CBA
CAB
C
B
Answer: A, BAC, CAB
Step-by-step explanation: A already says it’s an angle . BAC & CAB are congruent meaning they are equal . Hope this helped !
Abram rode in a cab for 9 miles. The taxi driver charged $2.50 for the first z
mile and $1.25 for each additional
mile.
How much did Abram pay for the cab ride in all?
Answer:
Abram payed $12.50 for the cab ride in all.
let f(x)=3x^2-2x+1 and g(x)=2x-3. find (fg) (x)
Answer:
(fg)(x)= 6x^3-13x^2+8x-3
Step-by-step explanation:
(fg)(x)= f(x).g(x)
(fg)(x)=(3x^2-2x+1).(2x-3)
(fg)(x)= (6x^3-9x^2-4x^2+6x+2x-3)
(fg)(x)= 6x^3-13x^2+8x-3
convert 325 milliliters to liters
Answer:
1000 milliliters in a liter, so 325 mL = 0.325 L
Step-by-step explanation:
49 × 11 = ________ elevens
Answer:
I believe the awnser is 539 total.
Step-by-step explanation:
If you take the 4 and times it by 1 you get 4.
Same with the nine.
But if you times 49 by 11 you get 539.
Hope this helps!
Find the product: -4/9 and -3/8
A. -1/9
B. -1/6
C. 1/6
D. 7/17
Answer:
C. 1/6
Step-by-step explanation:
negative times a negative is a positive
4 times 3 is 12
9 x 8 is 72
12/72 can be reduced to 1/6 because the top and bottom are both divisible by 12
Answer: 1/6 C
Step-by-step explanation:
Find the value of x help asap
Ilana ran 2 laps around the field in 8 minutes. What was her average speed, in laps per minute?
StartFraction 1 Over 10 EndFraction of a lap per minute
One-fourth of a lap per minute
4 laps per minute
10 laps per minute
Answer:
The Correct Answer is 1/4 .
Step-by-step explanation:
Because, She ran 2 Laps in 8 minutes, So if you split the 8 In half it's four, So she runs 1/4 of a lap per minute.
1/4
Step-by-step explanation:
si se reparten 7 tazas de pure entre8 bebes a cada bebe le tocan
Respuesta: [tex]\frac{7}{8}[/tex] de taza o 0.875 tazas
Explicación:
Repartir un número total de objetos entre personas implica dividir el total entre el número de personas. Es decir que en este caso las 7 tazas deben dividirse entre los 8 bebes. Esta división o partición puede representarse por medio de una fracción o por medio de una división:
Fracción: Esta situación puede ser representada como una fracción si se incluye el número total de bebés o partes a repartir como denominador (número de abajo) y el número de tazas o cantidad total como numerador.
[tex]\frac{7}{8}[/tex] de taza
División: Divida el total en la cantidad de partes a repartir
7 tazas ÷ 8 bebes = 0.875 tazas por bebé
so if I'm multiplying right. Would it be -2*2 or -2*-2
Here, we have the expression [tex]\frac{x^2 + 4}{2}[/tex] and we're asked
to evaluate the expression when x = -2.
To evaluate an expression, we simply plug
the value of the variable into the expression and solve.
So here, since x = -2, we have [tex]\frac{(-2)^2 + 4}{2}[/tex].
Notice that I used parentheses around the -2.
This is a good idea when substituting numbers in for variables.
Next, the order of operations tell us that exponent comes first.
So we have (-2)² which is 4.
So we have [tex]\frac{4 + 4}{2}[/tex].
Now when we have a division bar, it's important to understand
that it has the same effect on a problem as a set of parentheses
in that it groups terms together.
So this 4 + 4 can be thought of as being inside a set of parentheses.
So we can also write this as [tex]\frac{(4 + 4)}{2}[/tex].
Now simplify the top to get 8 and we have 8/2 which is 4.
Suppose you put $150 in the bank for 2 years at a 3% simple annual interest rate. How much interest will you have earned at the end of the two years? Enter your answer in the blank below.
Answer:
$9 in interest for a total of $159
Step-by-step explanation:
Row a has 8 seats. Each row behind row a had 4 more seats
Answer:
u have to finish the question ...
4/5 divided by 1/10?
Answer:
the answer to the question is 8
Louis is 6 times mary's age. If the difference in their ages is 20 how old is louis
Answer:
louis age is 26
Step by step explanation:
their difference = 20
and Louis is 6 times
then 20 + 6 = 26
Louis is [tex]6[/tex] times Mary's age. If the difference in their ages is 20 then Louis is [tex]24[/tex] years old.
What is age?Age is defined as the length of time that somebody has lived or that something has existed.
Let,
Mary's age [tex]=x[/tex] years
So, Louis' age [tex]= 6x[/tex] years
According to question,
[tex]6x-x=20[/tex]
[tex]5x=20[/tex]
[tex]x=4[/tex]
So, Louis' age [tex]= 24[/tex] years
Hence, we can say that Louis is [tex]24[/tex] years old.
To learn more about ages click here
https://brainly.com/question/91727
#SPJ2
that’s what i need help with
Answer:
W=-3 because negative divided by a negative equals a positive
Step-by-step explanation:
Hope this helps!!!
which Best describes the rule for this pattern 1, -12, 12, -1, . . .
Started at −20° and rose 1° each minute
Answer:
-20+1 every minute
Step-by-step explanation:
Given:
PQ
⊥
QR
, PR = 20,
SR = 11, QS = 5
Find: The value of PS. EXTRA POINTS
Answer:
[tex]PS=13\text{ units}[/tex]
Step-by-step explanation:
So, we know that PR is 20, SR is 11, and QS is 5.
We also know that PQ is perpendicular to QR, forming the right angle at ∠Q.
We know all the side lengths except for PQ and PS (the one we want to find). Notice that if we find PQ first, we can then use the Pythagorean Theorem to find PS since we already know QS.
So, let's find PQ.
We can see that we can also use the Pythagorean Theorem on PQ. PQ, QR, and PR (the hypotenuse) will be our sides. So:
[tex](PQ)^2+(QR)^2=(PR)^2[/tex]
We know that PR is 20.
QR is the combined length of QS+SR, so QR is 5+11 or 16.
So, substitute:
[tex](PQ)^2+(16)^2=(20)^2[/tex]
Solve for PQ. Square:
[tex](PQ)^2+256=400[/tex]
Subtract 256 from both sides:
[tex](PQ)^2=144[/tex]
Take the square root of both sides:
[tex]PQ=12[/tex]
So, the side length of PQ is 12.
Now, we can use the Pythagorean Theorem again to find PS. Notice that PQ, QS, and PS also form a right triangle, with PS being the hypotenuse. So:
[tex](PQ)^2+(QS)^2=(PS)^2[/tex]
We already know that QS is 5. We also just determined that PQ is 12. Substitute:
[tex](12)^2+(5)^2=(PS)^2[/tex]
Square:
[tex]144+25=(PS)^2[/tex]
Add:
[tex]169=(PS)^2[/tex]
Take the square root of both sides:
[tex]PS=13[/tex]
Therefore, the length of PS is 13 units.
And we're done!
The answer to this is PS=13.
use left to right elimination to solve the system of equations
x-3y+4z=-8
y-3z=11
y+5z= -37
select the correct choice below and fill in any answer boxes within your choice
A. the one solution is x=
Answer:
x=11
y=-7
z=-6
Step-by-step explanation:
y=11+3z
x-33-5z=8
11+8z=-37
z=-6
x-3=8
y=-7
x=11
Which of the following expressions shows how to rewrite 4 - 5 using the addtive inverse and displays the expression correctly on a number line
Answer: 4 - 5 = 4 + (-5) = -1
Step-by-step explanation: You have to make the 5 into a negative number using parenthesis and do the math.
Answer:
4+(-5)
Step-by-step explanation:
Here is the number line
write 3 + 2 x 1/10 +4 x 1/1000 in standard form
The standard form of [tex]3+2 \cdot \frac{1}{10} +4 \cdot \frac{1}{1000}[/tex] is 3.204
Explanation :
Given : [tex]3+2 \cdot \frac{1}{10} +4 \cdot \frac{1}{1000}[/tex]
Lets convert fractions into decimals
[tex]\frac{1}{10} =0.1\\\frac{1}{1000}=0.001[/tex]
Now 2 times 0.1 becomes 0.2
Also 4 times 0.001 becomes 0.004
So the given expression becomes
[tex]3+2 \cdot \frac{1}{10} +4 \cdot \frac{1}{1000}\\3+2 \cdot 0.1+4 \cdot 0.001\\3+0.2+0.004\\3.204[/tex]
Learn more : brainly.com/question/14426774
Suppose that in a sample of 50 college students in Illinois, the mean credit card debt was $346. Suppose that we also have reason to believe (from previous studies) that the population standard deviation of credit card debts for this group is $108. Use this information to calculate a 95% confidence interval for the mean credit card debt of all college students in Illinois.
Answer:
A 95% confidence interval for the mean credit card debt of all college students in Illinois is [$316.06, $375.94] .
Step-by-step explanation:
We are given that in a sample of 50 college students in Illinois, the mean credit card debt was $346. Suppose that we also have reason to believe that the population standard deviation of credit card debts for this group is $108.
Firstly, the pivotal quantity for finding the confidence interval for the population mean is given by;
P.Q. = [tex]\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }[/tex] ~ N(0,1)
where, [tex]\bar X[/tex] = sample mean credit card debt = $346
[tex]\sigma[/tex] = population standard deviation = $108
n = sample of college students = 50
[tex]\mu[/tex] = population mean credit card debt
Here for constructing a 95% confidence interval we have used a One-sample z-test statistics because we know about population standard deviation.
So, a 95% confidence interval for the population mean, [tex]\mu[/tex] is;
P(-1.96 < N(0,1) < 1.96) = 0.95 {As the critical value of z at 2.5%
level of significance are -1.96 & 1.96} P(-1.96 < [tex]\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }[/tex] < 1.96) = 0.95
P( [tex]-1.96 \times {\frac{\sigma}{\sqrt{n} } }[/tex] < [tex]{\bar X-\mu}} }[/tex] < [tex]1.96 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ) = 0.95
P( [tex]\bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } }[/tex] < [tex]\mu[/tex] < [tex]\bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ) = 0.95
95% confidence interval for [tex]\mu[/tex] = [ [tex]\bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } }[/tex] , [tex]\bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ]
= [ [tex]\$346-1.96 \times {\frac{\$108}{\sqrt{50} } }[/tex] , [tex]\$346+1.96 \times {\frac{\$108}{\sqrt{50} } }[/tex] ]
= [$316.06, $375.94]
Therefore, a 95% confidence interval for the mean credit card debt of all college students in Illinois is [$316.06, $375.94] .
what is 20 x 10 to the power of 5
Answer:
2000
Step-by-step explanation: