Answer:
-3a + 6 + 36a = 32a + 4
a = - 2
-7x + 5y = 1
10x - 8y = 2
x = -3
y = -4
Hope that helped :)
what is the value of 10x^3 y^2 when x=-2 and y=-3
Answer:
-720
Step-by-step explanation:
We are given the expression:
[tex]10x^3y^2[/tex]
and asked to evaluate when x= -2 and y= -3.
Therefore, we must substitute -2 for x and -3 for y.
[tex]10(-2)^3*(-3)^2[/tex]
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.
Evaluate the first exponent.
⇒ (-2)³ = -2 * -2 * -2= 4*-2= -8
[tex]10(-8)*(-3)^2[/tex]
Evaluate the second exponent.
⇒ (-3)²= -3 * -3= 9
[tex]10(-8)*9[/tex]
Multiply 10 and -8.
[tex]-80*9[/tex]
Multiply -80 and 9.
[tex]-720[/tex]
The value of 10x³y² at x= -2 and y= -3 is -720
A cashier made $86 after an 8-hour shift. Find the unit rate of the cashier's salary and use it to determine how much the employee would make after 20 hours of work.
Answer:
215
Step-by-step explanation:
if you divide 86 by 8 you should get 10.75 then once you find that, you will multiply 20x10.75 and you should get 215
Estimate the square root of 25. Round to the nearest hundredths place. Show your work!
Answer:
5.00
Step-by-step explanation:
Therefore, the square root of [tex]25[/tex] so the square root of [tex]5.[/tex].
What is the square root?
A square root of a number [tex]x[/tex] is a number [tex]y[/tex] such that [tex]y = x[/tex]; in other words, a number [tex]y[/tex] whose square.
Here given number is [tex]25[/tex] so the square root of [tex]\sqrt{25}=5[/tex].
Hence, the square root of [tex]25[/tex] so the square root of [tex]5.[/tex].
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The price of an item has been reduced by 80% the original price was $20. What is the price of the item now ?
Answer:
Step-by-step explanation:
80% = 80/100 which also = 4/5
so the price was reduced by 4/5
20 minus 4/5 is = to 20 minus 16/20
which is 20/20 minus 16/20 = to 4/20
simplified is 4 dollars
PLEASE HELP Solve for w and simplify your answer.
Answer:
see below (I hope this helps!)
Step-by-step explanation:
To get rid of the coefficient of w, 3/2 in this case, we must divide the entire equation by 3/2, which is the equivalent of multiplying the entire equation by 2/3. Doing this, we get:
3/2w * 2/3 = -20 * 2/3
w = -40/3 = [tex]-13\frac{1}{3}[/tex]
make m the subject of the relation. k=√m-y/m+1
Answer:
Make m the subject of the expression below; 3. Make v the subject of the relation; 4. Given that v 2 = u 2 + 2as, express a in terms of u, v and s. Hence, find the value of a when u = 15, v = 20 and s = 5. 5. An expression is given as.
Author: Toolbar
Step-by-step explanation:
f(x) = x² – 3x; Find f(-8)
evaluate 4+8/2x(6-3)
Answer:
4+8 = 12 , 6-3 = 3 , 2 x 3 = 6 , 12/6 = 2
the answer is 2
The expression 4 + 8 / 2 x (6 - 3) is equivalent to 16.
What is BOD MAS rule?The Bodmas rule is arranged according to the letters in the acronym BOD MAS, which stand for brackets, order of powers or roots, division, and multiplication. A stands for addition and S for subtraction. According to the BOD MAS rule, mathematical equations containing numerous operators must be resolved in the BOD MAS order, starting from the left.
The given expression is,
4 + 8 / 2 x (6 - 3)
Solve by using BODMAS rule,
4 + 8 / 2 x 3
Further solve,
4 + 4 x 3
4 + 12
16
The simplified value of the given expression is 16.
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Select each pair of functions that are inverses of each other. f (x) = left-brace (negative 5, negative 9), (negative 3, negative 4), (0, 1), (3, 7), (6, 13) right-brace. G (x) = left-brace (negative 9, negative 5), (negative 4, negative 3), (1, 0), (7, 3), (13, 6), right-brace. f (x) = x + 7; g (x) = x minus 7 2 2-column tables with 4 rows. Table 1 is titled f (x). Column 1 is labeled x with entries 2, 3, 4, 5. Column 2 is labeled y with entries 3, 8, 15, 24. Table 2 is titled g (x). Column 1 is labeled x with entries 5, 4, 3, 2. Column 2 is labeled y with entries 24, 15, 8, 3.
Answer:
The first two pairs of functions are inverse of each other
Step-by-step explanation:
Inverse functions?
1...................................
f(x) = {(-5, -9), (-3, -4), (0,1), (3,7), (6,13)}
g(x) = {(-9,-5), (-4, -3), (1,0), (7,3), (13,6)}
Yes, this pair is inverse as all points of the functions have inverse values2...................................
f(x) = x + 7 is given
Inverse of f(x) is
x = f'(x) + 7 ⇒ f'(x) = x - 7Since g(x) = x - 7 it is inverse with f(x)
Yes, this pair is inverse as described above3...................................
Data of f(x) and g(x)
x = {2, 3, 4, 5} f(x) = {3, 8, 15, 24}
x = {5, 4, 3, 2} g(x) = {24, 15, 8, 3}
No, as both functions have same domain and rangeexample is f(2) = 3 and g(2) = 3 as per table10∧-4 Simplified and what law did you use?
10 ^-4
Use the negative exponent rule to get:
1/10^4 = 1/10,000 (fraction answer) or 0.0001 (decimal answer)
What type of number is -15/3
Answer:
-5, a negative number
Step-by-step explanation:
solve for the missing missing variable C=2πr; C=18.84, π=3.14
Answer:
The missing variable r = 3
Step-by-step explanation:
C = 2πr
Where,
C = 18.84
π = 3.14
r= ?
The missing variable is r
C = 2πr
Making r the subject
r = C / 2π
= 18.84 / 2*3,14
= 18.84 / 6.28
= 3
r = 3
The missing variable r = 3
Check:
C = 2πr
18.84 = 2*3.14*3
18.84 = 18.84
0.18 as a fraction simplest form
Answer:
9/50
Step-by-step explanation:
First, convert the decimal into a fraction. In this case, convert .18 to 18/100. Find a common factor between the numerator and denominator, which in this case, would be 2. Divide both the numerator and denominator by 2 to get 9/50. 9/50 can't be simplified further, so this is your answer.
Answer:
[tex]\frac{9}{50}[/tex]
Step-by-step explanation:
0.18 is [tex]\frac{18}{100}[/tex].
Let's simplify the fraction:
[tex]\frac{18}{100}= \frac{18/2}{100/2}=\boxed{\frac{9}{50}}[/tex]
Hope this helps.
slove for x 2x+13=-54
Answer:
x = -33.5
Step-by-step explanation:
2x+13=-54
Subtract 13 from each side
2x+13-13=-54-13
2x = -67
Divide by 2
2x/2 = -67/2
x = -33.5
Answer:
x= -33 1/2 (-33.5)
Step-by-step explanation:
2x+13=-54
2x+13-13=-54-13
2x=-67
x=-67/2
x= -33 1/2 (-33.5)
What is the mean of the height 81,88,69,65,87
Answer:
C. 78 cm
Step-by-step explanation:
The mean of any given data set is calculated as sum of all data set divided by the number of data set given.
The data set for the height of Bella's corn given, is 81, 88, 69, 65, 87
Mean height of Bella's corn = [tex] \frac{81 + 88 + 69 + 65 + 87}{5} [/tex]
[tex] mean = \frac{390}{5} [/tex]
[tex] mean = 78 cm [/tex]
You are required to calculate the mean of the height, in other words, the average of the height
The mean of the height is 78
Given height
81, 88, 69, 65, 87
Mean = Total height / number of height
= (81 + 88 + 69 + 65 + 87) / 5
= 390 / 5
= 78
Mean of the height = 78
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Mrs. Bell has an interest rate of 4.175% on her house. Mr. Bentley has an interest rate of 4.25% on his house. Which explains who has the lower interest rate?
Answer: Mrs Bell
Step-by-step explanation:
From the question, we are informed that Mrs. Bell has an interest rate of 4.175% = 0.04175 on her house and Mr. Bentley has an interest rate of 4.25% = 0.0425 on his house.
The person who has the lower interest is Mrs Bell. This is because 4.25% is higher than Mrs Bell's interest of 4.175%
Answer:
The answer is D
Step-by-step explanation:
Mrs bell has the lower interest rate because both decimals have a 4 in the ones place, and 1 tenth is less than 2 tenths.
-10(2r-4) what is the answer
Answer: -20r + 40
Step-by-step explanation:
multiply by the variable
-20r + 40
-10 x 2r = -20r
-10 x -4 = 40
Answer:
the answer to your question is: -20r + 40
Darenda worked for three weeks. The shaded part of the model represent the fraction of each week for she worms The shaded part of the model represent the fraction of each week for she worked from her home office. Which expression can be used to determine the number of weeks Darenda work from home office over these three weeks
for that it is 3 x 3/7
Answer:
3 x 3/7 is the answer but on your paper u can just say D hope this helps
Matt collected 18 fewer football cards than Steven. Matt collected 63 cards, how many cards did Steven collect
Points P,Q,R,and S are collinear. Point Q is between P and R, R is between Q and S. If PS=25, and PR=19, what is the value of QR
Answer:
13Step-by-step explanation:
The questions is incomplete. Here is the complete question.
Points P,Q,R,and S are collinear. Point Q is between P and R, R is between Q and S where PQ ≈ RS. If PS=25, and PR=19, what is the value of QR
If points P,Q,R,and S are collinear, this means that the four points lies on the same straight line.
If Point Q is between P and R, then PQ+QR = PR ........... 1
Also if R is between Q and S, then QR+RS = QS ...... 2
Given
PS=25
PR=19
RS = PS-PR
RS = 25-19
RS = 6
Since PQ ≈ RS
Hence PQ = RS = 6
From equation 1;
PQ+QR = PR
substituting the resulting values
6+QR = 19
QR = 19-6
QR = 13
Hence the value of QR is 13
I am in a subset of rational numbers, I am not negative, I am a whole number, I am not a natural number, what number am I?
Answer:
0
Step-by-step explanation:
0 is considered a whole number, but it is not a natural number. The natural numbers start at +1 and go forward. ) is not positive or negative, but being that it is a whole number, it is also a rational number.
Hello :) how to do (bii)?
Answer:
bii) [tex] \frac{3118x^{2} }{1225} cm^{2} [/tex]
Please see the attached pictures.
*x represents the estimated distance on Map A
Please help me quick!!!!!!
please please help !!! will give brainliest to first correct answer
Answer:
[See Below]
Step-by-step explanation:
❶ It is irrational because to make it repeating it must be EXACT. In this case it is adding a 0 after every 1. So it'd be irrational since it doesn't have an end.
❷ Irrational because no one knows the end of pi. It doesn't have an ending so therefore irrational.
~Hope this helps Mate. If you need anything feel free to message me.
Carrie sees a dress she wants that usually sells for $109. The dress is on sale at 15% off and sales tax is 6.5%. How much will Carrie need to purchase the dress?
Answer:
$98.67
Step-by-step explanation:
109(.15)= $16.35 You multiply by .15 to find out what 15% of the total (109) is going to be discounted.
109-16.35= 92.65 You subtract the discount from the total to come up with the new total.
92.65(1.065)= 98.67225 =98.67 You take the discounted total, 92.65, and multiply it by 1.065 which represents how you will will be paying for sales tax.
5 Select the correct answer. Michael had $550 in his savings account. He took out $30.75 every month for one year. What is the net change in Michael's account balance following these withdrawals? A $519.25 B. $369 O c. $369 OD. $519.25 Reset Next
Answer:
C.369
Step-by-step explanation:
one year is 12 months and he took out 30.75 every month so
30.75 multiplied by 12 is 369
its C
Which of the following statements is the most precise and correct to define an angle?
Answer:
C
Step-by-step explanation:
Answer:
the exact degree of a rotation of a geometric figure in a coordinate plane
Step-by-step explanation:
Which algebraic expression is a difference with two terms?
O A. 6(x+5)
OB. 6 + x-9
O C. 6x - 9
O D. 9x6
Answer:
6x-9
the- sign makes it a difference and the two terms are 6x and 9
if g(x) = 3 - 2x find, g(-1)
Steps to solve:
g(x) = 3 - 2x when g(-1)
~Substitute
g(-1) = 3 - 2(-1)
~Simplify
g(-1) = 3 - (-2)
~Simplify
g(-1) = 3 + 2
~Add
g(-1) = 5
Best of Luck!