Answer:
r = -1
Step-by-step explanation:
-3(1+6r)=14-r
Distribute the -3
-3*1 -3*6r = 14-r
-3 -18r = 14 -r
Add 18r to each side
-3-18r+18r = 14-r+18r
-3 = 14+17r
Subtract 14 from each side
-3-14 = 14+17t-14
-17 = 17r
Divide by 17
-17/17 = -17r/-17
-1 =r
Divide 84 pens into the ratio 5:9.
Add the fractions.
1/2+ 1/12
Answer:
1283/1000
Step-by-step explanation:
or 2/14
Answer
7/12
Step-by-step explanation:
What is the product of (–8.2)(1.9)?
–15.58
–6.3
6.3
15.58
Answer:
-15.58
Step-by-step explanation:
Answer:
-15.58
Step-by-step explanation:
Multiply the traditional way
-8.2
x1.9
-------
738
820
----------
15.58
But because you're multiplying a positive and a negative, the answer will be negative leaving you with (-15.58)
Please anyone help anyway you can
Can someone help me with this please?
9514 1404 393
Answer:
see below
Step-by-step explanation:
The applicable properties of exponents are ...
(a^b)^c = a^(bc)
(a^b)(a^c) = a^(b+c)
(a^b)/(a^c) = a^(b-c)
__
[tex](-2^2)^{-6}\div(2^{-5})^{-4}=2^{-12}\div2^{20}=2^{-12-20}=\boxed{2^{-32}}\\\\2^4\cdot(2^2)^{-2}=2^{4+2(-2)}=2^0=\boxed{1}\\\\(2^2)^2\cdot (2^3)^{-3}=2^{2(2)+3(-3)}=2^{4-9}= \boxed{2^{-5}}\\\\(-2^{-4})^{-2}\cdot(2^2)^0=2^{(-4)(-2)}\cdot 1= \boxed{2^8}[/tex]
__
Please note that ...
[tex](-2^2)^{-6}=\dfrac{1}{(-4)^6}=\dfrac{1}{4096}=2^{-12}[/tex]
That is, since the outside exponent is even, the sign is immaterial. This is also true for the other expression containing -2. The result is positive.
MARKING BRAINLIESTPLZZ HELP ME W MY MATH
Answer:
As BVC is similar to RJC
from BV/RJ=BC/RC=Y/8=13.5/9=108/9=12
Y=12
Which expression is equivalent to 24 x 2 - 22 x + 5?
Answer:
26x+5
Step-by-step explanation:
The music artist known as “The Weekend” purchased a lot of bandages in January. The city where he purchased the bandages charges 12% sales tax. He paid $28.89 in sales tax. What was the cost of the bandages before sales tax was added on? What was the total amount The Weekend has to pay?
Answer:
240.75
Step-by-step explanation:
i might be wrong l mao
The total cost y varies directly with the number items x sold. Write a direct variation equation if
the item cost $2.35.
Answer:
xy = 2.35
Step-by-step explanation:
4. Which must be true of a scale factor of a dilation if the image is
smaller than the pre-image?
a. The scale factor is negative.
b. The scale factor is between – 1 and 0.
C. The scale factor is between 0 and 1.
d. The scale factor is greater than 1.
6x - 5 + x
No one:
Someone when I answer the question right:
Answer: 7x - 5
Step-by-step explanation:
The expression given in the question is:
= 6x - 5 + x
We have to collect like terms. This will be:
= 6x + x - 5
= 7x - 5
Can somebody help me please
Answer:
It’s in between 95 and 100
Step-by-step explanation:
Not sure where though
Independent Practice
In 2002, the price of mailing a letter was $.34 for the first ounce or part of an ounce and $.21 for each ounce or part of an ounce after the first ounce.
Write a rule to describe the function. How much did it cost to mail a 4-ounce letter?
A.
f(x) = 0.21(x – 1); $.63
B.
f(x) = 0.34 + 0.21x; $1.18
C.
f(x) = 0.34 + 0.21(x – 1); $.97
D.
f(x) = 0.34x + 0.21(x – 1); $1.99
Answer:
C.
f(x) = 0.34 + 0.21(x – 1); $.97
Step-by-step explanation:
In 2002, the price of mailing a letter was $.34 for the first ounce and $.21 for each ounce after the first ounce. Write a rule to describe the function.
---------------------------------------
Price = 0.34 + 0.21(x-1) where x is the weight of the item in ounces.
Let +x+ = weight of the letter in ounces
Let +P+ = the price of mailing the letter in dollars
---------------------------------------
+P+=+.34+%2B+.21%2A%28+x+-+1+%29+
( +x+%3E=+1+ )
-----------------------------
A 4-ounce letter costs
+P+=+.34+%2B++%28+4+-+1+%29%2A.21+
+P+=+.34+%2B+.63+
+P+=+.97+
It costs $.97
Can you divide any number by zero?
Answer:
well basically no so i say no
Step-by-step explanation:
you can but you wouldn't get a answer because you would only get the same answer so..
Answer:
When we try to divide by zero, things stop making sense
Step-by-step explanation:
At one store, a 2-liter bottle of soda costs $2.12. At another store, a 3-liter bottle costs $3.15. Which bottle is a better deal? Write a division equation for each 2-liter bottle, and then decide which is the better deal.
Answer:
The 3 liter bottle has a better deal
Step-by-step explanation:
Which bottle is a better deal?
For the 2 liter bottle
At one store, a 2-liter bottle of soda costs $2.12.
2 liter bottle = $2.12
1 liter bottle = x
Cross Multiply
2x = $2.12
x = $2.12/2
x = $1.06
Hence, this is $1.06 per liter
For the 3 liter bottle
At another store, a 3-liter bottle costs $3.15.
3 liter bottle = $3.15
1 liter bottle = x
Cross Multiply
3x = $3.15
x = $3.15/3
x = $1.05
Hence, this is $1.05 per liter
Therefore, the bottle which is a better deal is the 3 liter bottle because, 1 liter goes for $1.05
Barry bought a wooden board that measured 8 feet in length. He cut off a piece that measured
65 feet. How much of the board was left?
Answer:
-57
Step-by-step explanation:
If he had an 8 ft board and cut 65 ft off it would be -57.
1. Theresa and Cary are saving for a printer. Theresa has $10 in the bank and will save $20
month. Cary has $25 in the bank and will save $15 each month.
A) How much does Theresa have at month #O?
B) How much Does Cary have at month #0?
C) Write an equation to represent Theresa's saving and an equation to represent Cary's
savings.
D) Graph both Theresa's and Cary's equations on the coordinate plan below.
Introduction to Solving Systems of Equations Theresa and Cary are saving for a printer. Theresa has $10 in the bank and will save $20 each month. Cary has $25 in the bank and will save $15 each month. 1. How much does Theresa have at month #0710 2. How much does Cary have at month #obA 3. Fill in the table for several months. Then graph the data. Use a different color for each girl's table values and graph. Label and scale the axes appropriately Theresa Ca Total Total Month # | Month # | savings in $ (x) savings in $ 0 0 2 2 5 6 6 S 7 4. Write an equation that represents Theresa's savings. yoxtl 5. Write is an equation that represents Cary's savings. tS Which girl is saving at a faster rate? Justify your answer by referring to the 6. table, the graphs, and the equations. 7. At which months does Theresa have more money? 8. At which months does Cary have more money? 9. At which month do they have the same amount of money? What do you notice about the graphs at this month? Introduction to Solving Systems of Equations con... Two friends, Malcolm and Zeke, are going to the park that is near their school. They leave at the same time from different locations. Malcolm is 30 meters from the school on his way to the park, and he is walking at the rate of 1 meter per second. Zeke is at school and will jog to the park at a rate of 4 meters
Convert each to a standard number:
i) 25%
ii) 43.2%
iii) 0.02214%
iv) 2%
Answer:
a
Step-by-step explanation:
Answer:
i. 1/4
ii. 54/125
iii. 1107/5000000
iv. 1/50
Step-by-step explanation:
i.
25% = 0.25
0.25 = 25/100
25/100 (GCF 25) = 1/4
ii.
43.2% = 0.432
0.432 = 432/1000
432/1000 (GCF 8) = 54/125
iii.
0.02214% = 0.0002214
0.0002214 = 2214/10000000
2214/10000000 (GCF 2) = 1157/5000000
iv.
2% = 0.02
0.02 = 2/100
2/100 (GCF 2) = 1/50
Gavyn drives at a speed of 50 miles per hour how long will it take to drive 225 miles
Answer:
:4.5 hoursStep-by-step explanation:225 divided by 50 = 4.5
Answer:
its 4 hours and 30 minutes
Step-by-step explanation:
if 50 is equvalemt to 1 hour then 225 divide by 50 then the answer was 4.5 and the 4.5 is equal to 4 hours and 30 minutes
mark me
Which is the same as 10/3?
Answer:
3.33 repeating or 3 and 1/3
Step-by-step explanation:
If you divide 10 by 3 you get a repeating decimal of 3.3333...
or if you make the fraction into a mixed number, it would be 3 and 1/3
If Evan wants 5/8 mile to his friends house then together they walked 7/12 mile to the movie theater which pair of fractions can avenues to find how far they walked in all
Answer:
5/8 + 7/12
Step-by-step explanation:
Miles to friends house = 5/8
Ditance to the movies = 7 1/2
To find the total distance walked in Wal, we sun the fraction of distance Evans walked to his friend's house and the distance walked from friend's house to the movies ;
That is :
5/8 + 7/12
= 29/24 miles
Help me and you get 100 points and Brainliest
The table shows the test scores and the sleep averages of several students.
a. Write the least squares regression equation that models the data. Let x = hours of sleep and y = test score.
b. Use the equation to determine the approximate test score of a student who sleeps an average of 8 h a night. Show your work.
hey someone else has already answered this!
a. To find the least squares regression equation for a group of (x,y) points:
Step 1: For each point(x,y), we need to calculate x² and xy first.
Step 2: Sum all x, y, x² and xy, which gives us Σx, Σy, Σx² and Σxy
Step 3: Calculate Slope m: m = (NΣxy − Σx Σy)/ N(Σx²) − (Σx)² , here N is the number of data.
Step 4: Calculate Intercept b: b = Σy − m(Σx)/ N
Step 5: Assemble the equation as y= mx+b
Here, we have ∑x = 120, ∑y= 1379, ∑x²= 919.5, ∑xy= 10466 and N= 16
So, m= (NΣxy − Σx Σy)/ N(Σx²) − (Σx)²
=
=
=
= 6.33
and b = Σy − m(Σx)/ N
=
=
=
= 38.71
So, the least squares regression equation is : y= mx+b ⇒ y= 6.33x +38.71
b. When x= 8, then y= (6.33×8)+38.71 = 50.64 + 38.71 =89.35
The approximate test score of a student who sleeps an average of 8 h a night is 89.35%
EVERYTHING IS FROM sicista on brainly!
Answer:
A way to write the least regression equation that models is data y = mx + b => y= 6.33x + 38.71 and as for problem B when X = 8 then y = (6.33 x 8) + 38.71 = 50.64 = 38.71 = 89.35 so the estimated test score of a student who sleeps eight hours a night is equal to 89.39%
Step-by-step explanation:
SOLVE RIGHT NOW PLEASE. Determine the solution to the system of equations below by using the ELIMINATION METHOD.
6x+5y=39
3x+5y=27
Answer: x=4 and y=3
Step-by-step explanation:
We start eliminating the same numbers with the same variable. So we take out 5y on both equation. We then subract 3x to 6x and we do the same to the right side. We end up having 3x=12 and then we divide 12/3=4. We plug 4 on the x values in one of the equation to find out the y value on that equation. You end up with y=3 and then plug that in the same equation on both to see if its right. Finally after that its correct.
Which student is correct and why arethey correct?
Answer:
still no work shown man
Step-by-step explanation:
i cant help you if you do not give us any images or type the problem in
through: (0, 3) and (3, -1)
Answer:
6 i think.
Hope this helps!
25% of a population have pets. What is the probability that the next person you speak to has pets?
Answer: I d k
Step-by-step explanation:
Answer:
25
explanation:
just because
Which shows the image of rectangle ABCD after the rotation (x, y) → (–y, x)?
Answer:
The answer is A
Step-by-step explanation:
I got it right
Answer:
Answer choice A is correct.
Step-by-step explanation:
I'm smort UwU
3/5 of the students in a classroom are girls if there are 10 boys in the class about how many total students are there
Answer:
25
Step-by-step explanation:
25 students total.
3/5 = 15 (Girls)
2/5 = 10 (Boys)
Answer:
25 students in total..........
Omlll I need help with all of these but like you don’t have to answer all of them lol
Answer:
For 17 the first answer is 1(1/20). The picture can be misleading because the flags are at the same height and the American flag's pole looks shorter. This is only because it is behind the Floridian flag and because the perspective isn't accurate to compare them.
Step-by-step explanation:
The mixed fraction would be 1(5/100) which can be simplified when you divide the fraction by 5 into 1(1/20).
One angle of an isosceles triangle measures 28º. Which other angles could be in that
isosceles triangle? Choose all that apply.
76°
190
1249
28°
Answer:
28
Step-by-step explanation: