Answer:
It's C
Step-by-step explanation:
When you multiply - 2 to what you have in the brackets you get - 2x - 10
Hope this helps, have a wonderful day
Kay spends 250 min/wk exercising. Her ratio of time spent on aerobics to time spent on weight training is 3 to 2. How many minutes per week does she spend on aerobics? How many minutes per week does she spend on weight training?
Time spent on aerobics is 150 minutes per week and time spent on weight training is 100 minutes per week
Solution:
Given that,
Kay spends 250 min/wk exercising
Therefore,
Exercising = 250 minutes per week
Ratio of time spent on aerobics to time spent on weight training is 3 to 2
Aerobics : weight training = 3 : 2
Let the time spent on aerobics be 3x
Let the time spent on weight training be 2x
Thus,
3x + 2x = 250
5x = 250
x = 50
Thus,
Time spent on aerobics = 3x = 3(50) = 150
Time spent on weight training = 2x = 2(50) = 100
Thus, Time spent on aerobics is 150 minutes per week and time spent on weight training is 100 minutes per week
An airplane is 4,000 feet above the ground. It begins to descend at a rate of 140 feet per minute. How many minutes will it take until the plane is 2,600 feet above the ground?
Answer:
10 minutes!
Step-by-step explanation:
140 * 10(min) = 1,400
4000 - 1,400 = 2,600 ft
so will take 10 minutes for the plane to descend 1,400 ft
Answer:
10 minutes
Step-by-step explanation:
in five minutes it will descend by 700 feet so multiply that by 2 you get 1400 and thats how much to add and thats 10 minutes so 10
using the substitution property of equality, if y= -5 and 7y + x = 11, then ___
The sum of three consecutive numbers is 84. What is the largest of these numbers? (5 points) a 28 b 26 c 29 d 27
Answer:
The answer is c.29
Step-by-step explanation:
I used Google xD
Answer:
Largest number = 29
Step-by-step explanation:
Let the consecutive numbers by (x + 1) ; (x + 2) and (x +3)
x +1 + x + 2 + x + 3 = 84 {Combine like terms}
x + x +x + 1 + 2 + 3 = 84
3x + 6 = 84
3x = 84 - 6
3x = 78
x = 78/3
x = 26
Largest number = x + 3 = 26 + 3
=29
can someone please help :/ the people in my group are being mean,, ill mark you brainlest
Answer: 6.25 ounces. You're right
Step-by-step explanation:
43.75 ÷ 7 = 6.25
you can check by multiplying: 7 × 6.25 = 43.75
dang. Yall need to stop harrassing a girl for what she asks for. If she asks for perfume, she gets perfume. Nothing wrong with that. Comment if you agrreee/
Answer:
._.
Step-by-step explanation:
If she has money, she gets stuff. If she broke, doesn't work/help, and expects another person to buy it for her, she ain't gonna get anything. Either way, she better work for that perfume.
Answer:
h*ll yes theyre still human i dont know why people care about that stuff
Step-by-step explanation:
if they deserve it then who cares
A. what is the product of 4 and b?
B. The sum of 1/5 of m and 2/5 of m
Answer:
Step-by-step explanation:
a) 4 * b = 4b
B)
[tex]\frac{1}{5}m+\frac{2}{5}m=\frac{1+2}{5}m\\\\=\frac{3}{5}m[/tex]
Sophie and Marcos are each saving for new bicycles. So far,
Sophie has $10 saved and can earn $5 per hour walking
dogs. Marcos has $4 saved and can earn $8 per hour at his
family’s nursery.
a. Write an equation for each individual.
b. After how many hours of work will Sophie and Marcos
have saved the same amount?
c. What will that amount be?
a. Sophie's equation: 10+5a=b
Marcos' equation: 4+8a=b
a=number of hours b=total needed for bike
b. a=2 for their totals to be the same.
c. b=20 for their totals to be the same.
work:
10+5(2) > 10+10 > 20
4+8(2) > 4+16 > 20
17,12,13,14 whats the middle
Answer:
6.75
Step-by-step explanation:
Put them in order from least to greatest
12, 13, 14, 17
Add the middle numbers together
13+14=27
Divide the amount of numbers in the set
27/4=6.75
Hope this helps. Have a nice day. May it be filled with joy and happiness. Please, stay safe and wash your hands. Happy Holidays.
How do I solve for x
22\10=(7x-1)\(3x+1)
66x+22=70x-10
4x-32=0
4x=32
X=8
Can someone help plz
Answer:
84g
Step-by-step explanation:
399÷19=21
21 x 4 = 84
what is the value of sin 70
0.77389068155
EXPLANATION
sin 70 = 0.77389068155
Can you help with 3,5,6 please Also can you explain how you did 5 please I dont understand well
Answer:
3) 46 5) 19.5 6) 31.2
Step-by-step explanation:
all the "y" numbers are the product of the "x" numbers being added or subtracted by something. In 5, y=x-1.5
what is 331.5 pages in 8.5 weeks simplified
9514 1404 393
Answer:
39 pages per week
Step-by-step explanation:
(331.5 pages)/(8.5 weeks) = 39 pages/week
(2, 6) & (2,7)
Find the slope
Answer:
1/0 or undefined (use undefined)
Step-by-step explanation:
7-6= 1/0
2-2=
1/0 isn't a real slope so it's undefined...
Alexia spent 3 minutes working on each of her math problems and 4 minutes on each of her science problems. Her homework took her more than 60 minutes to complete. The boundary line for the inequality 3x + 4y > 60 is shown.
A graph shows number of math problems on the x-axis, from 0 to 20, and number of science problems on the y-axis, from 0 to 16. A dashed straight line has a negative slope and goes through (4, 12) and (12, 6).
Which statement could be true in this situation?
Alexia completed 8 math problems and 9 science problems.
Alexia completed 4 math problems and 6 science problems.
Alexia completed 20 math problems and 10 science problems.
Alexia completed no math problems and 15 science problems.
Answer:
C
Step-by-step explanation:
Help plz. 4x^2-10x=84
Answer:
my brain just died sorry
Step-by-step explanation:
Answer:
x = 6
4x2−10x=84
Step 1: Subtract 84 from both sides.
4x2−10x−84=84−84
4x2−10x−84=0
Step 2: Factor left side of equation.
2(2x+7)(x−6)=0
Step 3: Set factors equal to 0.
2x+7=0 or x−6=0
x=
−7
2
or x=6
Given the function defined in the table below, find the average rate of change, in
simplest form, of the function over the interval 0 < x < 2.
20
0
58
2
46
4
34
6
22
Answer:
- 0.4 (in decimal)
Step-by-step explanation:
Here "x" is input and "f(x)" is output
Average Rate of Change is = change in output / change in input
At x = 0, the output is 41
At x = 60, the output is 17
= (17-41)/(60-0) = -24/60 = -0.4
Jina is saving money to buy a bike. She has $63 and is going to save an additional $9 each week. The bike costs $198. In how many weeks will she have
enough money to buy the bike?
(a) Write an equation that could be used to answer the question above.
First, choose the appropriate form. Then, fill in the blanks with the
numbers 63, 9, and 198. Let w represent the number of weeks.
Answer:
Jina will have enough money to buy the bike in 15 weeks
Step-by-step explanation:
y = mx + b
198 = 9x + 63
Subtract 63 from both sides;
135 = 9x
Divide both sides by 9;
x = 15
2r+7=16
what does r =
Answer:
4.5
Step-by-step explanation:
2*4.5=9+7=16
The value of r in the given linear equation 2r + 7 =16 is 9/2.
What is linear equation in one variable?
A linear equation in one variable is an equation which has maximum of one variable of order 1. It is of the form ax + b =0, where x is the variable.
Solving Linear Equation in one variableFor solving an equation having one variable, the following steps are followed:
Step1: Using LCM, clear the fractions if any.Step2: Simplify both sides of the equation.Step 3: Isolate the variable.According to the given question
We have, a linear equation in variable r.
2r +7 =16
⇒ 2r + 7 -7 = 16 -7
⇒ 2r = 9
⇒ r = 9/2
Hence, the value of r is 9/2 for the given linear equation 2r + 7 = 16.
Learn more about Linear equation in one variable here:
https://brainly.com/question/11897796
#SPJ2
Help yall girl for 30 point
Answer:
cant help ya but if you go to math_way they help with all sorts of stuff like this
Step-by-step explanation:
sorry!
PLEASE HELPP!! ASAPPP
Answer:
The answer to this question is A
Step-by-step explanation:
Answer: 400,000 gallons
Step-by-step explanation: First find the per minute is 4000 next multiply by 100 minutes and it is 400,000
Write the equation of the line with the given point and slope: (−5, −3) slope=−35
Answer:
Slope-intercept form: y = -35x - 178
Point slope form: y + 3 = -35 x (x + 5)
Step-by-step explanation:
Kali runs 10 laps around a track each day each lap around the track is 400 m how many days will it take me to run a total of 12
Answer:
It will take 3 days.
Step-by-step explanation:
:)
Look at this graph: 100 90 80 70 60 50 40 30 20 10 Х 0 10 20 30 40 50 60 70 80 90 100 What is the slope?
I NEED HELP NOW PLEASE
Which decimal represents the portion that is NOT shaded?
0.003
0.03
0.3
3.0
Write how u solved it
Answer:
I think its 0.03 but I'm not a 100 percent sure
Which of the following functions is graphed below
Answer:
D
Step-by-step explanation:
GIVING 100 POINTS!! PLUS BRAINLIST! whoever scams this will get reported and have there points deducted and blocked as a user!
The basketball coach made up a game to play where each player takes 10 shots at the basket. For every basket made, the player gains 10 points. For every basket missed, the player loses 15 points.
a. The player with the highest score sank 7 baskets and missed 3. What was the highest score?
b. The player with the lowest score sank 2 baskets and missed 8. What was the lowest score?
c. Write an expression using addition to find out what the score would be if a player sank 5 baskets and missed 5 baskets.
Answer/Step-by-step explanation:
A. (7 x 10) = 70
(3 x -15) = -45
70 + -45 = 25
B. (2 x 10) = 20
(8 x -15) = -120
20 + - 120 = - 100
C. (5 x 10) + ( 5 x -15) or 5 x (10 + -15)
5 x 10 = 50
5 x -15 = -75
50 + -75 = -25
23.82600 round to three significant figures
Answer:
23.8 i think
Step-by-step explanation:
Answer:
[tex]23.83[/tex]
Step-by-step explanation:
[tex]--------------------------------------------[/tex]
According to Maths3000, Rounding to 3 significant figures is probably the most common way of rounding off. Rounding the number off to 3 significant figures means you require 3 non-zero digits from the start of the number. So in example 1, 27.1258 gets rounded to 27.1 figures.[tex]--------------------------------------------[/tex]
It is 23.83 because rounding by three significant figures is picking three of the last numbers, and rounding the 4th number. In this case, 6 is more than 5, so 23.82 becomes 23.83
[tex]--------------------------------------------[/tex]
Hope this helps! <3
[tex]--------------------------------------------[/tex]
Can someone please put these in order from least to greatest? Thanks
12x+6y=18
-0.5
12x+1.75
4
Answer:
Luna wanna play among us with me (sorry I’m bored) the code is: PXQMKF
Step-by-step explanation: