Answer:
38minutes approx
Step-by-step explanation:
Given data
Charges per minute= $1.45
Monthly charge= $45
Let the number of minutes be x
and let the total charges for the month be y
The function for the total charge is
y= 1.45x+45
for y= 100, we want to find x
100= 1.45x+45
100-45= 1.45x
55= 1.45x
Divide both sides by 1.45 to get x
x= 55/1.45
x= 37.93
Hence the number of minutes is 38minutes approx
Simplify each expression. Show all work from credit.
i really hate how i need to type something.
Sasha uses 6.1 pints of white paint and blue paint to paint her bedroom walls. 2/5 of this amount is white paint, and the rest is blue paint. How many pints of blue paint did she use to paint her bedroom walls?
Answer: 3.66 pints of blue paint.
Step-by-step explanation:
She used 2/5 of the total number of pints to paint white.
That number in pints is:
= 2/5 * 6.1
= 2.44 pints of white
The number of pints used to paint blue is therefore:
= 6.1 - 2.44
= 3.66 pints of blue paint.
Find the area of the figure. (Sides meet at right angles.)
3 ft
2 ft
2 ft
4 ft
4 ft
4 ft
A ft
Answer:
50 ft sq
Step-by-step explanation:
Big Box:
4 * (4+3+4) = 4 * (11)
= 44
Small Box:
3(2) = 6
Total:
6+44 = 50 ft sq
I bought 32 cupcakes , 1/8 are chocolate and half of the rest are vanilla . Remaining are strawberry. How many are strawberry?
Answer: 14
Step-by-step explanation:
Since 1/8 are chocolate, the number of chocolates will be: = 1/8 × 32 = 4.
Since half of the rest are vanilla, the remaining cupcakes will be: = 32 - 4 = 28
Vanilla will be: = 1/2 × 28 = 14
Number of strawberry will then be:
= 32 - (4 + 14)
= 32 - 18
= 14 strawberries
which expression is equivalent to the expression shown below? -1/2(-3/2x+6x+1)-3x
Answer:
3 2 − 6 − 1
2
− 3
Step-by-step explanation:
calcule o valor x na equação do 1° grau: 16x-21=x+9
Answer:
16x-21=x+9
15x=30
x=2
eu acho que e nao sei mais o outro cara respondeu ali
Step-by-step explanation:
Compare a number line model for adding whole numbers and a number line model for adding fractions. How are they the same? How are they different
what is the answer to this 5(a+b)-a-b
Answer: 4a + 4b
Step-by-step explanation: distribute the 5 and combine like terms. It would distribute to 5a + 5b -a -b which simplifies to 4a + 4b.
Answer:
4a + 4b
have a great day!!
what is 4h divided by 5?
5.30085603 × 10-34 m2 kg / s
Answer:
5.30085603 × 10-34 m2 kg / s
Step-by-step explanation:
Aubrey finished 2/9 of a project on Monday and 1/4 of the project of Tuesday. How much of the project has Aubrey completed?
Answer:
17/36
Step-by-step explanation:
We have to find a common denominator, so the first common denominator for 4 and 9 is 36. 9x4=36, so we multiply 2 by 4, which equals 8. 4x9-36, so we multiply the 1 by 9, and get 9. Then we add the numerators, 8 and 9, and get 17. So it's 17/36
What is the answer to 2/5 + 1/4 + 1/10?
Answer:
the answer to your question should be 0.75 aka 3/4
Step-by-step explanation:
13. BASKETBALL Find the price of a $35 basketball that is on sale for 50% off
the regular price.
Answer:
$15
Step-by-step explanation:
since 50% is in 100% you do
100 - 50 = 50
then you do
50 - 35 = 15
so the answer is $15 i hope it helps
I will mark brainliest
Whats the correct simplification of d^7g^13/d^2g^7
Isaiah earns $60 per week mowing lawns in the summer and shoveling driveways in the winter. He invested $220 in equipment. How long will it take him to earn $860? Find the equation and solve.
Answer:
18 weeks
Step-by-step explanation:
Create an equation where x is the number of weeks he works
60x - 220 will represent his profit, since he gets $60 a week but spent $220 in equipment.
Set this equal to 860, then solve for x, to find when he will earn $860
60x - 220 = 860
60x = 1080
x = 18
So, it will take him 18 weeks to earn $860
There are 10 cards. Each card has one number between 1 and 10, so that every number from 1 to 10 appears once.
In which distributions does the variable X have a binomial distribution?
Select each correct answer.
When a card is chosen at random without replacement three times, X is the number of times an even number is chosen.
When a card is chosen at random with replacement multiple times, X is the number of times a card is chosen until a 5 is chosen.
When a card is chosen at random with replacement five times, X is the number of times a prime number is chosen.
When a card is chosen at random with replacement six times, X is the number of times a 3 is chosen.
Answer:
Hence , the answer is A and D .
Answer:
the first one and last one is the correct answer
Step-by-step explanation:
Jamal is running 42 kilometers. The amount of time t it takes Jamal to run varies inversely with the rate, r, at which he runs, write the inverse variation equation that represents this situation
Answer:
t α 1 /r ; t = k/r
Step-by-step explanation:
Given that :
Time taken, t varies inverse as rate, r
MATHEMATICALLY,
t α 1 /r
Hence,
t = k/r ;
Where, k is the proportionality constant
Hence, the situation could be expressed as :
t = k/r OR
t α 1 /r
The diameter of a circle is 4 ft. Find its area to the nearest tenth.
Answer:
.09ft^2
Step-by-step explanation:
Answer:
12.6 ft^2
Step-by-step explanation:
HELP ASAP!!!!!!!! BRAINLIEST AND 15 POINTS!!!!!!!!!!!!
Answer:
for the first one, i should be 25 right if im not mistaken, the second one should be ten percent, the third should be a negative 20 or a postive 20 percent decrease
Step-by-step explanation:
Rex puts $5,000 in a savings account with a simple
interest rate of 2.5%. How much interest does Rex
carn after 2 year's
Answer:
Rex earns $250 in interest after 2 years.
Step-by-step explanation:
how do you find a common denominator with these fractions
Answer:
12
Step-by-step explanation:
We find the common denominator of two fractions by multiplying the denominators
3x4=12 so the common denominator of 1/3 and 1/4 is 12
Answer:
Step-by-step explanation:
The LCD here is the smallest denominator evenly divisible by both 3 and 4. That number is 12, obtained by multiplying 3 and 4.
HELP!!! pls with this question !
Answer:
B
Step-by-step explanation:
the graph should start at negative five not four
50% of 50% of x. PLEASE HELP I WILL GIVE BRAINLIEST
Answer:
25. 50 percent of 50 is 25 divided by 2.
Step-by-step explanation:
step1:Our output value is .50.
step2:we represent the unknown value with x
step3: from step1 above,.50=100%
step4: similarly,x=50%
step5: This results in a pair of simple equation:
.50=100%(1)
x=50%(2)
step6:by dividing equation 1 by equation 2 and noting that both the RHS(right hand side)of both equations have the same unite(%);we have
.50. 100%
____. = ____
x. 50%
step7: again,the reciprocal of both sides gives
x. 50
___ =. ___
50. 100
°x=0.25
therefore,50%of.50 is 0.25
-8(5m-7.4)
NEED ASAP
Answer:
-40m = 59.2
Step-by-step explanation:
simplify
Answer:
-40m + 59.2
Step-by-step explanation:
Distribute
-40m + 59.2
If you're solving for m then set the equation equal to 0 and solve.
-40m + 59.2 = 0
-40m = -59.2
m = 37/25
please help asap.....
Answer:
B
Step-by-step explanation:
As we know when factoring in complete from when it is given to us like this we erase one of the double terms, in this case is x+9 so after erased, it is
5x-7(x+9)
which basically is (5x-7)(x+9)
So that is the answer, thank you .
Answer:
(x=9)x (5x-7)
Step-by-step explanation:
let f(X)=x^2+2 and g(X)=1-3x
Answer:
1. y = x2+2
2. g = (-3x+1)/x
Step-by-step explanation:
1. No explanation
2.
Let's solve for g.
gx=1−3x
Step 1: Divide both sides by x
gx /x = −(3x+1 )/x
g = (-3x+1)/x
Hope it helped!
What is the name of the circle that has radius ?
A
B
C
The equation h = 10d represents the height h (in millimeters) that a plant grows after d days. How tall is the plant after 5 days?
A) 10 millimeters
B) 5 millimeters
C) 50 millimeters
D) 2 millimeters
Answer:
50 millimeters
Step-by-step explanation:
d alone , is always 1. Just like any other variable. To find the hegiht you need to do days x 10.
After 5 days its mental math.
just do 5 x 10 and do not forget to add millimeters to the end!
Jocelyn estimates that a piece of wood measures 5.5cm. If it actually measures 5.62 cm, what is the percent error of Jocelyn’s estimate?
Answer:
2.14% error
Step-by-step explanation:
Use the percent error formula:
| (observed - expected) / expected | x 100
Plug in the observed and expected values:
| (observed - expected) / expected | x 100
| (5.5 - 5.62) / 5.62 | x 100
Calculate:
= 2.14% error
So, the percent error of Jocelyn's estimate is 2.14%
I only have 70 pointsssssssss
Answer:
5
Step-by-step explanation:
The equation given is put in slope intercept form
y = mx + b
where m = slope and b = y intercept
the number before the x represents the slope (m) , Because 5 is the number before the x, 5 is the slope
Answer:
5
Step-by-step explanation:
The reading levels of a random sample of elementary students are represented by the dot plot.
Which decimal is the best approximation of the mean reading level for this group of students?
Select one:
2.7
1.5
2.3
1.9