Answer:
3 hours
Step-by-step explanation:
Step one:
given data
Dana charges
$64.95 fee, plus $45/h.
let the number of hours be x
and the total charges be y
y= 45x+64.95---------1
Tom charges
$79.95 fee, plus $40/h.
let the number of hours be x
and the total charges be y
y= 40x+79.95---------2
Step two:
Equate eqn 1 and 2 to find x
45x+64.95=40x+79.95
collect like terms
45x-40x=79.95-64.95
5x=15
divide by 15
x= 15/5
x= 3 hours
Simplify the expression.
50 + 3(−10) + 2(−20)
Answer:
I got "0"
start with the parentheses- multiply
50 + (-30) + (-20)
add it together
50 + (-50) = 0
Which graph represents a function
Answer:
graph d .
\
Step-by-step explanation:
I need help with this plz
Answer:
C.
Step-by-step explanation:
if four people dont want it and there are 14 people total, then it would be (14-4). The photos cost $3 so it would be 3(14-4)=$30
Answer:
C
Step-by-step explanation:
from 14 friends you have to take away the 4 that do not want a photo
(14- 4 ) is the number of kids Charlie will have to pay for
and will pay $3 for each (14-4) kids
3(14-4) is the cost
3(14-4) = 3*10 = is $30
y = -x + 5
Write in standard form. PLEASE SHOW WORK
A 9 by 4 centimeter rectangle expands in such a way that the 9–centimeter side is expanding at the rate of 5 centimeters per second and the proportions of the rectangle remain constant. At what rate is the area of the rectangle increasing when its dimensions are 36 by 16 centimeters?
A.
120 cm2/s
B.
140 cm2/s
C.
160 cm2/s
D.
180 cm2/s
Answer:
160 cm^2/s
Step-by-step explanation:
Just took the test.
Answer:
160cm^2
Step-by-step explanation:
answer from plato
Plz answer quickly!!!!!!!
Answer:
(A). x ≥ [tex]\frac{16}{5}[/tex] and x ≤ - [tex]\frac{3}{4}[/tex]
Step-by-step explanation:
5x - 4 ≥ 12 ⇔ 5x ≥ 16 ⇒ x ≥ [tex]\frac{16}{5}[/tex]
and
12x + 5 ≤ - 4 ⇔ 12x ≤ - 9 ⇔ 4x ≤ - 3 ⇒ x ≤ - [tex]\frac{3}{4}[/tex]
Kristina owns a local bakery and sells boxes of cannolis. Each box contains 9 cannolis. If she sells 6 boxes of cannolis by closing time on Friday, how many cannolis did she make to fill all the boxes that she sold?
Answer:
63 cupcakes
Step-by-step explanation:
The sum of two numbers is 10. The larger number is 4 times the smaller number. What are the two numbers? Let x = the smaller number. Lety = the larger number. Which two equations represent the system for this word problem? Equation 1: Equation 2:
4(2)+2=10
X=2
Y=8
X+y=10
Y=4x
A large box holds 125% as many toys as a small box. If the large box hold 25 toys, how many toys does the small box hold? Your answer
Suppose that 15 inches of wire cost 45 cents at the same rate how many inches of wire would be bought for 33 pls fast
Answer:
If we are talking about cent's it would be 11 inches of wire
if we are talking about the wire, then 33in would be equivalent to 66 cents
Step-by-step explanation:
im not sure about the second one but the first answer is correct. Please give brainliest by the way
Answer:
11 inches
Step-by-step explanation:
45 divided by 15 = 3
33 divided by 3 = 11
A laptop computer uses approximately 8.4 x 10(-3) kilowatt-hours of energy in 3.5x10(-1) hours. How many kilowatt-hours of energy does the laptop use per hour?
PLEASEEE, I NEED THIS REALLY BAD
the things in parentheses are exponents
Answer:
A laptop uses between 50 and 100 W/hour when it is being used, depending on the model. A laptop that is on for eight hours a day uses between 150 and 300 kWh and emits between 44 and 88 kg of CO2 per year. In stand-by mode the power consumption of both a desktop and a laptop falls to about a third.
Step-by-step explanation:
find the constant rate of change
Answer:
- 2 ft/ s
Step-by-step explanation:
The rate of change is the slope m of the line.
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (0, 80) and (x₂, y₂ ) = (40, 0) ← 2 points on the line
m = [tex]\frac{0-80}{40-0}[/tex] = [tex]\frac{-80}{40}[/tex] = - 2
Rate of change is - 2 ft/ s
Find the area and perimeter of the original planned patio and the new planned patio? help me please
Answer:
Original Patio:
-perimeter - 36 feet
-area - 80 square feet
New Patio:
-perimeter - 40 feet
-area - 96 square feet
Simplify 8 over -4 divided by -3 over 9
Answer: .074 continuing
Answer:
6/1
Step-by-step explanation:
Hope this helps:)
Which of the following numbers is closest to 12? O A. V145 B. 7147 C. V 142 D. V 146 . V
Answer: C
Step-by-step explanation:
Answer:
145
Step-by-step explanation:
12x12=144 and the closest number to 144 is 145
Look at the diagram. If ST = 15 and RT = 40, then RS =_____.
R———————S——————T
The length of RS is 55 unit.
What is Axiom of addition?The addition axiom states that when two equal quantities are added to two more equal quantities, their sums are equal. Thus, if a = b and y = z, then a + y = b + z.
We have, ST = 15 and RT = 40
Then RS can be get by adding the value ST + RT.
Apply Axiom of addition
then, RS
= RT + ST
= 40 + 15
= 55 unit.
thus, the length of RS is 55 unit.
Learn more about Axiom of addition here:
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PLS HELP WILL GIVE BRANLIEST
Answer:
A. y = 8x
Step-by-step explanation:
y is the product, and x is one of the variables that will multiply another number to equal y. So x times a variable equals y, then y divide by x would equal that variable. And in the questions it gave us if y = 48 and x = 6. So we'll use that: 48/6 = 8, the variable is 8. 8 times 6 equals 48 so:
y = 8x
4. Reflect the triangle ABC over the y-axis. A(0,4.) B(-1, -1) C(2, -3). What is the coordinate points of B?
(1 point)
A) B' (1,-1) B) B' (-1,1) C) B' (-1,-1) D) B' (1,0)
A computer programmer had two files. The first was 49.71 gigabyes and the second was 44.5
gigabytes. What is the total file size of both?
Answer:
94.21 gigabytes
Step-by-step explanation:
add 49.71 to 44.5 to get 94.21
What number is the next term in the number pattern? 1/10, 3/12, 7/14, 13/16, … Enter your answer in the box.
A.21/18
B.19/18
C. 21/16
D.19/18
Answer:
A. 21/18
Step-by-step explanation:
The numerator pattern is adding 2 every time to the difference (ex: difference between 1 and 3 is 2, then difference between 3 and 7 is 4). Meanwhile the denominator is only adding 2 everytime.
Deion loves to play the piano but doesn't like practicing the exercises his piano teacher
assigns. Deion knows the exercises will help him play better though, so he tries to motivate
himself using his favorite treat - chocolate chip cookies.
There is a proportional relationship between the amount of time (in hours) that Deion
practices the piano, x, and how many cookies he gives himself, y.
10
o
8
7
6
Cookies
3
2.
1
2
3
4
8
9
10
5 6 7
Hours
What is the constant of proportionality? Write your answer as a whole number or decimal.
cookies per hour
Identify the partial quotient in the first step of this problem, as shown: A2 B100 C200 D20
Answer:
C200
Step-by-step explanation:
21 goes into 43 2 times. Because of place value, it really means 200.
21 x 200= 4200
Answer:
c is the answer
Step-by-step explanation:
because 4200 divided by 21 is 200
hope this helps
What is the slope of the line that passes through the points (-8, 4) and (4,4)?
I NEEED HELP!!!!!
find the equation of the line containing (5, -2) and has a slope of -1
A: y= -x + 9
B: y= -x - 3
C: y= -x + 6
D: y= -x + 3
Answer:
y= -x + 6 :) hope this helped you
Which polynomial can be factored using the binomial theorem?
100x2 + 70x + 49
100x2 + 210x + 49
1,000x3 – 2,100x2 + 1,470x – 343
1,000x3 – 2,800x2 + 1,960x – 343
Answer:C
Step-by-step explanation:
The polynomial can be factored using the binomial theorem is
1,000x³ – 2,100x² + 1,470x – 343.
What is Binomial Theorem?Assertion that the sum of the nth power of the product of two positive integers a and b may be written as the sum of the n + 1 terms of the form for any positive integer n.
If a and b are real numbers and n is a positive integer, then
[tex](a + b)^n =^nC_0 a_n + ^nC_1 a_{n-1} b_1 + ^nC_2 a_{n-2} b_2 + ... 1.[/tex]
Given:
Using Binomial we can write
(a+ b)³ = a³ + b³ + 3a²b + 3ab²
and, (a+ b)² = a² + 2ab + b²
So, 100x²+ 70x + 49 and 100x² + 210x + 49 cannot be factors using Binomial Theorem because the correct expansion would be
(10x+ 7)² = 100x² + 140x + 49
and, 1,000x³ – 2,100x² + 1,470x – 343 can be factored using Binomial theorem.
As, (10x - 7)³ = 1000x³ -2100x² + 1470x - 343.
Learn more about Binomial theorem here:
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I need anyone's help please, I'm stuck and its timed.
Answer:
the flagpole is 33 feet high.
Step-by-step explanation:
Brainliest please :)
pls help (15 pts)
whats the value of p
what is the answer backs i need help
Answer:
Option a
Step-by-step explanation:
It is made up of only rational numbers
How many 12 letter words can be formed using the letters in the word "tessellation"?
Answer:
479001600
Step-by-step explanation:
You will want to use 12!.
12*11*10*9*8*7*6*5*4*3*2*1=
479001600
milan made $135 for $9 hours of work. at the same rate how many hours would he have to make $195?
PLSS SOMEONE HELP ME W/ THIS