What is the x-value of the solution to this system of equations?
3x + 2y = 7
y = –3x + 11
a. 6
b. 3
c. -4
d. 5
Step-by-step explanation:
3x+2y = 7
3x +2(-3x+11) = 7
3x-6x +11 = 7
-3x+11 =7
-3x = 7-11
-3x =-4
x =-4/-3
x = 4/3.
bro u r option has wrong
I need help plz !!!!!
Answer:
7 gallons
Step-by-step explanation:
brainliest plz if someone else answers
85+125 = 210 (total amount of miles)
unit rate is 30 mi/gal
210 / 30 = 7
7 gallons
Suzy makes 20 dollars an hour at her job. Bill only makes 10 dollars an hour but he has a starting bonus of 20. When will Suzy and Bill make the same amount of money for the same number of hours worked? How much will they both earn at the same time?
Answer:
2 hours
Suzy would earn $40
Bill will earn $40
they will both earn $80
Step-by-step explanation:
The total amount suzy earns is a function of the total hours worked. Let t represent time
total income of suzy = $20t eqn 1
Bill's income = starting bonus + variable pay
= $20 + $10t
We are looking for when they would earn the same amount :
20t = $20 + $10t eqn 2
collect like terms and solve for t
10t = $20
t = 2 hours
Substitute for t in either eqn 1 or 2
20(2) = $40
Suzy would earn $40
Bill will earn $40
they will both earn $80
what is the common difference 5,3,1,-1
Answer:
t2-t1= 3-5 = -2
answer= -2
what is the correct answer for s/4 =5;s =
Answer:
the answer the question s=20
Question 10 options:
A marine biologist is researching the population density of dolphins. The marine biologist counts 175 dolphins within a radius of 2.5 miles of a half-circle off of Clearwater Beach.
What is the population density of the dolphins?
Use 3.14 for pi, and round to the nearest whole number.
Answer:
Density = 9 dolphins / mi^2 This is the result.
Step-by-step explanation:
Number of dolphins = 175
Radius = 2.5 mi
1. - Calculate the area
Area = pi* r^2
Area = 3.14*2.5^2
Area = 3.14*6.25
Area = 19.625 mi^2
2. - Calculate the density
density = dolphins/mi^2
- Substitution
density = 175 / 19.625
Result
density = 8.9 dolphins/mi^2
Rounding to the nearest whole number
Density = 9 dolphins / mi^2
Answer:
Area of half circle = 1/2 x π x r^2
= 1/2 x 3.14 x 2.5^2
= 9.8125 miles²
For the density divide the number of dolphins by the area:
Density =population/area= 175/9.8125 = 17.83 dolphins/mile²
the population density of the dolphins is 18dolphin/miles²
A circular flower bed in Kay's backyard has a diameter of 8 feet. what is the area of the flower bed? round your answer to the nearest tenth.
Answer:
16pi or 50.2
Step-by-step explanation:
formula for area of a circle is pi * radius squared. Since the diameter is 8 you divide that by 2 to get 4 and you square it so it becomes 16. Then you multiply it by pi or 3.14 to get 50.24 and then you round.
calcule o valor x na equação do 1° grau: 2x-42=64
Answer:
2x-42=64
Step-by-step explanation:
2. Sara started out with $50 in her piggy bank. Every week she deposited the same amount of
money in the bank. After 7 weeks she had $67.50. Find the average rate of change or slope
in dollars per week. (This is a unit rate.)
3. At 4 a.m. the temperature was 38 degrees F. By 11 a.m. the temperature had risen to 60
degrees F. Find the average rate of change or slope in degrees per hour.
What is the length of the hypotenuse of the triangle below?
Answer:
Step-by-step explanation:
h = (9√2)(√2) = 18 units
179+892
Estimate
Round each number to the nearest hundred
Answer:
1100
Step-by-step explanation:
179+892 is 1071. However we will round up since 1071 is closer to 1100 compared to 1000. Hope this helps!
If g(x) is the inverse of f(x) and f(x) = 4x+12, what is g(x)?
g(x) = 12x + 4
g(x) = 1/4x-12
g(x) = X-3
g(x) = 1/4x -3
Answer:
D
Step-by-step explanation:
y=4x+12
x=4y+12
x-12=4y
1/4x-3
If there is a boy to girl ratio of 3:4, how many girls are there if there
are 18 boys? Complete the table to determine the answer.
Boys
Girls
Answer:
24 Girls
Step-by-step explanation:
3/4 = 18/x
3*x = 18*4
3x=72
3x/3=72/3
x=24
What is the area of the figure? A kite with height shown as the sum of eighteen and ten and the length of the base as the sum of twelve and twelve
Answer:
336
Step-by-step explanation:
12+12=24 the base
18+10=28 the height
1/2 * 28 * 24 =336
Answer:
Area is 336.
Step-by-step explanation:
A=1/2bh
A=1/2 * 12+12 * 10+18
A=1/2 *672
A=336
what is the area of the lawn in sqaure meters
Answer:
60 m
Step-by-step explanation:
Trapezoid area formula:
[tex]A=\frac{a+b}{2} h\\\\A=\frac{18+12}{2} 4\\\\\frac{30}{2} *4\\\\15*4\\60[/tex]
Work out the area of a circle with radius 7.5 cm.
Take it to be 3.142 and give your answer to 2 decimal places.
Answer:
Stuck in same question Jinx
Step-by-step explanation:
Help pls! (4c+4)(2c-3)
Answer:
8c2 - 4c - 12
Step-by-step explanation:
Answer:
8c^2-4c-12
Step-by-step explanation
So you have to multiply 4c into 2c and -3 first and then 4 into 2c and -3.
(4c+4)(2c-3)
4c X 2c is 8c^2
(4c+4)(2c-3)
4c X -3 is -12c
So for the 4c multiplying in you would get 8c^2 and -12c, but we still have to multiply in the 4
4 X 2c is 8c
(4c+4)(2c-3)
4 X -3 is -12
So then we would get 8c^2-12c+8c-12, however we can still combine the -12c and the 8c. Combining those would get -4c. So the final answer is 8c^2-4c-12
help whoever solves correctly ill give brainly
Step-by-step explanation:
1. GFE = right angle = 90°
x + 20 = 90
x = 90 - 20
= 70
2. x + 36 = 90
x = 90-36
= 54
Plz, Help me with this question!
Plz, Help me with this question!
Answer:
Ben franklin
Step-by-step explanation:
Answer:
Ben Franklin
Step-by-step explanation:
Tyler asks for a fish tank for his birthday. The tank he wants is a rectangular prism 20.25 inches long, 10.5 inches wide, and 12.5 inches tall. How much water will the fish tank hold? Show how you found your answer.
Answer: 20.25*10.5*12.5 = the answer
Step-by-step explanation: Hope this help :D
Consider the equation 5 + x = n
What must be true about any value of x is the n is a negative number?
Explain your answer.
Provide an example that would satisfy this condition.
Explain how you know your equation is correct.
(Can someone plz help)!!!
someone please help.
Madison's bicycle wheel has 28 spokes. The diameter of the wheel is 24 inches. What is the approximate arc length between each pair of spokes? Use 3.14 for π, and round to the nearest tenth
1.2 in.
1.4 in.
2.7 in.
5.6 in.
Answer: the answer is C: 2.7in.
Step-by-step explanation:
Answer:
2.7
Step-by-step explanation:
A pack of gum is in the shape of a rectangular prism with a length of 5 centimeters and width of 2 centimeters. The volume of the gum is 60 cubic centimeters. What is the height of the pack of gum? The height of the pack of gum is cm.
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
(8x) 2/3 radical form
OPEN ENDED QUESTION
____ x 8 = 12 x 2
Answer:
__ X 8 = 12 X 2?
First, 12 X 2 = 24. So, find out what number would give you 24, by diving 8 from 24 and you'll get your answer.
24/8 = 3.
Step-by-step explanation:
Hope that this helps you lots!! :))>
can someone please answer some of my questions on my page? im being stalked by a bot who wont give me and answer and keeps putting a link, but i want a trustful answer. (i will mark brainliest on any questions you answer if you do)
Answer:
Trust me
Step-by-step explanation:
Answer:
ikr they put this cuttly.com /... thing in it right
Step-by-step explanation:
evaluate the expression: 3^3 + 3(4 + 1/3)
Your answer: 3^3 + 3(4 + 1/3) = 40
Answer: 130
Step-by-step explanation: I first did 4+1/3 which is 4 1/3 and then I did 3^3 which is 27 then I added 3 to 27 and I multiplied 27 and 4 1/3 and got 130.
21x+9 =
Help please
Answer:
3
Step-by-step explanation:
cross multiply
Point c’(-4,-3) is the same image of C(-2,-3) under a translation
Need translation and if it goes up down left or right
Answer:
the translation is to the left 2 times
Step-by-step explanation:
-2-2=-4
there is no changes to the y value