Answer:
12.5
Step-by-step explanation:
(2.5 + 7.5?) /2 * 2.5 = 12.5
The y-intercept of 3y − 8x = 18 is (0, 6).
True or False
Answer:
3y = 8x + 18
for y-intercept let x = 0
3y = 8(0) + 18
3y = 18
y = 6
y-intercept is (0, 6)
THIS IS TRUE
i might be here all night considering how terrible i am at algebra but here's another problem i'm stuck on i guess. 8g + 10 = 35 + 3g
H. Tito started the week with a $20 in his lunch
account. If meals costs $2.30 each, write a linear
equation modeling Tito's account value. Can Tito
afford 9 meals?
Answer:
See Below
Step-by-step explanation:
Total money = $20
Cost of one time meal = $2.30
Linear equation = $20 - $2.3(x) Where x is the number of days
No, he can't afford 9 meals because 2.3 × 9 = 20.7. Which is out of his account's money
Evaluate c - 2 when c = 7.
the following ratios form a proportion 6/8 * 10/12 true or false
Answer:
false
Step-by-step explanation:
10/12 is 5/6 and 6/8 is 12/16 that's the closest whole number proportionality also, it would both have a difference of 2
Help! Perimeter and Area please.
Amanda's earnings vary directly with the number of hours she works. Suppose that she worked 9 hours yesterday and earned 117. how much will she earn today if she works seven hours
Answer:
91
Step-by-step explanation:
117/9 is 13 which means she earns 13 for each hour and for 7 hours it will be 13 multiply by 7 and that gives 91
Values that represent a linear function are shown in the table below.
x y
−5 −8
−7 −16
−9 −24
−11 −32
−13 −40
What is the slope of this linear function?
A
4
B
14
C
−18
D
−8
Answer:
A.4
explanation:
you can find the slope using this formula
m=(y2-y1)/(x2-x1)
(-16--8)/(-7--5)= 4
Evaluate the expression when a=
[tex] \frac{11 }{15} [/tex]
and c=
[tex] \frac{3 }{10} [/tex]
-2c+a
write your answer in simplest form
Answer:
[tex]\frac{2}{15}[/tex]
Step-by-step explanation:
Substitute the values for a and c into the expression
- 2c + a
= - 2× [tex]\frac{3}{10}[/tex] + [tex]\frac{11}{15}[/tex]
= - [tex]\frac{3}{5}[/tex] + [tex]\frac{11}{15}[/tex]
= - [tex]\frac{3(3)}{5(3)}[/tex] + [tex]\frac{11}{15}[/tex]
= - [tex]\frac{9}{15}[/tex] + [tex]\frac{11}{15}[/tex]
= [tex]\frac{2}{15}[/tex]
The temperature outside is dropping at a rate of 1.5 degrees each hour . It last is raining and the weather station predicts a changeover from rain to sleet when the temperature reaches 32*F or below . Currently the temperature is 53*F and the time is 8:30am when do you predict the changeover to sleet will occur?
Please help me
The changeover to sleet will happen at 10:30pm
The changeover to sleet is predicted to occur at 10:30 pm.
Given,
The temperature outside is dropping at a rate of 1.5 degrees each hour.
The changeover from rain to sleet is when the temperature reaches 32*F or below.
Currently, the temperature is 53*F and the time is 8:30 am.
We need to find at what time can we predict the changeover to sleet will occur.
What is temperature?Temperature is the measure of the hotness or coldness of an object with reference to some standard value.
We have,
Current temperature = 53*F at 8:30 am.
Rate of the drop of temperature = 1.5 degrees per hour.
Find the number of hours needed to drop from 53*F to 32*F.
53*F - 32*F = 21*F
We need to find how many hours required to drop to 21*F
1 hour = 1.5 degrees
Multiplying 21/1.5 on both sides.
21/1.5 x 1 hour = 21/1.5 x 1.5 degrees.
14 hours = 21 degrees
The number of hours required to drop from 53*F to 32*F is 14 hours.
8:30 am + 14 hours = 10:30 pm
Thus the changeover to sleet is predicted to occur at 10:30 pm.
Learn more about differences in temperature here:
https://brainly.com/question/24187514
#SPJ2
solve the equation. determine whether or not the equation has one solution, no solution, or infinitely many solutions. 6c+3=c-12
Find the distance between the given points: (2, -2) and (-4, 7)
Answer:
[tex]3\sqrt{13}[/tex]
Step-by-step explanation:
Hi there!
We want to find the distance between the points (2, -2) and (-4, 7).
To do that, we can use the distance formula.
The distance formula is given as [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex], where [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex] are points
We have everything needed to find the distance, but let's label the values of the points to avoid any confusion
[tex]x_1=2\\y_1=-2\\x_2=-4\\y_2=7[/tex]
Now substitute those values into the formula and solve
[tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
[tex]\sqrt{(-4-2)^2+(7--2)^2}[/tex]
Simplify
[tex]\sqrt{(-4-2)^2+(7+2)^2}[/tex]
[tex]\sqrt{(-6)^2+(9)^2}[/tex]
Square the numbers under the radical
[tex]\sqrt{36+81}[/tex]
Add the numbers under the radical together
[tex]\sqrt{117}[/tex]
Simplify the square root
[tex]3\sqrt{13}[/tex]
Hope this helps!
Do answer 20 and 24. URGENT!!!
Answer:
See the image for solution.
Brainlist please!!
Find the area and perimeter.
Answer:
Step-by-step explanation:
Perimeter of triangle = 4x - 3 + x + 9 + 8
= 4x + x - 3 + 9 + 8
= 5x + 14
Area = [tex]\frac{1}{2}*base *height[/tex]
[tex]= \dfrac{1}{2}*8*3x\\\\= 4 * 3x\\\\= 12x[/tex]
Simplify:
(-2x^3y^2)^5
Answer:
power rules attached
Step-by-step explanation:
(-2x³y²)⁵ = (-2)⁵.(x³)⁵.(y²)⁵
= -32x¹⁵ .y¹⁰
Please help! I need to get this done.
Create an equivalent expression using the drop downs below 4(32 – 4).
Answer:
7x
Step-by-step explanation:
It equals 28 just like the problem with parentheses, 7x .
( x - 2) ( x + 2 ) ( x bình + 4 )- ( x bình - 3 ) ( x bình + 3 )
Answer:
( x - 2) ( x + 2 ) ( x² + 4 ) - ( x² - 3 ) ( x² + 3 )
(x² – 4) (x²+4) – ( x⁴ – 9 )
(x⁴ – 16 ) – ( x⁴ – 9)
(x⁴ – 16 ) + ( – x⁴ + 9) = – 7
I hope I helped you^_^
Why is it important for the government to know the population growth rate in the country
Answer:
Governments, need to know how many inhabitants currently live in the country and how many there will be in the future. From this they can plan and make better decisions regarding the construction of schools, hospitals, roads, and more.
32 can go into 96 how many times
Answer:
3 times osndneif8dhwlcodk
Answer:
3 times
Step-by-step explanation:
96/32=3
32+32=64+32=96
Hannah but 3.4 pounds of apples she paid $.89 per pound how much did Hana pay for apples
Answer:
3.026 $
Step-by-step explanation:
3.4 × 0.89 = 3.026 $
BRAINLIEST
Plan A:
40 + 0.45 a minute (m)
Plan B:
70 + 0.35 a minute (m)
Suppose a friend asks you which of the two plans is less expensive. How would you respond? (Answer specificly please)
Answer: I think Plan A is the cheapest
Step-by-step explanation:
I would say this because all it is is a 10 cent incline and 30 dollars cheaper, meaning it would take almost 15 weeks to earn 30 dollars on the plan a, while plan b will already be at like 100 Dollars.
I am sorry if I didn't completely answer your question but I did the best to my ability
Thanks!
The number of writing instruments in some teachers' desks is displayed in the dot plot. Which is greater the mean or the median? Explain your reasoning using the shape of the distribution.
please help..
30 points
The median is greater than the mean. From the shape of the distribution, the data set has more values on the left, so we can say it is skewed to the left. In every distribution that is skewed to the left, the median is always greater than the mean.
In the given chart we can deduce the following;
number of instruments that is 5 = 1number of instruments that is 6 = 1number of instruments that is 7 = 1number of instruments that is 8 = 1number of instruments that is 9 = 3number of instruments that is 10 = 4number of instruments that is 11 = 2number of instruments that is 12 = 1These numbers can be listed as follows;
5, 6, 7, 8, 9, 9, 9, 10, 10, 10, 10, 11, 11, 12
The median of these numbers is calculated as;
[tex]median = \frac{9+ 10}{2} = 9.5[/tex]
The mean of these numbers is calculated as;
[tex]mean = \frac{5+6+7+8+9+9+9+10+10+10+10+11+11+12}{14} = 9.07[/tex]
Thus, the median is greater than the mean.
Also, from the shape of the distribution, the data set has more values on the left, so we can say it is skewed to the left. In every distribution that is skewed to the left, the median is always greater than the mean. But if the distribution is skewed to the right, the mean is always greater than the median.
Learn more here: https://brainly.com/question/24055593
2. Represent √7 on a number line.
i have school in 2 hours and i really need help
Answer:
[tex] \sqrt[3]{8 + 6} = \sqrt[3]{14} \\ = 2.41[/tex]
I hope I helped you^_^
BRAINLIEST!! PLZ HELP
Given f (x) = x2 – 4 and g(x) = x + 3 then g (f (2)) =
Answer:
g (f(2)) = 3
Step-by-step explanation:
f (x) = x2 – 4
g(x) = x + 3
g (f (2)) =?
Find f(2) first
f (x) = x2 – 4
f (2) = 2^2- 4
= 0
Now put this in your g(x)
g(x) = x + 3
g (f(2)) = (f(2)) + 3
And u alredy know f(2) =0, so just put it in
g (f(2)) = 0 + 3
=3
Express the repeating decimal 2.1 repeating as a fraction.
Answer:
2 1/9
Step-by-step explanation:
Answer:
2.1×10=21
Step-by-step explanation:
.°.2,1/10
=2.1
The sum of 48 and itself,it's half and half of the half is added to 18
Help me solve this equation and explain how you got the answer! I’ll give you brainliest
19 + 1.5(10m – 8) = 127
[tex]19+1,5(10m-8)=127\\\\19+15m-12=127\\\\15m+7=127 \ \ /-7\\\\15m=120 \ \ /:15\\\\\huge\boxed{m=8}[/tex]
Answer:
[tex]m=8[/tex]
Step-by-step explanation:
[tex]19 + 1.5(10m-8) = 127[/tex]
Multiply both sides by 10
[tex]190+15(10m-8)=1270[/tex]
Subtract 190 from both sides
[tex]15(10m-8)=1080[/tex]
Divide both sides by 15
[tex]10m-8=72[/tex]
Add 8 to both sides
[tex]10m=80[/tex]
Simplify
[tex]m=8[/tex]