Answer:
In problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. To find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.
Step-by-step explanation: i hope this helps if it does vote me the brainliest or like and rate 5 starts if u cant vote me
Someone plzz answer only number 9 easy!!
(Correct will mark as brainliest)
Thanks guys
Answer:
4×102 +5×101 +6×100 +8 × 10-1 +1 × 10-2
I hope that made sense lol
Answer:
400 + 50 + 6 + 0.8 + 0.01
Step-by-step explanation:
This is the answer because:
1) Expanded form means to write a number with its full value. It is shown as a sum of each digit multiplied by its matching place value
2) Therefore, the answer is 400 + 50 + 6 + 0.8 + 0.01
Hope this helps!
What is f(5) for the function f(x)=2x+7
Answer:
Solution:
f(5)=2×5+7
=10+7
=17
Answer:
[tex]f(5)=17[/tex]
Step-by-step explanation:
[tex]f(5)=2(5)+7\\f(5)=10+7\\f(5)=17[/tex]
math 1 work it out please w-2+2w=6 + 5w
Answer:
w = -4
Step-by-step explanation:
w - 2 + 2w = 6 + 5w
Add 2 to both sides.
w + 2w = 8 + 5w
Subtract w from each side.
2w = 8 + 4w
Subtract 4w from each side.
-2w = 8
Divide.
w = -4
What is the slope of the equation: y = 4
Answer:
0
Step-by-step explanation:
Answer:
There's no slope or a slope of 0
Step-by-step explanation:
The variables "mx" represent the slope of a linear line.
The area, A, of a square with a side of length x is given by A = x^2? Use this relationship to verify that doubling the length of the side of a square floor increases the area of
the floor by a factor of 2^2
Answer:
Hi
Step-by-step explanation:
Find the midpoint of points A(8,6) and B(0, 3)
Answer:
Midpoint = (4,4.5) or written as fraction (4,[tex]\frac{9}{2}[/tex])
Step-by-step explanation:
[tex]MP= (\frac{x_1+x_2}{2}),(\frac{y_1+y_2}{2} ) \\MP= (\frac{8+0}{2}),(\frac{6+3}{2} ) \\MP= (\frac{8}{2}),(\frac{9}{2} ) \\MP= (4,4.5)[/tex]
1.) 6 quarts liters *(1 QUART = 0.946 LITERS) help please
Answer:
Let me figure it out first then I will give you the answer.
Please help me
I need to submit it now!!
Answer:
Alicia is right, 11 is the answer
Step-by-step explanation:
ItS EaSy
Answer:
it is eleven I think first add 12 plus 3 then subtract 3 u get eleven so Alicia is right ✅
What is the inverse for x+7/4
(Will give brainliest.)
Answer:
0.25(4x + 7)
Step-by-step explanation:
Prove that if 5(m - 1) = -25, then m = -4.
Answer:
The equation is true
Step-by-step explanation:
First, input -4 instead of m in the equation:
5(-4 - 1) = -25
Then, distribute:
-20 - 5 = -25
Finally, simplify:
-25 = -25
This equation is true, and that's how you prove it.
Hope this helps!
Answer:
M= -4
Step-by-step explanation:
1. Distribute the 5 into the parentheses
5m-5=-25
2. Now add 5 on both sides
5m=-20
3. Now divide 5 by -20
m=-4
if a+b= -1 then the value of a^3+b^3 - 3ab= ?
Answer:
-1
Step-by-step explanation:
[tex](a + b)^{3} = {a}^{3} + {b}^{3} + 3ab(a + b) \\ ( - 1)^{3} = {a}^{3} + {b}^{3} + 3ab( - 1) \\ - 1 = {a}^{3} + {b}^{3} - 3ab\\ \\ \huge \red{ \boxed{{a}^{3} + {b}^{3} - 3ab = - 1}}[/tex]
Lucy is going to the grocery store. She will buy 5 items. Every item she will buy is $2. Afterward, she will buy herself a milk shake for $3. How much will she spend at the store?
Algebra 1. 9th Grade
-12-8=5/2x
Answer:
-1/8
Step-by-step explanation:
1) -12 - 8 = -20
2) -20 = 5/2x
3) (-20)(2x) = 5
4) -40x = 5
5) x = -5/40 = -1/8
Hope this helps!
Alebra 1 - 10pts
Solve for x.
x/4 ≥−8
A. x≤−2
B. x≤−32
C. x≥−32
D. x≥−2
Answer:
C. x≥−32
Step-by-step explanation:
Multiply both sides by 4
Answer:
C, you have to multiple both sides. Let me know if you need it explained further.
Step-by-step explanation:
A dolphin is at the surface of rhe water and then descends to a depth of 4 1/2 feet then the dolphin swims down another 2 3/4 feet what is the location of the dolphin relative to the surface of the water
Answer:
down 7 1/4 feet
Step-by-step explanation:
4 1/2 + 2 3/4 = 4 2/4 + 2 3/4 = (4+2) +(2/4 +3/4) = 6 +5/4 = 7 1/4
The dolphin is 7 1/4 feet below the surface.
Answer:
Step-by-step explanation:
2(4x - 3)=3(x+8)
The equation above is the problem I’m stuck on, I’m in algebra two and it’s been awhile since we’ve gone over this type of equation.
Answer:
x = 6
Step-by-step explanation:
2(4x - 3) = 3(x + 8)
1. Distribute the 2 and 3 into the parentheses.
2(4x) + 2(-3) = 3(x) + 3(8)
= 8x - 6 = 3x + 24
2. Subtract 3x from both sides.
8x - 3x - 6 = 3x - 3x + 24
= 5x - 6 = 24
3. Add 6 on both sides.
5x - 6 + 6 = 24 + 6
5x = 30
4. Divide by 5.
5x ÷ 5 = 30 ÷ 5
x = 6
Hope that helps.
(1/4)^-3/2. The topic is indices.
Answer:
8
Step-by-step explanation:
The minus turns the base upside down
(1/4)^-3/2 = 4^(3/2)
The square root of 4 is 2
2^3 = 8
So the answer is 8.
How much would the account earn in 1 year of simple interest at a yearly rate of 2.33%? Round to the nearest cent.
Answer:
who knows what is the whole question
Step-by-step explanation:
Polynomials: I’ll give brainliest. What is the perimeter of this?
2(5x - 4)
Step-by-step explanation:Perimeter formula
P = 2l + 2w
P = 2(3x - 5) + 2(2x + 1)
= 6x - 10 + 4x + 2
= 10x - 8
= 2(5x - 4)
Name the y-intercept
During the summer months the water level in Marthas pool decreases by about 1/2 inch each day due to evaporation which equation shows the approximate total change in inches to the water level in a pool after 30 summer days
Answer:
Option B (second one to the right)
Step-by-step explanation:
Solving this equation:
-1/2(30)= -15
-1/2 x 30 = -15
(2 days = 1 inch lost)
What is the value of s in the equation 3r= 10+5s when r = 10
Answer:
s = 4
Step-by-step explanation:
Given: 3r = 10+5s
Fill in r: 3(10) = 10 + 5s
Multiply: 30=10+5s
Subtract: 30-10=5s
Divide: 20/5=s
Answer: 4=s
What are the steps to solving this limit?
Answer:
lim(x---->0) = -5
Step-by-step explanation:
first: sin(x-π/2)= -cosx
so the equation will be :
lim(x---->0) = [-6cos(ax)-1}/cosx
solve :
lim(x---->0) = [-(6cos(a(0))-1}/cos(0)
cos0=1
lim(x---->0)=(-(6(1)-1)/1
lim(x---->0)=-6+1/1
lim(x---->0)=-5
Solve for x in simplest form. 9=8/5(x+5)
Answer:
5/8 =x
Step-by-step explanation:
9=8/5(x+5)
Multiply each side by 5
5* 9=5*8/5(x+5)
45 = 8(x+5)
Distribute
45 = 8x+40
Subtract 40 from each side
45-40 = 8x+40-40
5 = 8x
Divide each side by 8
5/8 = 8x/8
5/8 =x
for which equations below is x = -3 a possible solution ?
lxl = 3
lxl = -3
l-xl = 3
l-xl = -3
-lxl = -3
Answer:
-/x/ = -3 (Sorry I couldn't put the lines)
Step-by-step explanation:
Negative and a negative = a positive
I hope this helps you :)
Find the value of k
Step-by-step explanation:
[tex]y = ax + b \\ a = \frac{y1 - y2}{x1 - x2} = 3 \\ y = 3x - 1 \\ y = (3 \times 4) - 1 = 11 = k[/tex]
Roselyn is driving to visit her family, which live 150150150 kilometers away. Her average speed is 606060 kilometers per hour. The car's tank has 202020 liters of fuel at the beginning of the drive, and its fuel efficiency is 666 kilometers per liter. Fuel costs 0.600.600, point, 60 dollars per liter. How long can Roselyn drive before she runs out of fuel?
Answer:
Your answer is 2 gallons
Step-by-step explanation:
You have $60 in your bank account. Each week you plan to deposit $8 from your allowance and $25 from your paycheck. The equation b=60 + (25+ 8)w gives the amount b in your account after w weeks. How many weeks from now will you have $220 in your bank account?
Answer: 3 weeks
Step-by-step explanation:
25 + 8 = 33
33+ 60 = 93
220 / 93 = 2.3 or 3 weeks
Hope this helps
Plz mark brainliest
A city has h a population of 2549786 people
Step-by-step explanation:
Braziliannngffcghjhhb
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The scale drawing of a rectangular city park measures 10.0 cm by 5.0 cm. The scale of the drawing is 1.0 cm = 4.5 m. What is the area, in square meters, of the park?
Answer:
2250m^2Step-by-step explanation:
In this exercise, we are going to be converting from cm to m, since we are asked to provide our answers in meters
Given that the scale is 1.0 cm = 4.5 m
let us convert the 10cm to the actual length
1 cm------4.5m
10 cm------x
x= 4.5*10
x= 45m
Also for the 5 cm
1 cm------4.5m
5 cm------x
x= 5*10
x= 50m
Hence the area of the actual rectangular park is
45*50= 2250m^2