Answer:
x = ± 5
Step-by-step explanation:
x² - 25 = 0 ( add 25 to both sides )
x² = 25 ( take square root of both sides )
x = ± [tex]\sqrt{25}[/tex] = ± 5
That is x = - 5, x = 5
solve this equation x/8+4=12
Answer:
x=64
Step-by-step explanation:
x/8+4=12
x/8=12-4
=8
x=8×8
=64
If a car top speed is 180km/h how far will it go in 3 hours
The line y=−0.5x+b passes through the points (1,5.5), (3,p), (4,4), and (7,n). Find b, n, and p.
Step-by-step explanation:
Finding b
If we use the given slope and use one of the points to write the equation in point-slope form (y - y₁) = m(x - x₁)), we can rearrange it to find the y-intercept:
Using (4,4)
⇒ y - 4 = - 0.5 (x - 4)
y - 4 = - 0.5 x + 2
y = -0.5 x + 6
∴ b = 6Calculating 'n' and 'p'
We can find n and p by plugging the points into the newly found equation y = -0.5 x + 6.
For n using (7, n)
since y = -0.5 x + 6
n = -0.5 (7) + 6
∴ n = 2.5For p using (3,p)
since y = -0.5 x + 6
p = - 0.5 (3) + 6
p = - 1.5 + 6
p = 4.5Checking the answer
We can check the answer we got in two ways:
We could also have found n a different way:Using the points (4, 4) and (7, n) as (x₁, y₁) & (x₂, y₂) respectively
The slope of the line (m) = (y₂ - y₁) ÷ (x₂ - x₁)
- 0.5 = (n - 4) ÷ (7 - 4)
- 0.5 = ⁿ⁻⁴/₃ [multiply both sides by 3]
- 1.5 = n - 4 [add four to both sides]
n = 2.5 [this matches the value of n we found]
We can plot the line and see if it goes through the points we found. As seen in the graph below, the line passes through all the points.
Plsss help me blah blah blah I need 20 characters blah blah
Answer:
A only
Step-by-step explanation:
I knew a good trick to where if all the digits in your number add up to a multiple of 3, the original number is divisible by 3.
5 + 0 + 9 + 9 + 4 = 27
8 + 8 + 0 + 0 + 7 = 23
4 + 1 + 9 + 5 + 7 = 26
6 + 5 + 8 + 3 + 6 = 28
1 + 9 + 7 + 9 + 9 = 35
1 + 9 + 1 + 2 + 1 = 14
The only number divisible by 3 is 50,994
guy pls help me!!!!!
For brainily please help :/
Answer:
AB
Step-by-step explanation:
They are the shortest combined side
7.) A bank records deposits as positive numbers
and withdrawals as negative numbers.
Michael withdrew $150 from his bank account 3
times. What is his balance after the 3 withdrawals?
Can anyone help me with this question please ?
Answer:
-0.20412414523 there you go
please help this is an 8 grade question
Please help me with this homework
math you do math okay math math math math math
thoả mãn x biết 2(x+5)=x^2+5x
Answer:
= 2
= − 5
Step-by-step explanation:
someone please help. Giving brainliest!!
Answer:
A. None of these
Step-by-step explanation:
The largest perfect square under 100 would actually be 81 (9 x 9)
90 and 99 are not perfect squares and 64 is smaller than 81.
Answer:
a. none of these
Step-by-step explanation:
10 * 10 = 100, so 100 is a perfect square.
The next smaller perfect square is 9 * 9 = 81, but 81 is not in the choices.
Answer: a. none of these
Write the equation of a line, in slope-intercept form, that has a slope of m=9 and passes through the point (4, 31) .
Enter your answer in the box, without spaces.
Answer:
[tex]\sf y=9x-5[/tex]
Step-by-step explanation:
[tex]\begin{aligned}&\sf y-y_1=m(x-x_1) \\&\sf y-31=9(x-4) \\&\sf y-31=9x-36 \\&\sf y=9x-36+31 \\&\boxed{\sf y=9x-5} \end{aligned} [/tex]
What is the opposite reciprocal of the slope -7/9?
Answer: -9/7
Step-by-step explanation:
7.Austin has no money so he borrowed $28 over eight days from Kayla. How much did Austin borrow from Kayla each day? Show your work
8.The temperature dropped 6 degrees for 9 hours. What was the total change in temperature.
14.The product of two integers is -24 and the sum of the two integers is -5. What are the two integers?
The measures of the angles of a triangle are shown in the figure below. Solve for x.
Answer:
x= 104
Step-by-step explanation:
Angle in a triangle is 180
35+41+x=180
76+x=180
x=180-76
x=104
help
What is the rate of return when 10 shares of Stock
A, purchased for $15/share, are sold for $210? The
commission on the sale is $6.
Rate of Return = [?] %
Give your answer as a percent rounded to the
nearest tenth
Please help! I’ll give brianliest to the correct answer!
Answer:
y = 1.5x + 9
(y = height; x = number of cups)
Step-by-step explanation:
let x = number of cups
let y = height of the stack
the first cup will add 9 to the height (7.5 + 1.5)
so 9 is the y-intercept
for each additional cup, 1.5 will be added
so y = 1.5x + 9
A cartoon of staples has 50 packages. The carton contains 25,000 staples in all. Each package has an equal number of staples. How many staples are in each package? Explain how to use a basic fact to find the answer.
michael and his brother allen played basketball basketball each basket was worth 5 points michale scored 35 points allen scored 20 points what is the total number of baskets made during this game
Graph y=−47x+1. Use the line tool and select two points on the line.
Answer:
Ok so I don't have a graphing thing on my computer but on the y axis you are going to put a dot on the one then go up 47 and to the right 1 and put a dot sorry that is as much as i can help you
The vertices of a triangle are P(7. -4), Q(-7, -8), and R(8,4). Name the vertices of the image
reflected in the y-axis.
Answer:
P' (-7, -4) , Q' (7, -8) , R' (-8, 4)
Step-by-step explanation:
Reflection in the y -axis:
The rule for a reflection over the y-axis is (x, y) → (−x, y).
P (7, -4) → P' (-7, -4)
Q (-7, -8) → Q' (7, -8)
R (8, 4) → R' (-8, 4)
Finding the nth term, please help.
Answer:70
Step-by-step explanation: notice the pattern is adding by 8 after the first term
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A number written in words is in:
expanded form
standard form
word form
exponential form
Answer:
Standard form
Two thousand n fifty dollars
Answer:
Standard Form
Step-by-step explanation:
Standard Form is how people write numbers in equations as words.
Which of the following makes sense as an answer to 8.9 *7.15
Answer:
so whats the answer
Step-by-step explanation:
You ask your best friend to lend you $300 to buy your favourite toy. She says she can lend you the money only if you give her an extra $3 for every three months that pass before you return it. What is the total amount you must pay her if you return it after nine months?
The answer is $309
Since its $3 extra per 3 months and 9 months pass it has to be an extra $9 for the $9 months.You already had to pay back the 300 so the equation would be (300+9=309)
Someone pls help me I will make you brain
Answer: Cant see or read
Step-by-step explanation:
please help me
no random links pls
15 points
If a rhombus is inside a regular hexagon, what is the size of x
Answer: x = 60°
Step-by-step explanation:
The rest of the question is the attached figure.
Given: A rhombus inside a regular hexagon, work out the angle x.
As shown
ABCDEF is a regular hexagon.
The regular hexagon have 6 congruent angles, and the sum of the interior angles is 720°
So, the measure of one angle of the regular hexagon = 720/6 = 120°
So, ∠F = ∠BAF = 120°
AFEG is a rhombus.
The rhombus have 2 obtuse angles and 2 acute angles.
∠F is one of the obtuse angles of the rhombus = 120°
∠F and ∠FA G are supplementary angles
So, ∠F + ∠FA G = 180°
∴ ∠FA G = 180° - ∠F = 180 - 120 = 60°
∴ x = ∠GAB = ∠BAF - ∠FA G = 120 - 60 = 60°
So, the measure of the angle x = 60°