Answer:
40 kph
Step-by-step explanation:
I'm not to familiar with km but if it took you 30 minutes to travel 20km you would have to be going 40kph. It's basic math too. If you went 20 kph for 20km it would take you an hour to get there, but since they made it in 30 minutes, you just double the speed.
solve for x in the equation (x + 7) (x minus 9) = 25
Answer:
10.43398113
Step-by-step explanation:
decimal for
What is the value of the expression -48 ÷ (-4)
Answer:
12
Step-by-step explanation:
Since 48/4=12
But this time all negative
negative*negative=positve
SO it is 12 still
Answer:
12
Step-by-step explanation:
negative divided by a negative makes a positive, -48/(-4) is 12
I think its the second one but I'm not sure..
How can you write the equation for a linear function if you know only two ordered pairs for the function? Drag tiles tho complete the explanation. Tiles may be used once, more than once, or not at all.
Answer:
Explanation below
Step-by-step explanation:
First determine the slope using (y2-y1)/(x2-x1)
Then set up point slope form and add in an ordered pair for x and y to determine the y intercept: y - y1 = m(x - x1). Solve for y and you'll end up with slope intercept form.
For example: (-2,1), (3,2) find slope and y intercept.
(2-1)/(3-(-2))= 1/5
y-2=.2(x-3)
y=.2x-.6+2
y=.2x+1.4 or y=(x/5)+(7/5)
The ratio of the length to the width of a picture is 5:2. The picture is enlarged so that its length is 15 inches now. What is the width of the enlarged picture?
A. 5 in.
B. 6 in.
C. 7 in.
D. 8 in.
Answer:
b
Step-by-step explanation:
HELP PLS BRAINLIEST AND POINTS!!!!
Answer:
C
Step-by-step explanation:
Since a triangle's area is half as much as a rectangle or square, considering that they have the same width and length, you can basically eliminate choices a and b.
Choice d doesn't make sense because it's a square, now you are left with choice c.
Answer:
I think it might be d.
Help ill mark u brainliest pls
Answer:
a = 151
Step-by-step explanation:
Both angles make a supplementary angle meaning their angles will add up to 180°.
a + 29 = 180
a = 151
Find the solutions to the quadratic. *
y = (x + 13)(x - 21)
Answer:
[tex]\huge\boxed{-13, 21}[/tex]
Step-by-step explanation:
The most common way to solve for the roots of a polynomial is to use the Quadratic formula, which will return us with two values of x that make the equation equal 0.
...however, this form of the equation is already in root form. If we multiplied these two terms, we'd get [tex]x^2 - 8x -273[/tex], and when we factor that, we'd get -13 and 21.
Roots are usually written in the form [tex](x-a)(x-b)[/tex], where the zeroes will be the value of x that makes each binomial equal 0 - aka, the opposite of a and b.
The opposite of 13 is -13, and the opposite of -21 is 21.
Therefore, the solutions of this equation are -13 and 21.
Hope this helped!
5(x + 3) represents the area of the rectangle above. Which expression below is
equivalent by the Distributive Property? (4 points)
1) 5x + 3
O2) (5 + x) + 3
3) 5x + 15
O4) (x + 3) - 5
ILL GIVE BRAINLIEST
Answer: 1,2,3 becuase they are all equivalent its just logic when you think abt it
Step-by-step explanation: 4 makes no sense
Answer: I dont know
Step-by-step explanation: Math make my brain hurt, and its not 4 btw.
ps: answer is C third option
20% of 260 students at hill middle school ride a bus to school. how many students ride a bus to school?
Answer:
52 students ride a bus to school
Step-by-step explanation:
Step 1: Our output value is 260.
Step 2: We represent the unknown value with x.
Step 3: From step 1 above $260 = 100%.
Step 4: Similarly, x = 20%.
Step 5: This results in a pair of simple equations:
260 = 100%(1).
x = 20%(2).
Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have
[tex]\frac{260}{x}[/tex] = [tex]\frac{100}{20}[/tex]%
Step 7: Again, the reciprocal of both sides gives
[tex]\frac{x}{260}[/tex] = [tex]\frac{20}{100}[/tex]
⇒x=52$
Therefore, 20% of 260 is 52.
Hope this helps! :)
BRAINLIEST PLEASEEE
The number of students who ride a bus is 52.
What is a percentage?The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
Total number of students = 260
The number of students who ride a bus.
= 20% of 260
= 1/5 x 260
= 52
Thus,
The number of students who ride a bus is 52.
Learn more about percentages here:
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Carlo sold his house for P8,000,000. The real-estate agent got a 5% commission from the sales.
From his commission, he has to pay BIR tax and other obligations required for the transfer of ownership
of the property to the buyer. This expense represents 6% of his total commission. How much net
amount will he receive?
Answer:
The net amount received is 7,120,000
Step-by-step explanation:
The computation of the net amount received is shown below:
= Sale value of the house - real agent commission - expenses
= 8,000,000 - 8,000,000 × 5% - 8,000,000 × 6%
= 8,000,000 - 400,000 - 480,000
= 8,000,000 - 880,000
= 7,120,000
Hence, the net amount received is 7,120,000
The same is relevant
Write the slope intercept form of the graph plz
Answer:
y = 3x - 6
Step-by-step explanation:
slope intercept form is: y = mx + b
m is your slope, so figure it out by doing rise/run
you rise 3, over one which is 3/1, but simplifies to 3
b is your y-intercept, find it by seeing where the line crosses the y-axis, which is -6
therefore, your answer is: y = 3x - 6
It costs $3.45 to buy ¾ lb of chopped walnuts. How much would it cost to purchase 7.5 lbs of walnuts? Explain or show your reasoning.
Answer:
It would cost $ 34.5
Step-by-step explanation:
Given,
The cost of 3/4 lb of chopped walnut = $ 3.45,
So, the cost of 1 lb of chopped walnut = 4/3*3.45
=4*1.15
= $ 4.6,
Thus, the cost of 7.5 lbs of walnuts = 7.5 × cost of 1 b of walnut
= 7.5 × 4.6
= $ 34.5
Find the missing values on the diagram below. Assume that each line is evenly divided. I'm pretty confused on the right side of the number line- anyone understand this???
Answer:
A = 72 B = 50% C = 40%
Step-by-step explanation:
Each space on the bottom is worth 10%.
Each space on the bottom is worth 36.
The values of the equations are solved and a = 72 , b = 50 % and c = 40 %
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
On the number line , the values above represents the numbers and the values below represents the percentage pf numbers
So , a = 20 % of the total value of the number line
b = ( 50 - 0 ) % = 50 % of the number line
And , c = 40 % of the number line which is 144
So , 40 % of the total value = 144
Substituting the values in the equation , we get
( 40 /100 ) A = 144
Multiply by 100 on both sides , we get
40A = 14400
Divide by 40 on both sides of the equation , we get
A = 360
So , the total value of the number line is 360
where a = 20 % of the number line
On simplifying the equation , we get
a = ( 20/100 ) 360
a = 20 x 3.6
a = 72
Therefore , a = 72 , b = 50 % and c = 40 %
Hence , the equations are solved
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Which of the following lines is perpendicular to y=1/4x-3?
•
A. y = 4x
B. 4x - y = -2
C. y = -4x + 6
D. 8x - 2y = 3
E. y = 4x + 9
•
(I think it’s either C, or D, please help I don’t understand)
Answer:
The answer is
[tex]y = - 4x + 6[/tex]
Step-by-step explanation:
Negative reciprocal for the slope.
The equation of the perpendicular line will be y = -4x + d. Then the correct option is C.
What is the equation of a perpendicular line?Let the equation of the line be y = mx + c. Then the equation of the perpendicular line that is perpendicular to the line y = mx + c is given as y = -(1/m) + d. If the slope of the line is m, then the slope of the perpendicular line will be negative 1/m.
The equation of the line is given as,
y = (1/4)x - 3
The slope of the line is 1/4. Then the slope of the perpendicular line will be - 4. Then the equation of the line is given as,
y = -4x + d
The equation of the perpendicular line will be y = -4x + d. Then the correct option is C.
More about the equation of a perpendicular line link is given below.
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Which mathematical property is demonstrated?
7 + 9 + 3 = 7 + 3 + 9
commutative property of addition
associative property of multiplication
commutative property of multiplication
associative property of addition
Answer:
I am pretty sure that the answer to this question is A: comunative property of addition
Step-by-step explanation:
I'm 99% sure
I'm sorry if it turns out to be wrong
cause I have not yet finished the test
With explanation please, step by step if is necessary, I need heeelp!
Answer:
[tex]area \: of \: the \: circle \: = \: \pi {r}^{2} \\ so \\ \: 10 = \pi {r}^{2} \\ {r}^{2} = \frac{10}{\pi} \\ r = \sqrt{ \frac{10}{\pi} } \\ r = \frac{ \sqrt{10} }{ \sqrt{\pi} } \\ r = \frac{ \sqrt{10} \times \sqrt{\pi} }{ \sqrt{\pi} \times \sqrt{\pi} } \\ r = \frac{ \sqrt{10\pi} }{\pi} \\ since \: d \: = 2r \\ so \\ d = 2( \frac{ \sqrt{10\pi} }{\pi} ) \\ \\ d = \frac{2 \sqrt{10\pi} }{\pi} \\ since \: circumferenc \: = 2r\pi \\ so \: circumference = 2( \frac{ \sqrt{10\pi} }{\pi} )\pi \\ = 2( \sqrt{10\pi} ) \\ = 2 \sqrt{10\pi} [/tex]
A quantity with an initial value of 8100 decays continuously at a rate of 0.95% per year. What is the value of the quantity after 96 months, to the nearest hundredth?
Answer:
20163.299
Step-by-step explanation:
Initial value = 8100
Rate r = 0.95% = 0.0095
t = 96 month
Therefore, Value of the quantity after 39 decades = Initial value*e^(rt)
= 8100*e^(0.0095*96)
= 8100*e^(0.912)
= 8100*2.48929615041
= 20163.298818321
= 20163.299
So, the value of the quantity after 96 months is 20163.299
Answer:
7507.21
Step-by-step explanation:
Solve 3(5x-4) < 15x
O. X < 4
O no solution
O x > -4
O all real numbers
Answer:
All real numbers
Step-by-step explanation:
3(5x - 4) < 15x
~Distribute left side
15x - 12 < 15x
~Subtract 15x to both sides
-12 < 0
Best of Luck!
In a largo container of balls, there are at least 5 red balls for
overy yollow ball. If there are 47 yellow balls in the container,
which of the following inequalities represents the number of red
balls, r?
please awnser photo will give brain if you are first
Answer:
THE SECOND ONE
Steve is creating a web page. He starts with a font of 5 9/10 points and decreases it by 1/2. He decreases it again by 6/10 points. Steve then realizes that the font is to small to read easily and increases it by 1 4/5 points. Which is the best estimate of the font's final size?
Answer:
6 3/5 points
Step-by-step explanation:
Steve is creating a web page.
Step 1
He starts with a font of 5 9/10 points and decreases it by 1/2.
Hence: Current font
= 5 9/10 - 1/2
= 5 + ( 9/10 - 1/2)
Lowest common denominator
= 10
= 5 + (9 - 5/10)
= 5 + 4/10
= 5 + 2/5
= 5 2/5 points
Step 2
He decreases it again by 6/10 points.
Current fonts
= 5 2/5 - 6/10
= 5 + ( 2/5 - 6/10)
Lowest common denominator
= 10
= 5 + (4 - 6/10)
= 5 + (-2/10)
= 5 - 1/5
= 4 4/5 points
Step 3
Steve then realizes that the font is to small to read easily and increases it by 1 4/5 points.
New font
= 4 4/5 points + 1 4/5 points
Lowest common denominator = 5
= 4 + 1 + (4/5 + 4/5)
= 5+ ( 4 + 4/5)
= 5 +(8/5)
= 6 3/5 points
The best estimate of the font's final size is 6 3/5 points
40.42 divided by 4.3 with steps
Answer:
9.4 is the answer.
Step-by-step explanation:
What is the answer to this?
Answer:
The answer is (1,-5)! Try using Desmos graphing calculator next time as well :)
Step-by-step explanation:
For a school fund-raiser, 10 students sold a total of 90 boxes of cookies. Which of the following can be calculated from this information?
Answer: what of the following
Step-by-step explanation:
Answer:
is it multiple choice
Step-by-step explanation:
Convert 5 hours to minutes.
Answer:
300 min
Step-by-step explanation:
60 times 5 :)
a = 3.6 and b = 10, then ab = _______. *
Answer:
36
Step-by-step explanation:
3.6 * 10 = 36
Answer:
36
Step-by-step explanation:
if a = 3.6 and b= 10 and if we want to find ab we will just multiply them
3.6 x 10 = 36
(If you multiply a decimal by 10, the decimal point will move one place to the right. If you divide a decimal by 10, the decimal point will move one place to the left. If you multiply or divide by any power of 10, it will move a number of spaces equal to the number of 0's.)
have a wonderful day
At the nearest wholesale 3 bags of cereal cost 28.75 at this rate how much would 5 bags of cereal cost
Answer:
5 bags will cost $47.09
Step-by-step explanation:
Hope this helped have an amazing day/month/year!
All of the following monomials are partial factors of the polynomial 12xº y2 – 18x2y + 6x?y? EXCEPT:
Answer:
80
Step-by-step explanation:
27) Solve: x – 9 = 20
28) Solve: 1/3 x 5/8
29) Solve: 4 x 4 x 4 = ?
Answer:
bghjgkk7686968679
hjkggkhk67896869
ghjkgh
Step-by-step explanation:
hjkh7689
Answer:
29, 5/24 ,64
Step-by-step explanation:
27) x-9=20
x=20+9
x=29
28) 1/3*5/8
1*5/3*8
5/24
29) 4*4*4
4*4=16
16*4
64