Answer:
I believe the answer is 6
Step-by-step explanation:
f(x) = 3x - 15 -- plug 7 into x (that's how many candy bars he's buying)
f(x) = 3(7) - 15 -- solve the equation (just know that 3(7) is the total, and 15 is the amount of money on his gift card.)
f(x) = 21 - 15
f(x) = 6 -- your answer
I hope this helps :)
express 0.0003 in Scientific notation by counting decimal places
Answer:
When we write numbers in scientific notation, we must put the first non-zero digit ahead of the decimal. In this case, the decimal would be behind the 3. Because we moved the decimal places four times to the right, our exponent will be 4. Thus,
3.00 x 10⁻⁴
we can express 0.0003 as 3 × 10⁻⁴ in scientific notation.
To express 0.0003 in scientific notation, we count the number of decimal places from the original number until we have a single non-zero digit before the decimal point. In this case, we have four decimal places before the non-zero digit (3).
Thus, we can express 0.0003 as 3 × 10⁻⁴ in scientific notation. The negative exponent (-4) indicates that we move the decimal point four places to the left to obtain the original value.
In summary, by counting the decimal places, we can express 0.0003 as 3 × 10⁻⁴ in scientific notation.
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Find the measure of angle J
Answer:
36
Step-by-step explanation:
Answer: 36°
Step-by-step explanation: The three angles of a triangle always equal 180 when added together. Since we have two angles already, we simply subtract those from 180
180 - 115 = 65
65 - 29 = 36
J = 36
Write a quadratic equation with 7 and as its roots. Write the equation in the form ax^2+ bx + C = 0,
where a, b, and c are integers.
The equation in the form ax² + bx + c of the quadratic equation with 7 and 2/5 as it root is x² - 33 / 5 x + 14 / 5
The root of the quadratic equation are 7 and 2/5 .
The equation should be written in the form
ax² + bx + c
where
a, b and c are integers.
Therefore,
x - (7) and x - 2/5
(x - 7)(x - 2/5)
open the bracket
x² - 2/5x - 7x + 14 / 5
x² - 33 / 5 x + 14 / 5
where
a = 1
b = -33 / 5
c = 14 / 5
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80 L is what percent of 400 L tank
Answer:
50%
Step-by-step explanation:
BRAINLIEST PLEASE
Answer:
the percentage of 80L from 400L is 20%
Step-by-step explanation:
in order to find the percentage of something you need to divide the total amount from the number you want to find the percentage of:
80 / 400 = 0.2
we now multiply 0.2 by 100 to turn it into a percentage:
0.2 * 100 = 20%
Which measure describes how much a sample mean varies when different samples are chosen?
Step-by-step explanation:
the most common measure of how much sample mean differ from each other is the standard deviation of the sampling distribution of the mean. this standard deviation is called the standard error of the mean
a school has 825 students and 55 teachers how ,many students are per teacher unit rate
Answer:
It would be 15 students per teacher unit
Step-by-step explanation:
You divide 825 students by 55 teachers
Choose the point on the terminal side of -210°.
Answer:
C
Step-by-step explanation:
Since the anlge of -210 degrees falls into the fourth quadrant the x-coordinate is positive and the y-coordniate is negative.
the ratio of white socks to brown socks is
PLZ HELP ASAP
Answer:
0.875 is the ratio from white to brown socks.
1. What graph shows a line with an x-intercept of 5?
Answer:
its anything that crosses the vertical ( | ) line at the point (0,5)
Step-by-step explanation:
anything like the picture
help me with this i dont really get it
Wyatt is a high school basketball player. In a particular game, he made some three point shots and some two point shots. Wyatt made a total of 12 shots altogether and scored a total of 32 points. Write a system of equations that could be used to determine the number of three point shots Wyatt made and the number of two point shots he made. Define the variables that you use to write the system.
Answer:
Man wf
Step-by-step explanation:
Calculate the average rate of change for the given graph from x = 3 to x = 5 and select the correct answer below.
Answer:
Average rate of change between x = 3 to x = 5 is 0.
Step-by-step explanation:
Given quadratic function s passing through two points (3, 0) and (5, 0).
Average rate of change of a function between x = a and x = b is given by,
Average rate of change = [tex]\frac{f(b)-f(a)}{b-a}[/tex]
From the graph attached,
Average rate of change between x = 3 to x = 5 will be,
= [tex]\frac{f(5)-f(3)}{5-3}[/tex]
= [tex]\frac{0-0}{5-3}[/tex]
= 0
Therefore, average rate of change between x = 3 to x = 5 is 0.
Answer: The average rate of change for the given graph from x=3 to x=5 is 0
HELP PLEASE!
which expressions are equivalent to square root 1,120y^3
Answer:
the answer would be 2 * 2 * y √2 * 5* 7 * y
Step-by-step explanation:
Which fraction names the shaded part of the set?
The fraction of the shaded part of the set is 1/3.
Given is a figure in which there are total 12 parts with 4 parts shaded.
We need to find the fraction of the shaded part of the set,
To find the fraction of the shaded part of the set, we need to determine the ratio of the number of shaded parts to the total number of parts.
In this case, the total number of parts is 12, and the number of shaded parts is 4.
Therefore, the fraction of the shaded part can be calculated as follows:
Fraction of shaded part = Number of shaded parts / Total number of parts
Fraction of shaded part = 4 / 12
Simplifying the fraction, we get:
Fraction of shaded part = 1 / 3
So, the fraction of the shaded part of the set is 1/3.
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pls help I will not let me add the screenshot so I'm going to try and explain. so there is a rectangle the top measures 10m and the side measures 6m then there is a small rectangle inside of it the top of that one measures 2m and the side measures 1.5m then there is a circle and the radius is 2m.
belle wants to reseed the grass in her garden.
the garden is 10m long and 6m wide
there is a vegetable patch that is 2m long and 1.5m wide there is a circular pond that has a radius 2m each bag of grass seed costs £4.60 and covers 10m^2 work out the total cost to reseed the garden
Using a copy machine, a drawing of a
tower that was 24 inches tall was reduced to a
tower that measured 8 inches high. What was
the scale factor used for the reduction?
Answer:
The scale factor reduction is 3.
brainiest
Step-by-step explanation:
PLEASE HELP From 12.8 meters to 0.7 meters
does it percent Increase or Decrease
Identify next three numbers in this sequence: 3, 12, 6, 24, 18, … 27, 13.5, 22.5 72, 66, 264 72, 36, 144 27, 21, 30
Answer:
its 72, 36, 144
Step-by-step explanation:
yes it is!!!
Which fraction can be replaced with 0 when estimating with fractions?
Answer:
None
Step-by-step explanation:
Answer:
[tex] \frac{0}{1} [/tex]
[tex] \frac{0}{2} [/tex]
[tex] \frac{0}{72} [/tex]
[tex] \frac{0}{-56} [/tex]
[tex] \frac{0}{10} [/tex]
any number as the denominator and 0 as the numerator can be replaced in the place of 0.
Step-by-step explanation:
[tex] \frac{0}{any \: \: integer} = 0[/tex]
Calcium-41 is being used in studies testing the effectiveness of drugs for preventing osteoporosis. The half-life of calcium-41 is 100,000 years. If 20 grams of calcium-41 are present initially, how long would it take until only 2 grams
remains?
Answer:
332,193 years
Step-by-step explanation:
From the question above, we are to calculate the time in an half life question, hence, the formula is given as
t = In(Nt/No) ÷ -(In2/t½)
Where
t = time is takes for an substance to decay or reduce
Nt = Amount of sample after time = 2g
No = Initial amount of sample = 20g
t½ = Half life = 100,000 years
Hence,
t = In(2/20) ÷ (In 2/ 100,000)
t = 332192.80948874 years
Approximately = 332,193 years
THIS IS URGENT!!! WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER
Which functions are increasing?
Select all answers that are correct.
Answer: b and c or the bottom left and the top right answers
Step-by-step explanation: brainliest plz
Answer:
top right
and
bottom left
Step-by-step explanation:
increasing go from left to right upwards
Alice grew 24 flowers with 3 seed packets. With 6 seed packets, how many total flowers can Alice have in her garden? Assume the relationship is directly proportional.
? flowers
Answer:
48
Step-by-step explanation:
7.) Зу = 2-х
2y + 10 = 6x
Answer:
By cross multiplication method
x=
(a
1
b
2
−a
2
b
1
)
(b
1
c
2
−b
2
c
1
)
&
y=
(a
1
b
2
−a
2
b
1
)
(c
1
a
2
−c
2
a
1
)
Where a
1
x+b
1
y+c
1
=0 & a
2
x+b
2
y+c
2
=0
are 2 lines
⇒x=
2(−2)−(3×3)
3(−6)−(−2)(−17)
=
−13
−52
=4
y=
2(−2)−(3×3)
(−17)3−(−6)2
=
−13
−39
=3
⇒
x=4&y=3
Write the ratio as a fraction in simplest form.
14 feet to 8 yards
Answer:
1 inch-8 lot of math make me brainliest
Step-by-step explanation:
3ft-8yd
or 36 in- 288in
18-144
9-72
3-24
if 6n+6=36 what does 25n equal
Answer:
125
Step-by-step explanation:
36-6=30
30/6=5
25n= 25 x 5= 125
Write the slope intercept form of the equation with the given point and slope m=5 through (-1,-3)
Answer:
Y = 5x + 2
Step-by-step explanation:
Y= Mx + b
eighteen 2.5- gallon buckets are needed to fill a cistern of water
How many 3-gallon buckets of water will fill the cistern.
Answer:
15 3-gallon buckets of water will fill the cistern
Step-by-step explanation:
Eighteen 2.5- gallon buckets are needed to fill a cistern of water
This means, 2.5 gallon buckets in 18 places
2.5 gallons × 18 = 1 cistern of water
45 gallons = 1 cistern of water
How many 3-gallon buckets of water will fill the cistern.
Number of 3-gallon bucket in a cistern = Total gallons of bucket in one cistern / 3-gallon buckets
= 45 gallons / 3-gallon buckets
= 15
Number of 3-gallon bucket in a cistern = 15
15 3-gallon buckets of water will fill the cistern
8( y- 7) please answer this I will give brainliest
Answer: 8y − 56
Step-by-step explanation:
Multiply using the distributive property.
Which graph shows y and x in a proportional relationship? Pls helpppp
Answer:
I cannot see all of the graphs, but D looks to be the right answer.
Step-by-step explanation:
I hope this helps!! Have a great day!!!
Find the midpoint of the line segment with the given endpoints.
(-10,-4), (6,-5)
Multiplying Fractions and Mixed Numbers
Question 5: 20 pts
A computer processor cosis $69.00. It is expected that in 8 months the processor will cost 1/3 its
current price. How much Will it cost in 8 months ?
O $206.39
O $22.96
$207.00
$23.00