Answers
Answer:
[tex] \huge \boxed{ \boxed{ \sf \: y = x + 15}}[/tex]
Step-by-step explanation:
to understand thisyou need to know:linear equationlinear equation word problemsPEMDAStips and formulas:linear equation:y=mx+blet's solve:all we need to care about the middle condition which is
the new test score is 15 points more than the original scoregiven that
original score is x
New score is y
if you pay attention to the given condition
we can find it same as linear equation
therefore
according to the question
the equation is
y=x+15Related Questions
(1 point) Carbon dating is often used to determine the age of a fossil. For example, a humanoid skull was found in a cave in South Africa along with the remains of a campfire. Archaeologists believe the age of the skull to be the same age as the campfire. It is determined that only 2% of the original amount of carbon-14 remains in the burnt wood of the campfire. Estimate the age of the skull if the half-life of carbon-14 is about 5600 years.
Answers
Answer:
The estimated age of the skull is 39118 years.
Step-by-step explanation:
The amount of the substance after t years is given by:
[tex]A(t) = A(0)(1-r)^t[/tex]
In which A(0) is the initial amount, and r is the decay rate.
The half-life of carbon-14 is about 5600 years.
This means that [tex]A(5600) = 0.5A(0)[/tex]. We use this to find r, or 1 - r, to replace in the equation. So
[tex]A(t) = A(0)(1-r)^t[/tex]
[tex]0.5A(0) = A(0)(1-r)^{5600}[/tex]
[tex](1-r)^{5600} = 0.5[/tex]
[tex]\sqrt[5600]{(1-r)^{5600}} = \sqrt[5600]{0.5}[/tex]
[tex]1 - r = (0.5)^{\frac{1}{5600}}[/tex]
[tex]1 - r = 0.9999[/tex]
So
[tex]A(t) = A(0)(0.9999)^t[/tex]
Only 2% of the original amount of carbon-14 remains in the burnt wood of the campfire.
This is t for which [tex]A(t) = 0.02A(0)[/tex]. So
[tex]A(t) = A(0)(0.9999)^t[/tex]
[tex]0.02A(0) = A(0)(0.9999)^t[/tex]
[tex](0.9999)^t = 0.02[/tex]
[tex]\log{(0.9999)^t} = \log{0.02}[/tex]
[tex]t\log{0.9999} = \log{0.02}[/tex]
[tex]t = \frac{\log{0.02}}{\log{0.9999}}[/tex]
[tex]t = 39118[/tex]
The estimated age of the skull is 39118 years.
5-[6-2-(1-8) -3 +6]+5 =
Answers
Answer:
-4
Step-by-step explanation:
5 - [6 - 2 - (1 - 8) - 3 + 6] + 5 =
Simplify.
5 - [6 - 2 + 7 - 3 + 6] + 5 =
Subtract
5 - [4 + 7 - 3 + 6] + 5 =
Add
5 - (11 - 3 + 6) + 5
Subtract
5 - (8 + 6) + 5
Add
5 - 14 + 5
Simplify by adding and subtracting.
-4
good luck, i hope this helps :)
Answer:
[tex]sln \\ 5 - (6 - 2 - (1 - 8) - 3 + 6) + 5 \\ 5 - (4 - ( - 7) + 3) +5\\ 5 - (4 + 7 + 3)+5 \\ 5 - (14) +5\\ 5 - 14 \\ - 9[/tex]+5
=-4
I hope this help
A cylinder has a diameter of 19 inches. It has a volume of about 3,400.62
cubic inches. Find the height.
Answers
Estimate 9/16 to the lowest terms
Answers
Answer:
9/16
is already in the simplest form. It can be written as 0.5625 in decimal form (rounded to 6 decimal places).
Step-by-step explanation:
I don't need a explanation I just need to know what are the two answers thankyou!
Answers
Answer:
(4.7) ⁴
(4.7)-⁴
Step-by-step explanation:
Mark brainliest please
question:
2r - 13 = -5
Answers
Answer:
r = 4
Step-by-step explanation:
2r = 13 + -5
2r = 8
r = 4
Hope that helps!
2r-13=-5
+13=+13
—————-
2r=8
/2. /2
————-
r=4
Paige's hair was originally 7 inches long. she asked her hair dresser to cut1/2 of it off. how many inches did she cut off
Answers
Answer:
3.5 inches
Step-by-step explanation:
half of 7 is 3.5
Select all expressions that are equivalent to 16x-12-24x+4.
pls help ASAP!
Answers
16x - 24 x = -8x
-12 + 4 = 8
12/7 ÷ 12/7 = ??????????
Answers
Answer:
1
Step-by-step explanation:
Anything divided by itself is always 1.
Answer:
the answer is 1
Step-by-step explanation:
route bought a bicycle for 1200 she later sold it for 800 what was her loss
Answers
Answer:
-400
Step-by-step explanation:
Answer:
Her loss was 400
Step-by-step explanation:
CP= 1200
SP= 800
L=?
Now,
L= CP - SP
= 1200 - 800
=400
YALL I NEED HELP ASAP !
Answers
Answer:
the answer would be 50 rounded to the nearest ten
Step-by-step explanation:
so sorry if this is not correct °3°
okay thanks for reading :P
1. Carla has some stickers. Kezia had 4 times as many as Carla but gave 5 to her sister and now she had 7. How many stickers does Carla have?
Answers
Answer:
2
Step-by-step explanation:
hope it helps god blessss
3
7+5=12
add 5 that she gave to her sister and divide it by 4 since she had 4x more than Carla
3c=6 and after you have to do subtraction to check
Answers
Answer:
c=2
Step-by-step explanation:
Given function:
3c=6divide 6 by 3 to find c.
6÷3=2subtract to check:
6-3=3since there are 2 threes, c=2.Therefore, c=2.
Exact distance between (-1,-9) and (5,-5)
Answers
[tex]2 \sqrt{13} [/tex]
that is your answer
Perchlorate is a chemical used in rocket fuel. People who live near a former rocket-testing site are concerned that perchlorate is present in unsafe amounts in their drinking water. Drinking water is considered safe when the average level of perchlorate is 24.5 parts per billion (ppb) or less. A random sample of 28 water sources in this area produces a mean perchlorate measure of 25.3 ppb. Which of the following is an appropriate alternative hypothesis that addresses their concern? Ha : μ < 25.3 H, a, : , μ, < 25.3 A Ha : μ > 25.3 H, a, : , μ, > 25.3 B Ha : μ < 24.5 H, a, : , μ, < 24.5 C Ha : μ > 24.5 H, a , : , μ, > 24.5 D Ha : μ ≠ 24.5
Answers
Answer:
[tex]H_a > \mu = 24.5[/tex]
Step-by-step explanation:
Given
[tex]n = 28[/tex] --- sample size
[tex]\bar x = 25.3[/tex] --- Mean
[tex]x = 24.5[/tex] --- Average
Required
Determine the alternate hypothesis
From the question, we understand that it is safe to drink water at 24.5 ppb or less.
This implies that the null hypothesis is:
[tex]H_0 \le \mu = \bar x[/tex]
i.e.
[tex]H_0 \le \mu = 24.5[/tex]
The opposite of [tex]\le[/tex] is [tex]>[/tex]
So, the alternate hypothesis will be:
[tex]H_a > \mu = \bar x[/tex]
[tex]H_a > \mu = 24.5[/tex]
Hence: (c) is correct
Jason delivered pizzas to a house in Southaven. The pizzas cost the customer $18.25. They tipped Jason $3.65. At what percent did they tip Jason? (HOW DID YOU GET YOUR ANSWER PLEASE SHOW ME YOUR WORK!!)
A. 16.6%
B. 50%
C. 20%
D. 5.6FT
E. $29.40
F. $30.40
G. 6.3FT
H. 25%
Answers
Answer:
$3.65/$18.25
Step-by-step explanation:
$3.65/$18.25
=0.2=2%
This is the correct answer
i have to do a number graph using fractions I dont know how
Answers
Answer:
What kind of graph?
how do I get from 0 to negative 2
Answers
Answer:
Step-by-step explanation:
Are you referring to the number line? Start at “0” and go left to “-2”
Jack can text 210 characters in 21 minutes. Write an expression for m minutes.
a. 10m
b. 210m
c. 21m
d. 12m
Answers
In the measurement of the length of a cylinder, the main scale reading of a vernier caliper is 2.8 cm, the vernier reading is 4, and the least count of the vernier is 0.01 cm. Find the reading of the length of the cylinder.
Answers
Answer:
the reading of the length of the cylinder is 2.84 cm
Step-by-step explanation:
Given the data in the question;
the main scale reading = 2.8 cm
the Vernier reading = 4
the least count of the Vernier = 0.01 cm
the reading of the length of the cylinder = ?
To determine the reading of the length of the cylinder, we simply say;
Reading length = main scale reading + ( Vernier reading × least count )
so we substitute in our given values
Reading length = 2.8 cm + ( 4 × 0.01 cm )
Reading length = 2.8 cm + 0.04 cm
Reading length = 2.84 cm
Therefore, the reading of the length of the cylinder is 2.84 cm
Select the correct answer from each drop-down menu.
Gilbert is training for a bike race. As part of his training, he does practice rides on portions of
and his second practice ride covers 9 miles of the course. Between these practice rides, he in
These functions model the time it took Gilbert to do each practice ride, where x is his speed
Practice Ride 1
Practice Ride 2
9
+ 2
The denominator of the function that models practice ride 2 represents the
To find a function that models the total amount of time Gilbert spent doing practice rides on
Reset
N
Answers
Answer:
I need help on this as well
Answer:
1.biking speed for the second practice ride
2.add
Step-by-step explanation:
This is right for plato bc i got it right:)
Select all equations for which -3 is a solution.
2x3 = -27
0 -2 =9
O ? = 9
O 3 = 27
O x2 = -9
O (-2)2 = 9
Answers
Answer:
look it up
Step-by-step explanation:
What is the angle Between two parallel lines? Hmm?ಠ_ಠ
Answers
Answer:
the angle between parallel lines is undefined, or it can be either 0 or 180 degrees, or any multiple of 180 degrees.
Answer:
the angle between two parallel lines are supplementary (180 degrees) if intersected by a transversal..
Answer this ASAP it’s due tomorrow again
Answers
Answer:
76 cm cubed
Step-by-step explanation:
2 x 2 x 4 = 16 cm cubed
3 x 4 x 5 = 60 cm cubed
Write and equivalent expression for the following expression: ab
Answers
Answer:
ab = a(b)
Step-by-step explanation:
cuz u can just add parentheses
The line perpendicular to y= (-3/2)x -4 and goes through (1,4)
Answers
Answer (assuming it is allowed to be in point-slope format):
[tex]y-4 = \frac{2}{3}(x-1)[/tex]
Step-by-step explanation:
1) First, determine the slope. We know it has to be perpendicular to the given equation, [tex]y = -\frac{3}{2} x-4[/tex]. That equation is already in slope-intercept form, or y = mx + b format, in which m represents the slope. Since [tex]-\frac{3}{2}[/tex] is in place of the m in the equation, that must be the slope of the given line.
Slopes that are perpendicular are opposite reciprocals of each other (they have different signs, and the denominators and numerators switch places). Thus, the slope of the new line must be [tex]\frac{2}{3}[/tex].
2) Now, use the point-slope formula, [tex]y-y_1 = m (x-x_1)[/tex] to write the new equation with the given information. Substitute [tex]m[/tex], [tex]x_1[/tex], and [tex]y_1[/tex] for real values.
The [tex]m[/tex] represents the slope, so substitute [tex]\frac{2}{3}[/tex] in its place. The [tex]x_1[/tex] and [tex]y_1[/tex] represent the x and y values of a point the line intersects. Since the point crosses (1,4), substitute 1 for [tex]x_1[/tex] and 4 for [tex]y_1[/tex]. This gives the following equation and answer:
[tex]y-4 = \frac{2}{3}(x-1)[/tex]
A line has a gradient of -2
A line that is parallel to this will have a gradient of ...
Answers
Given:
A line has a gradient of -2
A line that is parallel to this will have a gradient of ..... .
To find:
The missing value.
Solution:
Gradient of a line is also known as slope of the line.
We know that the slopes of the parallel lines are equal.
A line has a gradient of -2. So, the slopes of all the lines which are parallel to this line have a gradient of -2.
Therefore, the missing value is -2.
What is the equation of a line that passes through (0, 6) and (6, 0)?
a.y = -x
b.y = x - 6
c.y = x + 6
d.y = -x + 6
PLZ HELP IN A TEST
Answers
oh YEAH RIGHT THERE OOOOOHHHH
I need help if the awnser is right I will mark you
Answers
Answer:
C. 344 square centimeters
Please I need this question ASAP
Answers
Now, multiply 0.13 by all of these into a calculator.
1800 • 0.13 = 234
950 • 0.13 = 123.50
2200 • 0.13 = 286
3000 • 0.13 = 390
2600 • 0.13 = 338
