Step-by-step explanation:
21 seconds = -294 meters
=> 1 second = -294/21 = -14 meters
Hence the average change is -14 meters per second.
The average change in the submarines depth is -14 meters per second.
What is arithmetic?Arithmetic is the branch of mathematics that deals with the study of numbers using various operations on them. Basic operations of math are addition, subtraction, multiplication and division. These operations are denoted by the given symbols.
Given:
A submarine was at the surface of the water.
21 seconds later, it was at a depth of 294 meters.
We have to find the average change in the submarines depth each second.
According to given question we have
21 seconds = -294 meters
=> 1 second = -294/21 = -14 meters
Hence ,the average change in the submarines depth is -14 meters per second.
Learn more details about arithmetic here:
https://brainly.com/question/11559160
#SPJ2
How far a car goes in 30 seconds at speed of 29m/s
Answer:
i think it goes 870m/s
Step-by-step explanation:
30x29=870
LALLY MANLLITYONLILULIVE
1)
Which expression is equivalent to (5x + 3) + (4x + 7)?
A)
9x + 21
B)
9x + 10
C)
10x + 9
D)
20x + 21
Is 15/3=y7 a true proportion
Answer:
The proportion is true.
We are given the following proportion and we are to determine whether it is a true proportion or not:
Finding the value of y:
So now we have
Checking if it is a true proportion:
Since the simplified fractions are equivalent, therefore the proportion is true.
Step-by-step explanation:
How do I figure out -3√12-2√27-2√45
Answer:
−12√3−6√5 or Decimal: -34.201018
Step-by-step explanation:
-3√12-2√27-2√45
3√12=6√3
2√27=6√3
2√45=6√5
=6√3-6√3-6√5
=−12√3−6√5
By what percent will the product of two numbers if one of them is increased by 30% and the other is decreased by 30%
Answer:
I would need the number that is being increased by 30% to get the answer.
Step-by-step explanation:
Sorry
Michael bought two tickets to a zoo. After she bought the tickets her account balance for a change of -$33.04 what would’ve been the change to her account balance had she only bought one ticket to the zoo?
A.-16.52
B.16.52
C.16.50
D.-16.50
Can someone give methe correct answer with work please, need help. I will give brainlist!!!!
Answer:
Option B is the correct answer
Step-by-step explanation:
Option B is the correct answer
[tex] \Sigma_{k=0}^\infty\frac{3}{k(k+2)}[/tex]
ANSWER ASAP!!!!!!!!!!!!!!!
2-2x=?
What is the common ratio of the geometric sequence 16, 24, 36, 54, ...?
2/3
1
8
3/2
Answer:
r = 3/2
Step-by-step explanation:
The common ratio (r) is the number that, when multiplied by the previous (n-1) term, gives the nth term of the geometric sequence ([tex]a_{n} =a_{n-1}*r[/tex]). To find the common ratio, we can take any term and divide it by its preceding term (rearrange the formula to get [tex]r=\frac{a_{n}}{a_{n-1}}[/tex]). If we take 24 and divide it by 16, we get the common ratio of 3/2 ([tex]r=\frac{24}{16}[/tex], [tex]r=\frac{3}{2}[/tex]). Hope this helps.
Kyle types college reports for $2.05 per page. He also charges $6 to cover the cost of supplies
A. Write and expression for total earnings for typing p pages.
B. Evaluate the expression for a 25-page report.
The area of a rectangle is 55m ^ 2 , and the length of the rectangle is 4 m less than three times the width . Find the dimensions of the rectangle.
Answer:
Length: 11m
width: 5m
Step-by-step explanation:
Please help hurry please. also show how you get the answer.
Answer:
Answer is D
Step-by-step explanation:
-4(9x-2)+3=-36x+8+3=-36x+11
2/3 times 3/4
What is the answer?
Answer:
6/12 simplified: 1/2
Step-by-step explanation:
You just multiply the numerator by the numerator and the denominator by the denominator... 2x3 and 3x4
Hope you understand... if you have any questions just message in the box : D
Answer:
the answer is 0.5. does that help at all? :D
Discounts and what is the outcome
Answer:
with discount+tax= $23.15
Step-by-step explanation:
board game is 25
discount: 15%
tax: 7.5%
discount means you take off that amount
tax means you add that amount
discount: 15% off
tax: +7.5%
to find 15% of 25 multiply 25 by 15% (15/100=0.15)
25*0.15
= 3.75
then subtract that from 25
25-3.75
=21.25
tax:
0.075*25
=1.875
~1.9
21.25+1.9
=23.15
The length of two sides of a right triangle are 5 inches and 8 inches. What is the difference between the two possible lengths of the third side of the triangle
Answer:
if im not mistaken it is 10
Step-by-step explanation:
Please help I'm not the brightest.
Triangle ABC is a right triangle.
B
What is the length of AC?
20
Ο Ο Ο Ο
21
40
58
f(x)=-x^2-10 Find f(-4)
Answer:
We conclude that:
f(-4) = -26Step-by-step explanation:
Given
We have the function
f(x) = -x² - 10
To determine
f(-4) = ?
Calclulating f(-4)
substitute x = -4 in the function
f(x) = -x² - 10
f(-4) = -(4)² - 10
f(-4) = -16 - 10
f(-4) = -26
Therefore, we conclude that:
f(-4) = -26A line is graphed below.
Write an equation in the form y = mx + b that represents this line
Answer:
y= -2x+ 3
Step-by-step explanation:
250 people were asked to name their favorite fruit. Of those surveyed, how many people prefer peaches? 44% berries, 32% Peaches, 24% Cherries
Answer:
80 people prefered peaches
Step-by-step explanation:
250-68%=80 people
Translate the sentence into an equation. Twice the difference of a number and 8 is 9. Use the variable w for the unknown number.
Answer:
[tex]2(w-8)=9[/tex]
Step-by-step explanation:
N/A
A soccer team made $575.75 from selling popcorn at a concession stand during a tournament. The popcorn cost the
team $65.00. What is the amount of money earned for each player if the profit is divided equally among the 15 players?
Round to the nearest cent.
$34.05
$42.72
$7,661.25
$9,611.25
Answer:
34.05
Step-by-step explanation:
Subtract 65 from 575.75 and then divide that number by 15
State if the two triangles are congruent. If they are, state how you know.
Answer:
1) Not Congruent
2) Congruent
3) Congruent
4) Congruent
5) Not Congruent
6) Congruent
(I tried my best, hope this helps. Good luck hun)
Step-by-step explanation:
When two triangles are congruent they will have exactly the same three sides and exactly the same three angles. The equal sides and angles may not be in the same position (if there is a turn or a flip), but they are there.
If two angles and the included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.
Factor 5x2 – 17x – 12
Answer:
214.......................
Identify the property demonstrated.
4(3+5) = 4.3 +4.5
-associative property of
multiplication
-commutative property of multiplication
-distributive property
-identity property of multiplication
Answer:
Distributive property
Step-by-step explanation:
Each algorithm is applied to a group of 52 sample problems. The new algorithm completes the sample problems with a mean time of 24.04 hours. The current algorithm completes the sample problems with a mean time of 24.52 hours. The standard deviation is found to be 5.769 hours for the new algorithm, and 5.556 hours for the current algorithm. Conduct a hypothesis test at the 0.05 level of significance of the claim that the new algorithm has a lower mean completion time than the current algorithm.
Answer:
Therefore we fail to reject the Null hypothesis [tex]H_0[/tex]
Because the is no sufficient evidence to support the claim of the alternative hypothesis [tex]H_a[/tex]
Step-by-step explanation:
From the question we are told that
Sample size [tex]n_1 =52[/tex]
Mean time 1 [tex]\=x_1=24.04\ hours[/tex]
Mean time 2 [tex]\=x_2=24.52\ hours[/tex]
Standard deviation [tex]\partial _1=5.769[/tex]
Standard deviation [tex]\partial _2=5.556[/tex]
Level of significance 0.05
The null hypothesis is [tex]H_o: \mu_1=\mu_2[/tex]
Alternative hypothesis [tex]H_a: \mu_1<\mu_2[/tex]
Generally the test statistics is mathematically represented as
[tex]Z= \frac{\=x_1-\=x_2}{\sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}}[/tex]
[tex]Z= \frac{24.04-24.52}{\sqrt{\frac{5.769^2}{52}+\frac{5.5562^2}{52}}}[/tex]
[tex]Z= -0.4321583379[/tex]
[tex]Z= -0.43[/tex]
From Table the Z-critical value at [tex]\alpha =0.05\ is\ -1.6449[/tex]
Therefore
Zcal> Zcritical
(-0.43)=(-1.645)
Generally we fail to reject the null hypothesis [tex]H_0[/tex] at [tex]\alpha = 0.05[/tex]
Therefore we fail to reject the[tex]H_0[/tex]
Because the is no sufficient evidence to support the claim of [tex]H_a[/tex]
what is -15/16÷7/12= k
Solve for k
by simplifying both sides of the equation, then isolating the variable.
Exact Form:
k= −45/28
Decimal Form:
k=−1.60714285…
Mixed Number Form:
k= −1 17/28
so its the top one :)
how do you simplify this using the laws of exponents?
Answer:
x1 = x 61 = 6
x0 = 1 70 = 1
x-1 = 1/x 4-1 = 1/4
xmxn = xm+n x2x3 = x2+3 = x5
xm/xn = xm-n x6/x2 = x6-2 = x4
(xm)n = xmn (x2)3 = x2×3 = x6
(xy)n = xnyn (xy)3 = x3y3
(x/y)n = xn/yn (x/y)2 = x2 / y2
x-n = 1/xn x-3 = 1/x3
Step-by-step explanation:
i hope this helps if its wrong just delete my answer
The ratio of Boy students to Girl
students is 8:9. There's 270
student Girls. How many Boys
are there?
Answer:
240 boys
Step-by-step explanation:
boys/girls = 8/9 = boys/270
so just multiply
boys= 8/9 x 270 = 240
Answer:
240
Step-by-step explanation:
270 * 8/9 = 240
so 240:270 is equivalent to 8:9
solve pls? 4-7.
Explain or show your reasoning:
Answer:
its -3
Step-by-step explanation:
Answer:
4 - 7 = - 3 because if you use the number line and start at 4 and go back 7 times you'll get -3 (not the best explanation sorry)
