What is the rate of change of the linear equation 3.9x + y = 15.21?

A. -15.21
B. -3.9
C. 3.9
D.15.21​

Answers

Answer 1
C because it is the value of M (slope)

Related Questions

need help on this pleaseeee!! as soon as possible!!!

Answers

5 units left and two units down

Help please I need help on this problem,appreciate it :)

Rewrite (squareroot n^5 p^8)
as an exponential expression

Answers

Answer:

the answer is the option : D

Need help with question 2
Solve the system of linear equations by graphing. Check your answer.



Pls anser thisss plesseee

Answers

Answer:

duh

Step-by-step explanation:

bc it’s not

Get x by its self first by subtracting the 2y and the -4

What is the value of the expression (0.4)​2​

Answers

If you meant multiple it’s 0.8 but if you meant to the power of 2 it’s 0.16

Pls help and show workings due ASAP

Answers

Answer:

A

Step-by-step explanation:

By triangle inequality,

L < 15+6

15 < L+6

6 < L+15

Solving these, we get 9 < L < 21.

Only 10 falls within the range.

The answer is therefore 10cm i.e. A.

URGENT PLEASE HELP!
Explain the steps you would take to graph 2x-3y>15.

Answers

Answer:

y>5−2x/3

Step-by-step explanation:

HELP ME ILL GIVE Yu 30 POINTS

Answers

Step-by-step explanation:

[tex]\tt{ 7+3×6-9 }[/tex]

[tex]\tt{ 7+18-9 }[/tex]

[tex]\tt{ 25-9 }[/tex]

[tex]\tt{16 }[/tex]

Answer:

[tex]7 + 3 \times 6 - 9 \\ = 7 + 18 - 9 \\ = 25 - 9 \\ = 16[/tex]

16 is the right answer.

2y-3k when y=8 and k=6

Answers

Answer:

-2

Step-by-step explanation:

2(8) - 3(6)

16 -18 = -2

Answer:

-2

Step-by-step explanation:

If y = 8, then 2y = 8 times two, so 2y = 16

If k = 6 then 3k = 6 times 3, so 3k = 18

16 - 18 = -2

Hope this helps :)

what is the solution to the system of equations?
A. (-7, -6)
B. (-6, -7)
C. (0, 2)
D. (2, -5)

Answers

Answer: B.

Step-by-step explanation:

Jimmy is eating appetizers that have 120 calories each. He only plans to eat 550 calories overall.
Write an inequality and determine the most appetizers he can eat without exceeding the limit.

Answers

Answer:

4

Step-by-step explanation:

Jimmy is eating appetizers that

have 120 calories each. He only

plans to eat 550 calories overall.

Write an inequality and determine

the most appetizers he can eat

without exceeding the limit.

He can eat 4.

a motorboat takes 5 hours to travel 150 Miles going Upstream. the return trip takes 3 hours going Downstream .what is the rate of the boat in still water and what is the rate of the current ?​

Answers

Answer:

Speed of boat in still water = 40 mph

Rate of current = 10 mph

Step-by-step explanation:

Let the speed of boat in still water be x & let the speed of the stream be y.

Total Distance = 150 miles

Time taken to travel during upstream = 5 hrs

Speed of the boat during upstream = [tex]\frac{150}{5} = 30\:mph[/tex]

Speed of boat during upstream can be represented as [tex]x - y = 30[/tex] because the boat is moving in the opposite direction of flow of stream.

Time taken to travel during downstream = 3 hrs

Speed of boat during downstream = [tex]\frac{150}{3} = 50\:mph[/tex]

Speed of boat during downstream can be represented as [tex]x+y=50[/tex] because the boat is moving in the same direction of flow of stream.

We got a pair of linear eqns. Let  [tex]x-y=30[/tex] be eqn.1 and [tex]x+y=50[/tex] be eqn.2 . Using substitution method ,

From eqn.1 , [tex]x-y=30[/tex]

[tex]=> x = y + 30[/tex]

Putting 'x' in eqn.2 , [tex]x + y = 50[/tex]

[tex]=> y + 30 + y = 50[/tex]

[tex]=> y + y = 50-30[/tex]

[tex]=> 2y = 20[/tex]

[tex]=> y = \frac{20}{2} = 10\: mph[/tex]

Putting y in eqn.1 ,

[tex]x - 10 = 30[/tex]

[tex]=> x = 30 + 10 = 40 \:mph[/tex]

Hence , the speed of boat in still water is 40 mph and speed of stream is 10 mph

Type the correct answer in the box. Use numerals instead of wc
The length of each side of a square increases by 2.5 inches to
original square was
inches.
Question serial: FIB-3A42-E542-4CD6
P

Answers

Answer:

me dont know solve it your self HAHAHHH loser

Step-by-step explanation:

2. You and 5 friends went out to eat at Little Italy.
The bill was split equally and each person paid
$13.26. Write and solve an equation to find the
amount of the total bill.

Answers

Answer:

13.26 * 6 =79.56

Step-by-step explanation:

The answer is 79.56$ total bill
There are 6 people and each paid 13.26 and 13.26x6=79.56

Meryl needs to cut down 10.5 trees for every 5 cabins she builds.

Complete the table using equivalent ratios.

Number of trees Number of cabins

10.5 5
__ 3
__ 7

Answers

Answer:

for seven cabins it should be 14.7 trees, im not sure about 3 cabins, sorry :(

Answer:

3) 6.3

7) 14.7

Step-by-step explanation:

Use ratios to solve the table

10.5/5 = x/3

cross multiply

31.5 = 5x

x = 6.3

10.5/5 = x/7

73.5 = 5x

x = 14.7

y=(1/3)•(16)x
a.Exponential growth
b.Exponential Decay

Answers

Answer:

the answer should be A for this question

please help!!! ill give brainliest

Answers

Answer:

Step-by-step explanation:

divide the number then add on

You can solve this using the Quadratic Formula, x =.

a = 1, b = -12, c = 59

x =    Multiply 4 and 1

x =    Multiply 2 and 1

x =    Multiply -4 and 59

x =    Square 12

x =    Subtract

x =    You can't find the square root of negatives, so factor the -92 out.

x =    You can find the square of 4, so take that out.

x =    Split the expression into two parts

x =  (+ or -)    The 2 in the numerator and the 2 in the denominator cancel each other out

x =  (+ or -)    Divide 12 by 2

x = 6 (+ or -)    Now, split the solution into the plus and minus parts.

In the diagram below, line RCBT and △ABC are shown with m∠A = 60 and m∠ABT = 125. What is the m∠ACR?


1.125°
2.115°
3.65°
4.55°

Answers

Answer:

3.) 65

Step-by-step explanation:

180-125=55

55+60= 115

a triangle equals 180

180-115=65

The sum of all the angles in a triangle is 180 degrees.

The value of the m∠ACR is 65°.

Option 3 is the correct answer.

What is the sum of angles in a triangle?

The sum of all the angles in a triangle is 180 degrees.

We have,

Line RCBT and ΔABC.

From the diagram, we see that,

In ΔABC,

m∠A + m∠B + m∠C = 180 ___(1)

m∠CBT = 180

m∠CBA + m∠ABT = 180

m∠CBA + 125 = 180

m∠CBA = 180 - 125

m∠CBA = m∠B = 55 ____(2)

m∠BCR = 180

m∠BCA + m∠ACR = 180 ____(3)

From (1) and (2) we get,

m∠A + m∠B + m∠C = 180

60 + 155 + m∠C = 180

m∠C = 180 - 60 - 55

m∠C = 65 ____(4)

From (4) we get,

m∠ACR = 65

Thus,

The value of the m∠ACR is 65°.

Option 3 is the correct answer.

Learn more about angles here:

https://brainly.com/question/28793979

#SPJ2

A ladder is 59 inches tall. How tall is it in feet and inches?

Answers

4 Feet and about 9 inches

Answer:

4 feet 11 inches

Step-by-step explanation:

all you need to do is see how many groups of 12 is in 59

its 4 because 5 times 12 is 60

12 times 4 is 48

59-48= 11

4 feet 11 inches

Brainliest would be appreciated!

what percent of 56.25$ is 11.25$

Answers

Answer:

3%percent of $375 is $11.25 and 20% of $56.25 is $11.25 .

Step-by-step explanation:

. FOIL the following expression
(x – 4) (x + 6)

Answers

x^2+2x-24 is the correct answer

Please help me I need it!!!!

Answers

Answer:

d

Step-by-step explanation:

because it starts off under the water which is -24 then you add a positive 24 to get to sea level

Answer:

the distance above sea level after increasing  24 meters from a depth of 24 meters below sea level

Step-by-step explanation:

equation- -24m + 24m = 0

the answer to the first one is -10 (-5 - 5 - -10)

the answer to the second one is 1,000 (0 + 1,000 = 1,000)

the answer to the third one is 10 ( 20 - 10 = 10)

the answer to the fourth one is 0 (-24 + 24 = 0)

solve for x 8/x +1/5 = 3/x

Answers

Answer:

I think x=-25

Step-by-step explanation:

Randy owns 120 baseball cards, and Phil owns 95 baseball cards. The number of baseball cards Davis owns is equal to 5 times the difference between Randy's number of cards and Phil's. How many cards does Davis own?

A. 25 cards
B. 30 cards
C. 125 cards
D. 150 cards

Answers

Answer:

125

Step-by-step explanation:

First you want to find out the difference between Randy and Phil:

120 - 95 = 25

Then, multiply that by five:

25 × 5 = 125

Hope this helps

Answer:

Davis owns 125 cards

Step-by-step explanation:

120 - 90 =  25 x 5 = 125

There are 18 chocolates in Swee Tuth's box, 2 each of 9 flavours.
She likes only 6 of the flavours. If she picks a chocolate at randon
what is the probability of her getting one she doesn't like?

Answers

Answer:

20% because if there's six different chocolates she likes and if she picks random thers a possibility of it

I need help I’m failing

Answers

Answer:

D

Divide both by 3

Step-by-step explanation:

The answer is d hope that helps

if you have 1 ball and it takes 8 balls to move that 1 ball. How many balls will it taked to rotate back to the first ball?​

Answers

Answer:

Step-by-step explanation: why do u need 8 balls to move 1 lolwut

B(3x -4) A(9x + 17) C(6x -31) solve for all angles

Answers

Answer:

11

Step-by-step explanation:

Don't worry I just know

the point 2,1 is the turning point of the graph with the equation y=x^2+ax+b

Answers

Answer:

14‏/12‏/2019 — However, we know that the line passes through two known points with x and y coordinates. ... The equation of a curve is y = x^2 + ax + b where a and b are integers. ... x2 (or second order polynomial) graphs are symmetrical about their turning point ... Therefore, we know that the line intercepts the x-axis at (-1,0) and (5,0).

Step-by-step explanation:

Answer:

a = -4, b = 3

Step-by-step explanation:

sorry, im a bit late but hoping to help others that need the answer.

when you complete the square for a quadratic, you r answer can come in the form (x+p)^2+q.

in this form, p is the opposite of the x coordinate.

and q is the same as the y coordinate.

to get p and q from this, we find the opposite of the x coordinate and use the y coordinate we are given, and plug them into this equation.

we get: (x-2)^2+1

lets complete the equation now.

(x-2)^2 = x^2 - 4x + 4, then add the one we left out = x^2 - 4x + 5.

now our equation is in the same format as y=x^2+ax+b so we can just pull out the A and B which gives us:

A = -4

B = 5

if i am wrong please feel free to correct me, ty.

Which inequality is graphed on the coordinate plane?

Answers

Answer:

B

Step-by-step explanation:

The slope is 4/1 which equals 4

the y int is 2

this gives us 4x+2

the line is dotted which mean there is no equal sign with the inequality

The shaded area is above the line, meaning y is greater

3 x + 2 y=8
solve for y

Answers

Answer:

y=4-3x/2

Step-by-step explanation:

move 3x to the other side by subtracting 3x on both sides

2y=8-3x

divide by 2 on both sides:

y=4-3x/2

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