Please help me with this equation. It’s solving systems of equations.

Please Help Me With This Equation. Its Solving Systems Of Equations.

Answers

Answer 1

Moving downstream (with the current), the boat moves at a rate of (252 mi)/(12 h) = 21 mph. Upstream (against the current), it moves at a rate of (252 mi)/(84 h) = 3 mph.

When traveling downstream, the boat's speed is the sum of its own speed in still water and the speed of the current. It's the same going upstream, but the boat and current move in opposite directions. Let b and c denote these speeds, respectively. Then

downstream: b + c = 21 mph

upstream:      b - c = 3 mph

Adding these equations eliminates c and lets us solve for b :

(b + c) + (b - c) = 21 mph + 3 mph

2b = 24 mph

b = 12 mph

Now solve for c :

12 mph + c = 21 mph

c = 9 mph


Related Questions

What is 55 divided by 1 1/2

Answers

Answer:

55 divided by 11/2 is 10

Number equivalent to 55/1 1/2 is 36.66 .

Given,

55 divided 1 1/2

Using division property,

The rules for division are:

(1) positive × or ÷ positive = positive

(2) positive × or ÷ negative = negative

(3) negative × or ÷ negative = positive

Rule for long division method,

Divide the tens column dividend by the divisor.

Multiply the divisor by the quotient in the tens place column.

Subtract the product from the divisor.

Bring down the dividend in the ones column and repeat.

Therefore,

divide, multiply, subtract, bring down and repeat or find the remainder.

Here the required value is of :

15/1 1/2

= 36.66

Hence the answer is 36.66

Know more about division,

https://brainly.com/question/10703980

#SPJ6

How do similarities and dilations relate to slope

Answers

Answer:

Dilations create similar figures because multiplying by the scale factor creates proportional sides while leaving the angle measure and the shape the same.

Step-by-step explanation:

You work in a hospital,and instructions for an instrument state that it should be cleaned in the sterilizer for two hours. The sterilizer requires cleaning time be entered in minutes. How many minutes do you set for the sterilizer?

Answers

Answer:

120

Step-by-step explanation:

Due to an hour equaling 60 minutes, two hours would equal 120.

Help!!! what is -6+x+4=-5

Answers

Answer:

x = -3 (yes that's negative 3)

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable.

Answer:

[tex] \sf \: x = - 3[/tex]

Step-by-step explanation:

Now we have to,

→ Find the required value of x.

The equation is,

→ -6 + x + 4 = -5

Then the value of x will be,

→ -6 + x + 4 = -5

→ x + (-6 + 4) = -5

→ x + (-2) = -5

→ x - 2 = -5

→ x = -5 + 2

→ [ x = -3 ]

Hence, the value of x is -3.

Helps me solve this problem please

Answers

Answer:B.

Step-by-step explanation: PLEASE GIVE BRAINLIEST IT HELPS ALOT

The answer is b because i looked it up.

How much money is shown?

Answers

Answer:

90 cents

Step-by-step explanation:

The order goes nickel, dime, quarter, quarter, quarter

Answer:

$0.90

Step-by-step explanation:

This is the answer because:

1) Penny = 0.01, Nickel = 0.05, Dime = 0.10, Quarter = 0.25

2) We have one nickel, one dime, and three quarters.

0.05 + 0.10 + 0.25 + 0.25 + 0.25 = 0.90

Therefore, the answer is 0.90

Hope this helps! :D

Round to the nearest integer 31.4829

Answers

9514 1404 393

Answer:

  31

Step-by-step explanation:

The fractional part of the given number is 0.4829, which is less than 0.5. That means the nearest integer is the integer below the given number:

  31

If you want to graph the relationship to compare the unit prices, what should the x- axis and the y-axis represent

Answers

Answer:

it represents the following

read in my explanation

Step-by-step explanation:

A bar chart is a graph with rectangular bars. The graph usually compares different categories. Although the graphs can be plotted vertically (bars standing up) or horizontally (bars laying flat from left to right), the most usual type of bar graph is vertical.

The horizontal (x) axis represents the categories; The vertical (y) axis represents a value for those categories. In the graph below, the values are percentages.

Answer:

The unit price in this situation is the approximate cost per pound of clementines. So, the x-axis should represent the number of pounds. The y-axis should represent the cost.

Step-by-step explanation:

Plato correct answer word for word

How is 0.000000006532 expressed in standard scientific notation? please tell me i wanna pass

Answers

Answer:

6.532 x 10^-9

Step-by-step:

1. 0.000000006532

2. move the decimal to where the first number is greater than or equal to 1 and less than 10. In this case we move the decimal to the right 9 times. You will get 6.532

3. We moved the decimal to the right meaning the power to 10 would be a negative number. The number is how many times we moved the decimal by 1 spot, in this problem we moved it 9 times. 6.532 x 10^-9 is what you should get for scientific notation

Which of the following statements correctly justifies the steps in the solution below?
Given
Step 1
Step 2
Step 3
Step 4
6(3x - 4) - 26 = 40
18x - 24 - 26 = 40
18x - 50 = 40
18x = 90
x = 5
O The Associative Property is used to create Step 1.
O The Distributive Property is used to create Step 3.
o The Division Property is used to create Step 4
o The Subtraction Property is used to create Step 2.

Answers

Answer:

The Division Property is used to create Step 4

Answer:b

Step-by-step explanation:

Consider the complex number i 6.
What is the real part?

Answers

Answer:

For example, 2 + 3i is a complex number. ... The real number a is called the real part of the complex number a + bi; the real number b is called its imaginary part. To emphasize, the imaginary part does not include a factor i; that is, the imaginary part is b, not bi.

I honestly don’t know

-3 4/7 ÷ -1 1/14 it is really hard I need help.

Answers

Answer:

There are may different ways to write it...

Step-by-step explanation:

Reduce the expression, if possible, by cancelling the common factors.

Decimal would be 3.3333333333333...

Fraction: [tex]3\frac{1}{3} or\frac{10}{3}[/tex]

What is 138 rounded to the nearest hundredth

Answers

Answer:

hundred and hundredth are way different 11.75 I think it would be tho

Step-by-step explanation:

20) For every 1 kilometer increase in altitude, the
temperature drops 7°C. Find the temperature
change for a 5 kilometer altitude increase.

Answers

Answer:

35 degrees   hope this helps

Step-by-step explanation:

find the slope of the line through each pair of points (-20,-4) and (-12,-10)

Answers

Answer: -3/4x -19

Use formula y2 - y1

                      x2 - x1

Answer:

y=-3/4x-19

Step-by-step explanation:

Explain! Prize! Thank you!!!!

Answers

Answer:

b

Step-by-step explanation:

It’s (d) since the ration is 6/15 if u simplify that it will give u 2/5 I hope this helps

Seed (oz)
2
3
4
Area Covered as
es
5025
2

Answers

Answer: Not enough information provided, please provide any additional instructions, answers, and text which may have been included in the question.

Step-by-step explanation:

100 POINTS!!!!!!!!!!! ( I NEED FAST ANSWERS ) Evaluate the function, find f(-2):
f(x) = 2x2 + 3x
-2
-14
2
-10

Answers

Answer:

2

Step-by-step explanation:

[tex]f(-2)\\f(x)=2x^2+3x[/tex]

when x=-2,   y=2

Hope this helps! (✿◕‿◕✿)

what is the answer??


Answers

Answer:   x = -3 + √3     or     x = -3 - √3

Step-by-step explanation:

X²+6x+6

now breaking 6x into 2x and 3x we get ,

X²+3x+2x+6

taking x common and 2 common we get ,

x(x+3)+2(x+3)

taking (x+3) common

(x+3) (x+2)

so comparing with zero to get values of x ,

either

x+3=0

x=-3

or x+2=0

x=-2

Please I need help I'm bad at math!

Terri is rewriting 7^13 in expanded form. How many factors should she use in her expression?​

Answers

Answer:

13

Step-by-step explanation:

7^13 is 7x7x7x7x7x7x7x7x7x7x7x7x7 (which equals 96,889,010,407) so she should use 13 terms.

I think the answer would be 13:)

Which of the following square roots would not be between 7 and 8
A 50
B V 62
V45
D) V53

Answers

Answer:

C, √45

Step-by-step explanation:

First, we can use process of elimination to get rid of A and D, since we know we're looking for a range, and only the highest or the lowest number is going to be outside of that range.

Now we simply have to run the remaining answers through our calculators.  √62 is 7.87 and √45 is 6.71.  Since 7.87 is between 7 and 8 and 6.71 is not, C must be our answer.

Answer:

C

Step-by-step explanation: When you square something you multiply it by itself, and 7*7 is 49. 45 is lower than 49, so it would be impossible.

simplify - 18 = 5x + 2

Answers

Answer:

x= - 4

Step-by-step explanation:

can u mark me brainliest

Answer:

x=-4

Step-by-step explanation:

Subtract two from both sides and divide by 5 to find x.

-20=5x

x=-4

Please help me with these 4 questions

Answers

Answer:

hmm..

Step-by-step explanation:

GIVING BRAINLIST PLSSSSSSSSSSSSSSSS

Which expression is equivalent to the given expression?

​4(a−3)​

​ −8a ​
​4a−12​
4a−3
−4(a+3)

Answers

Answer: 4a-12

Step-by-step explanation: Distribute 4 to a and -3

i need help please. ​

Answers

Answer:

D.200.9 FT

Step-by-step explanation:

SHADOW: 46 = 110

Building:   /84.  /x

110*84=9240

9240/46= 200.86

rounded: 200.9

I do my math different, so sorry if it's confusing

Answer: 200.9

Step-by-step explanation: Im not 100 sure I just divided 200.9/110 like 84/46

A drill is used to dig down into the earth. After 2 hours, the drill is 12 meters below the surface. After 5 hours, the drill is 30 meters below the surface. Which equation represents the depth of the drill in meters, y, after ​x hours of drilling?

Answers

no idea to that answer sorry

8.25% sales tax on a $233
I need help???

Answers

Answer:

233-19.2225=213.7775

Step-by-step explanation:

Answer:

8.25% of $233 should be $28.24 bringing the total to $261.24

Find the measure of the angle indicated in bold type

Answers

Answer:

70

Step-by-step explanation:

They are corresponding angles, meaning they are equal in measure.

8x+6=-2+9x

-x=-8

x=8

Plug it in:

-2+9(8)

=70

70 ... hope that helps u out :)

please can you help me

Answers

Answer:

a) 36

b) 2

c) 2

Step-by-step explanation:

can u plz tell me what is 22=-11n

Answers

Answer:

n=-2

Step-by-step explanation:

22=-11n

u divide it and u get

n=-2

and ofc u keep the negative because ur dividing

Answer:

If you are asking for the value of n, then n= -2

Step-by-step explanation:

22 = -11n

22/-11 = -11n/-11

-2 = n

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