A boat traveled 336 miles downstream and back. The trip downstream took 12 hours. The trip back took 14 hours. What is the speed of the boat in still water? What is the speed of the current?

Answer:

x = -5

Step-by-step explanation:

8x+32=1/5(25x−15)−4x

8x + 32 = 5x - 3 - 4x

8x + 32 = x - 3

7x = -35

x = -5

Answer:

x = -5

Step-by-step explanation:

Let's expand the parentheses on the right side first:

(1/5) * (25x - 15) = (1/5) * 25x - (1/5) * 15 = 5x - 3

Now put this back in:

8x + 32 = 5x - 3 - 4x

Move all the x terms to one side and all the constants to one side:

8x - 5x + 4x = -3 - 32

Combine like terms:

7x = -35

Divide both sides by 7:

x = -35/7 = -5

Thus, the answer is -5.

Hope this helps!

Answer:

5/26

Step-by-step explanation:

red / all = 10 / (15+5+10+12 +10)

=10 / 52

=5/26

Probability of choosing a red candy is 5 / 26

Given that:

Number of brown candy = 15

Number of blue candy = 10

Number of red candy = 10

Number of green candy = 5

Number of yellow candy = 12

Find:

Probability of choosing a red candy

Computation:

Total number of candies = 15+5+10+12+10

Total number of candies = 52

Probability of choosing a red candy = Number of red candy / Total number of candies

Probability of choosing a red candy = 10 / 52

Probability of choosing a red candy = 5 / 26

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Answer:

[tex]a^n=x[/tex]

Step-by-step explanation:

The complete question is in the attachment.

We want to find an expression that is equivalent to: [tex]\sqrt[n]{x} =a[/tex]

Note that: [tex]\sqrt[n]{x} =x^{\frac{1}{n} }[/tex]

This implies that:

[tex]x^{\frac{1}{n}}=a[/tex]

Or

[tex]x^{\frac{1}{n}}=a^1[/tex]

[tex]x^{\frac{1}{n}*n}=a^{1*n}[/tex]

This simplifies to:

[tex]x=a^n[/tex]

Answer: The answer is X^n = a

Step-by-step explanation:

Got it right!

The equation for line perpendicular to y = -3x - 2 and passing through the point (9,7)  in slope intercept form is:

[tex]y = \frac{x}{3}+4[/tex]

Solution:

Given that we have to write the equation for line perpendicular to y = -3x - 2 and passing through the point (9,7)

Let us first find the slope of line

The equation of line in slope intercept form is given as:

y = mx + c -------- eqn 1

Where, "m" is the slope of line and "c" is the y - intercept

Given equation of line is:

y = -3x - 2

On comparing the above equation with eqn 1

m = -3

We know that product of slope of a line and line perpendicular to it is equal to -1

Therefore,

[tex]-3 \times \text{ slope of line perpendicular to given line } = -1\\\\\text{ slope of line perpendicular to given line } = \frac{1}{3}[/tex]

Now find the equation of line passing through the point (9, 7)

[tex]\text{Substitute } (x, y) = (9, 7) \text{ and } m = \frac{1}{3} \text{ in eqn 1 }[/tex]

[tex]7 = \frac{1}{3} \times 9+c\\\\7=3+c\\\\c = 4[/tex]

[tex]\text{Substitute } m = \frac{1}{3} \text{ and } c = 4 \text{ in eqn 1 }[/tex]

[tex]y = \frac{1}{3}x+4\\\\y = \frac{x}{3}+4[/tex]

Thus the equation of line in slope intercept form is found

Answer:

1. 22 * 3 = t

2. 4 + 7 = f

Step-by-step explanation:

Addison brought 66 treats to school and Brady caught 11 fish last weekend.

To determine how many treats Addison brought to school, we can write the following equation: t/22 = 3, where t represents the number of treats. To solve for t, we can multiply both sides of the equation by 22 to get t = 3 * 22 = 66. Therefore, Addison brought 66 treats to school.

To determine how many fish Brady caught last weekend, we can write the equation: f - 4 = 7, where f represents the number of fish. To solve for f, we can add 4 to both sides of the equation to get f = 7 + 4 = 11. Therefore, Brady caught 11 fish last weekend.

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Answer:

Using ounces, the inequality should be:

15c + 70b < 112,000

Using pounds, the inequality should be:

0.9375c + 4.375b < 7,000

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Weight of a can of soft drink (c) = 15 ounces

Weight of a bottle of soft drink (b) = 70 ounces

The truck mist be carrying less than 7,000 pounds

2. Find the inequality describing this.

Let's recall that 1 pound = 16 ounces and 1 ounce = 0.0625 pounds

c = Number of cans in the truck

b = Number of bottles in the truck

Upon saying that, we can write the inequality either using ounces or pounds, this way:

Using ounces, the inequality should be:

15c + 70b < 7,000 * 16

15c + 70b < 112,000

Using pounds, the inequality should be:

15 * 0.0625c + 70 * 0.0625b < 7,000

0.9375c + 4.375b < 7,000

Answer:

cos θ = -(√3)/2

tan θ = -1/√3

Step-by-step explanation:

[tex]\frac{\pi }{2} <\theta <\pi \ \ \ sin \ \theta = \frac{1}{2} \\[/tex]

Part A: find cos θ:

Using Pythagorean identity

sin²θ + cos²θ = 1

cos²θ = 1 - sin²θ = 1 - (1/2)² = 1 - 1/4 = 3/4

cos θ = ±√(3/4) = ±(√3)/2

∵(π/2) < θ < π  ⇒ ∴ cos θ = -(√3)/2

Part B: find tan θ:

sec θ = 1/(cos θ) = -2/√3

Using Pythagorean identity

tan²θ + 1 = sec²θ

tan²θ = sec²θ - 1 = 4/3 - 1 = 1/3

tan θ = ±√(1/3) = ± 1/√3

∵(π/2) < θ < π  ⇒ ∴ tan θ = -1/√3

Answer:

116

Step-by-step explanation:

2+2+5+3+6+4+6+2+5+78+2+1

4+5+3+6+4+6+2+5+78+2+1

9+3+6+4+6+2+5+78+2+1

12+6+4+6+2+5+78+2+1

18+4+6+2+5+78+2+1

22+6+2+5+78+2+1

28+2+5+78+2+1

35+78+2+1

113+2+1

116

Answer:

116

Step-by-step explanation:

Answer:

[tex]t=46.4\ years[/tex]

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

[tex]A=P(1+\frac{r}{n})^{nt}[/tex]  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

[tex]t=?\ years\\P=\$200\\A=\$500\\ r=1.98\%=1.98/100=0.0198\\n=4[/tex]  

substitute in the formula above

[tex]500=200(1+\frac{0.0198}{4})^{4t}[/tex]  

[tex]2.5=(1.00495)^{4t}[/tex]  

Apply property of exponents

[tex]2.5=[(1.00495)^{4}]^t[/tex]  

Apply log both sides

[tex]log(2.5)=log[(1.00495)^{4}]^t[/tex]  

[tex]t=log(2.5)/log[(1.00495)^{4}][/tex]  

[tex]t=46.4\ years[/tex]

Final answer:

To find when the investment of $200 at a 1.98% annual interest rate compounded quarterly will reach $500, we use the compound interest formula and solve for t, representing time in years.

Explanation:

The subject is Mathematics, specifically focusing on the concept of compound interest. To find out when the investment will reach $500, we can use the formula for compound interest:

[tex]A = P(1 + r/n)^(nt)[/tex]

Where:
A = the amount of money accumulated after n years, including interest.
P = the principal amount (the initial amount of money).
r = the annual interest rate (decimal).
n = the number of times that interest is compounded per year.
t = the time the money is invested for in years.

In the case of the student's question:

P = $200

n = 4 (since the interest is compounded quarterly)

A = $500

We rearrange the formula to solve for t:

t = (log(A/P)) / (n×log(1+r/n))

Substitute the given values:

t = (log(500/200)) / (4×log(1+0.0198/4))

Use a calculator to compute t, which will give us the number of years it takes for the investment to reach $500.

Answer:

57

Step-by-step explanation:

The midsegment is one half the length of the third side of the triangle, that is

6x + 3 = [tex]\frac{1}{2}[/tex](3x + 87)

Multiply both sides by 2 to clear the fraction

12x + 6 = 3x + 87 ( subtract 3x from both sides )

9x + 6 = 87 ( subtract 6 from both sides )

9x = 81 ( divide both sides by 9 )

x = 9

Thus

midsegment = 6x + 3 = 6(9) + 3 = 54 + 3 = 57

Answer:

square root of 13

Step-by-step explanation:

sqrt(13)=3.606...

pi=3.14...

2pi=6.28...

sqrt(13) is between

Answer:

[tex]m\angle RST=41^o[/tex]

Step-by-step explanation:

The picture of the question in the attached figure

we know that

The measure of the external angle is the semi-difference of the arcs it covers.

so

[tex]m\angle RST=\frac{1}{2}[arc\ RT-arc\ UV][/tex]

substitute the given values

[tex]m\angle RST=\frac{1}{2}[107^o-25^o][/tex]

[tex]m\angle RST=\frac{1}{2}[82^o][/tex]

[tex]m\angle RST=41^o[/tex]

Answer:

18.18 miles.

Step-by-step explanation:

A truck uses 1 tablespoon of gasoline to drive 125 yards.

Now, 1 gallon of gasoline contains 256 tablespoons of gasoline.

So, the truck uses 1 gallon i.e. 256 tablespoons of gasoline to drive (256 × 125) = 32000 yards.

Now, 1-mile distance contains 1760 yards.

Therefore, the truck uses 1 gallon of gasoline to drive [tex]\frac{32000}{1760} = 18.18[/tex] miles. (Answer)  

Answer:

34

Step-by-step explanation:

We know the straight line is equal to 180°, and the three angles that make it are (x+12),100°, and x. We can use the equation 180=(x+12)+100+x to find x.

180=(x+12)+100+x

We can remove the parentheses and combine x plus x to 2x.

180=100+2x+12

100+12=112

so

180=112+2x

-112 -112

68=2x

÷2 ÷2

34=x

Answer:

There is only graph that starts with a line from y = h(x) = -4. Hence the required graph of the plot of h(x) is given by the second graph.

Therefore the correct option is the second graph.

Step-by-step explanation:

i) h(x) = [tex]\frac{x}{4}[/tex] - 4 for x ≤ 0. Therefore when x = 0 h(x) = -4

 There is only graph that starts with a line from y = h(x) = -4. Hence the required graph of the plot of h(x) is given by the second graph.

ii) For x < 0 we see from the from the equation in i) that h(x) will be more and more negative as the value of x decreases from 0.

iii) h(x) = [tex]\frac{x}{3}[/tex] - 3 for 0 < x ≤ 3 . Therefore when x = 0 , h(x) = -3 and again when x = 3  then x = -2 which is again the condition fulfilled by graph 2.

iv) h(x) = [tex]\frac{x}{2}[/tex] - 2 for x ≥ 4 . Therefore when x = 4 h(x) = 0 and as x increases from 4 we see that h(x) also increases to positive values.

This is also satisfied in the plot shown in the second graph.

v) Therefore the correct option is the second graph.

Answer:

Step-by-step explanation:

B

Answer:

Answer is D

Step-by-step explanation:

10x+5y

10(6)+5(9)

60+45=

105

Answer:DE and BC

Step-by-step explanation:

Answer:

5 years

Step-by-step explanation:

We are given;

We are required to determine the time taken for the value of the car to depreciate to half the original value.

Therefore;

$6,250 = $12,500(1 - r/100)^n

0.5 = (1 - 13/100)^n

0.5 = 0.87^n

Introducing log on both sides;

log 0.5 = n log 0.87

Therefore;

n = log 0.5 ÷ log 0.87

  = 4.977

  = 5 years

Therefore, it takes 5 years for the value of the car to depreciate to half the initial value.

Answer:

The statement that is true about deep currents is :

They move cold water along the bottom of the ocean from the Atlantic Ocean to the Pacific Ocean.

The correct option for this is the second option, Option B.

Step-by-step explanation:

The statement that is true about deep currents is :

They move cold water along the bottom of the ocean from the Atlantic Ocean to the Pacific Ocean.

Answer:

i dont know to be honest but i hope someone gives you the right answer that your looking for

Step-by-step explanation:

The missing number in the expression 5/8 + 2/? = 1 1/40 is 5. This was found by first converting the mixed number to an improper fraction and solving for the unknown denominator by finding a common denominator and simplifying the equation.

The question asks to find the missing number in the fraction equation 5/8 + 2/? = 1 1/40. To find the missing denominator, we can first convert the mixed number to an improper fraction, making the equation 5/8 + 2/? = 41/40. We then want the expression on the left to equal 41/40.

To begin, let's solve for the missing denominator by assuming it is 'x'. So, our equation is 5/8 + 2/x = 41/40. We need to get a common denominator to be able to add the fractions. The common denominator for 8, x, and 40 would be 40x. Now we multiply both sides by 40x to clear the fractions:

40x*(5/8) + 40x*(2/x) = 40x*(41/40)

Which simplifies to:

5*5x + 80 = 41x

Now, we move like terms to one side to solve for x:

80 = 41x - 25x

Which simplifies to:

80 = 16x

Dividing both sides by 16 gives us:

x = 5

Therefore, the missing number in the original equation is 5.

Joyce: y = 2x + 7

Haley: y = 3x

From looking at these two equations, we can assume that Haley will eventually catch up and pass Joyce because she sells items for $3 whereas Joyce had a head start of $7, but only sells items for $2.

Using substitution, we plug in y = 3x into y in the first equation: 3x = 2x + 7

This leaves us at x = 7.

y = 3(7) or 21.

The point at which Haley's and Joyce's money will be exactly the same is (7, 21). After this point, Haley will have more money.

Answer:

5.75

Step-by-step explanation:

3 + 11/4

Use BIDMAS to help you

11/4 = 2.75

3+ 2.75 = 5.75

Plz mark brainliest i just need 3 more plz plz plz

Answer:

6

Step-by-step explanation:

0.75/0.125 = 6

6 x 0.125 would add up to be 0.75

To divide decimals, move the decimal point in both numbers to turn the divisor into a whole number. Multiply both numbers by the same power of 10 to get rid of the decimals. Then, divide the resulting whole numbers to get the answer.

To divide decimals, we can move the decimal point in both numbers to turn the divisor into a whole number. In this case, we can multiply both numbers by 1000 to get rid of the decimals. So, 0.75 becomes 750 and 0.125 becomes 125. Now, we can divide 750 by 125 to get the answer. Therefore, 0.75 divided by 0.125 is equal to 6.

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Answer:

Subtract 5x from both sides of the equation

-3y = 12 - 5x

Then, divide each term by -3 and simplify.

y = -4 + 5x

           ------

              3

After that, you'll do this

y= 5x

   ----- - 4

     3

Lastly, you put that into slope-intercept form.

y = 5

    ---- x - 4

     3

Answer:

D Price of a pencil

Step-by-step explanation:

In A the number of students has to be an integer because you can't have part of a student

In B most likely your teacher will give you your score in a whole number form like 95% and not 94.87% because they would round it if it isn't a whole number already

C is similar to A you can't have a part of a computer key

Lastly in D stores very frequently have there prices at something like $1.99 which isn't a integer

The situation that would most likely be represented by a rational number that is not an integer is the price of a pencil.

The situation that would most likely be represented by a rational number that is not an integer is D) price of a pencil. A rational number is any number that can be expressed as a fraction, where both the numerator and denominator are integers. The price of a pencil can be a rational number in the form of a decimal, such as 0.99 or 2.50, which are not whole numbers.

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The lengths of the three sides of the triangle are 7m, 7m, and 12m.

Let the length of the two equal sides be 'x'.

The third side measures 2m less than twice the common length, so it is (2x - 2)m in length.

Given that the perimeter of the triangle is 26m, we can set up the equation:

x + x + (2x - 2) = 26

Simplifying the equation:

4x - 2 = 26

4x = 28

x = 7

So, the lengths of the three sides are 7m, 7m, and (2x - 2)m = (2 * 7 - 2)m = 12m.

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Final answer:

The triangle with two sides of equal length and a perimeter of 26 m has sides measuring 7 m, 7 m, and 12 m.

Explanation:

To solve for the lengths of the sides of the triangle described in the question, we can set up an equation based on the information given. Since two sides of the triangle have the same length, we can call that common length 'x'. The third side is described as being '2 m less than twice the common length', which can be written as '2x - 2'. The perimeter of the triangle, which is the sum of the lengths of all sides, is given as 26 m.

Therefore, the perimeter equation would be:

x + x + (2x - 2) = 26

This simplifies to:

4x - 2 = 26

Adding 2 to both sides, we get:

4x = 28

Dividing both sides by 4, we find x:

x = 7

Now we know that the two sides of equal length are both 7 m, and the third side is:

2x - 2 = 2(7) - 2 = 12

So the lengths of the three sides of the triangle are 7 m, 7 m, and 12 m.

Jason needs to ride 0.75 miles more to reach the end of the path

Solution:

Given that Jason begins at the start of a path and rides his bike [tex]11\frac{1}{2}[/tex] miles on the path

From given information,

[tex]\text{Total length of path } = 12\frac{1}{4} \text{ miles } = \frac{4 \times 12 + 1}{4} = \frac{49}{4} \text{ miles }[/tex]

[tex]\text{Distance covered already } = 11\frac{1}{2} \text{ miles } = \frac{11 \times 2 +1}{2} = \frac{23}{2} \text{ miles }[/tex]

To find: Distance in miles Jason must ride to reach the end of the path

Thus subtracting distance already covered from total distance, we get the distance Jason must ride to reach the end of the path

[tex]\text{Distance needed } = \text{Total length of path } - \text{Distance already covered }\\\\\text{Distance needed } = \frac{49}{4} - \frac{23}{2}\\\\\text{Distance needed } =\frac{49}{4} - \frac{23 \times 2}{2 \times 2}\\\\\text{Distance needed } =\frac{49}{4} - \frac{46}{4} = \frac{49-46}{4} = \frac{3}{4} = 0.75[/tex]

Thus Jason needs to ride 0.75 miles more to reach the end of the path

Answer:

Please read the answer below.

Step-by-step explanation:

Let's add the two expressions as they are written in the question:

- - 4.25r + 3 and 2.5r - 6 = 4.25r + 3 + 2.5r - 6

= 6.75r - 3

In case it wasn't written accurately and the expressions are (first on the left with just one negative sign):

- 4.25r +3 and 2.5r- 6 = - 4.25r + 3 + 2.5r - 6

= -1.75r - 3