please help me with this.

Answer:

4.074 hours

Step-by-step explanation:

r =

The formula for speed = Distance × Time

Hence,

Let the outbound speed = r

return trip speed = r + 25x/100 = 125r/100 = 1.25r

Note that: 9 hours and 20 minutes = 9.167

Let t1 and t2 be the time taken to travel on way and return journey.

t1 + t2 = 9 hr 10 min = 9.167 hrs

Hence:

2688/r + 2688/1.25r = 9.167

LCM(1.25r)

(2688 × 1.25) + 2688 /1.25r= 9.167

3360 + 2688 = 9.167 × 1.25r

6048 = 11.45875r

r = 6048/11.45875

Outbound trip rl = 527.8062615904876mph

Return trip speed = r + 25x/100 = 125r/100 = 1.25r

= 1.25 ×

659.75782699mph

Time for return trip = Distance/Speed

= 2,688 miles/659.75782699mph/

= 4.0742222222 hours

Approximately = 4.074 hours

[tex]\boxed{\underline{\blue{\textrm{Area of Rectangle = l × b}}}}[/tex]

Area = 3x⁴ × 5x⁵

Area of rectangle = 15x⁹

Answer:

Area of rectangle = 15x⁹

Answer:

38 Quarters

Step-by-step explanation:

D=number of dimes; Q=number of quarters=D+3

.

$0.10D+$0.25Q=$13

$0.10D+$0.25(D+3)=$13

$0.10D+$0.25D+$0.75=$13

$0.35D=$12.25

D=35

.

Q=D+3=35+3=38

ANSWER: He has 38 quarters.

Answer:

20

Step-by-step explanation:

(20 books / 2) * 3 = 30 minutes

Answer:2

Step-by-step explanation:

Answer:

1.7 x 10^-27

Step-by-step explanation

Move the decimal to the right until it's a single digit number, because you are moving it to the right, it would be a negative number. If you are able to round up then please do. Remember to check your significant figures if you're in chemistry.

Answer:

:) :) :) :) :) :) :) Hiiiiiiiii

Step-by-step explanation:

It -13. When you multiply 5 and -3, it's -15 and hen add 2, ad it will be -13.

Answer:

-1

Step-by-step explanation:

(9,3) (0,12)

(x1,y1) (x2,y2)

to find the slope, use this equation:

y2-y1/x2-x1

12-3/0-9

the slope is 9/-9 = -1

Answer:

10

Step-by-step explanation:

multiply the numerators or the top numbers 5/7 * 14/1

14*5=70

divide it by the denominator or the bottom number 70/7=10

The total earnings with fees this week will be $571.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

Takira is an arrangement setter for a deals association. She makes $12 an hour in addition to a $3 charge for every arrangement that is planned.

Let 'x' be the number of hours and 'y' be the number of appointments. Then the equation is given as,

Total earnings = $12x + $3y

This week. Takira worked 40 hours and scheduled 31 appointments. Then the total earnings are calculated as,

Total earnings = $12(40) + $3(31)

Total earnings = $480 + $91

Total earnings = $571

The total earnings with fees this week will be $571.

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Answer:

100

Step-by-step explanation:

M = log(I/S)

The intensity of the first earthquake:

8 = log(I₁/S)

10⁸ = I₁/S

I₁ = 10⁸ S

The intensity of the second earthquake:

6 = log(I₂/S)

10⁶ = I₂/S

I₂ = 10⁶ S

The ratio is:

I₁/I₂ = (10⁸ S) / (10⁶ S)

I₁/I₂ = 100

It is 100 times stronger.

An earthquake with a magnitude of 8 is 100 times stronger than an earthquake with a magnitude of 6.

Given the following data:

To determine how many times stronger is an earthquake with a magnitude of 8 than an earthquake with a magnitude of 6:

Mathematically, the magnitude of an earthquake is given by the formula:

[tex]Magnitude = Log(\frac{I}{S} )[/tex]

Where:

For earthquake A:

[tex]8=Log (\frac{I_A}{S} )\\\\10^8=\frac{I_A}{S}\\\\I_A=S10^8[/tex]

For earthquake B:

[tex]6=Log (\frac{I_B}{S} )\\\\10^6=\frac{I_B}{S}\\\\I_B=S10^6[/tex]

For strength:

[tex]Strength = \frac{I_A}{I_B} \\\\Strength = \frac{S10^8}{S10^6} \\\\Strength = 10^2[/tex]

Strength = 100

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Answer:

10 mil

Step-by-step explanation: 10x10x10x10x10x10x10= 10,000,000

Answer:

in finding the inverse of an equation, you just switch x and y, so f(x)=y becomes f(y)=x

Answer:

Step-by-step explanation:

Given:

∠1 and ∠2 are supplementary.

To prove:

l║m

Proof:

∠2 is a supplement of a. ∠1 (Given)

∠3 is a supplement of b. ∠1 [Linear pair of angles are supplementary]

Since supplements of the same angle are congruent,

c. ∠1 ≅ d. ∠2

Since ∠2 and ∠3 are also corresponding angles, l║m by the converse of same side interior angles postulate.

Answer:

The smaller cup has a height of 4cm

Step-by-step explanation:

The two cups have a proportional relationship. This means that the since the smaller cup has a capacity that is half of the larger cup, the height will also be half of the larger cup height.

.25 is half of .5

_ is half of 8

Hope this helped!

Answer:

7.5 inch

Step-by-step explanation:

[tex]{s}^{3} = 421.875 \\ s = \sqrt[3]{421.875} \\ s = 7.5 \: inch[/tex]

Answer:

132+180+ 168=480

Step-by-step explanation:

3/8 of 480= 180 (tuna)

35% of 480=168 (beef)

ratio is 132 (ham)

and adds up to 480

Answer:

They have 5 packages of pancake mix.

N(p) = 140*p

Represents the number of people that can be feed with p = # of packages of pancake mix used.

Now, the domain will be the set of the possible values of p that we can use here.

the set of possible values of p will be:

{0, 1, 2, 3, 4, 5}

We can not use more than 5 because there are only 5 packages.

But we can use actually half a package or a third, so we not should use only whole numbers in the domain, then the domain can be written as:

D = 0 ≤ p ≤ 5

Now, the range is the set of the possible values of N(p)

The minimum will be when p = 0.

N(0) = 140*0 = 0

The maximum will be when p = 5

N(5) = 140*5 = 700

Then the range can be written as:

R = 0 ≤ N ≤ 700

Here we could add another restriction, because we can only feed a whole number of people, then we also should add the restriction that N must be a whole number:

R = 0 ≤ N ≤ 700, N ∈ Z

Answer:

4.15 hours

Step-by-step explanation:

540x = 2240

Divide

x = 4.14814815

Answer:

4.15 hours

Step-by-step explanation:

Answer:

(p+3)(p-7) = 0

Step-by-step explanation:

Given p=x^2+6p and (x^2+6)^2-21=4x^2+24

We are to substitute the the p = x²+6 into the expression as shown;

The expression (x^2+6)^2-21=4x^2+24 will become

(x²+6)²-21 = 4(x²+6)

On substituting p, the expression becomes;

p²-21 = 4p

Subtract 4p from both sides

p²-21-4p = 4p-4p

p²-4p-21 = 0

p²-7p+3p-21 = 0

p(p-7)+3(p-7) = 0

(p+3)(p-7) = 0

Hence the expression in terms of p is (p+3)(p-7) = 0

Answer:

Step-by-step explanation:

Answer:

car a travels 250 miles car a travels 150 miles in 2 hours

Step-by-step explanation:

car a speed is 150 per hour and car b is  about 70 or 60 miles per hour

car a traveled 100 more miles than car b and the graph car b is 150 miles

Answer:

150 and 2

Step-by-step explanation:

Answer:

Angle T

Step-by-step explanation:

Because it’s the closest to Angle R

if I'm right the small triangle is similar to the big one so it would be R&T just like Q&U and S&V go together

Answer:

4 Hours

Step-by-step explanation:

Since the equation is:

y = 9x + 16

You have to find x

This is the logical way:

52-16 = 36 because thats the starting fee

So 36 divided by 9 equals 4

You do that because 9 is the charge per hr

So he rented it for 4 hours.

Hope this helps:)

Answer:

<BAC=58°

<CAD=32°

Step-by-step explanation:

15x-2+7x+4=90

22x+2=90

22x=90-2

22x=88

x=88÷22

x=4

<BAC=15x-2=15(4)-2=60-2=58°

<CAD=7x+4=7(4)+4=28+4=32°

Answer:

you literally just write every single one

Step-by-step explanation:

for example: angle HVI angle IVJ

Answer:

12.55 milliliters

Step-by-step explanation:

0.25+12.3=12.55

Good luck!

The  mixture contains 12.55 milliliters.

Two or more expressions with an Equal sign is called as Equation.

Given that For part of a science experiment, Andre adds 0.25 milliliters of dye to 12.3 milliliters of water.

we need to find the amount of  milliliters does the mixture contain.

Add twelve point three plus zero point two five.

12.3+0.25

 12.30

+  0.25

_______

12.55

Hence, the  mixture contains 12.55 milliliters.

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