solve the question below, please

Answer:

30

Step-by-step explanation:

I could be wrong

The usual speed of Eric's mother is 4 miles per hour .

Eric´s mother drives to work in 20 min when driving at her usual speed.

Let the usual speed of Eric's mother be "u"  miles per hour (mph)

When the traffic is bad she drives 10 miles per hour slower.

The speed of Eric's mother when the traffic is bad = u-10 mph

The time taken by Eric's mother when the traffic is bad = 30 min

[tex]\rm Displacement = \dfrac{Velocity }{Time }[/tex]

The considering the displacement  in both  the cases is same hence we can

say that

[tex]\rm \dfrac{u}{20/60} = \dfrac{-(u-10)}{30/60} \\\rm 3u = -2u +20 \\5u = 20 \\u = 4[/tex]

So the usual speed of Eric's mother is 4 miles per hour .

For more information please refer to the link given below

https://brainly.com/question/23294846

Answer:

Ratio of cost of a pen to cost of a ball pen is 15:7

Step-by-step explanation:

Given that:

Cost of dozen pens = ₹180

Unit rate = [tex]\frac{180}{12}[/tex]

Unit rate = ₹ 15 per pen

Cost of 8 ball pens = ₹ 56

Unit rate = [tex]\frac{56}{8}[/tex]

Unit rate = ₹7 per ball pen

Ratio of cost of a pen to cost of a ball pen,

15 : 7

Hence,

Ratio of cost of a pen to cost of a ball pen is 15:7

Isolate the variable by dividing each side by factors that don't contain the variable.

n = 22

Answer:

n=22

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

8(5+4n)+11=−5(3−7n)

(8)(5)+(8)(4n)+11=(−5)(3)+(−5)(−7n)(Distribute)

40+32n+11=−15+35n

(32n)+(40+11)=35n−15(Combine Like Terms)

32n+51=35n−15

32n+51=35n−15

Step 2: Subtract 35n from both sides.

32n+51−35n=35n−15−35n

−3n+51=−15

Step 3: Subtract 51 from both sides.

−3n+51−51=−15−51

−3n=−66

Step 4: Divide both sides by -3.

−3n /−3  =  −66 /−3

n=22

Answer:

y > 1/3 x -3

Step-by-step explanation:

slope = 1/3

y intercept = -3

equation: y > 1/3 x -3

Answer:

p = 110

Step-by-step explanation:

p = 55 × 2

55 × 2 = 110

hope this helps

Answer:

p = 27.5

Step-by-step explanation:

p/2 = 55

p = 55/2

p = 27.5

Please mark me brainlest

Answer:

b

Step-by-step explanation:

cause it is

Answer:

84

Step-by-step explanation:

im not sure tho

Answer:

the one in the bottom is the graph in pretty sure

Answer:A

Step-by-step explanation:

Edge 2021

(a)-7

(b)17

(c)7

(d)-33

Step-by-step explanation:

a)

The first laptop

The second laptop

b)

Monthly percent decrease

The first laptop:

The second laptop:

c)

The second laptop will lose less value in 5 years hence is better choice

See the graph attached

Answer:

$6.99

Step-by-step explanation:

Divide the total cost by the number of months

4

Step-by-step explanation:

Answer:

I think it is B.

Answer:

There no solution, because there have no k in this equation.

Hello!

[tex]\large\boxed{9 \%}[/tex]

To find the percent tax, use the equation:

[tex]\text{ \% tax} = \frac{\text{ price after - initial price}}{\text{initial price}}[/tex]

Substitute in the given values:

[tex]\text{ \% tax} = \frac{\text{ 21.80 - 20}}{\text{20}} \\\\\text{ \% tax} = \frac{1.80}{20} = 0.09[/tex]

Multiply by 100 to find the percent tax:

[tex]0.09 * 100 = 9\%[/tex]

Answer: Its 9%

Step-by-step explanation:

Answer:or the premises and the conclusion. (1)푝→푞(2)푞→푟(3)∴푝→푟2.What do we call an argument form that consists of two premises and a conclusion?3.Look at the table of valid argument forms (also calledrules of inference) a)What is the name of the argumentform can be considered as reasoning from the contrapositive?b)If assuming that the negation of a statement leads to a contradiction, what can weconclude?c)What is the conclusion you can draw from the premises (푝˅푞)and ~푞?4.Explain the difference between a valid argument and a sound argument.5.It ispossible to make a valid argument with a false premise and a false conclusion. Look at the example given in the

Step-by-step explanation:

Answer:

57

Step-by-step explanation:

when you divide both of the answers you get 57 and I'm 98 percent positive it's correct

Answer:

97?

Step-by-step explanation:

323 people

323-80= 234

234-137

97?

again if im wrong im truly sorry

Step-by-step explanation:

It's 200$

50×14=700+200=900

900-700=200$

$200 is saved by paying the total amount at the time of the​ purchase.

Given that, a television sells for ​$700. Instead of paying the total amount at the time of the​ purchase, the same television can be bought by paying ​$200 down and ​$50 a month for 14 months.

We need to find how much is saved by paying the total amount at the time of the​ purchase.

The selling price of something is the price for which it is sold. The difference between buying and selling prices is called the spread.

The cost price of television=200+50×14=200+700=$900

The money saved by paying the total amount =900-700=$200

Therefore, $200 is saved by paying the total amount at the time of the​ purchase.

To learn more about a selling price visit:

https://brainly.com/question/27796445.

#SPJ2

Answer: P(4) - 4/12,1/3,33%,0.33

Step-by-step explanation:

My teacher went over the answers

Answer:

First is correct

Second is perimeter

Why? Because perimeter is the surounding part

Answer:

The first one is correct the second one is Perimeter

Step-by-step explanation:

Hope this Helps! :)

Answer:

Step-by-step explanation:

1) it is not this answer because you cant order 13.86 sandwiches. it has to be a whole number.

2) Not this answer. If he bought 14 sandwhichs hed have to pay 83.86 and he doesnt have 36 cents xtra.

3) He CAN order 12 sandwhiches. if he has $83 and if you bought twelve sandwiches he would spend $71.88 which is still within the range he can buy from.

4) He CANNOT order .5 of a sandwhich so i wouldnt select this one.

5) He CAN order 2 sandwhiches. he has enough money for that

6) he CANNOT order negative amount of sandwhiches.

Answer:

17/33

Step-by-step explanation:

100 x = 51.51

100 x − x = 51.51 − 0.51

99 x = 51

divide both sides by 99 to get  x  as a fraction.

x=51/99

=17/33

Answer:

23/45

Step-by-step explanation:

This is directly from Khan academy itself as I got this question too.

(The red marker is the incorrect answer I put in before.)

Answer:

411.1111111

Step-by-step explanation:

18% of x = 74

Convert 18% into a decimal.

0.18 • x = 74

Isolate x by dividing by 0.18.

x = 411.1111111

Check answer.

0.18 • 411.1111111 = 74

74 = 74

Answer:

0.008333 Servings per Calorie

Step-by-step explanation:

Answer: Where is the table?

Step-by-step explanation:

Answer:

When time watching TV increases the grade decreases

Step-by-step explanation:

U just gotta look at the graph and find the relationship

I hope that this helps you out...

Answer:

Step-by-step explanation:

Congruent are angles that are in identical angles. For example the orange colors are congruent because both of the angles are across each other, and because of them being crossed they are both the same degrees making the congruent, same with the blue but instead of being across eachother they are in the angle to the left of the parallel lines that are the same degrees as well.

Step-by-step explanation:

5x+3y=16

-10x-3y=11

=-5x=-27

x=5.4

substitute x=5.4 into equation 1

5x+3y=-16

5(5.4)+3y=-16

27+3y=-16

27+16=3y

43=3y

y=14.3333

5x+7x=660;

12x=660;

x=660:12;

x=55 (kg).

Then 5x=5×55=275 kg and 7x=7×55= 385 kg.

The required ratio is therefore

660= 275:385.

Answer at the bottom

Step 1: Simplify both sides of the equation.

4x−7x=34−55

4x+−7x=34+−55

(4x+−7x)=(34+−55)(Combine Like Terms)

−3x=−21

−3x=−21

Step 2: Divide both sides by -3.

−3x

−3

=

−21

−3

x=7

Answer:

x=7

Answer:

[tex]\displaystyle \frac{4}{3}[/tex]

Step-by-step explanation:

[tex]\displaystyle 3y - 4x + 3 = 0 → 3y - 4x = -3 → 3y = 4x - 3 \\ \\ y = 1\frac{1}{3}x - 1[/tex]

When converted to Slope-Intercept Form, it is alot easier to determine the rate of change [slope] of the function because [tex]\displaystyle b[/tex] is the y-intercept, and the slope is represented by [tex]\displaystyle m,[/tex] which in this case is [tex]\displaystyle 1\frac{1}{3}, or\: \frac{4}{3}.[/tex]

I am joyous to assist you at any time.

Answer:

a 1.6

Step-by-step explanation:

i am a sports center worker