PLEASE HELP!!!!
The Smiths and the Johnsons were competing in the final leg of the Amazing Race. In their race to the finish, the Smiths immediately took off on a 165-kilometer path traveling at an average speed of v kilometers an hour.
The Johnsons' start was delayed by 1/2 hour. Eventually, they took a 180-kilometer path to the finish, traveling at an average speed that was 20 kilometers per hour faster than the Smiths' speed.
The Johnsons arrived at the finish line first and won the race!
Write an inequality in terms of vvv that models the situation.

Answers

Answer 1

Answer:

180/v+20 +  1/2 < 165/v

Step-by-step explanation:

its the khan academy  


Related Questions

Bob swam a total of 250
meters on Monday and
Tuesday. On Tuesday, the
number of meters he swam
was 30 less than 3 times the
amount he swam on
Monday. How many meters
did Bob swim on Monday?

Answers

Answer:

i think 220

Step-by-step explanation:

because if he swim 250 then 30 less it would be 220

please solve this ..​

Answers

Answer:

3×81^x=9^{x+4}

since power of no is multiplied to its remaining power

3×3^4x=3^2{x+4}

if there is like terms then power is added

3^{1+4x}=3^{2x+8}

if there is like terms then power can be compared

so{1+4x}={2x+8}

1+4x=2x+8

4x-2x=8-1

2x=7

x=7/2 is your answer

Suppose (DE) = 103 ft. Calculate the distance of (AB) to the nearest tenth of a foot. Show your work. Don’t forget to label your answer.

Answers

Here u can use photomath or wolframealpa they will solfve it for u

I will give brainliest Given ⊙N, what is mABC ?

A circle with center point N and three points A, B, C on its circumference. A line is drawn connecting the points A, N and C and the angle ANC is given as 138 degree.

A. 111°
B. 138°
C. 222°
D. 276°

Answers

9514 1404 393

Answer:

  138°

Step-by-step explanation:

The measure of arc ABC is the measure of the corresponding central angle, ∠ANC. That angle is shown as 138°, so the measure of arc ABC is 138°.

Measure of an angle  ABC is 111 degrees i.e. [tex]m[/tex]∠ABC = 111 degrees.

Angle subtended by an Arc of a circle-Theorem

The angle subtended by an arc at the center of the circle is double the angle subtended by the same arc at the circumference of the circle.

According to the given question

The angle subtended at the center of circle, i.e. ∠ANC = 138 degrees.

The exterior angle at the center is (360 - 138)degrees = 222 degrees

by angle subtended by an Arc of a circle theorem

[tex]m[/tex]∠ABC = [tex]\frac{222}{2}[/tex] [tex]= 111 degrees[/tex]

Hence, [tex]m[/tex]∠ABC = 111 degrees.

Learn more about angle subtended at the center of circle theorem here:

https://brainly.com/question/2506683

#SPJ2

 

   

Please help !!

Find the limit of the function by using direct substitution.
limit as x approaches three of quantity x squared plus eight x minus two.

0
-31
Does not exist
31

Answers

Given:

The limit problem is:

[tex]\lim_{x\to 3}(x^2+8x-2)[/tex]

To find:

The limit of the function by using direct substitution.

Solution:

We have,

[tex]\lim_{x\to 3}(x^2+8x-2)[/tex]

Applying limit, we get

[tex]\lim_{x\to 3}(x^2+8x-2)=(3)^2+8(3)-2[/tex]

[tex]\lim_{x\to 3}(x^2+8x-2)=9+24-2[/tex]

[tex]\lim_{x\to 3}(x^2+8x-2)=33-2[/tex]

[tex]\lim_{x\to 3}(x^2+8x-2)=31[/tex]

Therefore, the correct option is D.

What is the coefficient of q in the sum of these two expressions?

(23q – 34) and (–16q – r)
2/3
3/4
1/2
1

Answers

Answer:

23 and - 16 are the coefficients

Step-by-step explanation:

1) It takes Elisa six hours to pick forty bushels of apples. Kim can pick the san amount in ten hours. Find how long it would take them if they worked together​

Answers

Step-by-step explanation:

Elsa 40÷6= 6.666, or 6 2/3 bushels per hour

Kim 40÷10= 4 bushels per hour.

together, they pick 10.66 bushels per hour, so 40÷ 10.66= 3.75 hours, or 3 hours, 45 minutes

Factor the polynomial: x^7 - x^5

Select one:
a. x^5(1 - x)
b. x^5(1 - 2x)
c. x^5(x^2 - 2x)
d. x^5(x^2 - 1)

Answers

Answer:

d. x^5(x^2 - 1)

Step-by-step explanation:

x^7 - x^5

Factor out x^5

x^5(x^2−1)

Consider x^2−1. Rewrite x^2−1 as x^2−1^2. The difference of squares can be factored using the rule: a^2 - b^2 =(a−b)(a+b).

(x−1)(x+1)

Rewrite the complete factored expression.

x^5(x−1)(x+1)

Simplify.

(x^2 - 1)x^5

Swap terms to the left side.

x^5(x^2 - 1)

Answer: D. [tex]x^{5} (x^{2} -1)[/tex]

Step-by-step explanation:  

x^5 (x^2-1)

x^5 (x^2-1^2)

x^5 (x+1)(x-1)  

WILL MARK BRANIEST IF ITS RIGHT PLEASE HELP ME I HAVE BEEN STUCK ON THIS QUESTION (note for the problem look at picture 1 for your answer choices look at picture 2.

Answers

Answer:

I think B is right answer

Comparing fractions by finding a common denominator

Answers

Answer:

In order, 35/40, 36/40, <

Step-by-step explanation:

Chris works at a local hardware store where she earns a weekly salary of $150 and a 3% commission on all sales this week she sold $1500 worth of products

Answers

Answer:

Commission is $45.00

Weekly salary was $150.00 + $45.00

She earned $195.00 for her paycheck

Step-by-step explanation:

Alex's driveway is 27 yards long and 10 yards wide.how many feet long is the driveway

Answers

Answer:

81 feet

Step-by-step explanation:

3 feet = 1 yard

Answer:

81 feet wide

Step-by-step explanation:

1) The 10 yards wide is not necessary since we only need length.

2) There are 3 feet in a yard.

3) 27 yards multiplied by 3 feet equals = 81 feet.

4) 27 * 3 = 81 feet

Which expression is equivalent to -5(1+7x)+3(3+4x)

Answers

Answer:

0(2+14x)+6(6+8x)

Step-by-step explanation:

ach case:
(ii) (+5) + (+2)
(v) (-5) + (-2)
(viii) (+6) + (-3)
(xi) (-4) + (+8)
illustrate each of th​

Answers

Answer:

Step-by-step explanation:

(+5) + (+2) = +7

If both numbers have same sign, add and the result will have the common sign

v) (-5) + (-2) = (-7)

Both numbers have 'negative sign'. So, add and the result will have the 'negative sign'

Viii) (+6) + (-3) = +3

Both numbers have different sign. So, subtract and the result will have the sign of the bigger number. Here the bigger number is '6' and its sign is 'positive'. so, the result will have positive sign

xi) (-4) + (+8) = +4

Both numbers have different sign. So, subtract and the result will have the sign of the bigger number. Here the bigger number is '8' and its sign is 'positive'. so, the result will have positive sign

3RD TIME PLS REALLY NEED THIS

Answers

Answer:

Part A: a) Corresponding angles

Part B: b) 12x - 10 = 10x + 8

Part C: x = 9

m<1 = 98

m<2 = 82

Explanation:

B)

Since they're corresponding angles, they're equal to each other:

12x - 10 = 10x + 8

C)

12x - 10 = 10x + 8

2x = 18

x = 9

m<1:

12(9) - 10 = 98

m<2:

98 + y = 180

y = 82

9514 1404 393

Answer:

  A. a

  B. b

  C. 9, 98, 82

Step-by-step explanation:

See attached.

"Corresponding" angles are those in the same direction from the point of intersection. Here, angles 1 and 3 are both northwest of the intersection point, so are corresponding.

From ...

  12x -10 = 10x +8

  2x = 18 . . . . . . . . . . . add 10-10x to both sides of the equation

  x = 9 . . . . . . . divide by 2

Angles 1 and 3 are the same measure, so we choose the easier expression to evaluate mentally. Multiplying by 10 is easier than by 12, so we use 10·9+8=98 as the measure of angles 1 and 3. Angle 2 is the supplement of this.

At 106°F, a certain insect chirps at a rate of 67 times per minute, and at 108°F, they chirp 83 times per minute. Write an equation in slope-intercept form that represents the situation.

Answers

Answer:

[tex]y=8x-781[/tex]

Here, [tex]x[/tex] represents temperature and [tex]y[/tex] denotes rate of chirping per minute.

Step-by-step explanation:

Let [tex]x[/tex] represents temperature and [tex]y[/tex] denotes rate of chirping per minute.

At [tex]106[/tex]°F, a certain insect chirps at a rate of [tex]67[/tex] times per minute.

Take [tex](x_1,y_1)=(106,67)[/tex]

At [tex]108[/tex]°F, they chirp [tex]83[/tex] times per minute.

Take [tex](x_2,y_2)=(108,83)[/tex]

Slope intercept form:

[tex]y-y_1=(\frac{y_2-y_1}{x_2-x_1})(x-x_1)[/tex]

[tex]y-67=(\frac{83-67}{108-106})(x-106)\\\\y-67=(\frac{83-67}{108-106})(x-106)\\\\y-67=(\frac{16}{2})(x-106)\\\\y-67=8(x-106)\\y-67=8x-848\\y=8x+67-848\\y=8x-781[/tex]

first think of the pairs of numbers that add 9 then subtract to 7

Answers

Step-by-step explanation:

x+9-7

x+2?????????????

Find the slope of the line that passes though (6,5) and (2,5)

Answers

Your slope is

negative 11 over 3 !!!

Or approximately 3.67 (rounded)

Step-by-step explanation:

Five oranges weigh as much as two grapefruits. An oranges weighs 80 g. What is the weight of one grapefruit?​

Answers

Answer: 200 grams.

Step-by-step explanation:

80 x 5 = 400

400 divided by 2 = 200.

We need to find how much 5 oranges weighs by multiplying 80 by 5.

80x5=400

So 5 oranges weighs 400 grams. We also need to find the weight of one grapefruit. Since 5 oranges, or 400 grams, weigh the same as 2 grapefruits, we need to divide 400 by 2.

400/2=200

So each grapefruit weighs 200 grams.

---

hope it helps

I need help trying to find the trig function for this problem

Answers

9514 1404 393

Answer:

  x ≈ 136.7 ft

Step-by-step explanation:

As you have marked, the relevant sides are the adjacent side and the hypotenuse. The mnemonic SOH CAH TOA reminds you ...

  Cos = Adjacent/Hypotenuse

For this triangle, that means ...

  cos(43°) = (100 ft)/x

  x = (100 ft)/cos(43°) . . . . . . . . . . multiply both sides by x/cos(43°)

  x ≈ 136.73 ft

The length x is about 136.7 feet.

Paul will roll two standard dice simultaneously. If Event A = both dice are odd and Event B = at least one die is even, which of the following best describes events A and B?

Answers

Answer:

Mutually Exclusive

Dependent

Step-by-step explanation:

Given that both events cannot occur at the same time, that is "both dice cannot be odd (event A) if at least one of the dice is even (event B).

Hence, this is MUTUALLY EXCLUSIVE.

Also, given the fact that the occurrence of one event (event A) affects the probability of the other (event B).

Hence, this is DEPENDENT.

A distance of 5 units is best described by the distance between the —

Answers

Answer:

c and d

Step-by-step explanation:

For the function y = 4x – 1, what is the output when the input is 10?

Answers

Answer:

39

Step-by-step explanation:

so the input is x and the out put is y

using this we know that x=10

let plug that into the function

y=4(10)-1

y=40-1

y=39

since y is the output, the output is 39.

Which statement is NOT true about the normal probability density function?

A. It is also known as the bell curve.

B. Its shape is completely concave downward.

C. It has 2 inflection points.

D. It has reflectional symmetry.

Answers

Answer: The correct answer is

B. Its shape is completely concave downward.

I don't know how to solve this. How would I solve this? Thanks!!!!

Answers

Answer:

x = 11 units

Step-by-step explanation:

Area of triangle = (base + base 2) * h *1/2

so (7 + x )* 7 * 1/2 = 63

63 x 2 = 126

126 / 7 = 18

18-7 = x

x = 11

Check

(7+11)* 7 * 1/2

18* 7 = 126

126 x 0.5 = 63

CORRECT!

(p.s., tell me if wrong :P)

HElppppp will mark brainlest!!!!!!

Answers

Answer:

1.(that looks like letter L) Yes for congruent and no for similar 2.(circles) Yes congruent and no for similar 3. (triangles) yes similar and no for congruent 4. ( square & rectangle) yes it is similar no for congruent

Step-by-step explanation:

congruent is are the same size and shape, similar have different sizes.

Tyler used 1 1/2 gallons of paint to paint 5/7 of a fence. How many gallons will it take to paint the whole fence?

1) Write a multiplication equation representing this question.

2) Write a division equation representing this question.

Explain your reasoning.

Answers

9514 1404 393

9514 1404 393

Answer:

  1) (1 1/2)(7/5) = g

  2) (1 1/2)/(5/7) = g

Step-by-step explanation:

1) Tyler has painted 5/7 of the 7/7 of the fence. So the total amount of the fence is (7/7)/(5/7) = 7/5 as much as what was already painted.

The total amount of paint needed is then 7/5 the amount already used:

  g = (7/5)(1 1/2) . . . . . gallons of paint needed for the whole fence

__

2) If g gallons are required for the whole fence, the amount used so far for 5/7 of the fence is 5/7 of the quantity required:

  (5/7)g = 1 1/2

  g = (1 1/2)/(5/7) . . . . division expression for the paint needed

Determine whether the following graph represents a function.

Answers

Yes it is a function

Answer:

yes the graph represents a function

Step-by-step explanation:

plz mark me brainliest

Can someone please help?

Answers

The answer is H. You have to distribute 6 3/4 into -11.5. The answer is negative because a positive (+) times a negative (-) is a negative (-).

Answer:

77 5/8

Step-by-step explanation:

a) Multiply the whole number 6 by the denominator 4. Whole number 6 equally 6 * 4/4

= 24/4

b) Add the answer from the previous step 24 to the numerator 3. New numerator is 24 + 3 = 27

c) Write a previous answer (new numerator 27) over the denominator 4.

Conversion a decimal number to a fraction: -11.5 = -115/10

= -23/2

a) Write down the decimal -11.5 divided by 1: -11.5 = -11.5/1

b) Multiply both top and bottom by 10 for every number after the decimal point. (For example, if there are two numbers after the decimal point, then use 100, if there are three then use 1000, etc.)

-11.5/1

= -115/10

c) Simplify and reduce the fraction

-115/10

= -23 * 5/2*5

= -23 * 5/2*5

= -23/2

Multiple: 27/4

* (-11.5) = 27 · (-23)/4 times5

= -621/8

I need help please !!!

Answers

Answer:

the answer is false because congruent mean 3 equal sides

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