1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Debora [2.8K]
2 years ago
5

1.A pedestrian crosswalk consists of black and white strips each 0.4m wide. The crosswalk begins and ends with a white strip, an

d there are 8 white strips in all. How wide is the crosswalk?
Mathematics
1 answer:
lianna [129]2 years ago
7 0

Answer: 6m

Step-by-step explanation:

Given data:

Width of the strips on the cross walk = 0.4m

No of white strips on the cross walk = 8.

No of black strips = 7

Solution:

Since they are 8 whites, and the cross walks starts and ends with a white stripe.

This simply means they are 7 black stripes

Width of the cross walk

= 7 + 8 * 0.4m

= 15 + 0.4m

= 6m

Width of the cross walk is 6m.

You might be interested in
An airplane is flying at 180mph. A jet flying at 330 mph leaves 1 hour later traveling in the same direction. How long will it t
zimovet [89]

To solve this problem, let us first assign some variables. Let us say that:

v1 = velocity of airplane = 180 mph

t1 = time travelled by airplane

v2 = velocity of jet = 330 mph

t2 = time travelled by jet

 

Since we know that distance is the product of velocity and time, and that the distance travelled by the two must be equal for the jet to catch up to the plane, hence:

v1 * t1 = v2 * t2

But we know that:

t1 = t2 + 1

Therefore:

180 (t2 + 1) = 330 t2

180 t2 + 180 = 330 t2

150 t2 = 180

t2 = 1.2 hours

 

<span>Therefore the jet can catch up to the plane after 1.2 hours it takes off.</span>

4 0
2 years ago
A designer is creating various open-top boxes by cutting four equally-sized squares from the corners of a standard sheet of 8.5
Oxana [17]

Answer:

L(x) = 11 - 2x

W(x) = 8.5 - 2x

V(x) = 4x³ - 39x² + 93.5x

Step-by-step explanation:

If a square of x sides length is cut from each corner of the sheet, then it meas the length and width of the box a shortened by x inces from each side, giving a total subtraction of 2 times x inches.

FORMULA FOR LENGTH:

Since, Length is the bigger side of the box. Therefore, it will be taken on 11 inches side of the paper:

<u>L(x) = 11 - 2x</u>

FORMULA FOR WIDTH:

Since, width is the smaller side of the box. Therefore, it will be taken on 8.5 inches side of the paper:

<u>W(x) = 8.5 - 2x </u>

FORMULA FOR VOLUME:

Volume is the product of length, width and time:

V(x) = L(x)*W(x)*H(x)

Height must be equal to the side folds which are equal to length of the side of square = x:

H(x) = x

Therefore,

V(x) = (11 - 2x)(8.5 - 2x)(x)

V(x) = (93.5 -22x -17x + 4x²)(x)

<u>V(x) = 4x³ - 39x² + 93.5x</u>

8 0
3 years ago
Simplify.<br><br> 17y(2)<br><br> 19y<br> 172y<br> 34y<br> 19 + y
elena-14-01-66 [18.8K]

17y(2)=(17)(2)(y)=34y

5 0
3 years ago
Read 2 more answers
A kite is flying 70 feet above the ground and is attached to a string tied to a stake on the ground. The angle of elevation form
frozen [14]
If you draw a diagram of this, your given values of the resulting triangle give you the sides opposite and adjacent of the angle. The formula that uses these sides is tangent.

The tangent of an angle is equal to the ratio of the opposite side over the other non-hypotenuse side (adjacent).

Therefore;

tan(40)=70/x
0.83909963117=70/x
0.83909963117x=70
x=70/0.83909963117
x=83.4227514823

Where x is the length of the string in feet.
3 0
3 years ago
Solve the following proportion for u.
IrinaVladis [17]

Answer:

11.6666667 u / (5 u)

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Answer the question
    14·1 answer
  • Use the relationship to predict the cost of a 20 oz bag of coffee
    12·1 answer
  • The sum of four consecutive whole numbers is 54, what are the four numbers
    15·1 answer
  • These are 2-dimenstional shapes. They are made of straight lines, and the shape is “closed” (all the lines connect).
    6·2 answers
  • What is 3 and 8 tenths as a decimal
    12·1 answer
  • 0.75,1/2,0.4, and 1/5 from least to greatest
    13·2 answers
  • PLEASEEE HELP ME ILL GIVE BRAINLIEST TO FIRST PERSON WHO ANSWERS
    13·1 answer
  • Crayons come in packs of 25 and markers come in packs of 10. Marcus wants to have the same amount of markers and crayons. What i
    15·1 answer
  • Can someone Help with this question
    13·1 answer
  • Using the figure below, find the area of the circle.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!