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4 years ago

Help please!!!!!!! plz

Mathematics

2 answers:

defon4 years ago

8 0

The graph to pick is D because it's decreasing by one and starts at 10

HACTEHA [7]4 years ago

5 0

First one is D and it will last 10 hours
second one is Catalina walks faster
Third one is Pizzeria L makes more money

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What is the cubed root of 275÷7

almond37 [142]

Step-by-step explanation:

It's an irrational number.

$\sqrt[3]{275:7}=\sqrt[3]{\dfrac{275}{7}}=\dfrac{\sqrt[3]{275}}{\sqrt[3]{7}}=\dfrac{\sqrt[3]{275}\cdot\sqrt[3]{7^2}}{\sqrt[3]{7}\cdot\sqrt[3]{7^2}}=\dfrac{\sqrt[3]{275\cdot49}}{\sqrt[3]{7\cdot7^2}}\\\\=\dfrac{\sqrt[3]{13475}}{\sqrt[3]{7^3}}=\dfrac{\sqrt[3]{13475}}{7}=\dfrac{1}{7}\sqrt[3]{13475}$

3 0

3 years ago

The question is in the picture

snow_lady [41]

Answer:men=152 women=76 children=38

Step-by-step explanation:

men+women+children=266
men=4*children
women=2*childrens
so let say x represent the numebers of children the equatin becomes: 4x+2x+x=266
solve for x =38 so the numbers of children is 38
men=4*38=152
women=2*38=76

5 0

3 years ago

Trains headed for destination A arrive at the train station at 15-minute intervals tarting at 7am, where as trains headed for de

grandymaker [24]

Answer: a.) 2/3 ; b.) 7/12

Step-by-step explanation:

Given the following details :

Destination A trains arrives at station at 15 minutes interval starting from 7am

Destination B trains arrives at station at 15 minutes interval starting from 7.05am

A.) if a passenger arrives at station uniformly between 7am and 8am and gets on first train. What proportion of time does the passenger leave from destination A?

To leave for destination A. The passenger has to arrive before train to A departs and after train to B leaves.

Train to B leaves, starting at at 7.05 a.m and at interval of 15 minutes

Train to A leaves at 7.00 am and at interval of 15 minutes.

Therefore,

(Train B departs - train A arrives) (between 7 to 8am)

(7.05 - 7.15) + (7.20 - 7.30) + (7.35 - 7.45) + (7.50 - 8.00) = 40 minutes

Total time = 7.00 - 8.00 = 60 minutes

(40 ÷ 60) = 2/3 or 0.667

B.) If passenger arrives uniformly between 7.10am - 8:10am

(7.10 - 7.15) + (7.20 - 7.30) + (7.35 - 7.45) + (7.50 - 8)

5 + 10 + 10 + 10 = 35

35/60 = 7/12 or 0.583

8 0

3 years ago

Find the standard form of the equation of the parabola with a focus at (7, 0) and a directrix at x = -7.

Alecsey [184]

Answer:

y^2 = 28x

Step-by-step explanation:

Since the directrix is horizontal, use the equation of a parabola that opens left or right.

(y−k)^2 = 4p(x−h)

Find the vertex.

(0,0)

Find the distance from the focus to the vertex.

p = 7

Substitute in the known values for the variables into the equation

(y−k)^2 = 4p(x−h).

(y−0)^2 = 4(7)(x−0)

Simplify.

y^2 = 28x

7 0

3 years ago

Read 2 more answers

PLEASE ANSWER FASTTTT !

xz_007 [3.2K]

Answer:

A' (-3, 3), B' (-6, 5), C' (-2, 1)

Step-by-step explanation:

These points represent the reflection of the image over the y-axis.

7 0

4 years ago