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ziro4ka [17]
2 years ago
5

Kailey and Macy paddle a canoe at a rate of 6 miles per hour in still water. They travel downstream for 10 miles, and to their d

istress, they have to paddle back upstream 10 miles because no one was was there to pick them up at the end of their canoe trip. The total trip took 7 hours. Assuming they paddled at the same rate downstream and upstream, how fast was the speed of the water's current in miles per hour? Round your answer to 3 decimal places.
Mathematics
1 answer:
aliya0001 [1]2 years ago
8 0

Answer:3.79

Step-by-step by awnser:

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Tori sold 450 soft pretzels. If she sold them in groups of 15 soft pretzels, how many groups did she sell?. (Whole number only).
geniusboy [140]

Answer:

30

Step-by-step explanation:

450/15

4 0
2 years ago
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A square pyramid is sliced so that the cross section is perpendicular to its base. The cross section intersects the vertex of th
Alik [6]
Question 2. Triangle
5 0
3 years ago
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What is 20 increased 30%.
Reptile [31]
<span>When 20 is increased by 30% of itself 

</span><span>When 20 is added to by (30% OF 20)
</span><span>
20 + (30% x 20)

</span><span>20 + (0.3 x 20) 
</span><span>
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5 0
3 years ago
Can you guys check these :) I’ll give brainleist :)
stiv31 [10]

Answer:

9. No

10. Yes

Step-by-step explanation:

The first one is not, since you have (3, 3) and (3, 9).  In a function, each x maps to a single y.

The second one is since every x appears only once.

8 0
2 years ago
Find the quadratic function that has a vertex at (3,4) and goes through the point (0,13).​
vladimir2022 [97]

Answer:

f

(

x

)

=

−

1

2

x

2

+

3

x

−

1

2

Explanation:

A quadratic function can be written in vertex form as:

f

(

x

)

=

a

(

x

−

h

)

2

+

k

where

(

h

,

k

)

is the vertex and

a

is a constant multiplier.

In our example the vertex

(

h

,

k

)

is

(

3

,

4

)

, so we can write:

f

(

x

)

=

a

(

x

−

3

)

2

+

4

Given that this passes through the point

(

1

,

2

)

, we must have:

2

=

a

(

1

−

3

)

2

+

4

=

4

a

+

4

Subtract

4

from both ends to get:

−

2

=

4

a

Divide both sides by

4

and transpose to find:

a

=

−

1

2

So our quadratic function can be written in vertex form as:

f

(

x

)

=

−

1

2

(

x

−

3

)

2

+

4

We can multiply this out and simplify as follows:

f

(

x

)

=

−

1

2

(

x

−

3

)

2

+

4

f

(

x

)

=

−

1

2

(

x

2

−

6

x

+

9

)

+

4

f

(

x

)

=

−

1

2

x

2

+

3

x

−

9

2

+

4

f

(

x

)

=

−

1

2

x

2

+

3

x

−

1

2

Step-by-step explanation:

PLZ MARK ME BRAINLYIST

4 0
3 years ago
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