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Aneli [31]
3 years ago
13

anna is biking at x miles per hour. sara bikes at 10 mi/h. which expression represents the average of anna’s and sara’s speeds?

Mathematics
1 answer:
vfiekz [6]3 years ago
8 0

Step-by-step explanation:

It is given that,

Speed of Anna is x miles/hour

Speed of Sara is 10 mi/h

We need to find an expression that represents the average of Anna's and Sara's speeds. Average of two objects is given by :

v=\dfrac{v_1+v_2}{2}

ATQ,

v=\dfrac{x+10}{2}

The above expression represents the average speed of Anna and Sara.

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You can multiply the price of the journals with the answer choices and add that amount with how much his backpack cost and that'll give you your final cost.


<h2>Answer: C. 4 notebooks</h2>
5 0
3 years ago
Why does a rectangle with different side lengths have only 2 lines of symmetry?
ICE Princess25 [194]

Answer:

C. all four angles are congruent, and opposite sides are congruent for a horizontal and vertical line of reflection

Step-by-step explanation:

A. isn't correct because all four sides aren't congruent, only the pair of opposite sides are congruent. Sense only opposite side are congruent you can only reflect the opposite sides onto each other and not diagonally meaning B. and D. are incorrect leaving C. all four angles are congruent, and opposite sides are congruent for a horizontal and vertical line of reflection as the correct answer

5 0
2 years ago
Find the number of turns or bumps in the graph of the function f(x) = x² - 25
Papessa [141]

Answer:

1 turn

Step-by-step explanation:

this is what the graph would look like:

4 0
1 year ago
Find xy if x + y=3, x^2 + y^2 = 5
Vesna [10]

Answer:

mark me

Step-by-step explanation:

x+y=3

x=3-y

putting the value of x

in this

x²+y²=5

(3-y) ²+y²=5

9-6y+y²+y²=5

2y²-6y+9-5=0

2y²-6y+4=0

2y²-4y-2y+4=0

2y(y-2)-2(y-2)=0

(2y-2) (y-2) =0

2y-2=0 or y-2=0

y=1 or y=2

so x=2 or 1

so x×y=2×1 or 1×2=2

I HOPE THIS WILL HELP YOU MARK ME BRAINLIEST

8 0
2 years ago
Evaluate 8 into 5 /-4<br> i will give you Brainliest<br> 15 points
vlabodo [156]
It’s -10
Explanation: 8 x 5= 40
40/-4= -10
3 0
2 years ago
Read 2 more answers
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