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Paraphin [41]
2 years ago
14

Can someone help me with this

Mathematics
1 answer:
antiseptic1488 [7]2 years ago
4 0

Answer:

[9 - 2 = 7 x 4] = {28}

[ ] =expression { } answer

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Starting at home, Nadia traveled uphill to the grocery store for 30 minutes at just 4 mph. She then traveled back home along the
seraphim [82]

Answer: 6\ mph

Step-by-step explanation:

Let d be the distance from Nadia's home to the grocery store.

Given : Nadia traveled uphill to the grocery store for 30 minutes at just 4 mph.

∵ 1 hour = 60 minutes.

Then, 30\text{ minutes}=\dfrac{30}{60}=0.5\text{ hour}

Since \text{Distance = Speed * Time}

Then,  d=4\times0.5=2\text{ miles}

Also, She then traveled back home along the same path downhill at a speed of 12 mph.

Then, Time taken to travel back home = \dfrac{\text{Distance}}{\text{Speed}}=\dfrac{2}{12}=\dfrac{1}{6}\text{ hours}

Average Speed =\dfrac{\text{Total distance}}{\text{Total time taken}}

=\dfrac{2+2}{0.5+\dfrac{1}{6}}\\\\=\dfrac{4}{\dfrac{3+1}{6}}=\dfrac{4\times6}{4}=6\ mph

Hence, her average speed for the entire trip from home to the grocery store and back = 6\ mph

8 0
4 years ago
Is (3, 4) a solution of y < 4x – 2 ?
telo118 [61]

Answer:

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A businessman was comparing his company's profits for two consecutive months. In November, n, were 0.04 thousand dollars more th
Firdavs [7]
N and d are both numbers of thousands of dollars.
Thus, if n = 1, that means $1000.

Here n = d + 0.4.
Note that in C, n+0.04=n is completely wrong.
Similarly, in D, d = 0.04 = n is completely wrong.
The "combined profit amount" for Nov. and Dec. is n + d = 3.15.

Only A matches this info.  Your answer is A.
5 0
3 years ago
If z = 13 - 71, what is the value of z?<br> BE<br> O 6<br> O 2/30<br> 218<br> O 20
Llana [10]

Answer:

z=-58 bc 13-71= -58

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Two factors of 30 add up to 9. What are they?
Komok [63]
<span>factors of 30 are numbers by which 30 is divisible.
if we list out 30 as a product of factors 30 = 1 x 30
30 = 2 x 15
30 = 3 x 10
30 = 5 x 6
therefore all the factors of 30 are - 1,2,3,5,6,10,15,30
the numbers 3 and 6 add up to 9.
therefore the 2 factors that add up to 9 are 3 and 6</span>
5 0
4 years ago
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