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katrin [286]
2 years ago
14

Pls answer it i will give brainly and no links pls ty worth 29 points

Mathematics
2 answers:
Mariulka [41]2 years ago
7 0
I think the answer is 7. 5 miles

Serga [27]2 years ago
4 0

Answer:

7.5mph (1 d.p)

Step-by-step explanation:

First, I worked out what a third of an hour was to match the unit mph.

60 minutes / 3 = 20 mins

A third of an hour is 20minutes so two thirds of an hour is 40 minutes.

But as we know, one third as a decimal is 0.33(reccuring) so therefore two thirds as a decimal is 0.66, which we need to use.

Now, we need to remember the equation. Speed = distance / time

Place the facts we already know in place.

speed = 5miles / 0.66 (using a calculator.)

speed = 7.5mph (1 d.p)

Hope this helps and you have a good day!

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5 divide 15x 15squared
Goryan [66]

Answer:

75

Step-by-step explanation:

(5 /15) x (15 squared = 75

4 0
2 years ago
A rectangular poster is to contain 722 square inches of print. the margins at the top and bottom of the poster are to be 2 inche
Delvig [45]
Let
x ----------> the height of the whole poster
<span>y ----------> the </span>width<span> of the whole poster
</span>
We need to minimize the area A=x*y

we know that
(x-4)*(y-2)=722
(y-2)=722/(x-4)
(y)=[722/(x-4)]+2

so
A(x)=x*y--------->A(x)=x*{[722/(x-4)]+2}
Need to minimize this function over x > 4

find the derivative------> A1 (x)
A1(x)=2*[8x²-8x-1428]/[(x-4)²]

for A1(x)=0
8x²-8x-1428=0
using a graph tool
gives x=13.87 in

(y)=[722/(x-4)]+2

y=[2x+714]/[x-4]-----> y=[2*13.87+714]/[13.87-4]-----> y=75.15 in

the answer is
<span>the dimensions of the poster will be
</span>the height of the whole poster is 13.87 in
the width of the whole poster is 75.15 in

6 0
3 years ago
A package of 12 pencils cost $0.96. At this rate, how much would 100 pencils cost?
Alexandra [31]

Answer:$8

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Of Bernie's insect collection, 15 out of 25 insects are butterflies. Which of the following is not another way of expressing 15
koban [17]
B is the answer for ur question :D
8 0
3 years ago
Please help only have a minute to answer. NO WORK NESSACARY. Thanks.
Ymorist [56]

Answer is the third one. It is the only answer where all points work in the equation.

Answer: third choice

7 0
3 years ago
Read 2 more answers
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