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3 years ago

How many thirds are in7

Mathematics

1 answer:

Tanya [424]3 years ago

3 0

There are 21 thirds in 7.

21/3 = 7

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Two Cars Start at the Same Point and travel in the Same Direction at the average speeds of 70 miles per hour, and 40 miles per h

cestrela7 [59]

Answer:

You can check it by solving it in your head. They are separating at the rate of 55-40 or 15 miles per hour. So in 1 hour or 60 minutes they'll be 15 miles apart, so in 20 minutes they'll be 5 miles apart, so in 40 minutes they'll be 10 miles apart. So it has to be 40 minutes.

Step-by-step explanation:

55t-40t=10

15t=10

15t/15=10/15

2/3

40 Minutes

3 0

3 years ago

Please help!!!!! ASAP!!!

nika2105 [10]

That's just the distance between 2 points
the distance between (x1,y1) and (x2,y2) is
$D= \sqrt{(x2-x1)^2+(y2-y1)^2}$

we can find the distance between S and Q or P and R

S and Q is (0,0) and (a,b)

$D= \sqrt{(a-0)^2+(b-0)^2}$
$D= \sqrt{a^2+b^2}$

distance between P and R is between(0,b) and (a,0)
$D= \sqrt{(a-0)^2+(0-b)^2}$
$D= \sqrt{(a)^2+(-b)^2}$
$D= \sqrt{a^2+b^2}$

$\sqrt{a^2+b^2} = \sqrt{a^2+b^2}$
so the lengths of diagonals are congruent

7 0

4 years ago

If m ≤ f(x) ≤ M for a ≤ x ≤ b, where m is the absolute minimum and M is the absolute maximum of f on the interval [a, b], then

agasfer [191]

Answer:

smaller value is 1.2

larger value is 6

Step-by-step explanation:

$f(x)=\frac{3}{1+x^{2} }$

when x=a=0, one has

$f(0)=\frac{3}{1+0^{2} } \\f(0)=3$

now, when x=b=2, one has

$f(2)=\frac{3}{1+2^{2} } \\f(2)=\frac{3}{5}$

Therefore, the absolute minumun is

$m=\frac{3}{5}$

and the absolute maximun is

$M=3$

The approximation to the integral is

$\frac{3}{5}(2-0)\leq \int\limits^2_0 {f(x)} \, dx \leq 3(2-0)$

hence

$\frac{3}{5}(2)\leq \int\limits^2_0 {f(x)} \, dx \leq 3(2)\\\frac{6}{5} \leq \int\limits^2_0 {f(x)} \, dx \leq 6\\1.2 \leq \int\limits^2_0 {f(x)} \, dx \leq 6$

7 0

4 years ago

The Eiffel Tower in Paris, France is 1063 feet tall. If you took an elevator 3/4 the way up the tower, how far from the ground w

icang [17]

Answer: 797 feet 3 inches

Step-by-step explanation:

$\frac{3}{4} *1063=\frac{3189}{4} =797.25$

6 0

2 years ago

Can you explain how to do this correctly?

iVinArrow [24]

8/x-7=7/2
16=7(x-7) cross multiply
16=7x-49
-7x=-49-16
-7x=-65 divides each side by -7
-7x/7=-65/7
X=65/7
Alternative form
X=92/7
Which is 1st options in your questions.

Hope this helps!

7 0

3 years ago