Martina walked 3/4 of a mile in 2/5 of an hour. At this rate, how far can Martina walk in one hour?

Answers

Answer 1

Answer: 1.875 miles in one hour

Answer 2

Answer: martina can walk 1.875

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Write -90.85 as a mixed number in simplest form.

Answers

Well, -90 would obviously be the whole number.
So, $-90 (unknown)/(unknown)$ .
And now, 85 would be a part, so that would be the numerator. The last number of 85, 5, is in the hundredth place, so the denominator would be 100.

Which would get us, $-90 (85)/(100)$

Now simplify.
5 can go into both numbers.

85/5 = 17
100/5 = 20

So you get $(17)/(20)$

Your final answer is $-90 (17)/(20)$

-90.85 = -90 85/100
-90 85/100 = -90 17/20

What is the kinetic energy of a jogger with a mass of 65.0 kg traveling at a speed of 2.5 m/s

Answers

The kineticenergy describes the energyexhibited by a body due to its motion.The kineticenergy of the jogger is 203.125 Joules

Recall :

Kineticenergy=0.5mv²
Mass,m=65kg
Velocity,V=2.5m/s

Hence, the kinetic energy of the jogger can be calculated thus :

K. E = 0.5 × 65 × 2.5²

K. E = 0.5 × 65 × 6.25

K. E = 203.125Joules

Therefore, thekineticenergyof the jogger is 203.125joules

Learn more : brainly.com/question/18405415

KE = 1/2mv^2

KE = 1/2(65)*2.5^2
KE = 32.5*2.5^2

KE = 203.125 Joules

The kinetic energy is equal to 203.125 J.

A shop has 15% sale. Originally a computer cost £275. How much does the computer cost in the sale?

Answers

Answer:

= 233.75

Step-by-step explanation:

To find the discount, we multiply the original price by the percent off

discount = 275* .15

= 41.25

To get the sale price, take the original price and subtract the discount

sale price = 275-41.25

= 233.75

Round 7.5905 to the nearest..
0.1 =

Answers

Answer:

The answer is 7.6.

Step-by-step explanation:

X^2+4x=7 using the quadratic formula?

Answers

when you have
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^(2)-4ac} }{2a}$

1x^2+4x=7
minus 7
1x^2+4x-7=0
a=1
b=4
c=-7
sub

x= $\frac{-4+/- \sqrt{4^(2)-4(1)(-7)} }{2(1)}$
x= $(-4+/- √(16+28) )/(2)$
x= $(-4+/- √(44) )/(2)$
x= $(-4+/- 2√(11) )/(2)$
x= $-2+/- √(11)$

x= $-2+ √(11)$ or $-2- √(11)$

What is the
solution to
this system
of equations?

Answers

Answer:

(5, -3)

Step-by-step explanation:

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