What's 4/5×5/8 please I really need help with this one

Answers

Answer 1

Answer: $(4)/(5)$ × $(5)/(8)$

First, apply this rule: $(a)/(b)$ × $(c)/(d)$ = $(ac)/(bd)$ / Your problem should look like: $(4x5)/(5x8)$
Second, simplify 4 × 5 to 20. / Your problem should look like: $(20)/(5x8)$
Third, simplify 5 × 8 to 40. / Your problem should look like: $(20)/(40)$
Fourth, simplify. / Your problem should look like: $(1)/(2)$

Answer as fraction: $(1)/(2)$
Answer as decimal: 0.5

Answer 2

Answer: $(4)/(5) * (5)/(8) = (4:2)/(5:5)* (5:5)/(8:2) \n\n~~~~~~~=2* (1)/(4) \n\n~~~~~~~= (2)/(4)$

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For the values a = 2.9 which is a leg of a right triangle, and value c = 4.2, which is the hypotenuse, find the length of the other leg, b, to the nearest tenth.A. 2.9

B. 3.0

C. 2.8

D. 1.3

Answers

Given:
a = 2.9
c = 4.2
b = ?

Right triangle. Use Pythagorean Theorem.
a² + b² = c²
b² = c² - a²
b² = 4.2² - 2.9²
b² = 17.64 - 8.41
b² = 9.23
b = √9.23
b = 3.04 Choice B.

The length of the other leg is 3.0

The right one is B) 3.0, as you know $a^(2) + b^(2) = c^2$ due to Pythagoras' theorem. So $b= √(c^2 - a^2)$ . Put the right numbers into the formula and you get 3.0. That is B.

You tell your parents that you will pay 15% tip for dinner. the bill was $162.39 You have $25

Answers

you need to pay $24.

Write the given expression as the sine of an angle
sin40cos20+cos40sin20

Answers

It's $sin(40+20)=sin60=\frac{\sqrt3}2$

Yo sup??

The given expression is in the form

sinAcosB+cosAsinB

we know that

sin(A+B)=sinAcosB+cosAsinB

therefore

sin40cos20+cos40sin20=sin(40+20)

=sin60

=√3/2

Hope this helps.

What is the circumference of a circle with the radius of 8.2 (round to the nearest hundredth)?

Answers

C=2piR. C=2(3.14)(8.2). C=6.28(8.2). C= 51.496. But we have to round to the nearest hundredth which is the second place to the right of a decimal. So now C=51.50 (since 49+1=50) :) hope this helps

Give the digits in the ones place and the hundredths place.
53.19

Answers

The ones place is 3 and the hundredths place is 9. Always remember, on the left side of the point starts with ones followed be tens, but in the right side of the point it starts with tenths followed by hundredth.

Caroline has 16 marbles 1\8 of them are blue how many of Caroline's marbles are blue

Answers

1/8 of 16 is 2 . i hope it helps.

there are 2 marbles because if you multiply 1/8 x 2 you get 2/16

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