Will give brainliest if you answer and show explanation.

Mathematics

1 answer:

antoniya [11.8K]3 years ago

4 0

Answer:

15/19 is a rational number. this is because irrational numbers cannot be represented by fractions

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HELP PLEASE PLEASE HELP URGENT PLEASE HELP

iogann1982 [59]

Answer:

yzx and tus

Step-by-step explanation:

6 0

2 years ago

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Find the value of x, given cos 0 = 0.4<br><br><br><br> PLEASE HELP!!!!!! And explain if possible

elena-14-01-66 [18.8K]

Answer:

$x=30$

Step-by-step explanation:

For each right-angled triangle:

$\cos\theta=\frac{cathetus \ adjacent \ \theta}{hypotenuse}$

Because $\cos \theta=0.4, \ \ cathetus\ adjacent \ \theta \ = \ 12, \ \ \ hypotenuse=x$

we have an equation

$0.4=\frac{12}x$

multiplying both sides by x, we get $0.4x=12$

dividing both sides by 0.4 and $x=\frac{12}{0.4}$

using calculator, we divide 12 by 0.4

and finally x=30

8 0

3 years ago

Roberto wants to estimate the answer to this problem to see if his answer is reasonable.

marusya05 [52]

5849 rounded to the nearest hundred
- The number '8' is located in the hundreds place
- Since there is a '4' in the tens place, it's telling number '8' to stay the same
5849 ⇒ 5800

2621 rounded to the nearest hundred
- The number '6' is located in the hundreds place
- Since there is a number '2' in the tens place, it's telling number '6' to stay the same
2621 ⇒ 2600

Answer: 5800 - 2600

6 0

3 years ago

a 64 gallon tank contains 45 gallons of oil. How many gallons are removed if 4/5 of this quantity is sold?

skad [1K]

4/5 is already simplified so its going to be 4/5 or .45

6 0

3 years ago

Please help will give brainliest

garri49 [273]

Answer:

$b = 17$