3 years ago

Which angles are complementary?

Mathematics

1 answer:

Law Incorporation [45]3 years ago

3 0

It is B because those two angles make it complementary

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The ground temperature at an airport is 10 °C. The temperature decreases by 5.4 °C for every increase of 1 kilometer above the g

Paraphin [41]

The temperature outside a plane flying at an altitude of 5 kilometers is -17°C.

Given that,

The ground temperature at the airport is 10 °C.
The decrease in temperature is 5.4°C for each & every rise in 1 kilometer.

Based on the above information, the temperature outside should be

The decrease in the temperature should be

= 5.4×5

= 27°C

Now the final temperature is

= 10 - 27

= -17°C

Therefore we can conclude that the temperature outside a plane flying at an altitude of 5 kilometers is -17°C.

Learn more: brainly.com/question/20459283

5 0

3 years ago

What is the value of the expression below when y = 7?<br> 2y^2 + 9y + 2<br><br><br> Help me!!!!!

Flauer [41]

Answer:

163

Step-by-step explanation:

$2*(7^{2}) +9(7)+2$

$2*(49)+9(7)+2$

$98+63+2$

$=163$

8 0

4 years ago

Does anybody know what 8(11-3) -2(4+1) is

lina2011 [118]

Its 58................

8 0

3 years ago

Read 2 more answers

Solve the quadratic. x^2+8x+3=0

Reil [10]

Factor
find wht 2 numbers add to 8 and multiply to 3
none do

use quadratic formula which can be used when
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^{2}}-4ac }{2a}$

a=1
b=8
c=3

x= $\frac{-8+/- \sqrt{8^{2}-4(1)(3)} }{2(1)}$
x= $\frac{ -8+/- \sqrt{64-12} }{2}$
x= $\frac{ -8+/- \sqrt{52} }{2}$
x= $\frac{ -8+/- 2 \sqrt{13} }{2}$
x= $-4+/- \sqrt{13}$

x= $-4+ \sqrt{13}$ or x= $-4- \sqrt{13}$
aprox x=-7.60555 or x=-0.394449

6 0

3 years ago

Read 2 more answers

What x what gives me 49 but when you add it it gives me 14

Scilla [17]

7 because 7 x 7 is 49 but if you add 7 and 7 it gets to 14 7 is the answer
so if you do a different number you will be wrong

3 0

3 years ago