All categories

2 years ago

PLEASE HELP I really need help with it:/

Mathematics

2 answers:

Luda [366]2 years ago

7 0

Answer:

q = 14

Step-by-step explanation:

39 + (4q - 5) = 90°

<u>Solution:</u>

34 + 4q = 90°
=> 4q = 90 - 34
=> 4q = 56
=> q = 56/4
=> q = 14

Hence, the value of q is 14.

elena-s [515]2 years ago

3 0

Complementary angles have sum 90°

$\\ \tt\hookrightarrow 39+4q-5=90$

$\\ \tt\hookrightarrow 4q+34=90$

$\\ \tt\hookrightarrow 4q=90-34$

$\\ \tt\hookrightarrow 4q=56$

$\\ \tt\hookrightarrow q=14$

You might be interested in

1. If we have 3 babies what is the probability they’re going to be all boys?

adelina 88 [10]

I don’t knowww mannnnnn

5 0

2 years ago

If y varies directly as x, and y is 12 when x is 1.2, what is the constant of variation for this relation?

laila [671]

If you multiply 12 by 0.1, you get 1.2. To write this as a function you would say y is x multiplied by 0.1.
y=0.1x

6 0

3 years ago

Read 2 more answers

What is 1/8 in percentage? (Percentage is out of 100)

Marizza181 [45]

Answer:

I think this answer is 12.5

8 0

3 years ago

Read 2 more answers

24. a rate in which the second quantity. In the comparison is one unit.

natima [27]

24. unit rate
25. ?
26. surface area
27. trial
28. supplementary angles
29. variable
30. unit conversion ?

3 0

3 years ago

Read 2 more answers

A fossilized leaf contains 18% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as

Sati [7]

Answer: The age of the fossilized leaf is 13829 years.

Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = $\frac{18}{100}\times 100=18$

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.693}{5600years}=0.00012years^{-1}$

b) for finding the age

$t=\frac{2.303}{0.00012}\log\frac{100}{18}$

$t=13829years$

The age of the fossilized leaf is 13829 years.

7 0

3 years ago