All categories

3 years ago

Please help will give brainliest

Mathematics

2 answers:

IrinaVladis [17]3 years ago

7 0

Answer:

c=578

Step-by-step explanation:

To solve this we can use the law of sines.

Firstly, we need to find the measure of ∠C

As there are 180° in a triangle, we can find the difference between this and the measures of ∠A and ∠B

$180-70-52=58$

∠C=58°

Now we can setup our law of sines

$\frac{c}{sin(58)} =\frac{640}{sin(70)} \\\\c=\frac{640sin(58)}{sin(70)} \\\\c=577.58\\\\c=578$

lianna [129]3 years ago

5 0

Answer:

(this might be wrong but if your desperate) 518

Step-by-step explanation:

1. 70+52=122

2. 640-122= 518

You might be interested in

35 + (45+ 25) = (35 +45) +25 which property is this

Dafna1 [17]

Answer:

Associative Property

Step-by-step explanation:

Commutative: 35+(45+25) = (25+45)+35

Associative: 35+(45+25) = (35+45)+25

Distributive: cannot be done

hope this helps!

8 0

3 years ago

Becky tells her friend about the Rule of 72 and her friend immediately

yaroslaw [1]

Answer:

a. the investment earns 4%

b. yes

Step-by-step explanation:

The "rule of 72" says that an investment earning compound interest at x% will double in value after 72/x years. That is, ...

f(x) = 72/x

We interpret f(4) to mean Becky's friend is interested in the doubling time for an investment that earns 4% interest.

Using the above formula, ...

f(4) = 72/4 = 18

The friend's math is correct.

3 0

2 years ago

Help asap plz ill give a gold medal. the label on cars antifreeze claims to protect the car between -30celsius and 130celsius. t

irga5000 [103]

The inequality would start out looking like this:
$-30\ \textless \ \frac{5}{9} (F-32)\ \textless \ 130$
Now it's just a matter of solving the inequalities simultaneously. Get rid of the fraction by multiplying everything by 9:
$-270\ \textless \ 5(F-32)\ \textless \ 1170$
Then distribute the 5 into the parenthesis:
$-270\ \textless \ 5F-160\ \textless \ 1170$
Now add 160 everywhere:
$-110\ \textless \ 5F\ \textless \ 1330$
and finally divide everything by 5:
-22<F<266

4 0

3 years ago

How is 9.746 x 1013 written in standard form?

sammy [17]

Answer:

9872.698 is 9.746 x 1013 in standard form

4 0

4 years ago

Describe and correct the error made in finding the product. <br><br> Please explain what's wrong

qaws [65]

Okay, it's wrong because they forgot to do -2 times 3x.
The correct answer is $3^{2}$ -2x-8
Hope i got is correct!

5 0

3 years ago