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3 years ago

How to do order of operations and evaluating expressions

Mathematics

2 answers:

Reil [10]3 years ago

7 0

PEMDAS

Parentheses, exponents, multiplication, division, addition, subtraction.

Andreas93 [3]3 years ago

4 0

Order of operations is parenthesis first then multiplicate and divide then add and subtract

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Can anyone PLEASE HELP ME WITH THIS QUESTION?

Ipatiy [6.2K]

Answer: x=34

Step-by-step explanation:

straight lines = 180

triangles = 180

180-145 = 35

111+35=146

180-146=34

4 0

3 years ago

each of equal sides of an isosceles triangle is 4cm greater than its height .If the base of triangle is 24 cm ,calculate the per

Montano1993 [528]

<h3>Answer:-</h3>

192 cm²

<h3>Step by step explanation :-</h3>

Let us take the height be x , then its side = x + 4. Now half of base will be 12 cm .

According to Pythagoras Theorem :-

=> base² + perpendicular ² = hypontenuse ²

=> 12² + x² = (x+4)²

=> 144 + x² = x² + 16 + 8x

=> 8x = 144-16

=> 8x = 128

=> x = 128/8

=> x = 16 cm .

Hence the height of ∆ is 16 cm .So the area will be half the product of base and altitude.

= 1/2 * 16 cm * 24cm .

= 192 cm²

<h3>★ Hence the area of the triangle is 192 cm² .</h3>

8 0

3 years ago

Find m∠B. Put the answer below. m∠B =

kkurt [141]

$\huge\underline{Answer -}$

we know that

$tan\:θ \:= \frac{perpendicular}{base}\\$

thus in the question ,

$\tan(B) = \frac{perpendicular}{base} \\ \\ \tan(B) = \frac{\cancel{24} \sqrt{3} }{\cancel{24}} = \sqrt{3} \\ \\ \tan(60) = \sqrt{3}$

therefore , m∠B = 60°

hope helpful~

8 0

2 years ago

As part of a community-service project, a local club has decided to paint 864 walls across town. The club has 36 volunteers. If

tankabanditka [31]

Answer:

24 walls per volunteers

Step-by-step explanation:

given that there are 864 walls and that there are 36 volunteers

if the walls are divided evenly over the 36 volunteers,

each volunteer would paint,

= 864 walls ÷ 36 volunteers

= 24 walls per volunteers

4 0

4 years ago

What is the product of x+2 and x-7? Write your answer in standard form.

Leto [7]

X^2-5x-14
It is the correct answer I think

5 0

3 years ago