All categories

3 years ago

!!! PLEASE HELP RN !!! 3 (4 + 5) - 12 + 2

Mathematics

2 answers:

maksim [4K]3 years ago

6 0

Answer:

Step-by-step explanation:

Add (4 + 5) = 9 then multiply by 3 = 27 - 12 = 15 +2 = 17

iVinArrow [24]3 years ago

5 0

Answer:

$3(4 + 5) - 12 + 2 = 17$

Step-by-step explanation:

$3(4 + 5)$

break it down into PEMDAS

Parenthesis

Exponent

Multiplication

Division

Addition

Subtraction

$3 \times 4 = 12$

$3 \times 5 = 15$

$15 + 12 = 27$

$3(4 + 5) = 27$

move onto your second part

$27 - 12 + 2$

$27 - 12 = 15$

$15 + 2 = 17$

your final part would be to put it all back together with your answer show an.

$3(4 + 5) - 12 + 2 = 17$

You might be interested in

Consider the function f(x)=4x-5. what is the domain value that corresponds to an output of f(x)=11?

erastovalidia [21]

F = 4

if f(x)=11, you must always try and get x alone, so f = (11+5)/4, and this simplifies to 4.

8 0

3 years ago

-5/0 Five over negative zero

ohaa [14]

Answer:

incorrect this is negative five over zero.

Step-by-step explanation:

but both are equal with the same value -5/0 = 5/-0 = -1

Have a great day!

4 0

3 years ago

Write the ratio of corresponding sides for the similar triangles and reduce the ratio to lowest terms.

Schach [20]

Answer:

ANSWER is B. look at the sides and simplified.

5 0

3 years ago

Someone answer this questions

Licemer1 [7]

Answer: its 64

Step-by-step explanation:

5 0

3 years ago

ABC and EDC are straight lines. EA is parallel to DB. EC = 8.1 cm. DC = 5.4 cm. DB = 2.6 cm. (a) Work out the length of AE. cm (

harkovskaia [24]

By applying the knowledge of similar triangles, the lengths of AE and AB are:

a. $\mathbf{AE = 3.9 $ cm}\\\\$

b. $\mathbf{AB = 2.05 $ cm} \\\\$

See the image in the attachment for the referred diagram.

The two triangles, triangle AEC and triangle BDC are similar triangles.
Therefore, the ratio of the corresponding sides of triangles AEC and BDC will be the same.

This implies that:

AC/BC = EC/DC = AE/DB

Given:

$EC = 8.1 $ cm\\\\DC = 5.4 $ cm\\\\DB = 2.6 cm\\\\AC = 6.15 $ cm$

a. Find the length of AE:

EC/DC = AE/DB

Plug in the values

$\frac{8.1}{5.4} = \frac{AE}{2.6}$

Cross multiply

$5.4 \times AE = 8.1 \times 2.6\\\\5.4 \times AE = 21.06$

Divide both sides by 5.4

$AE = \frac{21.06}{5.4} = 3.9 $ cm$

b. Find the length of AB:

$AB = AC - BC$

AC = 6.15 cm

To find BC, use AC/BC = EC/DC.

Plug in the values

$\frac{6.15}{BC} = \frac{8.1}{5.4}$

Cross multiply

$BC \times 8.1 = 6.15 \times 5.4\\\\BC = \frac{6.15 \times 5.4}{8.1} \\\\BC = 4.1$

Thus:

$AB = AC - BC$

Substitute

$AB = 6.15 - 4.1\\\\AB = 2.05 $ cm$

Therefore, by applying the knowledge of similar triangles, the lengths of AE and AB are:

a. $\mathbf{AE = 3.9 $ cm}\\\\$

b. $\mathbf{AB = 2.05 $ cm} \\\\$

Learn more here:

brainly.com/question/14327552

3 0

3 years ago