All categories

3 years ago

2(4)+ 4(1)= 12 Solution

Mathematics

2 answers:

sergejj [24]3 years ago

8 0

The answer is 12=12 I think

grin007 [14]3 years ago

5 0

2*4+4*1=12
8+4=12

2times 4 is 8 + 4 times 1 is 4 which if you add those up you will get 12

You might be interested in

If you add 21 to my number and then multiply the result by 3, you will get 84 more than two-thirds of my number. Find my number.

Ksivusya [100]

Based on the calculations, the unknown number is equal to $\frac{-45}{7}$

Let the unknown number be x.

<h3>How to find an unknown number:</h3>

Translate the word problem into an algebraic expression, we have;

Adding 21 to the unknown number:

$21 +x$

Multiplying the result by 3:

$3\times (21+x)$

84 more than two-thirds of the unknown number:

$\frac{2x}{3} +84$

Equating the equations, we have:

$3\times (21+x) = \frac{2x}{3} +84\\\\43+3x=\frac{2x}{3} +84$

Cross-multiplying, we have:

$43+3x=\frac{2x}{3} +84\\\\129+9x=2x+84\\\\9x-2x=84-129\\\\7x=-45\\\\x=\frac{-45}{7}$

Read more on word problems here: brainly.com/question/13170908

5 0

3 years ago

Building A is 400 feet tall and Building B is 300 feet tall. Johnny is standing in between the two building. The angle of elevat

Free_Kalibri [48]

Answer:

389 feets apart

Step-by-step explanation:

Given that:

Building A

Height = 400feets

Angle of elevation = 70°

Building B:

Height = 300 feets

Angle of elevation = 52°

Distance from the foot of building A to where Jonny is standing = x (see attached picture)

Using trigonometry :

Tanθ = opposite / Adjacent

Tan 70 = 400/ x

2.7474774x = 400

x = 145.58809 feets

Distance from the foot of building B to where Jonny is standing = y (see attached picture)

Using trigonometry :

Tanθ = opposite / Adjacent

Tan 52 = 300/ y

1.2799416y = 300

y = 145.59

y = 234.38568 feets

x + y = distance between the two buildings

(145.58809 + 234.38568) feets

= 379.97377

= 380 feets apart

5 0

3 years ago

A sequence of digits has the property that each pair of successive digits, taken in the order written, forms a decimal numeral r

alex41 [277]

Answer:

Concept: Mathematical Sequences

Let An be 99 a double digit multiple
The sequence is finite.
Finite= restricted and not bounded to positive infinity
By that logic the last possible digit is 999999999999999999999999999999999999999999999

7 0

3 years ago

A large scale weight 3000 pound 5 ounce, which of the following scales weigh in ounces?

aleksklad [387]

Answer:

1 pound =

16 ounces

Step-by-step explanation:

3000×16 + 5 = 48005 ounces

4 0

4 years ago

The ratio of students wearing sandals to those wearing sneakers is 5 : 1. If there are 30 students in the class, and all of them

mart [117]

Answer:

Step-by-step explanation:

6 0

3 years ago