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3 years ago

A [?] degrees B 43° C 15° What is the measure of A?

Mathematics

1 answer:

alexira [117]3 years ago

6 0

122 degrees. You add both angles and subtract from 180 because all triangles equal 180 degrees

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Six teams are out on the field playing soccer. The teams all have the same number of players. The head coach asked for 2 players

xxMikexx [17]

$6x - 12 = 78 \\ 6x = 90 \\ x = 15$

There are 15 players on each team.

7 0

3 years ago

Solve A=p+prt for r.

Furkat [3]

A = p + prt

The above equation can be solved for “r” in such a way.

Subtract “p” from both sides;

A – p = p + prt – p

A – p = prt

Divide both sides by “p” and “t”;

A/pt – p/pt = prt/pt

A/pt – 1/t = r

3 0

2 years ago

2x + y - z = -8

Andreyy89

Answer:

Multiply row 1 by $\frac{1}{2}$ .

Step-by-step explanation:

The augmented matrix of the system of linear equation is described below:

$\left[\begin{array}{cccc}2&1&-1&-8\\0&2&3&-6\\-\frac{1}{2} &1&1&-4\end{array}\right]$

Where $a_{11} = 2$ , if we need to create $a_{11} = 1$ , we need to multiply row 1 by $\frac{1}{2}$ , that is to say:

$\left[\begin{array}{cccc}1&\frac{1}{2} &-\frac{1}{2} &-4\\0&2&3&-6\\-\frac{1}{2} &1&1&-4\end{array}\right]$

Hence, the correct answer is: Multiply row 1 by $\frac{1}{2}$ .

5 0

2 years ago

What is the square root of -1?<br> -j.<br> -1

Sindrei [870]

Answer:

Its not a real number for the square roots of negative number

its not possible... $\sqrt{-4}$ = -2 x -2 no... 2 x 2 no..... -2 x 2 yea but thats not square root anymore...

Step-by-step explanation:

Give me brainliest!!!

7 0

3 years ago

As a salesperson, you are paid $92 per week plus $4 per sale. This week you want your pay to be at least $200. Write an inequali

BARSIC [14]

The answer is D

You need to make at least $200 so that is greater then or = to. You subtract 92 from 200 which gives you 108. From there you take 108/4 which is 27

5 0

2 years ago