Ask question

Ask question

All categories

My name is Ann [436]

2 years ago

15

Solve the equation : 2x + 7 = 21 and find the value of x. Is 2x + 7 = 21 a first degree equation or not?

1 answer:

Paraphin [41]2 years ago

4 0

Answer:

The proposed equation is solved as follows:

2X + 7 = 21

2X = 21 - 7

2X = 14

X = 14 / 2

X = 7

The value of X is 7.

A first degree equation is an algebraic equation in which each term is either a constant or a product of a fixed term on a single variable. Therefore, this equation is a first degree one, since it only has a single variable, which is X.

You might be interested in

Triangle abc is similar to triangle qrs. what is the length of rq

aivan3 [116]

If the two triangles are similar, then the corresponding parts of congruent triangles are congruent.

That means that the length of RQ is the same as the corresponding side from triangle ABC.

Hope this helps :)

4 0

3 years ago

Expect a ton of trigonometry questions from this account. i know absolutely nothing

Paha777 [63]

Answer:

see attached formulas

Step-by-step explanation:

Math is beautiful. Have fun learning.

8 0

1 year ago

I’m confused how do you know where to put the plus and minus signs when rearranging the equation?

IRINA_888 [86]

-5/12k +29/36m is simplified

7 0

2 years ago

A college student is taking two courses. The probability she passes the first course is 0.67. The probability she passes the sec

andrezito [222]

Answer:

0.58 = 58% probability she passes both courses

Step-by-step explanation:

We can solve this question treating the probabilities as a Venn set.

I am going to say that:

Event A: She passes the first course.

Event B: She passes the second course.

The probability she passes the first course is 0.67.

This means that $P(A) = 0.67$

The probability she passes the second course is 0.7.

This means that $P(B) = 0.7$

The probability she passes at least one of the courses is 0.79.

This means that $P(A \cup B) = 0.79$

a. What is the probability she passes both courses

This is $P(A \cap B)$ .

We use the following relation:

$P(A \cup B) = P(A) + P(B) - P(A \cap B)$

So

$P(A \cap B) = P(A) + P(B) - P(A \cup B) = 0.67 + 0.7 - 0.79 = 0.58$

0.58 = 58% probability she passes both courses

5 0

3 years ago

I need the volume of these two figures

Eduardwww [97]

Answer:

i already answered this

Step-by-step explanation:

the first one is 11520 the second one is 10

6 0

2 years ago