All categories

3 years ago

What is the correct answer?

Mathematics

1 answer:

Svetlanka [38]3 years ago

4 0

Answer:

Terms must have the same variable (letter) and the same exponent (little number)

(7x² +3y+ 5) +(9x²+11y- 2)

Opening bracket

7x²+3y+5+9x²+11y-2

keeping like terms together

7x²+9x²+3y+11y+5-2

Since terms having same variable and exponent can be subtracted, added,divided and multiplied

Solving like terms we get

16x²+14y+3 which is a correct answer.

You might be interested in

The time, t, required to travel a fixed distance varies inversely as the

Lemur [1.5K]

You must travel at 42 mph for 4 hours

Solution:

Time varies inversely as rate of motion

Let "t" be the time required

Let "r" be the rate of motion

Then, we get

$t \propto \frac{1}{r}\\\\t = k \times \frac{1}{r}\\\\t = \frac{k}{r} -------- eqn 1$

Where, "k" is the constant of proportionality

You travel 3 hours at a rate of 56 mph

Substitute t = 3 and r = 56 in eqn 1

$3 = \frac{k}{56}\\\\k = 3 \times 56\\\\k = 168$

Find the rate you must travel for 4 hours

r = ? and t = 4

Substitute t = 4 and k = 168 in eqn 1

$4 = \frac{168}{r}\\\\r = \frac{168}{4}\\\\r = 42$

Thus you must travel at 42 mph for 4 hours

4 0

4 years ago

15 x 3 - 21/3 divided by 24/4?

Galina-37 [17]

I’m pretty sure it’s 43.8

6 0

3 years ago

Read 2 more answers

Point A is at (3, 4) and point M is at (1, 0). Point M is the midpoint of segment AB. What

kompoz [17]

Answer:

B (-1 , -4)

Step-by-step explanation:

A (3 , 4)

M (1 , 0)

$B\left( x_{B},y_{B}\right)$

M is the midpoint of segment AB means :

$\begin{cases}\frac{x_{A}+x_{B}}{2} =x_{M}&\\ \frac{y_{A}+y_{B}}{2} =y_{M}}{} &\end{cases}$

Then

$\begin{cases}x_{B}=2x_{M}-x_{A}&\\ y_{B}=2y_{M}-y_{A}&\end{cases}$

Then

$\begin{cases}x_{B}=2\left( 1\right) -3&\\ y_{B}=2(0)-4&\end{cases}$

Then

$\begin{cases}x_{B}=-1&\\ y_{B}=-4&\end{cases}$

3 0

2 years ago

40+30+10 in commutative property

Anika [276]

Answer:

10 + 40 + 30

Step-by-step explanation:

Commutative property states that the order in which we add numbers does not affect the answer, so we just need to change the order of numbers

Answered by Gauthmath

3 0

3 years ago

Evaluate: log7 343 NOTE: the equation is base-7

g100num [7]

To evaluate the equation log7 343 (with base 7) , we pattern this to its standard form log a b (with base a). this expression is equal to log b over log a. In this case, the expression given is equal to log 343 / log 7. The answer to this problem is 3. 3^7 is equal to 343.

8 0

3 years ago

Read 2 more answers