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3 years ago

How many terms are in the expression below? 5x +3 - 3x – 1 + 2x + 5

Mathematics

1 answer:

marin [14]3 years ago

5 0

Answer:

Step-by-step explanation:

5x + 3 - 3x - 1 + 2x + 5

you can combine the like terms

5x - 3x + 2x = 4x

3 - 1 + 5 = 7

4x + 7

there are 2 terms in the expression

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in the figure below trianglePQM and triangleQRP are right triangles. the measure of lineQM is 6 and the measure of lineQP is 8.

Kipish [7]

Answer:

Option 4 is correct. The length of PR is 6.4 units.

Step-by-step explanation:

From the given figure it is noticed that the triangle PQR and triangle MQR.

Let the length of PR be x.

Pythagoras formula

$hypotenuse^2=base^2+perpendicular^2$

Use pythagoras formula for triangle PQM.

$PM^2=QM^2+PQ^2$

$PM^2=(6)^2+(8)^2$

$PM^2=36+64$

$PM^2=100$

$PM=10$

The value of PM is 10. The length of PR is x, so the length of MR is (10-x).

Use pythagoras formula for triangle PQR.

$PQ^2=QR^2+PR^2$

$(8)^2=QR^2+x^2$

$64-x^2=QR^2$ .....(1)

Use pythagoras formula for triangle MQR.

$MQ^2=QR^2+MR^2$

$(6)^2=QR^2+(10-x)^2$

$36=QR^2+x^2-20x+100$

$36-x^2+20x-100=QR^2$ .... (2)

From equation (1) and (2) we get

$36-x^2+20x-100=64-x^2$

$20x-64=64$

$20x=128$

$x=6.4$

Therefore length of PR is 6.4 units and option 4 is correct.

3 0

3 years ago

Help me out pls I'm kinda confused

BartSMP [9]

I think the one you chose is correct but I am not sure tho

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7Bx-5%7D" id="TexFormula1" title="\sqrt[3]{x-5}" alt="\sqrt[3]{x-5}" align="abs

sashaice [31]

Answer:

It cannot be solved furthur bro as the value of x is unspecified

6 0

3 years ago

16 + 2q = 6 what’s this?

nika2105 [10]

Answer:

6 - 16 = -10

-10/2 = -5

q = -5

4 0

3 years ago

Iris has 120 songs on her playlist. Each week, she downloads 4 new songs.

aksik [14]

Answer:

4w+120.

Step-by-step explanation:

She downloads 4 songs for every week which is represented as 4w, and she started with 120 songs which is represented as +120.

6 0

3 years ago

Read 2 more answers