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scoundrel [369]
3 years ago
6

Circle the problems below that you could use mental math to solve.

Mathematics
1 answer:
SashulF [63]3 years ago
4 0
I think this is more of an opinion question. What someone could solve mentally may not be the same as someone else's.If it were my worksheet, I'd circle all of them but it may be different for you.
At your level, I'd probably circle:
54 - 10
93 - 20
and 39 - 2
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I need help with this<br> If x + 3 /3 = y + 2/ 2 ,then x/ 3 =
abruzzese [7]

Answer:

First solve for x

then substitute

Step-by-step explanation:

\frac{x+3}{3}= \frac{y+2}{2}

6(\frac{x+3}{3}=\frac{y+2}{2})

2x + 6 = 3y + 6

2x = 3y

x = \frac{3y}{2}

If \frac{x+3}{3}= \frac{y+2}{2} then \frac{x}{3} =

x = \frac{3y}{2} /3 = \frac{y}3}

6 0
3 years ago
Select one of the factors of 4x^2 + 5x − 6
BARSIC [14]

Answer:

The answer to your question is: letter C

Step-by-step explanation:

                                        4x² + 5x - 6

Process

                4 x - 6 = - 24

                Find two numbers that added gives + 5 and multiply gives -24

                These numbers are + 8 and - 3

                 4x² + 8x - 3x - 6

                 4x ( x + 2) - 3(x + 2)

                (x + 2) (4x - 3)

5 0
3 years ago
Read 2 more answers
Is x-10 a factor of f(x)=5x^3+60x^2+109x+90
RUDIKE [14]

Answer:

No

Step-by-step explanation:

Given values are

f(x) = 5x^3+60x^2+109x+90

x = -10.

Given Polynomial is 5x^3+60x^2+109x+90 .

= (90)+(5.x^3)+(60.x^2)+(109.x)

By putting x = (-10) we can rewrite it as

= (90)+(5.(-10)^3)+(60.(-10)^2)+(109.(-10))

= (90)+(-5000)+(6000)+(-1090)

= 0

The remainder of given polynomial is 0.

4 0
3 years ago
Help with this please
klasskru [66]
53 Degrees
53 Degrees
5 0
3 years ago
Read 2 more answers
ANSWER ASAP PLEASE!!!
Thepotemich [5.8K]

area of triangle = 1/2(3)(4) = 6 in^2

area of rectangle = 3 x 10 = 30 in^2

area of trapezoid = 1/2(3+5)(2) = 8 in^2


area of the figure: 6 in^2 + 30 in^2 + 8 in^2 = 44 in^2


answer

44 in^2

3 0
3 years ago
Read 2 more answers
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