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3 years ago

These are true or false questions!! 9(3+5) = 9×3+5 4^2 = 3(4)+4

Mathematics

2 answers:

erma4kov [3.2K]3 years ago

4 0

Answer:

Below.

Step-by-step explanation:

9(3+5) = 9×3+5:-

Now left side = 9*8 = 72 and

right side = 27 + 5 = 32

- so FALSE.

4^2 = 16

3(4) + 4 = 12 + 4 = 16

so TRUE.

Arisa [49]3 years ago

3 0

Answer:

9 ( 3 + 5 ) = ( 9 × 3 ) + ( 9 × 5 ) = 27 + 45 = 72
9 × 3 + 5 = 27 + 5 = 32
9 ( 3 + 5 ) ≠ 9 × 3 + 5

→ Therefore, the given statement is FALSE

4² = 16
3 (4) + 4 = 12 + 4 = 16
4² = 3 (4) + 4

→ Therefore, the given statement is TRUE

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Age of Peter + age of Pol = 39

GalinKa [24]

Answer:

PETER 18

POL 21

MARY 26

Step-by-step explanation:

I dont know if I did in the right way...

1st: Take any number for peter's or pol's age

I took 18 for peter, RANDOMLY

2nd: Subtract the age from the total to get pol's age

39-18=21 Hence, pols age is 21

3rd: Subtract peter's age from the total to get marys age

47-18=26 Hence, Marys age is 26

4th: Add the age of pol and mary

aaand, you get 47

Done!

Hope it helps!!!

6 0

3 years ago

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Elza [17]

The answer is 104640 I hope it helps you

3 0

3 years ago

Add the equations. What value belongs in the green box? 3x + 2y = 9 -x - 2y = 4 [?] + [?] = [?] A. 4x B. 2x C. -3x D. -2x

Naddika [18.5K]

Consider the first blank is the green box.

Given:

The equations are

$3x+2y=9$

$-x-2y=4$

To find:

The value belongs in the green box

Solution:

We have,

$3x+2y=9$ ...(i)

$-x-2y=4$ ...(ii)

Adding (i) and (ii), we get

$3x+2y-x-2y=9+4$

$(3x-x)+(2y-2y)=13$

$2x+0=13$

So, the value for the first black is 2x. It means the value belongs in the green box is 2x.

The values of three blanks are 2x, 0 and 13 respectively.

Therefore, the correct option is B.

6 0

3 years ago

The answer appears incorrect, please help me correct it :)

UNO [17]

Every line on the graph is 1/2 unit.

When y = 0, x would be -0.25 and 1.25

When y = 2, x would be -0.5 and 1.5

4 0

3 years ago

How many ways can a dance instructor send 4 of her 11 students to a summer dance program?

Sedaia [141]

Answer:

d) 330

Step-by-step explanation:

The number of ways can a dance instructor send 4 of her 11 students to summer dance program is C(11 , 4)

That is $11_{C_{4} }$ ways

by using formula $n_{C_{r} } = \frac{n!}{(n-r)!r!}$

now simplification

$11_{C_{4} } = \frac{11!}{(11-4)!4!}$

= $\frac{11X10X9X8X7!}{(7!)4X3X2X1}$

after cancelling 7! and on simplification

= $\frac{11X10X9X8}{4X3X2X1}$

after cancellation we get 330 ways

The number of ways can a dance instructor send 4 of her 11 students to summer dance program is 330

8 0

3 years ago