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3 years ago

Find the value of the expression below. 75 + 39 - 84-61

Mathematics

2 answers:

Katarina [22]3 years ago

7 0

Answer:if I’m correct it’s -31

Step-by-step explanation:

Lady bird [3.3K]3 years ago

6 0

Answer:

Find the exact value using trigonometric identities.

−31

Step-by-step explanation:

Hope this helps, If it did, then I would really appreciate it if you gave me Brainliest, I only need one more to rank up and it has taken forever to get to where I am currently. Thanks.

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Draw the 4th set in the pattern

Andrej [43]

It seems as if it adds 2 blocks to the bottom end each time, and 1 to the top.

So, it would be a t-shape with those rules

3 0

3 years ago

The remainder when p\left(x\right)=x^3-2x^2+8x+kp ( x ) = x 3 − 2 x 2 + 8 x + k by (x-2) is 19. What is the remainder when p(x)

Dafna11 [192]

Answer:

Remainder when p(x) is divided by (x+2) is -29

Step-by-step explanation:

p(x) = $x^{3} - 2x^{2} + 8x + k$

When p(x) is divided by (x-2), remainder is 19.

p(x - 2 = 0) gives the remainder when p(x) is divided by (x-2)

x - 2 = 0

x = 2

p(x-2=0) = p(2) = $2^{3} - 2(2^{2}) + 8(2) + k$ = 19

8 - 8 + 16 + k = 19

k = 3

p(x) = $x^{3} - 2x^{2} + 8x + 3$

p(x + 2 = 0) gives the remainder when p(x) is divided by (x+2)

x + 2 = 0

x = -2

p(x+2=0) = p(-2) = $(-2)^{3} - 2((-2)^{2}) + 8(-2) + 3$

p(-2) = - 8 - 8 - 16 + 3 = -29

Remainder when p(x) is divided by (x+2) is -29

6 0

3 years ago

Read 2 more answers

Which two quantities form a proportional relationship?<br><br> pls help asap ignore the answer i put

tatuchka [14]

Answer:

Step-by-step explanation:

15 times 2 is 30

1 times 2 is 2

Proportinal

Hope this helps

3 0

2 years ago

What is the value of n in the equation 3n + 2(n + 2) = 9n + 12?

Alex777 [14]

3n+2n+4=9n+12
5n+4=9n+12
4-12=9n-5n
-8=4n
Divide both sides by 4
n=-2

6 0

3 years ago

NO ONE EVER ANSWERS MY QUESTIONS I NEED HELP PLEASE!!! 2 problems Given: △KLM LM=12, m∠K=60°, m∠M=45° Find: Perimeter of △KLM. a

almond37 [142]

To solve this problem we will use sinus theorem.

It's general form is

a/sinα = b/sinβ = c/sinγ

In this case it reads ML/sin∡K = KL/sin∡M = KM/sin∡L =>

ML/sin∡K = KL/sin∡M => 12/sin60° = KL/sin45° => 12/(√3/2) = KL/(√2/2) =>

2*12/√3 = 2*KL/√2 => We will divide whole equation with number 2 and get

12/√3=KL/√2 => KL*√3=12√2 => KL=(12√2)/√3

When we rationalize denominator we get KL=4√6≈ 4*2.45= 9.8

Considering that we know two angles we will calculate the third

∡K+∡M+∡L=180° => 60°+45°+∡L=180° => ∡L= 180-105=75°

Reason- The theorem of the sum of the inner angles of the triangle

ML/sin∡K=KM/sin∡L => 12/sin60°=KM/sin75°

We will calculate sin75° = sin (30+45)= sin30 *cos45+cos30*sin45 =>

sin75°= 1/2 * √2/2 = √3/2 * √2/2= √2/4 *(√3+1)≈(1.41/4)*(1.73+1)=0.96

12/(√3/2)=KM/0.96 => 12*2/√3=KM/0.96 => 13.87=KM/0.96 =>

KM=13.87*0.96= 13.31

Perimeter of ΔKLM => P=KL+ML+KM= 12+9.8+13.31= 35.11

In the same way you can calculate perimeter of ΔMNO.

Good luck!!!

4 0

3 years ago