All categories

3 years ago

Pleas help me i dont know how to figure out the angles

Mathematics

1 answer:

LiRa [457]3 years ago

4 0

Answer:

angle b = 60°, angle c = 50°

Step-by-step explanation:

angle b: 120° - 80° = 60°

this is because a straight line is 180*, therefore given the angle 120° we can work out the other by subtracting it from 180°

angle c: 60° + 70° = 130°, 180° - 130° = 50°

this is because angles in a triangle add up to 180°, therefore given two angles we can subtract them from 180° to get the third

hope this helps! :)

You might be interested in

The sum of two numbers is 49 and the difference between these two numbers is 9. What are these two numbers?Shown working out pl

8_murik_8 [283]

Let numbers be x and y

ATQ

x+y=49---(1)

x-y=9---(2)

Adding both

$\\ \sf\longmapsto 2x=58$

$\\ \sf\longmapsto x=\dfrac{58}{2}$

$\\ \sf\longmapsto x=29$

Now putting value in eq(2)

$\\ \sf\longmapsto x-y=9$

$\\ \sf\longmapsto 29-9=y$

$\\ \sf\longmapsto y=20$

7 0

3 years ago

2x^3-x^2+x-2 factorize

bekas [8.4K]

Answer:

$(x-1)(2x^2+x+2)$

Step-by-step explanation:

Factorize:

$f(x)=2x^3-x^2+x-2$

<u>Factor Theorem</u>

If f(a) = 0 for a polynomial then (x - a) is a factor of the polynomial f(x).

Substitute x = 1 into the function:

$\implies f(1)=2(1)^3-1^2+1-2=0$

Therefore, (x - 1) is a factor.

As the polynomial is cubic:

$\implies f(x)=(x-1)(ax^2+bx+c)$

Expanding the brackets:

$\implies f(x)=ax^3+bx^2+cx-ax^2-bx-c$

$\implies f(x)=ax^3+(b-a)x^2+(c-b)x-c$

Comparing coefficients with the original polynomial:

$\implies ax^3=2x^3 \implies a=2$

$\implies (b-a)x^2=-x^2 \implies b-2=-1 \implies b=1$

$\implies -c=-2 \implies c=2$

Therefore:

$\implies f(x)=(x-1)(2x^2+x+2)$

Cannot be factored any further.

4 0

2 years ago

Read 2 more answers

3/4 divided by 2 and 1/2??? Plssss thank youuu.

natita [175]

Answer:

3/4 divided by 2 1/2 is 0.3

7 0

2 years ago

Solve the equation, |2x+1|=3(x+1) step by step. Does this equation have any extraneous solutions? If so, state them below.

GuDViN [60]

Answer:

Step-by-step explanation:1

6 0

2 years ago

Read 2 more answers

Number in box to complete calculation. 3302 ÷ 13

Tpy6a [65]

Answer:

254

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers