All categories

3 years ago

Help me ASAP! Will give brainliest to whoever answers these correctly.

Mathematics

1 answer:

hammer [34]3 years ago

5 0

#9. There are 180 degrees in a triangle. We already know two of the sides which added together make 112. Then we do, 180-112=68

#10. We do the same process. 90 + 60 = 150
150-180= 30

#11. To find whether or not any three numbers can make a triangle, two of the numbers must equal more than the remaining number. But this has to be the case for any combination. 6+7=13. 13 is larger than 11. So yes it can.

#12. 8+2=10 which may be bigger than 6 but, 6+2=8. Which is equal to 8. So no, it cannot make a triangle.

I’m still working out the first question

You might be interested in

the zero of the quadratic polynomial x^2+99x+127 are a both positive b both negative c one +ve one-ve d both equal. please help

Paha777 [63]

Step-by-step explanation:

By Descrates' Rule of Signs,

x² + 99x + 127 changes sign 0 times.

Hence it has 0 positive roots.

Since the discriminant b² - 4ac is also positive, there are 2 real distinct roots.

Hence both the roots are negative. (B)

7 0

3 years ago

Read 2 more answers

Find the real root of the equation x3 + x2 - 1 = 0 by using iteration method.

Yanka [14]

Answer:

i cant help that much but u can try using photomath

7 0

3 years ago

Find the value of x in the triangle shown below. 56° 4 4.5 4

svetlana [45]

Step-by-step explanation:

$\frac{ \sin(56) }{4} = \frac{ \sin(x) }{4.5} \\ \sin(x ) = \frac{4.5 \times \sin(56) }{4} = \frac{3.73}{4} \\ \sin(x) = 0.9326 \\ x = 68.84$

4 0

3 years ago

My assignment says The perimeter of a rectangle is 30 cm.

ale4655 [162]

Let side be "a" cm. So another side is (30-2a)/2=15-a
S=ab=a(15-a)=15a-a^2 - parabola
maximum when a = -15/-2=7.5 cm
When a=7.5 all sides are 7.5 cm
So it's a square. S=a*a=7.5*7.5=56.25 cm^2 - max
There is no global minimun for S.(look at the graphic)

6 0

3 years ago

1/3 (x+2)=-2/5 (x-9) and x=4

MAXImum [283]

Answer:

2 = 2 (Identity)

Step-by-step explanation:

1/3 (x+2)=-2/5 (x-9) and x=4

Follow distributive property

1/3x + 2/3 = -2/5x + 18/5

Replace x for 4

1/3(4) + 2/3 = -2/5(4) + 18/5

4/3 + 2/3 = -8/5 + 18/5

Add like terms

6/3 = 10/5

Simplify

2 = 2

Also known as Identity

8 0

3 years ago

Help me ASAP! Will give brainliest to whoever answers these correctly.​

Help me ASAP! Will give brainliest to whoever answers these correctly.