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3 years ago

Which situation could the expression -255 represent?

Mathematics

1 answer:

alina1380 [7]3 years ago

5 0

Answer:

B, I believe.

Step-by-step explanation:

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Please help me ASAP!!

IgorC [24]

Answer:

12.53

Step-by-step explanation:

6^2+11^2=sqrt157 =12.53

6 0

3 years ago

A sector with a central angle measure of 4pi/5

ELEN [110]

Answer: the area is 20 square centimeters.

Step-by-step explanation:

The area of an arc of angle x in a circle of radius r is:

A = (x/3.14)*3.14*r^2 = x*r^2

here we have x = (4/5)*3.14 and r = 5cm

Then the area is:

A = (4/5)*(5cm)^2 = 20cm^2

4 0

3 years ago

Read 2 more answers

Find the estimates of x^2-x-2=3

Julli [10]

Answer:

$x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

Step-by-step explanation:

Given

Quadratic equation is

$x^2-x-2=3\\x^2-x-5=0$

Roots of the quadratic equation $ax^2+bx+c=0$ are

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\$

So, for the given equation roots are

$x=\frac{1\pm\sqrt{(-1)^2-4(1)(-5)}}{2\cdot 1}\\x=\frac{1\pm\sqrt{21}}{2}\\so, x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

5 0

2 years ago

Janet has $120. If she saves $20 per week, in how many days will she have $500

Burka [1]

<span>Divide $380 by 20 and then multiply the result by 7. Its really not hard I promise I basically just gave you the answer</span>

4 0

3 years ago

Read 2 more answers

HELP WILL GIVE BRAINLIEST SHOW WORK LOOK AT IMAGE

ycow [4]

The correct answer is x = 6

5 0

2 years ago