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3 years ago

Help please!! It would be nice if you could add an explanation, but you don't have to. I just need the answer.

Mathematics

1 answer:

Firlakuza [10]3 years ago

4 0

The answer is B I solved this my self

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What is the value of y?

solong [7]

Sum of interior angles in a triangle = 180
so
2y + y+10 + 50 = 180
3y + 60 = 180
3y = 120
y = 40

Answer is A. 40

8 0

4 years ago

What type of triangle is this? 5 7 8 acute obtuse

Aleks [24]

Answer:

Acute

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Write the point-slope form of the equation of the line that passes through the points (6, 6) and (-6, 1). Include your work in y

Allushta [10]

Answer:

Step-by-step explanation:

you need the formula (y-y1) = m(x-x1) that uses a slope and a point

m=(y1-y2)/(x2-x1)= 6-1/6+6=5/12

now pic any poit out of the 2 given ones

Answer:

(y-6) =(5/12)(x-6)

same for all the other

3 0

3 years ago

A teenager who is 5 feet tall throws an object into the air. The quadratic function LaTeX: f\left(x\right)=-16x^2+64x+5f ( x ) =

tia_tia [17]

Answer:

At approximately x = 0.08 and x = 3.92.

Step-by-step explanation:

The height of the ball is modeled by the function:

$f(x)=-16x^2+64x+5$

Where f(x) is the height after x seconds.

We want to determine the time(s) when the ball is 10 feet in the air.

Therefore, we will set the function equal to 10 and solve for x:

$10=-16x^2+64x+5$

Subtracting 10 from both sides:

$-16x^2+64x-5=0$

For simplicity, divide both sides by -1:

$16x^2-64x+5=0$

We will use the quadratic formula. In this case a = 16, b = -64, and c = 5. Therefore:

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

Substitute:

$\displaystyle x=\frac{-(-64)\pm\sqrt{(-64)^2-4(16)(5)}}{2(16)}$

Evaluate:

$\displaystyle x=\frac{64\pm\sqrt{3776}}{32}$

Simplify the square root:

$\sqrt{3776}=\sqrt{64\cdot 59}=8\sqrt{59}$

Therefore:

$\displaystyle x=\frac{64\pm8\sqrt{59}}{32}$

Simplify:

$\displaystyle x=\frac{8\pm\sqrt{59}}{4}$

Approximate:

$\displaystyle x=\frac{8+\sqrt{59}}{4}\approx 3.92\text{ and } x=\frac{8-\sqrt{59}}{4}\approx0.08$

Therefore, the ball will reach a height of 10 feet at approximately x = 0.08 and x = 3.92.

7 0

3 years ago

Explain how comparing 645 and 738 is different from comparing 645 and 649

slavikrds [6]

I think it is because they are both different differences

7 0

3 years ago