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3 years ago

8

Help easy math problem!!!!!!’

2 answers:

MariettaO [177]3 years ago

6 0

Answer:

I'm not sure if this is right, but hope this helps tho

Step-by-step explanation:

It's a calculator

kap26 [50]3 years ago

3 0

Look the answer up on the delta math website it’ll pop up

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FIND THE ANSWER PLZ Factor –25x – 5.

kvasek [131]

answer is 130 use calculator

6 0

3 years ago

Read 2 more answers

X5+15x4+54x3-25x2-75x-34 by x+8

nordsb [41]

x^4 + 7x^3 - 2x^2 - 9x - 3 - (10/x+8)

5 0

4 years ago

Find the absolute maximum and absolute minimum values of f on the given interval. f(t) = 2 cos(t) + sin(2t),[0, π/2].

castortr0y [4]

Answer:

The absolute maximum is $\frac{3\sqrt 3}2$ and the absolute minimum value is $0.$

Step-by-step explanation:

Differentiate of $f$ both sides w.r.t. $t$ ,

$f(t)=2 \cos t+\sin 2t$

$\Rightarrow f'(t)=-2\sin t+2\cos 2t$

Now take $f'(t)=0$

$\Rightarrow -2\sin t+2\cos 2t=0$

$\Rightarrow 2\cos 2t=2\sin t$

$\Rightarrow \cos 2t=\sin t$

$\Rightarrow 1-2\sin ^2t =\sin t \quad \quad [\because \cos 2t = 1-2\sin ^2t]$

$\Rightarrow 2\sin ^2t+\sin t-1=0$

$\Rightarrow 2\sin ^2t+2\sin t-\sin t-1=0$

$\Rightarrow 2\sin t(\sin t+1)-1(\sin t+1)=0$

$\Rightarrow (\sin t+1)(2\sin t-1)=0$

$\Rightarrow \sin t+1=0 \;\text{and}\; 2\sin t-1=0$

$\Rightarrow \sin t =-1 \;\text{and}\; \sin t =\frac 12$

In the interval $0\leq t\leq \frac {\pi}2$ , the answer to this problem is $\frac {\pi}6$

Now find the second derivative of $f(t)$ w.r.t. $t$ ,

$f''(t)=-2\cos t-4\sin 2t$

$\Rightarrow \left[f''(t)\right]_{t=\frac {\pi}6}=-2\times \frac {\sqrt 3}2-4\times \frac{\sqrt 3}2=-3\sqrt 3$

Thus, $f(t)$ is maximum at $t=\frac {\pi}6$ and minimum at $t=0$

$\left[f(t)\right]_{t=\frac {\pi}6}=2\times \frac {\sqrt 3}2+\frac{\sqrt 3}2=\frac{3\sqrt 3}2\;\text{and}\;\left[f(t)\right]_{t=\frac{\pi}2}= 2\times 0+0=0$

Hence, the absolute maximum is $\frac{3\sqrt 3}2$ and the absolute minimum value is $0$ .

7 0

3 years ago

Let f(x) = -5x - 4 and g(x) = 6x - 7. Find f(x) + g(x)

Fynjy0 [20]

Simple...

if f(x)= -5x-4 and g(x)=6x-7

And you want f(x)+g(x)

then just add.....f(x)+g(x)

-5x-4+6x-7

1x-11

This is the answer to f(x)+g(x)=1x-11

Thus, your answer.

3 0

3 years ago

A 7 cm x 5 cm rectangle sits inside a circle with radius of 6 cm.

LenaWriter [7]

Answer:

78.04 square cm

Step-by-step explanation:

Area of shaded region = area of circle - Area of rectangle

$= \pi \: {r}^{2} - l \times w \\ = 3.14 \times {6}^{2} - 7 \times 5 \\ = 3.14 \times 36 - 35 \\ = 113.04 - 35 \\ = 78.04 \: {cm}^{2}$

3 0

3 years ago