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3 years ago

hey its me again. need help.... pls.... i forgot how to give brainliest so lol. anyways, 50 pts to whoever answers! thx loves.

Mathematics

2 answers:

fredd [130]3 years ago

6 0

Answer:

Step-by-step explanation:

50 x 50 x 50 =125000, 3 sides = cubic feet

ludmilkaskok [199]3 years ago

6 0

You multiply 50 three times and then you will get the volume.

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F(x)=x2-10 and g(x)=11-x find (f-g)(x)(f-g)(10) and (f/g)(x) if they exist

tester [92]

Answer:

$(f - g)(x) = x^2 + x-21$

$(f - g)(10) = 89$

$(f/g)(x) = \frac{x^2 - 10}{11 - x}$

Step-by-step explanation:

Given

$f(x) = x^2 - 10$

$g(x) = 11 - x$

Solving (1): (f-g)(x)

$(f - g)(x) = f(x) - g(x)$

Substitute values for f(x) and g(x)

$(f - g)(x) = x^2 - 10 - (11 - x)$

Open Bracket

$(f - g)(x) = x^2 - 10 - 11 + x$

$(f - g)(x) = x^2 -21 + x$

Reorder

$(f - g)(x) = x^2 + x-21$

Solving (2): (f-g)(10)

In (1)

$(f - g)(x) = x^2 + x-21$

So:

$(f - g)(10) = 10^2 + 10-21$

$(f - g)(10) = 100 + 10-21$

$(f - g)(10) = 89$

Solving (3): (f/g)(x)

$(f/g)(x) = \frac{f(x)}{g(x)}$

Substitute values for f(x) and g(x)

$(f/g)(x) = \frac{x^2 - 10}{11 - x}$

6 0

3 years ago

Carpenters use a tool called a speed square to help them mark right angles . A speed square is a right triangle

Ronch [10]

Answer:

A. $Area = \frac{1}{2}(2x^2 - 2x - 24)$

B. $Area = 3.75 in^2$

Step-by-step explanation:

A. $Area = \frac{1}{2}bh$

Where,

$b = 2x + 6$

$h = x - 4$

Plug in the values to get a polynomial that represents the area of the tool

$Area = \frac{1}{2}(2x + 6)(x - 4)$

$Area = \frac{1}{2}(2x(x - 4) + 6(x - 4)$

$Area = \frac{1}{2}(2x^2 - 8x + 6x - 24)$

$Area = \frac{1}{2}(2x^2 - 2x - 24)$

B. To find area, when x = 4.5 in, plug in the value of x into the equation for the area of the tool.

$Area = \frac{1}{2}(2(4.5)2 - 2(4.5) - 24)$

$Area = \frac{1}{2}(2(20.25) - 9 - 24)$

$Area = \frac{1}{2}(40.5 - 9 - 24)$

$Area = \frac{1}{2}(7.5)$

$Area = 3.75 in^2$

8 0

4 years ago

A farmer has a grain bin with 4,000 cubic feet of barley in it. He uses 800 cubic feet to feed his herd of cows. The next day, h

ANEK [815]

Answer:b- 4,000

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Does anybody know how to determine the angle again? of Q.B

Nastasia [14]

Answer:

Therefore the measur angle ACB

$m\angle ACB=61.93\°$

Step-by-step explanation:

Given:

ΔABC is a right Triangle at ∠A = 90°

AB = 15 ....Side Opposite to ∠ACB

AC = 8 ....Side Adjacent to ∠ACB

To Find:

m∠ACB = ?

Solution:

In Right Angle Triangle ABC, Tangent Identity we have

$\tan (\angle ACB) = \dfrac{\textrm{side opposite to angle ACB}}{\textrm{side adjacent to angle ACB}}$

Substituting the values we get

$\tan (\angle ACB) = \dfrac{AB}{AC}=\dfrac{15}{8}=1.875\\\\\angle ACB=\tan^{-1}(1.875)\\m\angle ACB=61.93\°$

Therefore the measur angle ACB

$m\angle ACB=61.93\°$

7 0

4 years ago

Help asap please and thank you!!

CaHeK987 [17]

Yayayahshshssbshhs

Answer

8 0

3 years ago

hey its me again. need help.... pls.... i forgot how to give brainliest so lol. anyways, 50 pts to whoever answers! thx loves. ​

hey its me again. need help.... pls.... i forgot how to give brainliest so lol. anyways, 50 pts to whoever answers! thx loves.