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3 years ago

Find the area of triangle ABC with the given parts. Round to the nearest whole number.

Mathematics

1 answer:

slavikrds [6]3 years ago

3 0

$\sin{26.4^o}= \frac{h}{12.3} 
\\
\\h=12.3\times \sin{26.4^o}=5.47
\\
\\A= \frac{7.7\times5.47}{2}= 21.06$

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What is the coefficient of the term 6/7xy (a fraction) ?

Marta_Voda [28]

Answer:

6/7

Step-by-step explanation:

The coefficient is <u>the number right in front of the variable</u>, so in this problem, the coefficient is 6/7.

6 0

3 years ago

Solve 2x^3+7x^2-2x-1=o

Mashcka [7]

Answer:

$x=\sqrt{3}-2\\x=-\sqrt{3}-2\\x=\frac{1}{2}$

Step-by-step explanation:

This is a hard one

We have to use the rational root theorem

$2x^3+7x^2-2x-1$ = 0

We have to find all the factors of a and d and put them in a fraction

$a=2\\d=-1\\\frac{1}{1,2}$

We then plug them into the equation to see if any of them work

The equation isn't true when plugging 1, but is true when plugging in 1/2

factored form of 1/2 is (2x-1)

Then we divide the original equation by (2x-1) (you can use synthetic division or long division, it would be hard to type out the process for that) to get $x^2+4x+1$

So now the equation is $(2x-1)(x^2+4x+1)$

Solve the second half of this equation using the quadratic formula to get

$\sqrt{3}-2$ and $-\sqrt{3}-2$

We already know the solution for the first half of the equation (1/2)

So the final answers are:

$x=\sqrt{3}-2, -\sqrt{3}-2, \frac{1}{2}$

8 0

3 years ago

6. Josh has a $250 gift card to Under Armour.

Komok [63]

Answer:

x=10 (22.5x+6.50=250)

Step-by-step explanation:

6 0

3 years ago

Two times a number minus six another number is six. Two times the first number added to three times the other number is twenty f

expeople1 [14]

Answer:

First Number: 2

Step-by-step explanation:

You need to work backwards, as an algebraic equation.

24 ÷ 3 = 8

8 ÷ 2 = 4

4 × 2 = 8

8 - 6 = 2

The first number is 2.

- Educationist

4 0

2 years ago

Simplify to create a equivalent expression.

Ratling [72]

Answer:

$\boxed{\bold{66k+9}}$

Explanation:

Expand $\bold{5\left(10k+1\right): \ 50k+5}$

= $\bold{50k+5+2\left(2+8k\right)}$

Expand $\bold{2\left(2+8k\right): \ 4+16k}$

= $\bold{50k+5+4+16k}$

Simplify $\bold{50k+5+4+16k: \ 66k+9}$

= $\bold{66k+9}$

Mordancy.

7 0

3 years ago

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