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3 years ago

0.04x -0.06y=0.48 0.08x-0.11 y=0.92

Mathematics

1 answer:

UkoKoshka [18]3 years ago

6 0

Answer:

0.04x -0.06y=0.48

x = 1.5y + 12

0.08x-0.11 y=0.92

x = 1.375y + 11.5

Hope this helps!

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Mitchell is hired to paint a mural on a wall with an area of 21 1/8 square yards. what is the length of the wall?

Pie

Answer:

I believe that something is missing.

Step-by-step explanation:

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3 years ago

Find the percentage error |sinθ - θ|/sin(θ)*100 this approximation introduces for an angle of 0. 020 radians.

Elza [17]

Considering the given angle and the given formula, it is found that the percentage error for an angle of 0.02 radians is of 0.0067%.

<h3>What is the percentage angle for an angle?</h3>

For an angle $\theta$ , it is given by the following formula:

$P = 100\frac{|\sin{\theta} - \theta|}{\sin{\theta}}$

In this problem, the angle is of $\theta = 0.02$ , hence:

$P = 100\frac{|\sin{0.02} - 0.02|}{\sin{0.02}}$

$P = 0.0067$

The percentage error for an angle of 0.02 radians is of 0.0067%.

More can be learned about percent error at brainly.com/question/25224978

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2 years ago

What is 500000000 x 10

lawyer [7]

Hey dude✌✌

Here is your answer⤵⤵⤵

➡500000000*10
➡5,000,000,000

Hope this helps you✨

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3 years ago

A person standing close to the edge on top of a 24-foot building throws a ball vertically upward. The quadratic function h(t)=−1

Nutka1998 [239]

Answer:

a) maximum height is 156.25 ft

b) 6 seconds

Step-by-step explanation:

a) The maximum height can be found by finding the y-coordinate of the vertex. The vertex is the highest point in a parabola opened downward.

I start with by finding the t-coordinate of the vertex.

The t-coordinate of the vertex is $\frac{-b}{2a}$ where the expression $-16t^2+92t+24$ will need to be compared to $at^2+bt+c$ .

We see that $a=-16,b=92,c=24$ .

So the t-coordinate of the vertex is $\frac{-b}{2a}=\frac{-92}{2(-16)}=\frac{-92}{-32}=\frac{23}{8}$ .

We can find the h, the height, that corresponds to this t by using the equation $h=-16t^2+92t+24$ where $t=\frac{23}{8}$ .

So inserting 23/8 for $t$ .

$-16(23/8)^2+92(23/8)+24$

Plugging into calculator gives you 625/4.

So the maximum height is 625/4 or 156.25.

b) Let's find how long it takes the ball to hit the ground. If the ball is on the ground, then the distance between the ball and the ground is 0. So we are looking to solve h(t)=0 for t.

So this is equation we are solving for t:

$-16t^2+92t+24=0$

These numbers are big but since all the terms have a common factor we can make them slightly smaller.

That is, we are going to divide both sides by -4 and see

$4t^2-23t-6=0$

It looks like it could be possible to factor.

a=4

b=-23

c=-6

We need to find two numbers that multiply to be ac and add up to be b.

a*c=4(-6)=-24

b=-23

So -24=-24*1 and -23=-24+1.

We are going to replace -23t with -24t+1t giving up something that should be factorable by grouping.

$4t^2-23t-6=0$

$4t^2-24t+1t-6=0$

Group the first 2 together and group the last two together:

$(4t^2-24t)+(1t-6)=0$

Factor what you can from each pair:

$4t(t-6)+1(t-6)=0$

Now each term has a common factor of (t-6) so factor that out giving you:

$(t-6)(4t+1)=0$

Set both factors equal to 0 giving you

t-6=0 or 4t+1=0

t=6 or 4t =-1

t=6 or t=-1/4

So it hit the ground in 6 seconds.

8 0

4 years ago

<img src="https://tex.z-dn.net/?f=%28-4%29%28-2%29-6%282-5%29" id="TexFormula1" title="(-4)(-2)-6(2-5)" alt="(-4)(-2)-6(2-5)" al

solong [7]

Answer:

General Formulas and Concepts:

Order of Operations: BPEMDAS

Step-by-step explanation:

<u>Step 1: Define expression</u>

(-4)(-2) - 6(2 - 5)

<u>Step 2: Evaluate</u>

Parenthesis (Subtract): (-4)(-2) - 6(-3)
Multiply: 8 + 18
Add: 26

4 0

3 years ago