2 years ago

Can someone help me with these 2 questions please 100% correct only

Mathematics

1 answer:

marin [14]2 years ago

5 0

The first one is h+(h+2.5)=22

The second one is w(w+8)=48

not sure about the second one but the first one I am 100% sure about.

You might be interested in

If a storm window has an area of 448 square inches, what are the dimensions if the window is 12 inches higher than it is wide (w

Sholpan [36]

16*28=448
28 is 12 inches higher than 16 so it should work.

5 0

3 years ago

Read 2 more answers

What are the roots of x in -10x2 + 12x − 9 = 0?

hoa [83]

Answer:

$x_1=\frac{3(2+i\sqrt{6})}{10}$

$x_2=\frac{3(2-i\sqrt{6})}{10}$

Step-by-step explanation:

Use the Quadratic formula:

$x=\frac{-b\±\sqrt{b^2-4ac}}{2a}$

You can identify that, in this case:

$a=-10\\b=12\\c=-9$

Now you need to substitute these values into the formula:

$x=\frac{-12\±\sqrt{12^2-4(-10)(-9)}}{2(-10)}$

$x=\frac{-12\±\sqrt{-216}}{-20}$

Remember that:

$i=\sqrt{-1}$

Therefore,rewriting and simplifying, you get:

$x=\frac{-12\±6i\sqrt{6}}{-20}$

$x=\frac{-6(2\±i\sqrt{6})}{-2(10)}$

$x=\frac{3(2\±i\sqrt{6})}{10}$

Then, you get the following roots:

$x_1=\frac{3(2+i\sqrt{6})}{10}$

$x_2=\frac{3(2-i\sqrt{6})}{10}$

6 0

2 years ago

Read 2 more answers

The ratio of dog and cat owners is 5 to 6. If there are 36 cat owners, what is the number of dog owners?

Vlad [161]

Answer:

Step-by-step explanation:

5 0

3 years ago

What's the ratio 48:30

Vladimir79 [104]

24:15 would be the simplified version, if that's what you meant.

7 0

3 years ago

Find the 75th term of the arithmetic sequence -1, 15, 31, ...−1,15,31,...

Readme [11.4K]

Answer:

1183

Step-by-step explanation:

Common difference:

d = 31 - 15 = 16

nth term:

$a_n = a_1 + (n - 1)d$

Here, $a_1 = -1$

$a_{75} = -1 + (75 - 1)(16)$

$a_{75} = 1183$

3 0

2 years ago