3 years ago

PLEASE HELP !! ILL GIVE BRAINLIEST !!

Mathematics

2 answers:

jekas [21]3 years ago

8 0

Answer:

1 and 3, 2 and 4, 1 and 2, 3 and 4

5 and 7, 6 and 8, 5 and 6, 7 and 8

Step-by-step explanation:

Nuetrik [128]3 years ago

3 0

Straight angles are two angles that make up a straight line.
1 & 3, 5 & 7, 2 & 4, 6 & 8
and
1 & 2, 3 & 4, 5 & 6, 7 & 8

Please lmk if you have questions.

You might be interested in

Convert the number in scientific notation to standard notation.<br> <img src="https://tex.z-dn.net/?f=1.8%20%2A%2010%5E6" id="Te

Keith_Richards [23]

The answer is 1000001.8

5 0

3 years ago

Find the real zeros 4x²-16x + 2.5x

Lapatulllka [165]

I am going to assume 2.5x is really 25x (typo).

First formulate the equality

$4x^2-16x+25x=0 \\4x^2+9x=0 \\x(4x+9)=0 \\$

Now two results emerge.

$x_1=0, x_2=-\dfrac{9}{4}$ .

Hope this helps.

8 0

3 years ago

What is the answer for 7-2x=2(x-4)-1

Vaselesa [24]

Answer:

x=4

Step-by-step explanation:

7-2x=2x-8-1--->distributive property

-4x=-16--->subtraction property

x=4--->division property

7 0

3 years ago

Read 2 more answers

Steven must save $240 to attend summer camp next year. He already saved $30 if you earns $14 per week how many weeks must he sav

Anarel [89]

Answer:

11 2/3

Step-by-step explanation:

240-30

210

210/18

3 0

3 years ago

For what value of k are there two complex solutions to the given quadratic equation (k+1)x²+4kx+2=0.

nlexa [21]

Answer: $k\in \left ( \frac{-1}{2},1\right )$

Step-by-step explanation:

Given

$\left ( k+1\right )x^2+4kx+2=0$

For complex roots Discriminant should be zero

D<0

$D=\sqrt{b^2-4ac}$

here

$D=\sqrt{\left ( 4k\right )^2-4\left ( k+1\right )\left ( 2\right )}$

$D=\sqrt{16k^2-8k-8}$

so $16k^2-8k-8$

$2k^2-k-1$

$\left ( 2k+1\right )\left ( k-1\right )$

so $k\in \left ( \frac{-1}{2},1\right )$

3 0

4 years ago