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3 years ago

6

Explain the answer with briefs steps

1 answer:

aliina [53]3 years ago

6 0

Step-by-step explanation:

steps are in picture above.

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thirteen of 50 states in the united states do not touch the ocean. write 13/50 as a decimal and percent

SOVA2 [1]

To find decimal, divide 13/50= 0.26

To find percent divide decimal above by 100 (or move decimal place to the right two places).

0.26/100= 26%

Hope this helps! :)

8 0

3 years ago

Which of these number is irrational?<br><br> a) 9.6<br> b) √45 <br> c) 3/8<br> d) 3.4 x 10 ⁵

bearhunter [10]

Answer:

I think (D)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Can someone explain to me how to solve this equation<br>15x +-6 = 8

soldier1979 [14.2K]

Answer:

x=0.933333

Step-by-step explanation:

First you add 6 to both sides of the equation

15x - 6 + 6 = 8 +6

That gives you 15x = 14

Then you divide 15 on both sides of the equation

That gives you x = 14/15 = 0.93333

8 0

4 years ago

Read 2 more answers

Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,

Tresset [83]

Answer:

$\boxed{y=2x^2+4x-7}$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

We substitute $(-4,9)$ into the equation to obtain;

$9=a(-4)^2+b(-4)+c$

$\Rightarrow 9=16a-4b+c---(1)$

We substitute $(0,-7)$ to obtain;

$-7=a(0)^2+b(0)^2+c$

$\Rightarrow c=-7---(2)$

We finally substitute $(1,-1)$ to obtain;

$-1=a(1)^2+b(1)^2+c$

$\Rightarrow -1=a+b+c---(3)$

We put equation (2) into equation (1) to get;

$9=16a-4b-7$

$16a-4b=16$

$\Rightarrow 4a-b=4---(4)$

$\Rightarrow -1=a+b-7$

$\Rightarrow a+b=6---(5)$

We add equation (4) and (5) to get;

$4a+a=6+4$

$\Rightarrow 5a=10$

$\Rightarrow a=2$

We put $a=2$ into equation (5) to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The reqiured quadratic function is

$y=2x^2+4x-7$

7 0

3 years ago

Find the solution to the system:<br>( 6(x +y)-y--1<br>| 7(y +4)–(y + 2)=0<br><br><br>plssss help

siniylev [52]

Answer:

the answer to the questions are x, 4 and y=7

4 0

3 years ago