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3 years ago

Please help me solve my little sister’s math

Mathematics

2 answers:

ziro4ka [17]3 years ago

6 0

The first one or right.... hope that helps

RUDIKE [14]3 years ago

4 0

Answer:Can you show the answers?

Step-by-step explanation: I can solve it

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solong [7]

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3 years ago

Answer 2 + 2 = free point

madreJ [45]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

diamong [38]

ANSWER

$x = - 2 \pm i$

EXPLANATION

We use the method of completing the squares.

The equation is
$3 {x}^{2} = - 12x - 15$

We rewrite the above equation to obtain;

$3 {x}^{2} + 12x = - 15$

We divide through by 3 to obtain;

${x}^{2} + 4x = - 5$

We add half the coefficient of
$x$

to both sides of the equation to get,

${x}^{2} + 4x + {2}^{2} = - 5 + {2}^{2}$

The right hand side is now a perfect square.

${(x + 2)}^{2} = - 1$

We now take square root of both sides to get;

$x + 2 = \pm \sqrt{ - 1}$

We add -2 to both sides,

$x = - 2 \pm \sqrt{ - 1}$

We simplify to obtain,

$x = - 2 \pm i$

3 0

3 years ago

Jonas savings increase by 0.15% in one month. Write 0.15% as a decimal and fraction in simplest form

Vilka [71]

0.15 as a decimal, and 3/20 as a fraction

3 0

4 years ago

PLEASE HELP 7TH GRADE MATH

Contact [7]

Answer:

Slope=-3/4

Step-by-step explanation:

The slope is the rise/run or y/x

Points given for A are (-4, 3), for B (4, -3)

The formula for slope is m=y^2-y^1/x^2-x^1

https://calcworkshop.com/graphing-linear-equations/slope-formula/

So we'll plug in the information given into the formula.

-4-4/3--3

-8/3+3

-8/6

so our slope is m=-3/4

5 0

3 years ago