All categories

3 years ago

URGENT HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

kari74 [83]3 years ago

6 0

Answer: a=−2.3

a+0.3=-2 : a=-2.3

a+0.3=-2 = a=-2.3

Subtract 0.3 from both sides

a+0.3-0.3=-2-0.3

Simplify

a=-2.3

True [87]3 years ago

3 0

a+0.3=−2
a = - 2 - 0.3
a = - 2.3

answer is a. a=−2.3 first choice

You might be interested in

1/2 - 20 [ 14- 3 4/15] / 6/5 ^2

lidiya [134]

Step-by-step explanation:

hope it's helpful for you

6 0

3 years ago

Estimate the side length of a square that has a 9cm long diagonal

Fittoniya [83]

S^2 + s^2 = 9^2 => 2s^2 = 81 => s^2 = 81/2 => side length s = 9(sqrt(2))/2 = 6.37 cm.

7 0

3 years ago

Read 2 more answers

7/2x + 1/2x = 7 + 9/2x

lesya [120]

Answer: x=-14

Step-by-step explanation:

5 0

1 year ago

Solve the equation x+3/x-4 = x-5/x+4

Serga [27]

Answer:

$\large\boxed{x=\dfrac{1}{2}}$

Step-by-step explanation:

$\dfrac{x+3}{x-4}=\dfrac{x-5}{x+4}\\\\\text{Domain:}\ x-4\neq0\ \wedge\ x+4\neq0\\\\x\neq4\ \wedge\ x\neq-4\\\\D:x\in\mathbb{R}-\{-4,\ 4\}$

$\dfrac{x+3}{x-4}=\dfrac{x-5}{x+4}\qquad\text{cross multiply}\\\\(x+3)(x+4)=(x-4)(x-5)\qquad\text{use FOIL}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(x)(x)+(x)(4)+(3)(x)+(3)(4)=(x)(x)+(x)(-5)+(-4)(x)+(-4)(-5)\\\\x^2+4x+3x+12=x^2-5x-4x+20\qquad\text{combine like terms}\\\\x^2+(4x+3x)+12=x^2+(-5x-4x)+20\\\\x^2+7x+12=x^2-9x+20\qquad\text{subtract}\ x^2\ \text{from both sides}\\\\7x+12=-9x+20\qquad\text{subtract 12 from both sides}\\\\7x=-9x+8\qquad\text{add}\ 9x\ \text{to both sides}\\\\16x=8\qquad\text{divide both sides by 16}\\\\x=\dfrac{8}{16}\\\\x=\dfrac{8:8}{16:8}\\\\x=\dfrac{1}{2}\in D$

7 0

3 years ago

Someone plz help to become brainliest and get points !! :) plz answer truthfully

AVprozaik [17]

Answer:

Step-by-step explanation:

The volume (V) of a rectangular prism is calculated as

V = length × width × height

Calculate the volume of each prism

Q → V = 8 × 4 × 5 = 60 ft³

R → V = 6 × 7 × 12 = 504 ft³

S → V = 4 × 10 × 12 = 480 ft³

T → V = 2 × 13 × 5 = 130 ft³

Prism R has the greatest volume → B

5 0

3 years ago