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3 years ago

((pls help a girl out!!))

Mathematics

2 answers:

Dahasolnce [82]3 years ago

8 0

Answer:

1) Let's make sure we understand the word problem first. You send 12 texts a day, and your older sister sends more texts than you do. So overall you and your sister together send 26 text messages per day, which indicates subtraction.

26 - 12 = 14.

Your sister sends 14 texts per day.

2) So I'll assume you are connecting this to the problem above. Your father sends 19 messages per day, and u send 12 messages per day. HOW MANY MORE indicates subtraction.

19 - 12 = 7.

Your father sends 7 more texts than you do per day.

3) Alright, lets problem. The bill per week is $17.50, and there is 7 days in a week. So lets divide 7 by $17.50 since we need to know how much to save up per day.

17.50 ÷ 7 = $2.5.

You need to save $2.5 per day to pay the bill.

mr Goodwill [35]3 years ago

7 0

Answer: 1. 26-12=14

2. 19-12=7

3. 17.50 divided by 7=2.5

Step-by-step explanation:

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If m1=2x° and m3=3x° what is m1

olga_2 [115]

Answer:

Step-by-step explanation:

Using the angle addition postulate

angle 1+angle 2+angle 3=180

Angle 2 is 90 degrees,

Angle 1 is 2x degrees

Angle 3 is 3x degrees

Plug this into equation

$2x + 90 + 3x = 180$

$5x + 90 = 180$

$5x = 90$

$x = 18$

Plug 18 into 2x

$2(18) = 36$

5 0

3 years ago

Solve the following: a. 4x^2 + 5x + 3 = 2x^2 − 3x b. c^2 − 14 = 5c

Jet001 [13]

Answer:

(a) x = -0.418 , -3.581

(B) c = 6.855, -1.855

Step-by-step explanation:

(A) We have given equation $4x^2+5x+3=2x^2-3x$

$2x^2+8x+3=0$

On comparing with standard quadratic equation $ax^2+bx+c$

a = 2, b = 8 and c = 3

So roots of the equation will be $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-8\pm \sqrt{8^2-4\times 2\times 3}}{2\times 2}=\frac{-8\pm 6.324}{4}=-0.418,-3.581$