3 years ago

3x-2y=4 2x=y+2 Solve by the addition method or substitution method

Mathematics

1 answer:

cupoosta [38]3 years ago

8 0

I used the substitution method and got (0,-2)

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Question : 3/4+ 0.6 = ? 1.15 1.35 1.45 or 1.05

Artyom0805 [142]

we have

$\frac{3}{4} +0.6$

we know that

$\frac{3}{4}=0.75$

and

$0.75=0.40+0.35$

substitute in the expression

$0.40+0.35 +0.6$

$(0.40+0.60)+0.35$

$(1.00)+0.35=1.35$

therefore

<u>the answer is</u>

$1.35$

3 0

3 years ago

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Romeo used a mirror to determine the height of Juliet’s window. He stood 0.5m from the mirror and the mirror is

Volgvan

3. 4m
Explanation:Minus

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2 years ago

Triangle P Q R is shown. The length of P Q is 17, the length of Q R is 15, and the length of P R is 14. Law of cosines: a2 = b2

Maksim231197 [3]

Answer:

P = 57°

Step-by-step explanation:

Given the following :

PQ = 17

QR = 15

PR = 14

Using the cosine formula since the length of the three sides are given:

a2 = b2 + c2 – 2bccos(A)

To find P:

QR^2 = PQ^2 + PR^2 – 2(PQ)(PR)cos(P)

15^2 = 17^2 + 14^2 – 2(17)(14)cos(P)

225 = 289 + 196 - 476 cosP

476*CosP = 485 - 225

476*CosP = 260

CosP = 260/476

CosP = 0.5462184

P = Cos^-1(0.5462184)

P = 56.892029

P = 57°

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3 years ago

Producing a musical costs $88,000 plus $5900 per performance. one sold out performance earns $7500 in revenue. If every performa

yan [13]

X = # of perfomances

y = total amount of money

Income: y = 7500x

Expense: y = 5900x + 88000

Substitution:

7500x = 5900x + 88000

1600x = 88000

x = 55

y = 7500(55) = $412,500

55 performances are needed to break-even.

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3 years ago

A student.masteryconnect.com

Crazy boy [7]

We can’t click on the link maybe take a pic

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2 years ago