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3 years ago

Which step comes first? 12÷3•(15-6)+3

2 answers:

5 0

1. The Parentheses
2. The Exponents
3. The Multiplication
4. The Division
5. The Addition
6. The Subtraction
(In the case of this problem by following these steps the answer would be 39.)

bagirrra123 [75]3 years ago

3 0

Pemdas

Parentheses
Exponents
Multiply
Divide
Add
Subtract

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Your friend claims that it is possible to draw a right triangle where the cosine of either angle (theta) is exactly the same val

avanturin [10]

Answer:

B. No

$Cos \ \theta\neq Cos (90-\theta)\textdegree$

Step-by-step explanation:

-A right angle triangle has two complimentary acute angles and one right angle.

- $\theta$ is usually one of the acute angles and is equivalent to 90º minus it's complimentary acute angle.

-Complimentary angles add up to 90º.

#For complimentary angles:

$Sin \ \theta=Cos \ (90-\theta)\textdegree\\\\Cos \ \theta=Sin(90-\theta)\textdegree\\\\\therefore Cos \ \theta\neq Cos (90-\theta)\textdegree$

The two acute angles cannot have the same Cosine value.

Hence, she's not correct.

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3 years ago

The diagonal of rectangle ABCD measures 2 inches in

ryzh [129]

Answer:

B. √3

Step-by-step explanation:

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3 years ago

10x+20=7x-8<br><br> Solve for x.

Kazeer [188]

Step-by-step explanation:

Isolate the variable

10x - 7x = -20 - 8

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x = -9.333333333333

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3 years ago

A player shoots a basketball from a height of 6 feet. The equation, h = -16t^2 + 25t + 6, gives the height, h , of the basketbal

noname [10]

Answer:

$\boxed {\boxed {\sf 7.5 \ feet}}$

Step-by-step explanation:

We are given this function for the height (h) after t seconds:

$h=-16t^2+25t+6$

Seconds is t and we want to find the height after 1.5 seconds. Plug 1.5 in for t.

$h= -16(1.5)^2+25(1.5)+6$

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Solve the exponent first.

(1.5)²= 1.5*1.5=2.25

$h= -16(2.25)+25(1.5)+6$

Multiply.

$h= -36+25(1.5)+6$

$h= -36+37.5+6$

Add.

$h=1.5+6=7.5$

This is already rounded to the nearest tenth, so it is the answer.

After 1.5 seconds, the basketball is at a height of 7.5 feet.

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3 years ago

A 12-foot long ladder is leaning against a wall. It make sure an angle of 40 degrees with the ground. write an equation that can

Olin [163]

Answer:

I think it is 11 Feet

Step-by-step explanation:

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3 years ago

Which step comes first? 12÷3•(15-6)+3​

Which step comes first? 12÷3•(15-6)+3