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3 years ago

Simply 3-[-(-1)] a.4 b. -4 c.2 d. -2

Mathematics

2 answers:

Dovator [93]3 years ago

7 0

C.2 will be your answer to show your work 3-[-(-1)] 3+-1 =2

OleMash [197]3 years ago

6 0

C) 2 would be your answer

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Help me mathematics

Ede4ka [16]

Answer:AB=15 ,angle A=53.1°,angle B=36.9°

Step-by-step explanation:

AB=√(12^2+9^2)

AB=√(12x12+9x9)

AB=√(144+81)

AB=√(225)

AB=15

TanA=12/9

TanA=4/3

A=Tan(inverse)(4/3)

A=53.1° angle A=53.1°

angle B=180-(90+53.1)

angle B=180-143.1

angle B=36.9°

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4 years ago

What is the area of the triangle? 3, 6, 6.7

daser333 [38]

Answer:

A=12bh

Step-by-step explanation:

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3 years ago

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Simplify (sin^2 0+cos^2 0) (sin 0+cos 0)<br> Can someone help? I don’t understand.

lyudmila [28]

Answer:

C) $sin\theta+cos\theta$

Step-by-step explanation:

$(sin^2\theta+cos^2\theta)(sin\theta+cos\theta)$

$sin\theta+cos\theta$

Recall the Pythagorean Trigonometric Identity where $sin^2\theta+cos^2\theta=1$ , so $1(sin\theta+cos\theta)=sin\theta+cos\theta$

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3 years ago

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What is the expanded form of this number?<br><br> 18.029

KatRina [158]

Step-by-step explanation:

18.029= (1×10)+(8×1)+(2×1100)+(9×1100)

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3 years ago

Ana dives into a pool off of a springboard high dive. Her height (in meters above the water), x xx seconds after diving, is mode

vovikov84 [41]

Answer: Ana will hit the water after 3 seconds.

Step-by-step explanation:

The exercise gives you the following function which models Anna's height above the water (in meters) after diving "x" seconds:

$h(x)=-5(x+1)(x-3)$

You can rewrite the function with $h(x)=y$ :

$y=-5(x+1)(x-3)$

In order to calculate the number of seconds Ana will hit the water after diving, the procedure is:

- Substitute $y=0$ into the function:

$0=-5(x+1)(x-3)$

- Solve for "x".

By the Zero Product Property, you know that if $a* b = 0$ , then $a=0$ or $b=0$ .

Then you get:

$x=-1\ or\ x=3$

- Choose the positive value ( $x=3$ )

Then, Ana will hit the water after 3 seconds.

6 0

4 years ago