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2 years ago

7

Amy is scuba diving. She starts at – 15.5 m relative to the ocean surface. She swims

1 answer:

solniwko [45]2 years ago

3 0

Answer:

-9.85

Step-by-step explanation:

-15.5 - 4.2 = -19.7

Negatives work like positives

19.7 / 2 = 9.85

Turn that into a negative

-9.85

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-<br> I<br> dot<br> Multi-step aquations

BlackZzzverrR [31]

1) $a= -1$ , 2) $n=-2$

3) $x=4$ , 4) $n=0$

5) $r=1$ , 6) $r=2$

7) $No\,\,solution$ , 8) $p=-12$

9) $m=2$ , 10) $a=-3$

11) $x=4$ 12) $n=-2$

Step-by-step explanation:

We need to solve each equation.

1) $6a+5a = -11$

Solving:

Adding like terms:

$11a = -11$

Divide both sides by 11

$a= -1$

2) $-6n-2n=16$

Solving:

Adding like terms:

$-8n=16$

Divide by -8

$n=-2$

3) $4x+6+3=17$

Solving:

Adding like terms:

$4x+9=17$

Subtract 9 on both sides:

$4x=17-9$

$4x=8$

Divide both sides by 4

$x=4$

4) $0=-5n-2n$

Solving:

$0=-7n$

Divide both side by -7

$n=0$

5) $6r-1+6r=11$

Solving:

12r-1=11

Adding 1 on both sides

$12r=12$

Divide both sides by 12

$r=1$

6) $r+11+8r=29$

Solving:

$9r+11=29\\9r=29-11\\9r=18\\r=2$

7) $-10=-14v+14v$

Solving

$-10=-14v+14v\\-10\neq 0\\No\,\,solution$

8) $-10p+9p=12$

Solving:

$-10p+9p=12\\-p=12\\p=-12$

9) $42=8m+13m$

Solving:

$42=8m+13m\\42=21m\\m=42/21\\m=2$

10) $a-2+3=-2$

Solving:

$a-2+3=-2\\a+1=-2\\a=-2-1\\a=-3$

11) $18=3(3x-6)$

Solving:

$18=3(3x-6)\\18=9x-18\\18+18=9x\\36=9x\\x=36/9\\x=4$

12) $30=-5(6n+6)$

Solving:

$30=-5(6n+6)\\30=-30n-30\\30+30=-30n\\60=-30n\\n=60/-30\\n=-2$

Keywords: Solving Polynomials

Learn more about solving Polynomials at:

#learnwithBrainly

8 0

3 years ago

Solve the following system by any method–3x 5y = –94x 8y = 12

Kay [80]

The answer is (3, 0)

Hope this helps! :D

7 0

3 years ago

1. The angle of depression from the top of the

STatiana [176]

Answer:

41.7feet

Step-by-step explanation:

From the question we are given the following

angle of depression = 50°

Distance of the pole from the base of the feet = 35feet (Adjacent)

Required

height of the school (opposite)

Using the SOH CAH TOA identity

Tan theta = opp/adj

Tan 50 = H/35

H = 35tan 50

H = 35(1.1918)

H = 41.7feet

Hence the height of the school is 41.7feet

3 0

2 years ago

\Which expression is equivalent to Negative 2 and one-fourth divided by negative two-thirds?

eduard

Answer:

See below

Step-by-step explanation:

Not sure which answer it is because it did not translate well

(2 1/4 ) / (-2/3) = (9/4) / ( -2/3) = 9/4 * (-3/2) = -27/8 <====maybe your answer is in there somewhere?

4 0

1 year ago

Brainers, please help me

Jet001 [13]

-2 4/6 ÷ -2/3=

-16/6 * -3/2=48/12= 4

3 0

2 years ago