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3 years ago

If 100ml of ant poison is mixed with 1,5 l of water, then what would the

Mathematics

1 answer:

max2010maxim [7]3 years ago

3 0

Answer:

1 : 15

Step-by-step explanation:

1,5 l of water = 1500 ml water

poison : water = 100 : 1500 = 1 : 15

Answer: 1 : 15

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Verify identity list steps. Cot(t)(1-cos^2(t))=cos(t)sin(t)

storchak [24]

Remember: We have to work from either the LHS or the RHS.
(Left hand side or the Right hand side)

You should already know this:

$\huge{Cot(t) = \frac{1}{tan(t)} = \frac{1}{\frac{sin(t)}{cos(t)}} = 1\div \frac{sin(t)}{cos(t)} = 1\times \frac{cos(t)}{sin(t)}=\boxed{\frac{cos(t)}{sin(t)}}$

You should also know this:

$sin^2(t) + cos^2(t) = 1\\\\\boxed{sin^2(t)} = 1 - cos^2(t)$

So plugging in both of those into our identity, we get:

$\frac{cos(t)}{sin(t)}\cdot sin^2(t) = cos(t)\cdot sin(t)$

Simplify the denominator on the LHS (Left Hand Side)

We get:

$cos(t) \cdot sin(t) = cos(t) \cdot sin(t)$

LHS = RHS

Therefore, identity is verified.

4 0

3 years ago

The starting and stopping point for Amir’s run this morning are 0.5 inch apart on the map. If each inch on the map represents 3

Aleonysh [2.5K]

Amir ran 1.5 miles in the morning.

7 0

3 years ago

Read 2 more answers

Wpisz odpowiednie liczby: 1 cm2=...........mm2 9 cm2=...........mm2 5,2 cm2=............mm2 1 dm2 =...........cm2 17dm2=........

Tomtit [17]

Answer:

1 cm^2 = 100 mm^2

9 cm^2 = 900 mm^2

5.2 cm^2 = 520 mm^2

1 dm^2 = 100 cm^2

17 dm^2 = 1700 cm^2

4.3 dm^2 = 430 cm^2

1 m^2 = 10000 cm^2

7 m^2 = 70000 cm^2

2.5 m^2 = 25000 cm^2

1 km^2 = 1000000 m^2

50 km^2 = 50000000 m^2

8.5 km^2 = 8500000 m^2

Step-by-step explanation:

1 cm = 10 mm

1 $cm^{2}$ = 10×10 $mm^{2}$ = 100 $mm^{2}$

9 $cm^{2}$ = 9×100 $mm^{2}$ = 900 $mm^{2}$

5.2 $cm^{2}$ = 5.20×100 $mm^{2}$ = 520 $mm^{2}$

1 dm = 10 cm

1 $dm^{2}$ = 10×10 $cm^{2}$ = 100 $cm^{2}$

17 $dm^{2}$ = 17× 100 $cm^{2}$ = 1700 $cm^{2}$

4.3 $dm^{2}$ = 4.3 × 100 $cm^{2}$ = 430 $cm^{2}$

1 m = 100 cm

1 $m^{2}$ = 100×100 $cm^{2}$ = 10000 $cm^{2}$

7 $m^{2}$ = 7×10000 $cm^{2}$ = 70000 $cm^{2}$

2.5 $m^{2}$ = 2.5×10000 $cm^{2}$ = 25000 $cm^{2}$

1 km = 1000 m

1 $km^{2}$ = 1000×1000 $m^{2}$ = 1000000 $m^{2}$

50 $km^{2}$ = 50×1000000 $m^{2}$ = 50000000 $m^{2}$

8.5 $km^{2}$ = 8.5×1000000 $m^{2}$ = 8500000 $m^{2}$

3 0

4 years ago

An object falls 18ft in 2 seconds. Knowing the distance varies directly with the square of the time of the fall how long does it

AVprozaik [17]

Answer:

t=4.19 seconds

Step-by-step explanation:

Distance varies directly with the square of the time of the fall

It means,

D=kt^2

18ft in 2 seconds

D=kt^2

18=k*2^2

18=4k

k=18/4

=9/2

k=9/2

D=kt^2

D=79feet

79=9/2t^2

t^2=79÷9/2

t^2=79×2/9

=158/9

t=√158/√9

t=12.57/3

t=4.19 seconds

7 0

3 years ago

10(7k+9p+3) I don’t understand

Llana [10]

Answer:

4=0

Step-by-step explanation:

Simplifying

(-9p + 7) + -1(-9p + 3) = 0

Reorder the terms:

(7 + -9p) + -1(-9p + 3) = 0

Remove parenthesis around (7 + -9p)

7 + -9p + -1(-9p + 3) = 0

Reorder the terms:

7 + -9p + -1(3 + -9p) = 0

7 + -9p + (3 * -1 + -9p * -1) = 0

7 + -9p + (-3 + 9p) = 0

Reorder the terms:

7 + -3 + -9p + 9p = 0

Combine like terms: 7 + -3 = 4

4 + -9p + 9p = 0

Combine like terms: -9p + 9p = 0

4 + 0 = 0

4 = 0

Solving

4 = 0

8 0

4 years ago