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castortr0y [4]
2 years ago
8

I need help with this I don't understand

Mathematics
1 answer:
ehidna [41]2 years ago
5 0

Answer:

Sin ? = 4/7

? = arcSin (4/7)

? = 35° (rounded to the nearest degree)

So the answer is 35°

Answered by GAUTHMATH

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. Mrs. Huang operates a soybean farm. She buys many supplies in bulk. Often the bulk products need to be custom mixed before Mrs
dimulka [17.4K]

Answer:

18 L

Step-by-step explanation:

Given :  she must mix a solution of 67% herbicide with a solution of 46% herbicide to form 42 liters of a 55% solution.

To Find: How much of the 67% solution must she use?

Let x = amount of 67% solution needed

Then 42-x=amount of 46% solution needed

Now we know that the pure herbicide in the 67% solution

So, pure herbicide = (0.67x)

The amount of pure herbicide in the 46% solution (0.46(42-x))

Now 42 liters of a 55% solution = (0.46(42-x))

So,

Amount of 67% solution + Amount of 46% solution  = 42 liters of a 55% solution

⇒0.67x+0.46(42-x)=0.55*42  

⇒0.67x+19.32-0.46x=23.1

⇒0.21x=3.78

⇒x=\frac{3.78}{0.21}

⇒x = 18 liters

Hence she use 18 liters of the 67% solution

5 0
3 years ago
Read 2 more answers
What fraction did she spend on petrol ,she spent £30 on petrol in total ,how much did she spend
barxatty [35]
If there is a graph or something that you can show me, I'd be more than happy to help you.
4 0
3 years ago
A light bulb's brightness is reduced when placed behind a screen. The amount of visible light produced by the light bulb decreas
Rom4ik [11]

Answer:

B

Step-by-step explanation:

L=750(0.25)×

PLEASE MARK ME AS BRAINLIST

7 0
1 year ago
Find the circumference.<br> Use 3.14 for it.<br> r = 5 cm<br> C = [?] cm<br> C= Ttd
azamat

Answer:

C=2(3.14)×(5)

C=31.4cm

3 0
2 years ago
It has been estimated that the population of Indianapolis is growing at a rate of 0.9% per year. Assuming that population growth
Mumz [18]

Answer:

<em>2,136,605</em>

<em />

Step-by-step explanation:

To estimate growth, we use the formula shown below:

F=P(1+r)^t

Where

F is the future amount (we want to find for Jan 2024)

P is the present amount (present population of 1,988,817)

r is the rate of growth (0.9% means 0.009)

t is the time in years (from Jan 2016 to Jan 2024 is 8 years, t = 8)

<em>Let's put these into the formula and figure out F:</em>

<em>F=P(1+r)^t\\F=1,988,817(1+0.009)^8\\F=2,136,604.5</em>

<em />

<em>Rounding we get the population in Jan 2024 to be </em><em>2,136,605</em>

3 0
3 years ago
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