2 years ago

Can someone help me please :(

Mathematics

1 answer:

AleksAgata [21]2 years ago

5 0

Sure honestly don’t know this

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Find cos(ZA).<br> Choose 1 answer:

lbvjy [14]

Answer: option A. 24 / 25

Step-by-step explanation:

Cos (Z) = Adj / Hypo

Cos (Z) = 24 / 25

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3 years ago

Which of these ratios are equivalent ratio<br> 1:4 2:8 3:6 7:28

Harrizon [31]

Answer:

1:4

2:8

7:28

Step-by-step explanation:

1:4
2:8 , 1:4
7:28, 1:4

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1 year ago

a recipe calls for 6 cups of water and 4 cups of flour. if the recipe is decreased to use 2 cups of water, how much flour should

Len [333]

$\frac{6}{4}=\frac{2}{f}\\\frac{3}{2}=\frac{2*\frac{3}{2}}{f*\frac{3}{2}}\\\frac{3}{2}=\frac{3}{\frac{3}{2}f}\\2=\frac{3}{2}f\\2*\frac{2}{3}=\frac{3}{2}f*\frac{2}{3}\\\frac{4}{3}=f$

1 1/3 cups of flour

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2 years ago

A 10ft by 20ft rectangular swimming pool is surrounded by a walkway of uniform width. If the total area of the walkway is 216ft^

Dmitry [639]

check the picture below.

so, we know the dimensions of the pool, is a 20x10, so its area is simply 200 ft², and we know the walkway is 216 ft², so the whole thing, including pool and walkway is really 200 + 216 ft².

now, as you see in the picture, the dimensions for the combined area is 20+2x and 10+2x, since the walkway is "x" long, therefore,

$\bf \stackrel{length}{(20+2x)}\stackrel{width}{(10+2x)}=200+216\implies \stackrel{FOIL}{4x^2+60x+200}=200+216 \\\\\\ 4x^2+60x=216\implies \stackrel{dividing~by~4}{x^2+15x=54} \\\\\\ x^2+15x-54=0\implies (x+18)(x-3)=0\implies x= \begin{cases} -18\\ \boxed{3} \end{cases}$

notice, it cannot be -18, since is a positive length unit.

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2 years ago

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Rewrite the equation of the circle (x-2)^2+y^2=3 in general form

Oksi-84 [34.3K]

Step-by-step explanation:

x²+4-4x+y²=3

x²+y²-4x+1=0

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3 years ago

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