10 point please I need help

Mathematics

2 answers:

tankabanditka [31]3 years ago

8 0

She owns 4 black and 4 gray t-shirts because the ratio is 1:2 before buying, the question said how many Black and gray t-shorts did she buy, and both colors have to be equal, so she will buy 3 gray and 2 black t-shirts.

Enjoy the lesson and I hope your having a good day!

r-ruslan [8.4K]3 years ago

6 0

Answer:

Now has 12 gray t-shirts & 12 black t-shirts

Step-by-step explanation:

Starts out with 1 gray for every 2 blacks. This is a 1:2 ratio. Ends with same number of each. This is a 1:1 ratio. To achieve that ratio she had to by 6 gray shirts.

If she started with 6 gray and 12 black this would fit the 1:2 ratio. If she bought 6 gray and now has 12 gray and 12 black, this would fit the 1:1 ratio.

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The radius of the circular lens of a magnifying glass is 4 centimeters.

Nadusha1986 [10]

Answer: 50.24 square centimeters.

Step-by-step explanation:

Given: The radius of the circular lens of a magnifying glass = 4 centimeters

The area of a circle is given by :-

$\text{Area}=\pi r^2$ , where r is the radius of the circle.

Then the area of the circular lens of a magnifying glass is given by :-

$\text{Area}=\pi (4)^2=(3.14)(16)=50.24\text{ square centimeters }$

Hence, the area of the circular lens of a magnifying glass = 50.24 square centimeters.

5 0

3 years ago

Find the angle measurements of the intersections for the two equations f(x) = 4x - 5 and g(x) = 2x^2 - 5.

murzikaleks [220]

Answer:

76° is the other one

Step-by-step explanation:

nope, no precise calculation here. the option are thankfully enough apart that solving it graphically is just fine. look at the screenshot. the upper intersection is the one with the 7° angle

the lower one is somewhat less than 90° :P