3 years ago

Anybody know the answer to 4 and 5 I really could use some help

Mathematics

1 answer:

Elena-2011 [213]3 years ago

4 0

The first one you are looking for perimeter. So, 2+2+2+2 = 8

The second one is area = b x h so you get 600

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In the circle, AB=42,BC=18, and CD=4. The diagram is not drawn to scale.

Monica [59]

The picture in the attached figure

we know that
The Intersecting Secants Theorem, states that
''If two secant segments are drawn to a circle from an exterior point, then the product of the measures of one secant segment and its external secant segment is equal to the product of the measures of the other secant segment and its external secant segment''
so
in this problem
(x+DC)*DC=(AB+BC)*BC
AB=42
BC=18
CD=4
(x+4)*4=(42+18)*18
4x+16=1080
4x=1080-16
x=1064/4
x=266

the answer is
x=266

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3 years ago

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vodomira [7]

Can u be more precise with the question???

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3 years ago

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salantis [7]

1 km = 1000 m

so 36km x 1000 = 36000 meters per hour

there are 3600 seconds per hour

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4 years ago

A candy distributor needs to mix a 10% fat-content chocolate with a 40% fat-content chocolate to create 100 kilograms of 22% fat

muminat

Let n be the 40%, and 100-n be the 10%. Then:
.4n+.1(100-n)=.22(100)
.3n+10=22
.3n=12
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4 years ago