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3 years ago

Can someone plz help me with this?

Mathematics

1 answer:

Anettt [7]3 years ago

3 0

Answer:

Step-by-step explanation:

because the odds have to be even if the possobility number is even

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One leg of a 45°-45°-90° triangle is 9. Find the lengths of the other sides.

Sergio039 [100]

Answer:

9, 9√2

Step-by-step explanation:

The ratios of side lengths in a 45°-45°-90° triangle are ...

1 : 1 : √2

The other leg is the same as the first, and the hypotenuse is √2 times that.

The other sides are 9 and 9√2.

3 0

2 years ago

A particular metal alloy a has 20% iron and another alloy b contains 60% iron. how many kilograms of each alloy should be combin

Veronika [31]

Let t and s represent the masses of 20% and 60% alloys respectively.

t+s=80, s=80-t

(0.2t+0.6s)/80=0.52 multiply both sides by 80

0.2t+0.6s=41.6, now using s=80-t in this equation gives us:

0.2t+0.6(80-t)=41.6 perform indicated multiplication on left side

0.2t+48-0.6t=41.6 combine like terms on left side

-0.4t+48=41.6 subtract 48 from both sides

-0.4t=-6.4 divide both sides by -0.4

t=16, since s=80-t

s=64

So 16kg of 20% alloy is mixed with 64kg of 60% allow to make 80kg of a 52% alloy.

5 0

4 years ago

How many sides does a regular polygon have if one exterior angle is 1 degree

Mariulka [41]

Answer:

The number of sides are 360

Step-by-step explanation:

We are given

exterior angle is 1 degree

Firstly, we will find interior angle

interior angle = 180 - exterior angle

we can plug value

interior angle = 180 - 1

interior angle = 179

now, we can use formula

$\frac{180(n-2)}{n}=\theta$

now, we can plug angle

$\frac{180(n-2)}{n}=179$

now, we can solve for n

$180\left(n-2\right)=179n$

$180n=179n+360$

$n=360$

So,

The number of sides are 360

5 0

3 years ago

Please answer. I have attached the picture of the question and I promise I will give brainliest.

Vaselesa [24]

Answer:

first is the chart so for the time row its 4, 8, 12, 16, 20 & distance is 3, 6, 9, 12, 15

I added the complete graph down below, basically what i did wasplot the points from the chart so (4,3), (8,6), (12,9), (16, 12), and (20,15)

so for example for (4,3) you would first find 4 on the x-axis or the time line and then find 3 on the y-axis and so on let me know if you can see the picture:)

8 0

3 years ago

If I have 18 credits and need 23 to graduate high school how many semesters do I need to take? one or two???

sammy [17]

Depending on what classes, most likely one.

7 0

3 years ago