Hey can some one please help

Mathematics

1 answer:

sineoko [7]3 years ago

6 0

Answer:

Step-by-step explanation:

< means open circles

x-21<3 x≥21

-x+21<3 x<21

18<x<21 and 21≤x24

so the union of will be 18<x<24

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Evaluate: sin (225degree)

PtichkaEL [24]

Sin(225)

225 degrees is in the 3rd quadrant. And in the third quadrant only tangent is positive, sin is negative.

For third quadrant, basic angle = 225 - 180 = 45

sin225 = - sin45

sin225 = - sin45 = -0.7071

sin 225° ≈ -0.7071

7 0

2 years ago

For every pizza Caron's family ate, Caron ate 2 of the 8 slices. If Caron's family brought 4 pizzas, write the ratio of the tota

horrorfan [7]

Answer:

$\frac{8}{32}$

Step-by-step explanation:

2×4=8

Caron are a total of 8 slices.

8×4=32

There were 32 slices between all 4 pizzas.

5 0

2 years ago

I actually don’t understand this can someone please help?

Rufina [12.5K]

Answer:

It's proportional when you have a straight line that goes through the origin, meaning (0,0), meaning x = 0 and y = 0, meaning: when x = 0, then y has to be = 0 too! That's obviously not the case here. You can see that the line hit the y axis way above 0. So this graph is not directly proportional to x.

Step-by-step explanation:

4 0

2 years ago

A candy distributor needs to mix a 30% fat-content chocolate with a 40% fat-content chocolate to create 150 kilograms of a 32% f

Ber [7]

Answer:

120 kg of 30% fat-content chocolate and 30 kg of 40% fat-content chocolate.

Step-by-step explanation:

We are given that a candy distributor needs to mix a 30% fat-content chocolate with a 40% fat-content chocolate to create 150 kilograms of a 32% fat-content chocolate.

Let the amount of 30% fat-content chocolate be 'x' and the amount of 40% fat-content chocolate be 'y'.

So, according to the question;

x + y = 150 ------------ [equation 1]

and $30\% \text{ of } x + 40\% \text{ of } y=32\% \text{ of } 150$