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3 years ago

HELP PLEASE AND THANK YOU!!!!

Mathematics

2 answers:

Lady bird [3.3K]3 years ago

6 0

Answer:

the answer is -2.1

Step-by-step explanation:

you get this by putting that -4 where the x is and solving so it would look something like this

1.7x+4.7 for x= -4

1.7(-4) + 4.7

-6.8 + 4.7

-2.1

pashok25 [27]3 years ago

5 0

-2.1

Explanation:

I’ve had this question before! :)

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On March 9, 2018, NCAA fans across the world were shocked when the Retrievers of the University of Maryland, Baltimore County (U

blsea [12.9K]

Answer:

UMBC scored 10,14 and 12 one - point free throws, two point baskets and three point baskets respectively.

Step-by-step explanation:

Let's start defining the variables.

X : ''Number of 1 - point free throws''

Y : ''Number of 2 - point baskets''

Z : ''Number of 3 - point baskets''

UMBC scored a total of 74 points. Therefore,

$X.1+Y.2+Z.3=74$ (I)

Where X.1 represents the total points from 1 - point free throws.

Where Y.2 represents the total points from 2 - point baskets.

And finally Z.3 represents the total points from 3 - point baskets.

Reading the exercise, we can write two more equations :

$Y=Z+2\\Z=X+2$

Let's write Y and X in terms of Z

$Y=Z+2$ (II)

$Z=X+2$ ⇒ $X=Z-2$ (III)

Replacing (II) and (III) in (I) :

$(Z-2).1+(Z+2).2+Z.3=74$

$Z-2+2Z+4+3Z=74$

$6Z+2=74\\6Z=72\\Z=12$

We find that the variable Z is 12. Replacing this value in (II) and (III) ⇒

$Y=12+2=14\\Y=14$

$X=12-2=10\\X=10$

Finally, UMBC scored 10 baskets from 1 - point free throws,14 baskets from of 2 - point and 12 baskets of 3 - point.

We can verify by replacing X = 10 , Y = 14 and Z = 12 in equation (I) :

$10.1+14.2+12.3=74\\10+28+36=74\\74=74$

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3 years ago

Read 2 more answers

Cos xcos y=1/2(sin(x+y)+ sin(x-y))

garri49 [273]

Taking Rhs

1/2 [sin(x+y)+ sin (x-y)]

using sinA + sin B = 2 cos (A+B)/2 cos( A - B)/2

1/2 [ 2 Cos ( x+y+x-y)/2 . Cos (x+y-x+y)/2]

=Cos 2x/2. Cos 2y/2 = Cos x . Cos y

Hence true

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4 years ago

Find the area of a trapezoid if the altitude is 6 inches and the median is 8 inches. (Hint: Recall that the median of a

zlopas [31]

Answer:

48 sq. units

Step-by-step explanation:

The area of a trapezoid is given by half sum of the bases multiplied by the height

$=\frac{1}{2} (a+b)h$

where a and b are the two parallel sides of the trapezoid and h is the height or amplitude of the trapezoid

But you are aware that, the median of a trapezoid is equal to half the sum of the bases, thus the first part of the formulae is covered by the median

$Median=\frac{1}{2} (a+b)$

Hence area, A, of a trapezoid is simplified to product of median and amplitude

$A=amplitude*median\\\\A=6*8=48sq.units$

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4 years ago

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Andrei [34K]

5 and 6 because 5 1/4 = 5.25.
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10-x≤35 someone help me how tot explain this to someone

Olegator [25]

Answer:

Step-by-step explanation:

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3 years ago