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3 years ago

I need to know this asap

Mathematics

1 answer:

miskamm [114]3 years ago

7 0

Answer:

1, -4.5

Step-by-step explanation:

What do you mean by estimating the solution?

y=-6x+4

x-4(-6x+4)=19

x+24x-16=19

25x=25

x=1

1-4y=19

-4y=18

y=-4.5

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When are x+3 and 3+x equal? When are they not equal?

Vlad1618 [11]

Answer:

when x is any real number

Step-by-step explanation:

commutative property

3 0

2 years ago

In how many ways can a quality-control engineer select a sample of3 transistors for testing frm a batch of 100 transistors?

Advocard [28]

Answer:

161700 ways.

Step-by-step explanation:

The order in which the transistors are chosen is not important. This means that we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

3 transistors from a set of 100. So

$C_{100,3} = \frac{100!}{3!(100-3)!} = 161700$

So 161700 ways.

6 0

2 years ago

Simplify 4x^6/2x^4 step by step please thanks

mrs_skeptik [129]

Ok so you have 4, x^6 / 2, x^4. Now divide the coefficient so 4/2=2. So 2 x^6/x^4, now subtract the numerator by the denominator so x^6-x^4=x^2 so now you have 2x^2

Answer: 2x^2

5 0

2 years ago

Give some examples of perpendicular lines inside or outside your classroom.

DedPeter [7]

Answer:

Roads that meet at intersections in which create a right angle

Hospital crosses.

Step-by-step explanation:

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3 years ago

In ΔTUV, the measure of ∠V=90°, UT = 65, VU = 56, and TV = 33. What ratio represents the cosine of ∠T?

monitta

Answer: The ratio that represents the cosine of ∠T is $\frac{56}{65}$

Step-by-step explanation:

We are given:

UV = 56 units

VT = 33 units

UT = 65 units

∠V = 90°

Cosine of an angle is equal to the ratio of base and the hypotenuse of the triangle. ΔTUV is drawn in the image below.

$\cos \theta=\frac{\text{base}}{\text{hypotenuse}}$

Base of the triangle is UV and the hypotenuse of the triangle is TU

Putting values in above equation, we get:

$\cos \theta=\frac{UV}{TU}=\frac{56}{65}$

Hence, the ratio that represents the cosine of ∠T is $\frac{56}{65}$

6 0

2 years ago