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2 years ago

What value of y makes the equation true? -7/12=y/-36

Mathematics

1 answer:

STALIN [3.7K]2 years ago

7 0

-7/12=y/-36
times both sides by -36 (-36=12*-3)
-3*-7=y
21=y

y=-21

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Help on the second graph

Deffense [45]

Answer:

first graph:

function.

Not one-one

onto

Second graph:

Function

one-one

not onto.

Step-by-step explanation:

We know that a graph is a function if any vertical line parallel to the y-axis should intersect the curve exactly once.

A graph is one-one if any horizontal line parallel to the x-axis or domain should intersect the curve atmost once.

and it is onto if any horizontal line parallel to the domain should intersect the curve atleast once.

Hence, from the first graph:

if we draw a vertical line parallel to the y-axis then it will intersect the graph exactly once. Hence, the graph is a function.

But it is not one-one since any horizontal line parallel to the domain will intersect the curve more than once.

But it is onto, since any horizontal line parallel to the domain will intersect the curve atleast once.

Second graph

It is a function since any vertical line parallel to the co-domain will intersect the curve exactly once.

It is not one-one since any horizontal line parallel to the x-axis does not intersect the graph atmost once.

It is not onto, since any horizontal line parallel to the domain will not intersect the curve atleast once.

7 0

2 years ago

Find the zeros of polynomial function and solve polynomials equations. f(x)=24x^3-64x^2-21x+56

8090 [49]

Since this polynomial has 4 terms, factoring by grouping should be the first thing we try here.

So, we have:

$8x^2(3x-8)-7(3x-8)=0 \implies\\ (8x^2-7)(3x-8)=0$

So, we can use ZPP to find out roots:

$3x-8 =0 \implies\\ x=\frac{8}{3}\\ 8x^2-7=0 \implies \\ 8x^2=7 \implies \\ x^2=\frac{7}{8} \implies \\ x=\pm\frac{\sqrt{7}}{\sqrt{{8}}}\\ \text{Rationalizing denominator:}\\ x=\pm\frac{\sqrt{56}}{8}$

So our three roots are:

$x \in \{\frac{8}{3},\frac{\sqrt{56}}{8},-\frac{\sqrt{56}}{8}\}$

8 0

2 years ago

Solve for x. x+5/8=7/6

agasfer [191]

Answer:

$x + \frac{5}{8} = \frac{7}{6}$

$x = \frac{7}{6} - \frac{5}{8}$

$x = \frac{13}{24}$

4 0

2 years ago

Read 2 more answers

2) 4 tot he power of 3 = _______

Ghella [55]

Answer:

Step-by-step explanation:

4^3=64

4*4=16

16*4=64

8 0

2 years ago

Whats the <img src="https://tex.z-dn.net/?f=whats%20the%20degree%20term%20for%20-8x%5E%7B3%7D" id="TexFormula1" title="whats the

N76 [4]

In the given term $-8x^3$ the degree is 3

Step-by-step explanation:

We need to find the degree of the term $-8x^3$

The degree of the term is equal to the highest power of the non-zero co-efficient

So, in the given term $-8x^3$ the degree is 3

Keywords: Degree of terms

Learn more about the Degree of terms at:

#learnwithBrainly

5 0

2 years ago