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3 years ago

Given the matrix equation AX + B = C

Mathematics

1 answer:

Jobisdone [24]3 years ago

8 0

Answer:

A(BC) = (ABC. AI = JA = A

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Given: x + 5 ≥ 10. Choose the graph of the solution set.

gizmo_the_mogwai [7]

Let's solve the inequality. Subtract 5 from both sides. The result will be

x ≥ 5. This states, "x is equal to or greater than 5."

Plot 5 on the number line, using a dark solid dot. Then draw an arrow from that point to the right.

3 0

3 years ago

Read 2 more answers

It is a polynomial or not write step in step

galben [10]

Answer:

√(3x)-2y+7

here √(3x) means, √3×√x

√x = x^(1/2)

now, now the exponent is 1/2, which means it's not a polynomial

5 0

3 years ago

Which of the following numbers is between 5 and 10 on a number line? Select two that apply.

jonny [76]

Answer:

√38 , √44

Step-by-step explanation:

√25 = 5 and √100 = 10

So, required numbers should be between √25 and √100

And so, they are √38 , √44

3 0

3 years ago

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Find the minimum y-value on the graph of y=f(x) F(x) = 7x^2 + 7 - 6

Kisachek [45]

Answer:

The minimum y-value is

$y=-\frac{31}{4}$ or $y=-7.75$

Step-by-step explanation:

we have

$f(x)=7x^{2}+7x-6$

This is the equation of a vertical parabola open up

The vertex is the minimum y-value on the graph

Convert the equation into vertex form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$f(x)+6=7x^{2}+7x$

Factor the leading coefficient

$f(x)+6=7(x^{2}+x)$

Complete the square. Remember to balance the equation by adding the same constants to each side

$f(x)+6+1.75=7(x^{2}+x+0.25)$

$f(x)+7.75=7(x^{2}+x+0.25)$

Rewrite as perfect squares

$f(x)+7.75=7(x+0.5)^{2}$

$f(x)=7(x+0.5)^{2}-7.75$ ------> equation in vertex form

The vertex is the point (-0.5,-7.75)

therefore

The minimum is the point (-0.5,-7.75)

The minimum y-value is $y=-7.75=-7\frac{3}{4}=-\frac{31}{4}$

see the attached figure to better understand the problem

6 0

3 years ago

Y = 6x + 11 2х - Зу = 7

irakobra [83]

9514 1404 393

Answer:

(x, y) = (-2.5, -4)

Step-by-step explanation:

Since you are given an expression for y, it is convenient to substitute that into the second equation.

2x -3(6x +11) = 7

2x -18x -33 = 7

-16x = 40 . . . . . . add 33

x = -40/16 = -2.5

Using the equation for y, we find ...

y = 6(-2.5) +11 = -15 +11 = -4

The solution is (x, y) = (-2.5, -4).

8 0

3 years ago