Đại số tuyến tính sinh viên

Answer:

125/2

Step-by-step explanation:

62 * 2 = 124

124 1/2 = 124 + 1 = 125/2

Answer:125/2

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

[tex]4x + 24 = 7x - 49 \\ then \: collect \: the \: same \: variable \\ 4x - 7x = - 49 - 24 \\ x = - 63 \div - 3 = 21[/tex]

Answer:

0t=8

Step-by-step explanation:

3t+4=12+3t

3t-3t=12-4

0t=8

Answer:11/3

Step-by-step explanation:

Answer: $133.20

Step-by-step explanation:

Answer:

13x

Step-by-step explanation:

(x)(4(2)+5)

x(8+5)

x(13)

13x . answer

Answer:

[tex]\huge\boxed{\sf f(4x + 5) = 16x\² + 40x + 25}[/tex]

Step-by-step explanation:

Given that:

f(x) = x²

Put x = 4x + 5

f(4x + 5) = (4x + 5)²

f(4x + 5) = (4x + 5)(4x + 5)

f(4x + 5) = 4x(4x + 5) + 5(4x + 5)

f(4x + 5) = 16x² + 20x + 20x + 25

f(4x + 5) = 16x² + 40x + 25

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

Step-by-step explanation:

The answer is actually

Let:

S=1+2+3+4+5+6+7+8+9+n

We know the answer to the following infinite sum:

S2=1-1+1-1+1-1+1-1+1-1+1-1+1-....= - 1/2

We can therefore solve for this sum:

S3=1-2+3-4+5-6+7-8+9-....

We add them:

S3=      1-2+3-4+5-6+7-8...

S3=       +1-2+3-4+5-6+7-8...

        ________________

2S3=    1-1+1-1+1-1+1-1+1-....

Therefore:

2S3=S2=

Okay this is the answer I hope this help

Answer:

profit is 45 dollars

Step-by-step explanation:

you add 7220+1235 to get 8455 and he sold it for 8500 so that's a 45$ profit

Answer:

When we talk about Intercept... We refer to the place where the line touches or Crosses a Mentioned axis.

In this question... We needed the y - Intercept

Know This: At the intercept of a mentioned axis...The other axis is zero at that point.

In other words... If we're asked for intercept at x-axis ... The y value at that point is zero and Vice Versa

So To find the y Intercept... the x value at this point is zero(0).

With this in Mind...

substitute x = 0 into the quadratic eqn

f(x) = 0² +8(0) - 13

f(x) = -13

This is Our Y Intercept .

To get the x intercept(if asked)

substitute y = 0 and solve

0 = x² + 8x - 13

This is a quadratic equation

Solving this would get you two value and those values would be your x intercept.

I hope it helps.

Have a great day.

Answer:

below

Step-by-step explanation:

When are adding a negative number, that means that you just subtracting a positive value.

-3 + (-5) -> -3 - 5

On a number line you would to put finger at the point -3 and move to the left 5 spaces since we are subtracting.

Best of Luck!

Spoon ;

[tex]5 \frac{3}{8} = \frac{43}{8} = 5.375[/tex]

Key ;

[tex]6 \frac{3}{4} = \frac{27}{4} = 6.75[/tex]

Cup ;

[tex]4 \frac{3}{12} = \frac{17}{4} = 4.25[/tex]

bowl;

[tex]5 \frac{5}{6} = \frac{35}{6} = 5.83[/tex]

[tex]key = 6 \frac{3}{4} = \frac{27}{4} = 6.75[/tex]

I hope I helped you^_^

Answer:

1/3

Step-by-step explanation:

To get the amount of paint,you will have to deduct the number of paint she used to start minus the amount of of gallon she finished with.

5/6-1/2

L.C.M

10-6/12

4/12

=1/3

Answer:

vertex = (- 3, 7 )

Step-by-step explanation:

The equation of a parabola in vertex form is

f(x) = a(x - h)² + k

where (h, k ) are the coordinates of the vertex and a is a multiplier

f(x) = (x - 3)² + 7 ← is in vertex form

with vertex = (3, 7 )

Answer:

-8

Step-by-step explanation:

(2)(-5) -(-3)

Multiply:

2 × -5 = -10

-10 -(-3)

-10 + 3

   -8

Hope this helped.

Answer:

(2) (-5)- (-3)

-10 - (-3)

-10 + 3

-7

therefore the final answer is ((( -7 )))

Step-by-step explanation:

hope this helps

Answer:

A triangular prism

Explanation:

The 2 triangles will be the 2 bases and the 3 rectangles will be the 3 sides.

9514 1404 393

Answer:

  1057 quarts

Step-by-step explanation:

"Kilo-" is an SI prefix meaning 1000. 1 kiloliter is 1000 liters, so will be ...

  1000 liters = 1000 × 1.057 quarts = 1057 quarts

9514 1404 393

Answer:

  1/125

Step-by-step explanation:

The map scale is usually shown as the ratio of the map distance to real-world distance. Here, that is ...

  16 cm : 20 m = 16 cm : 2000 cm = 16 : 2000 = 1 : 125

The map scale is 1/125.

Answer:

Answer is 9.

Step-by-step explanation:

a (5, 3),  b (5, -6)

[tex]\sqrt(x^2 - x^1) ^2+(y^2- y^1)^2\\\sqrt(5 - 5)^2 +(-6- 3)^2\\\\\sqrt(0)^2 +(-9)^2\\\\\sqrt(81)\\\\9[/tex]

Answer: 9

Step-by-step explanation:

Sqrt (5-5)^2+(-6-3)^2 =

Sqrt (0)+(-9)^2

Sqrt 81 = 9

Answer:

$1080

Step-by-step explanation:

s=30w+750

s=30(11)+750

s=330+750

s=1080

Answer:

refer to workings

Step-by-step explanation:

Perimeter=15+15+8+8=46cm

Area=15×8=120cm²

Answer:

2/1 would be the answer since you have a whole number

Answer:

2/1

Step-by-step explanation:

when expressing two as a fraction, you're only demonstrate that invisible denominator of 2, as it will get your back to 2 when you calculate it

Answer:

-8.75

Step-by-step explanation:

Rational: a number that can be expressed as an integer or the quotient of an integer divided by a nonzero integer.

A rational number is a number that can be expressed as a fraction with an integer numerator and a positive integer denominator. Two different fractions may correspond to the same rational number. 1/2 = 2/4. Every whole number is a rational number. These can be written as N/1 = N, so they are rational numbers.

Using formula:

[tex]\to \bold{rational\ value =\frac{a+b}{2}}[/tex]

Given:

a=-8

b=-9

Calculating the rational number:

[tex]\to \bold{rational\ number=\frac{-8+(-9)}{2}}[/tex]

                                   [tex]\bold{=\frac{-8-9}{2}}\\\\ \bold{=\frac{-17}{2}}\\\\ \bold{=- 8.5}\\\\[/tex]

Learn more:

brainly.com/question/24484724

Answer:

m = -3

Step-by-step explanation:

15 - (4m - 5) = 32            (Given)

15 - 4m + 5 = 32             (Distributed)

20 - 4m = 32                  (Added like terms)

20 - 4m - 20 = 32 - 20  (Subtract 20 on both sides)

-4m = 12                         (Simplify)

-4m/-4 = 12/-4                (Divide -4 on both sides)

m = -3                             (Simplify)

My answer is in the picture

Answer:

66.67

Step-by-step explanation:

20-12=8

8/12=0.6666667

0.6666667x100=66.67