Maths help 15 points for correct answer

Answer:

5

Step-by-step explanation:

Answer:

f(-5)=-9

Step-by-step explanation:

f(x)=y

So knowing that -5 is equal to x plug it in

y=(2)(−5)+1

y=−9

If you have more questions just ask.

Answer:

27 cm²

Step-by-step explanation:

its in the picture idk how to explain

Answer:

Step-by-step explanation:

use the area of trapezoid:

A = h/2 (b₁ + b₂)

where h = 3 cm

         b₁ = 6 cm

         b2 = 3 cm

plugin values into the formula:

A = 3/2 (6 + 3)

A = 13.5 cm²

Answer:

HIG and EFD

Step-by-step explanation:

simmlar tryangles

Answer:

1/4 cups

Step-by-step explanation:

Answer: 0.25

Step-by-step explanation:

Answer:

5/4?

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Hopefully this helps

Answer:

y = 33.75 m/s.

Step-by-step explanation:

The graph of the rocket's velocity with respect to  time looks as follows :

[tex]y=0.15x^2[/tex] ...(1)

Where x is time in seconds

We need to find the velocity of rocket after 15 seconds. Put x = 15 in equation (1).

[tex]y=0.15\times (15)^2\\\\=33.75\ m/s[/tex]

Hence, the speed of the rocket after 15 seconds is 33.75 m/s.

Answer:

D) 41.81 degrees

Step-by-step explanation:

In this problem, we are given a leg length (a=12) and the hypotenuse (c=18).

We need to select which trigonometric identity to use with the acronym SOHCAHTOA:

SOH -> sine=opposite/hypotenuse

CAH -> cosine=adjacent/hypotenuse

TOA -> tangent=opposite/adjacent

Given side a is opposite of angle A and side c is the hypotenuse, we clearly need to use the sine function.

Set up an equation based on the information you have:

sin(A)=12/18

Now take the inverse:

sin^-1(sin(A))=sin^-1(12/18)

A=41.8103149

So the best option is answer D) 41.81 degrees

Answer:

4+2/3-1 = 3

Step-by-step explanation:

hopefully it helped

The compound inequality to describe the elevation of Ted's house is 135 > x > 128.

Ted lives between 128m and 135m above sea level.​

Now it is given that,

Sakura's house is at an elevation between 113 m and 120 m above sea level.

Let x be the elevation of Sakura's house.

So, 120 > x > 113

Now Ted lives about 15 m below her

Ted's  house elevation = x - 15

So, the compound inequality to describe the elevation of Ted's house,

120 > x - 15 > 113

Adding 15 to the inequality we get,

120 + 15 > x - 15 + 15 > 113 + 15

Solving we get,

135 > x > 128

This is the required compound inequality.

Thus, the compound inequality to describe the elevation of Ted's house is 135 > x > 128.

Learn more about inequality here:

https://brainly.com/question/11613554

#SPJ1

Answer:

127

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Answer:

y = 2

Step-by-step explanation:

Let's first write the equation of y = 12 in slope-intercept form. Slope-intercept form is represented as:

y = mx + b

Where...

m: slope

b: y-intercept (the y-value at where the line intercepts the y-axis)

(x, y): any coordinate on the line

This line has a slope of 0 and a y-intercept of 12, therefore its equation is:

y = 0x + 12.

Parallel lines have the same slope. Therefore the equation of the parallel line can be represented as:

y = 0x + b

We need to find b, or the y-intercept.

Let's substitute the point given to us into the equation.

y = 0x + b

2 = 0(3) + b

2 = 0 + b

b = 2

Therefore the equation of a line parallel to y = 12 that contains the point (3, 2) is y = 2.

Answer:

D

Step-by-step explanation:

Answer:

To be honest it has to be d

Step-by-step explanation:

Answer:

x² + 8x + 15

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

Step 1: Define

x = -5, -3

Step 2: Write equation

Answer:

Claim: Basically Carlos is saying that every number and its opposite are on the positive and negative side of the number.

Which number supports tht claim and which number refutes(disagree) with that claim?

Step-by-step explanation:

The opposite of -24 is 24, located on the positive side of the number line

The opposite of 605 is -605, located on the nagative side of the number line.

The opposite of 0 is 0.

Answer:

Step-by-step explanation:

2(4+7a^2)

=8+14a^2

=7a^2+4

OR if that 2 is an exponent

(4+7a^2)^2

=(4+7a^2)(4+7a^2)

=16+49a^4+28a^2+28a^2

=49a^4+56a^2+16

Answer:

x=0.61933

Step-by-step explanation:

Let’s solve your equation step by step.

Step 1: Multiply both sides by x.

x

2

=

−

8

x

3

−

6

x

+

6

x

2

−

(

−

8

x

3

−

6

x

+

6

)

=

−

8

x

3

−

6

x

+

6

−

(

−

8

x

3

−

6

x

+

6

)

(Subtract -8x^3-6x+6 from both sides)

8

x

3

+

x

2

+

6

x

−

6

=

0

(Use cubic formula)

x

=

0.61933

Check answers. (Plug them in to make sure they work.)

Answer: 239.45

Your welcome if this was for an assignment.

Answer:

6 foot

Step-by-step explanation:

Since the board is 12foot and the angle makes 60 degrees to the wall, we can assume that it is the 30,60,90 degreees. 30,60,90 degrees triangle makes the side of x, 2x ,and xroot3.

Hence, the board(12foot) is equal to 2x.

x=6

Answer:

The answer is M = (C-5)/4

Answer:

[tex]2ab^2-\frac{a^2b^2}{5}=\frac{10ab^2-a^2b^2}{5}[/tex]

Step-by-step explanation:

Given the expression

[tex]2ab^2-\frac{a^2b^2}{5}[/tex]

[tex]\mathrm{Convert\:element\:to\:fraction}:\quad \:2ab^2=\frac{2ab^25}{5}[/tex]

[tex]2ab^2-\frac{a^2b^2}{5}=\frac{2ab^2\cdot \:5}{5}-\frac{a^2b^2}{5}[/tex]

[tex]\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}[/tex]

                 [tex]=\frac{2ab^2\cdot \:5-a^2b^2}{5}[/tex]

                 [tex]=\frac{10ab^2-a^2b^2}{5}[/tex]

Thus,

[tex]2ab^2-\frac{a^2b^2}{5}=\frac{10ab^2-a^2b^2}{5}[/tex]

Answer:

$940

Step-by-step explanation:

4700/0.2 = 940

Answer:

judy had the better buy

Step-by-step explanation:

Answer:

I would buy the ones Judy has

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

   1/2x4=2

Answer:-4 + -6 = -10

Step-by-step explanation:

Answer:

19360 yards

Step-by-step explanation:

11 times 1760 = 19360