b) Use the graphs to solve the
simultaneous equations
y = 5 - x and
y = x + 1
X =
y =

Answer:        

Correct Answer D.

a × c = 11, b = 10

10 × 1 = 10

10 + 1 = 11

Divide the ten and 1 by 2

(x = 2) (2x+1)

Step-by-step explanation:

Because sine and cosine are complements, we will have that:

cos(60°) = 1/2.

First, because cosine and sine are complements, we know that:

cos(x) = sin(x + 90°).

cos(90° - x) = sin(x).

We will use the second relation, with x = 30° we can write:

cos(90° - 30°) = sin(30°)

cos(60°) = sin(30°)

And we know that sin(30°) = 1/2

Then we also have cos(60°) = 1/2.

So the correct option is d.

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Answer:

D-  cos 60° = 1/2, because the cosine and sine are complements

Step-by-step explanation:

Got it right on test:)

Answer:

Step-by-step explanation:

tanθ = 4/9

θ = arctan(4/9) ≈ 23.96°

The measure of the angle the ramp forms with the ground is :

-Angle is 23.96 degrees.

Let the angle is = x

We know that tan(x) is the slope.

tan(x)=\frac{4}{9}

tanθ = 4/9θ

tanθ = arctan(4/9)

tanθ≈ 23.96°

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Answer:

x=15

Step-by-step explanation:

side PQ =side QR

8x-27=4x+33

8x-4x=33+27

4x=60

x=60/4

x=15

Answer:

y = 4x - 3

Step-by-step explanation:

The equation for a line is y = mx +c

We need to find m which is the gradient:

To do this pick any two coordinates on the line:

(1, 1) and (2, 5)

Next divide the difference of the y coordinates by the difference of the x coordinates:

5 - 1 / 2 - 1

= 4/1 = 4

so our gradient is 4

We'd write that as y = 4x + c

Next we need to find c which is the y-intercept

To do this just simply look for where the line crosses the y-axis

This is -3

So we'd write that as y = 4x - 3

Hope this helps :)

Answer:

y=4x-3

Step-by-step explanation:

it wewnt up 4

the baby value/y interseption was -3

Step-by-step explanation:

(5x + 1 ) + 14x + (4x + 5)= 180 [ sum of all angles of a triangle is 180]

Answer:

positive

Step-by-step explanation:

Answer:

By an online search, I've found that the dimensions of the eraser are:

4cm by 2cm by 0.5cm

First, we need to remember that for a rectangular prism of length L, width W, and height H, the volume is:

V = L*W*H

We know that the measures of the box are:

12cm by 20cm by 5cm

Then we can define:

L = 12cm

W = 20cm

H = 5cm

Then the total volume of the box is:

V = 12cm*20cm*5cm = 1200 cm^3

For the eraser, we will have:

L = 4cm

W = 2cm

H = 0.5cm

Then the volume of the eraser is:

v = 4cm*2cm*0.5cm = 4 cm^3

The volume of the box that is not taken up by the eraser is equal to the difference between the volume of the box and the volume of the eraser.

Then:

Volume not taken by the eraser = V - v = 1200cm^3 - 4cm^3 = 1196cm^3

Answer:

[tex]21.0 { { {1221220 = 223jn}^{n \: \: \: \: \: \: \: \: \: \: \: \: \tan( \beta \beta \beta \beta \beta \beta \pi\pi) } }^{2} }^{2} \times \frac{?}{?} [/tex]

Answer:

31° F and 67° F

Step-by-step explanation:

(a)

When t = 0 then

f(0) = 31 + [tex]\frac{0}{100}[/tex] = 31 + 0 = 31° F

(b)

When t = 10 , then

f(10) = 31 + [tex]\frac{40(10^3)}{10^3+100}[/tex] = 31 + [tex]\frac{40000}{1100}[/tex] = 31 + 36.36... ≈ 67° F

Answer:

x=10

y=11.66

Step-by-step explanation:

8^2+6^2=x^2 and then you take the root

Same goes for the second question

a^2+b^2=c^2

Answer:

a) 2 + 1 = 3

   4 + 2 = 6

   6 + 3 = 9

b) Yes

c) Yes, since you are adding b to two b, which results in 3b

Step-by-step explanation:

Hope that helps!

Answer: 2/7,  2 : 5,  2 to 5

Step-by-step explanation:

7 is the total

5 is white

2 is grey

2/7 is 2 out of 7 since 2 is grey

2 : 5 is 2 grey for 5 white

2 to 5 is the same thing as 2 : 5

Answer:

ANGLE BAC= 80°, hope it helps you thanks.

Answer:

x^2y^4

Step-by-step explanation:

8 divided by 8 = 1

x divided by x^2 = x

y^3 divided by y = y^2

(xy^2)^2 = x^2y^4

Answer:

A, C, D I think

Step-by-step explanation:

Hope this helps and feel free to answer my recent question ! :)

Answer:

a c and d

Step-by-step explanation:

Answer:

Step-by-step explanation:

Slope = (-1-(-3))/(1-0) = 2

y = 2(x+3) = 2x+6

Answer:

Step-by-step explanation:why is the trapezoid separated into a triangle and a rectangle

Answer:

$44.80

Step-by-step explanation:

Answer:

c is the answer ....

mark me brainliest

Answer:

69

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

plug 32 in for m and solve

Answer:

c

Step-by-step explanation:

Im on that to, maybe i can help you !! :)

Answer:

(-3, 2)

x=-3, y=2

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation. and thats how you get your answer :)

The value of x is -3 and value of y is 2.

The given equations are:

6x + 6y=-6 ..(1)

5x + y=-13...(2)

From equation (2)

y=-13+5x..(3)

Plug in equation in equation (1):

6x + 6(-13+5x)=-6

6x-78+30x=-6

24x=-72

Divide both sides by 24:

x=-72/24

x=-3

Now put x=-3 in equation (2):

5(-3) + y = -13

-15 + y = -13

y = -13 + 15

y = 2

Hence, the value of x is -3 and value of y is 2.

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Answer:

Step-by-step explanation:

answer=

5x+1=6

5x=6-1

5x=5

x=1

Square root of 1 is 1

Answer:

√5x+1 = 6

(√5x+1)2 = (6)2

5x+1 = 36

5x  -35 = 0

 Add  35  to both sides

     5x  = 35

Divide both sides by 5

     solution is :

    x = 7

Step-by-step explanation:

The answer you are looking for is 15/32.

To find this answer, you must first find the Least Common Denominator. The least common denominator of these 2 fractions can be found by simply multiplying the 2 given denominators together. 5 * 8 = 40.

Now that you found the LCD, you can start to solve the equation. To get 40 as the denominator for 3/8, you multiply the fraction by 5/5.

3/8 * 5/5 = 15/40.

To get 40 as the denominator for 4/5, you multiply it by 8/8. 4/5 * 8/8 = 32/40.

Finally, you divide 15/40 by 32/40. The denominators cancel out, so the numerator becomes 15 and the denominator now becomes 32.

So your answer is 15/32 (which cannotbe simplified)

I hope this helps!!

Answer:

C. {(0, −1), (2, 2), (1, −2), (3, 0), (1, 1)}

hope it helps you