1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elanso [62]
3 years ago
15

WILL GIVE BRAINLIST PLS HELP Find z. Just write the number. Answer should be a whole number.

Mathematics
2 answers:
kakasveta [241]3 years ago
8 0

Answer:

8

Step by Step Explanation

scZoUnD [109]3 years ago
3 0

Answer and Step-by-step explanation:

To find Z, we have to use the trigonometric function of Sine.

The Sine trig function looks like this:

sin(Angle) = = \frac{opposite.side}{hypotenuse}

Plug in the values and solve for z.

sin(30) = \frac{4}{z} \\\\\\\\\\z = \frac{4}{sin(30)}

Plug into a calculator and solve.

<u>We get z to be 8.</u>

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

You might be interested in
Brainliest!!!!!marking&lt;—
Pavel [41]

Answer:

I believe it would be (c)

3 0
3 years ago
Read 2 more answers
Two walls of a canyon form the walls of a steady flowing river. From a point on the shorter wall, the angle of elevation to the
Sunny_sXe [5.5K]

Answer:

x is approximately 226.3 feet

y is approximately 308.6 feet

z is approximately 226.3 feet

Step-by-step explanation:

The given parameters of the walls are;

The angle of elevation from the top of the shorter wall to the top of the opposing wall, θ₁ = 20°

From the diagram, the angle of depression from the top of the shorter wall to the bottom of the opposing wall, θ₂ = 45°

The distance from the bottom of the shorter wall to the base of the opposing wall, l = 320 feet

x = The height of the shorter wall = l × sin(θ₂)

∴ x = 320 feet × sin(45°) = 320 feet × (√2)/2 = 160·√2 feet ≈ 226.3 feet

∴ x ≈ 226.3 feet

By observation, we have;

y = x + z × tan(θ₁)

Where;

z = l × cos(θ₂)

∴ y = 160·√2 + 320 × cos(45°) × tan(20°) ≈ 308.6

y ≈ 308.6 feet

z =  l × cos(θ₂)

∴  z = 320 × cos(45°) = 160·√2 ≈ 226.3

z ≈ 226.3 feet.

6 0
3 years ago
Use differentials to estimate the amount of paint needed to apply a coat of paint 0.07 cm thick to a hemispherical dome with dia
Mademuasel [1]

An hemispherical dome is half a sphere. If the diameter is 60 m, then the radius is 30 m.

We can use differentials to solve this problem because we are adding a thin layer to the original dome, so the volume of the dome in increased by a differential of itself.

This differential volume that the dome is increased is equal to the volume of the coat of paint.

The volume of the dome can be written as:

\begin{gathered} V=\frac{4\pi}{3}r^3 \\ \frac{dV}{dr}=\frac{4\pi}{3}\cdot3r^2\Rightarrow dV=\frac{4\pi}{3}\cdot3r^2\cdot dr=4\pi r^2\cdot dr \end{gathered}

Now, we can calculate dV as:

\begin{gathered} dV=4\pi r^2\cdot dr \\ dV\approx4\cdot3.14\cdot(30m)^2\cdot0.07\operatorname{cm}\cdot\frac{1m}{100\operatorname{cm}} \\ dV\approx12.57\cdot900m^2\cdot0.0007m \\ dV\approx7.92m^3 \end{gathered}

Answer: the paint needed for this coat is approximately 7.92 m^3

5 0
1 year ago
I need help agen plz my teachers are still asking me to stay
luda_lava [24]

Answer:

y = 7x^2  + 42x + 64

Step-by-step explanation:

... i know standard form, you just distribute the exponent to the parenthesis amounts and put it in order, hope it helps

5 0
3 years ago
Read 2 more answers
Please factorise the equations in the doc bellow ASAP. please show full working
ad-work [718]

Answer:

b. x² + 8x + 12 =

1. use the factoring X (see attachment)

2. 6 x 2 = 12; 6 + 2 = 12

3. (x + 6)(x + 2) = 0

4. x = -6, -2

c. x² + 13x + 12 =

1. 12 x 1 = 12; 12 + 1 = 13

2. (x + 12)(x + 1) = 0

3. x = -12, -1

c. x² + x - 12 =

1. 4 · (-3) = -12; 4 - 3 = 1

2. (x +4)(x - 3) = 0

3. x = -4, 3

f. x² + 15x + 36 =

1. 12 x 3 = 36; 12 + 3 = 15

2. (x + 12)(x + 3) = 0

3. x = -12, -3

hope this helps :)

8 0
2 years ago
Read 2 more answers
Other questions:
  • Determine the growth factor corresponding to 25% increase.
    9·2 answers
  • Approximate the square root to the nearest integer (-√29)
    9·1 answer
  • PLEASE HELP What is the range of this function? -1, -4, 4, 1, 8, 7, 18, 15
    5·2 answers
  • The difference of two numbers is 5. Their sum is 21. What are the numbers?
    10·1 answer
  • Information is given about a polynomial f left parenthesis x right parenthesisf(x) whose coefficients are real numbers. find the
    10·1 answer
  • Simplify the function f(x) = 7(). Then answer the questions below. The initial value for the function is . The simplified base f
    7·2 answers
  • What is the answer for this question
    7·1 answer
  • Please help me solved this since this is a test
    6·1 answer
  • 2x² – xy - 15y2<br> How to factor by grouping
    11·1 answer
  • What is the length of side YZ to the nearest tenth please show your work!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!