Mathematics High School

What is this equation called and how do I do it?

Answers

Answer 1

Answer:

DE ≈ 40

Step-by-step explanation:

Using the Sine rule in Δ DEF

∠ D = 180° - (58 + 87)° ← sum of angles in a triangle

∠ D = 180° - 145° = 35° , then

[tex]\frac{DE}{sin87}[/tex] = [tex]\frac{EF}{sin35}[/tex] = [tex]\frac{23}{sin35}[/tex] ( cross- multiply )

DE × sin35° = 23 × sin87° ( divide both sides by sin35° )

DE = [tex]\frac{23sin87}{sin35}[/tex] ≈ 40 units ( to the nearest whole number )

Related Questions

can someone please help me with this question?

Answers

They’re congruent through the AAS (Angle-Angle-Side) Theorem

Answer:

I believe that the answer would be B, the AAS theorem

Step-by-step explanation:

If I remember correctly, the angles and sides are listed in the order they occur. This would make the correct theorem AAS (Angle-Angle-Side)

Write the equation as a sine function.

Answers

This sin graph doesn't have a phase shift and its vertical displacement (d) is zero, so you don't need to include it in the equation of y = asin[b(x-c)]+d.

Can someone pleaseeee help if you’re correct I’ll give u brainlist

Answers

Answer:

180 - 48 = 132

132 ÷ 2= 66

p = 66°

Answer:

Step-by-step explanation:

The person above me is right thank you person above me

Determine the largest integer value of xx in the solution of the following inequality.
2x−8≤-19

Answers

Answer:

x≤-11/2

Step-by-step explanation:

Hope this helps!

Brain-List?

A player can move from point to point only in a direction that includes a downward motion (slanted or not). In how many distinct ways can a player move from the top to bottom?

Answers

Answer: 11

The answer is 11 because I counted the ways very carefully and even highlighted each path I took

Answer:

Step-by-step explanation:

Brooke has set up 70 chairs in equal rows for the class talent show. But,there is not room for more than 20 rows. What are the possible number of rooms that Brooke could set up?

Mathematics

Answers

Answer: If the rows must be even, she can set

14 rows of 5 chairs

10 rows of 7 chairs

7 rows of 10 chairs or

5 rows of 14 chairs

Step-by-step explanation:

Take the prime factors of 70: 2, 5 and 7 Multiply them in different ways to get the combinations where no product is greater than 20. (7 ×5 is the one combination of factors that won't work)

Solve this question. 70 pts

Answers

Answer:

Step-by-step explanation:

Because you add them and you get what will equal 54.

Answer: 100 cm^2

Step-by-step explanation:

the sqaure at the bottom left is 4x4=16

the rectangle next to it is 6x10=60

the triangle is .5(6x8)=24

16+60+24=100

Bars of soap come in packages of 6 and packages of 20. The 6-bar pack costs $7.86, and the 20-bar pack costs $25.00. Which is the better deal? What is the price per bar of the better deal?

Answers

Answer:

mayn im just gettin points

Step-by-step explanation:

sorry other people :) :(

pleasee help me ASAP ITS DUE SOON

I just need to know

1. slope
2. y-intercept
3. slope intercept form

Answers

(-5, 2) ⇒ x₁ = -5, y₁ = 2

(7, -1) ⇒ x₂ = 7, y₂ = -1

Slope:

[tex]\bold{m=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{-1-2}{7+5}=\dfrac{-3}{12}=-\dfrac14}[/tex]

Slope intercept form:

y = mx + b

Plug m and (7, -1) :

-1 = -¹/₄(7) + b

-1 + ⁷/₄ = b

b = ³/₄ ← y-intercept

Therefore slope intercept form of h(x):

h(x) = -¹/₄x + ³/₄

What is the solution to the following equation? x2 + 3x + 4 = 0

Answers

Answer:

[tex]x=\dfrac{-3\pm \sqrt7i}{2}[/tex]

Step-by-step explanation:

The given equation is [tex]x^{2}+3x+4=0[/tex].

We need to find the solution of the above equation.

The solution of an equation [tex]ax^2+bx+c=0[/tex] is :

[tex]x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}[/tex]

We have, a = 1, b = 3 and c = 4

[tex]x=\dfrac{-3+ \sqrt{(3)^2-4(1)(4)} }{2}, \dfrac{-3- \sqrt{(3)^2-4(1)(4)} }{2}\\\\=\dfrac{-3+\sqrt{9-16}}{2}, \dfrac{-3-\sqrt{9-16}}{2}\\\\=\dfrac{-3\pm \sqrt7i}{2}[/tex]

So, the solution of the given equation is [tex]\dfrac{-3\pm \sqrt7i}{2}[/tex].

Tammy figured her math exam would be difficult unless she put in at
least 15 hours of study time to prepare. She studied 2½ hours on
Monday, 3 hours on Tuesday, 4¾ hours on Wednesday, and 4 ½
hours on Thursday. Did she study for at least 15 hours? Explain.

Answers

Answer: No, she did not study for at least 15 hours.

=======================================================

Explanation:

Fractions are often a pain, so I find it easier to convert to decimal form whenever possible.

1/2 = 0.5

3/4 = 0.75

which lead to,

2 & 1/2 = 2 + 1/2 = 2 + 0.5 = 2.5

4 & 3/4 = 4 + 3/4 = 4 + 0.75 = 4.75

4 & 1/2 = 4 + 1/2 = 4 + 0.5 = 4.5

-----------------------------

We can then rephrase the problem like so:

"She studied 2.5 hours on Monday, 3 hours on Tuesday, 4.75 hours on Wednesday, and 4.5 hours on Thursday"

Add up those decimal values to get:

2.5 + 3 + 4.75 + 4.5 = 14.75

In total, Tammy studied for 14.75 hours, which is equivalent to 14 & 3/4 hours.

This result is smaller than 15, so she did not study for at least 15 hours.

Note: "at least 15" is the same as saying "15 or more".

am i correct ?? just wanted to make sure i think not oop

Answers

Answer:

I do not believe you are !

Step-by-step explanation:

Francesca bought a rectangular piece of fabric that is 2/3 yard long and 3/4 yard wide. What is the area, in square yards, of the piece of fabric?

Answers

Answer:

[tex]area \: = length \times width \\ = \frac{2}{3} \times \frac{3}{4} \\ = \frac{(2 \times 3)}{(3 \times 4)} \\ = \frac{6}{12} \\ area = \frac{1}{2} square \: yards[/tex]

Sasha can mow 3/8 of an acre of grass in 45 minutes. How many acres of grass does Sasha mow per hour.

Answers

Answer:

1/2 an acre of grass per hour. (4/8 works too)

Step-by-step explanation:

We can divide 45 by 3 to get the time it takes to do one acre, we get 15 for this. Then we multiply 15 by 4.

answer plz..... ill mark brainleist

Answers

Answer:

ok this is a lot easy

Step-by-step explanation:

D mabye

WHAT ARE THE COORDINATES OF POINT Q? (-4,2 1/2)

Answers

Answer:

you wrote the answer

Step-by-step explanation:

Answer:

(-4,2 1/2)

Step-by-step explanation:

Answer:

(-4,2 1/2)