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
matrenka [14]
3 years ago
9

PLEASE HELP ME FRIENDS ​

Mathematics
2 answers:
telo118 [61]3 years ago
7 0

Answer:

10=x

40 degrees for both

Step-by-step explanation:

3x+10=5x-10

3x+20=5x

20=2x

10=x

3(10)+10=40

5(10)-10=40

olya-2409 [2.1K]3 years ago
3 0

Answer:

x=10

Step-by-step explanation:

Since the two given expressions are alternate interior angles ( as a result of the parallel line, which are indicated by the arrows on the two lines going through the middle line, the transversal) you can set them equal to each other.

5x-10 = 3x+10

add 10 on both sides

5x = 3x + 20

subtract 3x on both sides

2x=20

divide by 2 on both sides

x=10

You might be interested in
Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing inference for
e-lub [12.9K]

Answer:

a) Hence the endpoints of a t-distribution with 5% beyond them in each tail if the sample has size n=12 is ± 1.796.

b) Hence the endpoints of a t-distribution with 1% beyond them in each tail if the sample has size n=20 is ± 2.539.

Step-by-step explanation:

Here the answer is given as follows,

5 0
2 years ago
A ladder is leaning against a tall wall with the foot of the ladder placed at 7 feet from the base of the wall and the angle of
djverab [1.8K]

Complete question is;

A 21 ft ladder is leaning against a tall wall with the foot of the ladder placed at 7 feet from the base of the wall and the angle of elevation is?

Answer:

θ = 70.5°

Step-by-step explanation:

The angle of elevation simply means the angle that the ladder makes with the ground. Let's call this angle θ.

I've attached a diagram showing the triangle made by this ladder and the wall.

From the attached diagram, we can see the triangle formed by the ladder and the wall.

We can find the angle of elevation θ from trigonometric ratios.

Thus;

7/21 = cos θ

cos θ = 0.3333

θ = cos^(-1) 0.3333

θ = 70.5°

7 0
3 years ago
Half of a sphere is stacked on top of a cone. They both share a circular base. The radius of the circle is 6 millimeters. The he
kherson [118]

Answer:

312π mm3

Step-by-step explanation: yes

5 0
3 years ago
Read 2 more answers
An alloy consists of nickel, zinc, and copper in the ratio 2:7:9. How many pounds of nickel have to be used to create alloy that
Hunter-Best [27]

We are given ratio nickel to zinc to copper = 2:7:9.

From this ratio we can see that <em>ratio of nickel to zinc is 2:7</em>.

Let us assume number of pounds of nickel have to be used to create alloy that contains 4.9 lb of zinc is x pounds.

So, we can setup a proportion as :

x : 4.9 =  2:7

Or

\frac{x}{4.9}=\frac{2}{7}

On cross multiplication, we get

7x= 4.9× 2

7x = 9.8

Dividing both sides by 7, we get

x = 1.4.

<h3>Therefore, 1.4 pounds of nickel have to be used to create alloy that contains 4.9 lb of zinc.</h3><h3 />
6 0
3 years ago
15 cm<br> 4 cm<br> cm<br> V=____cm3
bonufazy [111]

Answer:

V=(πr^2 x h)/3

lets use π as 3.14 cause I dont know what pi u using

3.14 x 4^2 x 15 = 753.6/3 = 251.2

If you're using π as your pi, than just replace 3.14 by π on calculator

Hope that answers your question

8 0
3 years ago
Other questions:
  • Hi . I need help with this question. Please show workings.​
    12·2 answers
  • ∆ABC is plotted on a coordinate plane. If ∆ABC rotates 90° clockwise around point C, what are the coordinates of A'?
    7·1 answer
  • Please answer my question <br> I WILL MARK BRANLIEST, AND ANSWER ONE OF YOUR QUESTIONS!!!!
    15·2 answers
  • 4{x + 8} +6 = 38 what is the value of x
    5·2 answers
  • -8 - 10 x (-1) + 7 x (-1)
    14·2 answers
  • im tired of ppl giving me wrong answers. Please will somebody help! ill give brailiest as long as i get full answers and explana
    14·2 answers
  • PLEASE HELP ME I NEED THE ANSWER
    11·1 answer
  • 2. Mang Danny bought a cellphone worth Php 7500 and he's selling it for Php 9000. How much is the markup?
    10·1 answer
  • Which graph has a point Q at 3,6​
    5·1 answer
  • COFFEE SHOP Chenoa wants to stop for coffee on her way to school. The distance from Chenoa’s house to the coffee shop is 3 miles
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!