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
sergij07 [2.7K]
3 years ago
5

I need to know the answer for my math class

Mathematics
1 answer:
KatRina [158]3 years ago
3 0
Subtract 18 from each side of the equation. Then you'll see b=0 . Zero is the only thing you can add to 18 and still have 18.
You might be interested in
-1/6 + 2/3 (9 - 3/4) - 1/2<br><br> I’m confused if someone can help
emmainna [20.7K]

Answer:

4.83333333333

Step-by-step explanation:

I'm sorry if that is wrong but I believe it is right

7 0
3 years ago
5. and 6. Show work for full credit please.
Delvig [45]

Answer:

2. YWX

Step-by-step explanation:

<T and <Y are congruent

<W and <W are congruent

<Z and <X are congruent

8 0
2 years ago
78% of students in the 7th grade
irina1246 [14]

Answer:

77

Step-by-step explanation:

percentage         Students

78%--------------     -273

100%--------------      ---X

(100x273)/78 = 350 students in class so

how many did  not pass?​

350-273 = 77 students not pass

6 0
3 years ago
Read 2 more answers
The ratio of girls to students at a middle school is 10 to 18. If there are 270 students at the school, how many are girls?
Stells [14]
A good way of doing this problem would be to use cross multiplication of ratios
<u />\frac{10 girls}{18 students} = \frac{X girls}{270 students}

Then cross multiply

(10 girls)(270 students)=(X girls)(18 students)

2700=18x
150=x
4 0
3 years ago
Read 2 more answers
The tallest tree in the world is reputed to be a giant redwood named Hyperion located in Redwood National Park in California, US
dlinn [17]

Answer:

114.02 meters

Step-by-step explanation:

The information you're given about the tree will form a triangle, with the three corners being the top of the tree, the point where the tree meets the ground, and the specified point 41.5 meters from the tree. The angle of elevation (70°) is the angle made where the line representing the ground and the line connecting the top of the tree to the ground at the specified point connect.

The angle where the tree meets the ground is 90°, so the triangle a right triangle.

So this all means you know one angle of a right triangle (70°) and the side adjacent to this angle (41.5 meters). You're solving for the height of the tree, which is the side opposite of the angle you know. You can solve using either <em>Sine, Cosine, </em>or <em>Tangent.</em>

Use the acronym SOHCAHTOA to figure out which of those three functions to use. Feel free to look this up for more information if you haven't heard of it before. In this case, we're using Tangent (TOA = Tangent, Opposite side, Adjacent side)

To solve using any of those three functions, you'll need a scientific calculator. On your calculator, you'll see the buttons <em>SIN, COS, </em>and<em>TAN.</em> For this problem, press <em>TAN</em> and you'll see something appear that says <em>tan (___)</em>. You'll need to input a number to get your answer, and here's how to find that number:

Again referencing SOHCAHTOA, the "TOA" part lists Opposite first and then Adjacent. This is because you're going to write a fraction with those two numbers, and since Opposite is first, it's the numerator. That means that Adjacent is the denominator. We don't know the value of the opposite side, so it'll be represented by <em>x</em>, and we do know the value of the adjacent side, 41.5. This means the fraction is \frac{x}{41.5} .

This isn't the number to input into the calculator -- you need to isolate the variable:

The original equation is:

tan 70 = x/41.5

Multiply both sides by 41.5 (To cancel out the denominator and isolate <em>x</em>)

tan 70 (41.5) = x

Now you've got the equation for <em>x, </em>you're ready to put this in your calculator.

What appeared on your calculator was:

tan(__)

Input like follows:

(tan(70))41.5

The brackets are needed like that so the calculator knows to multiply the entire thing by 41.5. You might get a wrong answer otherwise.

Hit enter, and you'l get the height of the tree:

114.02 meters

5 0
3 years ago
Other questions:
  • What is the constant of proportionality for the relationship between the length of the arc intercepted by a 80 degree angle and
    7·1 answer
  • Mr. Martin drove 290 miles last week This week he drove 125 miles more than last week. How many miles did Mr. Martin drive this
    15·1 answer
  • Use the given information to find the minimum sample size required to estimate an unknown population mean.
    14·2 answers
  • HELP PLS SIMPLE SIMPLESIMPLE
    7·2 answers
  • Select the correct answer
    9·2 answers
  • Plezz help me I will mark you brainlyest!!!!!!!!!!!!!!!!!!!! ФФ
    9·2 answers
  • Help its ugent ill mark brainleyest
    8·1 answer
  • Basketball has a radius of 3.4in, how much air can it hold?
    11·1 answer
  • A candy maker has 12 feet of taffy. How many 4/10 inch pieces can he make
    13·1 answer
  • What product is greater than 3/5
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!