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artcher [175]
3 years ago
7

I need help solving this problem.

Mathematics
1 answer:
IgorC [24]3 years ago
3 0
A four cornered figure shape (lol) the angles of it equal 360 total
you have three angles given
we can make an equation to solve for x
so
90 + 90+ 128 + x = 360
combine like terms 
308 + x = 360 
subtract 308 from both sides 
x = 52 

Hope this helps :)
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Twenty more than a number is eighteen in an equation
postnew [5]
"more" refers to addition
"a number" refers to a variable (x)

x + 20 = 18

x = -2
7 0
4 years ago
Roman has 2 red pencils in his backpack. If this is 25% of the total number of pencils, how many pencils are in his backpack?
MrRa [10]
2 = 25%. 25% also means 1/4. So, it is a quarter of something. So. So find 100%, you have to multiply 2 by 4. 2 * 4 = 8. Roman has 8 pencils in his backpack.
6 0
4 years ago
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What is two numbers whose difference is 25.6
Wewaii [24]
What is two numbers whose difference is 25.6 There are plenty of numbers and digits has a difference of 25.6. we shall illustrate these values using the following.
<span><span>1.       </span>50.0 – 24.4 = 25.6</span>
<span><span>2.       </span>100.1 – 74.5 = 25.6</span> <span><span>
3.       </span>150 – 124.4 = 25.6</span> <span><span>
4.       </span>78 – 52.4 = 25.6</span> <span><span>
5.       </span>90 – 64.4 = 25.6</span> <span><span>
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5 0
3 years ago
Trevor and $826 on account during 2.5% annual interest for seven years.
photoshop1234 [79]

Trevor invested $ 4720

<em><u>Solution:</u></em>

Given that, Trevor earned $ 826 on account during 2.5% annual interest for seven years

We can simple interest formula

<em><u>The formula for simple interest is given as:</u></em>

\text{ Simple Interest } = \frac{p \times n \times r}{100}

Where,

"p" is the principal

"n" is the number of years

"r" is the rate of interest

Here given that,

Principal = p = ?

rate of interest = r = 2.5 %

number of years = n = 7

Simple interest earned = 826

<em><u>Substituting the values in above formula,</u></em>

826 = \frac{p \times 7 \times 2.5}{100}\\\\82600 = p \times 7 \times 2.5\\\\82600 = 17.5p\\\\p = \frac{82600}{17.5}\\\\p = 4720

Thus he invested $ 4720

7 0
3 years ago
In a breakfast cereal, 40% of its weight is fruit.
Dmitry [639]
A 2/5 or 2:3
b 25% or 1/4
im 90% sure this is correct


4 0
4 years ago
Read 2 more answers
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