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gtnhenbr [62]
3 years ago
13

Need help with my practice for a test please give awnser and show your work so i know how to do :)

Mathematics
2 answers:
docker41 [41]3 years ago
7 0

Answer:

Step-by-step explanation:

2 * 2 = 4u² (area of the central square)

2 * 2 : 2 = 2u² (area of one congruent triangle)

4 + 2 + 2 = 8u²

(u = units)

Naddik [55]3 years ago
6 0

Answer:

8

Step-by-step explanation:

first we need to calculate the area of the square: A = 2^2=4

After that we calculate the are of the area of ​​isosceles triangle: A=1/2*2*2=2

so the total area is 4+2+2=8 ( because we have 2 isosceles triangles )

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Evan has $4,000 that he wants to put into a saving account until he leaves dor college, which will be 6 years from now. How much
Bezzdna [24]

Steps:
1) 4,000 * .045 = 180
2) 180 * 6 = 1,080
3) 4,000 + 1,080 = 5,080

4)4,000 * .049 = 196
5) 196 * 6 = 1,176
6) 4,000 + 1,176 = 5,176
7) 5,176 - 5,080 = $96
Answer= $96
8 0
3 years ago
A loan of $1,020 was repaid at the end of 18 months with a check for $1,050. What annual rate of interest was charged?
marishachu [46]
We'll be assuming this is with simple interest.

now, a year has 12 months, thus in 18 months there are 18/12 years.

\bf ~~~~~~ \textit{Simple Interest Earned Amount}
\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &\$1050\\
P=\textit{original amount deposited}\to& \$1020\\
r=rate\to r\%\to \frac{r}{100}\\
t=years\to \frac{18}{12}\to &\frac{3}{2}
\end{cases}

\bf 1050=1020\left[ 1+r\left( \frac{3}{2} \right) \right]\implies \cfrac{1050}{1020}=1+r\left( \frac{3}{2} \right) \implies \cfrac{35}{34}=1+r\left( \frac{3}{2} \right)
\\\\\\
\cfrac{35}{34}-1=\cfrac{3}{2}r\implies \cfrac{1}{34}=\cfrac{3}{2}r\implies \cfrac{2\cdot 1}{3\cdot 34}=r\implies \cfrac{1}{51}=r
\\\\\\
r\%=100\cdot \cfrac{1}{51}\implies r\approx\stackrel{\%}{1.96078431372549}
8 0
4 years ago
Who ever makes polnareff there profile pic is my new friend DONT JUST ANSWER SOMETHING DUM LIKE I DONT KNOW WHO THAT IS OR OK OR
inysia [295]

Step-by-step explanation:

Explain how the author supports the argument that banning plastic bags in favor of paper ones is not a good solution to the problem of waste.

Use details from the article to support your response

7 0
3 years ago
Please help! I'm confused...
maw [93]

So since angle A is 120, so angles B+C=60 because there are 180 degrees in a triangle. So B:C is 2:1. So angle B is 40 and angle C is 20.

4 0
3 years ago
Please help with geometry
olga_2 [115]

Presumably l and m are parallel, so n and p are transversals across parallel lines.  They'll make the obvious congruent angles and supplementary angles (add to 180 degrees) that presumably the questions will be asking about.

1. Angle 11 and angle 16.   They're what's called vertical angles from a pair of crossing lines.  Vertical angles are congruent, so m∠16 = 113°

2. Angle 1 and 3.  Those are corresponding angles on a traversal of parallels, also congruent.  m∠3 = 78°.  You got this one right, good.

3. 7 & 8.  They're what's called a linear pair, so are supplemental.  180-129=51 so m∠8 = 51°.  You probably just subtracted wrong on this one.

4. 10 & 11.   I forgot what these are called; interior angles or some such.  Anyway they're supplementary so 180-77=103.  m∠11 = 103°

5.  13 & 12.  I forgot the name here too but they're congruent so m∠12 = 59°

6. 2 & 7.  Again congruent so m∠7 = 130°  

7.  I don't know why they insist on making geometry into algebra.  Here we have angles 1 & 8, which are congruent, so

5x + 2 = 3x + 28

5x - 4x = 28 - 2

2x = 26

x = 13

5 0
3 years ago
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