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seropon [69]
3 years ago
13

Please help I’m not good at triangle angles

Mathematics
1 answer:
wlad13 [49]3 years ago
6 0

Answer:

Step-by-step explanation:

Two of the angles are just numbers and you add them.

The third is a term and you add it along with the other two.

The total is always 180 for a triangle.

80 + 58 + 5x - 3 = 180

138 + 5x - 3 = 180              Combine on the left

135 + 5x = 180                   Subtract 135 from both sides

5x = 180 - 135                    Combine the right

5x = 45                               Divide by 5

x = 9

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F(x)=2x+3/4x+5 find f(-9)<br><br>pls solve it ​
Marysya12 [62]

Answer:

15/31

Step-by-step explanation:

substitute -9 were there's x in the function

f(-9)=2(-9)+3/4(-9)+5

=-18+3/-36+5

=-15/-31

the negatives cancel giving you

15/31

4 0
3 years ago
Which equation has infinitely many solutions?
RideAnS [48]

Answer:

it might be c or a i go with c

Step-by-step explanation:

not for sure just a best guess

6 0
3 years ago
PLEASE HELP Two prisms are composed to form a V shape. The thickness of each prism is 1 unit, and width of each prism is 2 units
Grace [21]

Answer:

  7 units, 8 units

Step-by-step explanation:

Apparently, the cross section of each prism is a rectangle 1 unit by 2 units. Hence the total length will be ...

  (30 units³)/((1 unit)(2 units)) = 15 units

Two numbers that differ by 1 and have a sum of 15 are 7 and 8.

The lengths of the prisms are 7 units and 8 units.

7 0
3 years ago
Please give me the answer to 5 x 25
loris [4]
The answer to this question is 125
7 0
3 years ago
Read 2 more answers
Lindsay invested $4500 at 4% interest compounded annually.
goldfiish [28.3K]

Answer:

\$2,161.1

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=10\ years\\P=\$4,500\\ r=0.04\\n=1  

substitute in the formula above  

A=\$4,500(1+\frac{0.04}{1})^{1*10}  

A=\$4,500(1.04)^{10}

A=\$6,661.10    

Find the interest

I=A-P

I=\$6,661.10-\$4,500=\$2,161.1

5 0
3 years ago
Read 2 more answers
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