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Anna71 [15]
2 years ago
13

Find the value of x.

Mathematics
1 answer:
polet [3.4K]2 years ago
7 0

Answer:

x = 20

Step-by-step explanation:

7x° + (x + 20)° = 180° (linear pair)

Solve for x

7x + x + 20 = 180

Add like terms

8x + 20 = 180

8x + 20 - 20 = 180 - 20

8x = 160

8x/8 = 160/8

x = 20

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Can someone help me with these please.
ELEN [110]

Answer: Barbara did not include a variable in the term 1.49, which must represents the number of bottles of iced tea she needs to sell.

Step-by-step explanation:

Let be "x" the number of bottle of water Barbara needs to sell and "y"  the number of bottle of iced tea she needs to sell.

She sells iced tea for $1.49 per bottle and water for $1.25 per bottle, so she can write the following equation in order to calculate the number of bottles she needs to sell to earn $100:

1.25x + 1.49y = 100

Since Barbara wrote this equation:

1.25x + 1.49 = 100

We can conclude that the error Barbara made in writing the equation was: She did not include a variable in the term 1.49, which must represents the number of bottles of iced tea she needs to sell.

8 0
3 years ago
Help plss I only need 5
pochemuha

Answer:

Acute scalene triangle

Step-by-step explanation:

The triangle is acute because all of the angles are less than 90 degrees.

It is scalene because the 3 sides are all different lengths.

4 0
3 years ago
The straight line, Line L has an equation of 4x+y=7. Find the equation of the straight line perpendicular to Line L that passes
Jobisdone [24]

Answer:

Step-by-step explanation:

y = -4x + 7

perp. 1/4

y - 3 = 1/4(x + 8)

y - 3 = 1/4x + 2

y = 1/4x + 5

3 0
2 years ago
For the following right triangle, find the side length x.
lesantik [10]

Answer:

x= 5√7

Step-by-step explanation:

Use the Pythagorean theorem

16^2= 9^2 + x^2

x^2=175

x= √175

x= 5√7

6 0
2 years ago
Leroy borrowed P1500 at an annual simple interest rate of 12%. He paid P270 in interest. For what time period did Leroy borrow t
victus00 [196]

Answer:

C. 18 months

Step-by-step explanation:

Given data

Principal= P1500

rate= 12%

Simple interest= P270

We know that

Simple interest= PRT/100

substitute

270= 1500*12*T/100

cross multiply we have

270*100= 1500*12*T

27000= 18000 T

divide both sides by 18000

T= 27000/18000

T=1.5 years

That is 12 months + 6 months

in all = 18 months

The time is C. 18 months

6 0
3 years ago
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