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AURORKA [14]
2 years ago
5

A family reduced its normal monthly gas bill of 70$ by 9$ . What percent decrease does this represent ? Round to the nearest ten

th of a percent
Mathematics
1 answer:
BigorU [14]2 years ago
5 0

Answer:

12.9%

Step-by-step explanation:

\frac{9}{70}*100\%\\\approx 12.9 \%

You might be interested in
Find the perimeter of each of the two non congruent triangles where a=15,b=20 and a=29
Alborosie

Answer:

b. about 63.9 units and 41.0 units

Step-by-step explanation:

In question ∠a= 29° and Side of a= 15 and b= 20

Using sine rule of congruence of triangle.

⇒ \frac{a}{sin A} = \frac{b}{sin B} = \frac{c}{sin C}

⇒ \frac{15}{Sin 29} = \frac{20}{sin B}

Using value of sin 29°

⇒ \frac{15}{0.49} = \frac{20}{sin B}

Cross multiplying both side.

⇒ Sin B= \frac{20\times 0.49}{15} = 0.65

∴ B= 41°

Now, we have the degree for ∠B= 41°.

Next, lets find the ∠C

∵ we know the sum total of angle of triangle is 180°

∴∠A+∠B+∠C= 180°

⇒ 29+41+B= 180

subtracting both side by 70°

∴∠C= 110°

Now, again using the sine rule to find the side of c.

\frac{b}{SinB} = \frac{c}{SinC}

⇒\frac{20}{sin41} = \frac{C}{sin110}

Using the value of sine and cross multiplying both side.

⇒ C= \frac{20\times 0.94}{0.65} = 28.92

∴ Side C= 28.92.

Now, finding perimeter of angle of triangle

Perimeter of triangle= a+b+c

Perimeter of triangle= (15+20+28.92)= 63.9

∴ Perimeter of triangle= 63.9 units

7 0
2 years ago
Which gives the prices in order, from least to greatest
k0ka [10]

Answer:

is there a picture to go with the problem?

3 0
3 years ago
Guys this is a really hard one.....
Setler79 [48]

Answer:

The answer is <u>2</u>

Step-by-step explanation:

LOL XD

Have a nice day!!!!

3 0
3 years ago
Read 2 more answers
find 44% of 8.79. user: find 8% of 2.36. user: darren teaches a class of 25 students. he assigns homework 3 times a week, and ea
Andrews [41]
44% of 8.79 = 
0.44 (8.79) = 3.87 (thats rounded) 

8% of 2.36 =
0.08 (2.36) = 0.19 (rounded)

25 students, homework 3 times per week, 12 problems each assignment 
3(12) = 36 problems per student...36(25) = 900 problems for 25 students.
ur answer is 900

7 0
3 years ago
Please answer this question..........
Umnica [9.8K]
In order to find the y-intercept, replace x by 0.

So, for first option:
f(0) = 7(1) - 2 = 5

For second option:
f(0) = -3(1) - 5 = -8

For third option:
f(0) = 5(1)-1=4

For Fourth option:
f(0) = -5(1) + 10 = 5

For Fifth Option:
f(0) = 2(1) + 5 = 7

So, option 1 and 4 have the y-intercept (0,5)
5 0
3 years ago
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