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3 years ago

What is the result when the number 86 is decreased by 9%?

Mathematics

1 answer:

Vikki [24]3 years ago

6 0

78.26

Hope this helps!!!

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Find the area of the parallelogram. 8 m 2 m

nasty-shy [4]

If 2m and 8m are the base and height of the parallelogram, then the area is 16.

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3 years ago

So do yall know this?

ddd [48]

Answer:

Length: meter

Mass: Kilogram

Volume of a solid: Cubic meter

Volume of a liquid: Liters

Temperature: Degree Celsius

Time: second

The formula for calculating density:

$p = \frac{m}{v}$

7 0

3 years ago

Read 2 more answers

Solve the simultaneous equations: 3a-2b=14 12a+9b=39

kirill [66]

Use elimination
Multiply first equation by 4
12a - 8b = 56
12a + 9b = 39
Subtract both
-17b = 17
b = -1
Plug in -1 for b
3a - 2(-1) = 14
3a = 12, a = 4
Final answer: a = 4, b = -1

5 0

3 years ago

At the beginning of a walk, roberto and juanita are 7.77.7 miles apart. if they leave at the same time and walk in the same di

dem82 [27]

Roberto overtakes Juanita at the rate of (7.7 mi)/(11 h) = 0.7 mi/h. This is the difference in their speeds. The sum of their speeds is (7.7 mi)/1 h) = 7.7 mi/h.

Roberto walks at the rate (7.7 + 0.7)/2 = 4.2 mi/h.
Juanita walks at the rate 4.2 - 0.7 = 3.5 mi/h.

_____
In a "sum and diference" problem, one solution is half the total of the sum and difference. If we let R and J be the respective speeds of Roberto and Juanita, we have
R + J = total speed
R - J = difference speed
Adding these two equations, we have
2R = (total speed + difference speed)
R = (total speed + difference speed)2 . . . . . as computed above

4 0

4 years ago

write two division problems related to the multiplication problem below. 8×(-2)=-16

Mrac [35]

We can write two division problems related the given equation as follows.

Division problem one :

Here 8 is in multiplication with -2 on the left side.

so when we bring this 8 on the right side, we will have to apply opposite operation of multiplication which is division.

so dividing (-16) by 8 on the right side, we have:

$-2=\frac{-16}{8}$

Division problem two :

Here -2 is in multiplication with 8 on the left side.

so when we bring this (-2) on the right side, we will have to apply opposite operation of multiplication which is division.

so dividing (-16) by (-2) on the right side, we have:

$8=\frac{-16}{-2}$

7 0

3 years ago