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valina [46]
3 years ago
8

Which is best estimate of each percent? 21/ of 387?

Mathematics
1 answer:
Phoenix [80]3 years ago
3 0
81.27 is the answer to 21% of 387 so a good estimate would be 82
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Find three consecutive even integers whose sum is −24
labwork [276]

Answer: -10,-8,-6

Step-by-step explanation:

Let be:

 x, x+2 and  x+4 the three consecutive even integers whose sum is -24

Then, we can write this expression:

 x+(x+2)+(x+4)=-24

Now, we must solve for "x":

3x+6=-24\\\\3x=-24-6\\\\3x=-30\\\\x=\frac{-30}{3}\\\\x=-10

Then you get that the others integers are:

x+2=-10+2=-8

x+4=-10+4=-6

Therefore, the  three consecutive even integers whose sum is -24 are:

-10,-8,-6

6 0
4 years ago
Read 2 more answers
Which of the following is the inverse of y = 2/3x + 1
Vesnalui [34]

Answer:

Y=3/2x - 3/2

Step-by-step explanation:

To find the inverse, switch the x and y in the equation. Then solve for y.

Y=2/3x+1

X=2/3y+1

X-1=2/3y

3/2(x-1)=y

3/2x-3/2=y

6 0
3 years ago
Read 2 more answers
Answer number 1 or 2 or both please<3
m_a_m_a [10]

Answer:

1. 1.96 g/L

2. 1 g/cm³

Step-by-step explanation:

Density is found by dividing mass by volume: d = m/v.

1.

We know that the mass is 0.196 grams, while the volume is 100 mL.

Converting the volume to liters, we get:

100 mL = 0.1 L

Then, applying our density formula:

d = m/v

d = 0.196 g / 0.1 L = 1.96 g/L

2.

Here, we know that the mass is 27 grams. However, we don't know the volume, which we need to find.

The block of wood is 3 cm on all sides, which means it's a cube. The volume of a cube is denoted by V = s³, where s is the side length. Here, s = 3, so V = s³ = 3³ = 27 cm³.

Applying our density formula gives:

d = m/v

d = 27 g / 27 cm³ = 1 g/cm³

<em>~ an aesthetics lover</em>

7 0
3 years ago
A vet weighs two puppies. The small puppy weighs 4 2/3 pounds. The large puppy weighs 4 2/3 times as much as the small puppy. Ho
Maksim231197 [3]
4 2/3 lbs = small puppy weight
4 2/3 times the small puppies weight = large puppy weight
          4 2/3 × 4 2/3  or 4 2/3^2  = 21.77777.... or in mixed number is 21 7/9 lbs
4 0
4 years ago
Find the surface area of a cylinder with a base radius of 2 cm and a height of 3 cm.
jek_recluse [69]

Answer: 62.8cm^2

Step-by-step explanation:

The surface area of a cylinder is calculated by 2πrh+2πr2

where π is a constant, given as 3.14; h is the height, given as 3cm and r is radius, given as 2cm.

Therefore, rh = 3 x 2= 6 cm ^2 while r^2 =2 × 2= 4 cm^2.

Slot the values into the formula:

V= 2 (3.14) x 6 + 2 (3.14) x 4

V=37.68 + 25.12

V=62.8cm ^2

I hope this helps

6 0
3 years ago
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