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Nina [5.8K]
3 years ago
15

Will mark brainliest has to be correct. ​

Mathematics
1 answer:
yarga [219]3 years ago
7 0
Answer:
x=12
Step by step explanation:

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Buddy painted (1/5) of the 320 nutcrackers.How many nutcrackers did buddy paint
just olya [345]

Answer:

64

Step-by-step explanation:

Given that,

Buddy painted (1/5) of the 320 nutcrackers.

We need to find how many nutcrackers did buddy paint. It can be calculated by finding (1/5) of 320.

x=\dfrac{1}{5}\times 320\\\\=64

Hence, he painted 64 nutcrackers.

3 0
3 years ago
Read 2 more answers
The area of a square is increasing at the constant rate of 16sq.ft./min. When the perimeter of the square is 36ft, how fast is t
bixtya [17]

Answer:

The perimeter of square is increasing by 3.76ft/min and then by 3.4 ft/min.

Step-by-step explanation:

Given that area of square is increasing at a rate of 16 sq ft/min.

Given that final perimeter is 36ft

Perimeter of a square = 4 \times side = 36

So, side, a' = 9 ft

We know that area of a square is given by the formula:

A = side^2 = a^2 (If we let side = a units)

Change in area =

a'^2 - a^2\\\Rightarrow 9^2 - a^2 = 16\\\Rightarrow 81 - 16 = a^2\\\Rightarrow a = 8.06\ ft

So, side got changed from 8.06ft to 9 ft.

So, perimeter when side was 8.06 ft:

4 \times 8.06 = 32.24\ ft

Hence, increase in the perimeter when perimeter is 36 ft is = 36 - 32.24 = 3.76 ft

For finding Next increase:

area gets changed from 81 sq ft to 81+16 = 97 sq ft

So, new side = \sqrt{97} ft = 9.85 ft

Next increase in perimeter = 4 (New side - Old side)

= 4 (9.85 - 9)

= 3.4 ft/min

6 0
3 years ago
PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER PLS GIVE ME A STEP BY STEP EXPLANATION!!
AveGali [126]

Answer:

D

Step-by-step explanation:

we take the base as a right angled triangle with sides 6mi , 8 mi and hypotenuse 10 mi.

area of base=1/2×6×8=24 mi²

volume=base area ×height

=24×8

=192 mi³

8 0
3 years ago
Read 2 more answers
Justin recently drove to visit his parents who live 300 miles away. On his way there his average speed was 11 miles per hour fas
Lynna [10]

Answer:

x=1

Step-by-step explanation:

5 0
3 years ago
Solve this system of equations using the substitution method<br>y=x+7<br>-2x-11=y​
ryzh [129]

Answer:

x=-6, y=1

Step-by-step explanation:

Let's solve your system by substitution.

y=x+7;−2x−11=y

Step: Solve y=x+7 for y:

y=x+7

Step: Substitute x+7 for y in −2x−11=y:

−2x−11=y

−2x−11=x+7

−2x−11+−x=x+7+−x(Add -x to both sides)

−3x−11=7

−3x−11+11=7+11(Add 11 to both sides)

−3x=18

−3x/ −3 = 18/ −3  (Divide both sides by -3)

x=−6

Step: Substitute−6 for x in y=x+7:

y=x+7

y=−6+7

y=1  (Simplify both sides of the equation)

Answer:

x=−6 and y=1

 

3 0
3 years ago
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