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2 years ago

Find the volume of the pyramid. Write your answer as a fraction or mixed number.

Mathematics

1 answer:

tia_tia [17]2 years ago

6 0

Answer:

V=lwh /3

Step-by-step explanation:

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If the sum of three consecutive multiples of 7 is 945. Find the smallest among them

Firlakuza [10]

consider first number is = x

formula,

(n / 2)(first number + last number) = sum,

7/2(x+x+6)= 945

2x+6= 945×2/7

2x+6 = 270

2x= 270-6

x=264/2= 132

Answer the smallest number is 132.

8 0

2 years ago

Write the equation of a circle with center (6,4) that passes through the coordinate (2,1). In your final answer, include all of

kari74 [83]

R^2=(x-6)^2+(y-4)^2

r^2=(6-2)^2+(4-1)^2, r^2=16+9=25

(x-6)^2+(y-4)^2=25

8 0

2 years ago

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A batch consists of 12 defective coils and 88 good ones. Find the probability of getting two good coils when two coils are rando

Allushta [10]

<u>Answer:</u>

The probability of getting two good coils when two coils are randomly selected if the first selection is replaced before the second is made is 0.7744

<u>Solution:</u>

Total number of coils = number of good coils + defective coils = 88 + 12 = 100

p(getting two good coils for two selection) = p( getting 2 good coils for first selection ) $\times$ p(getting 2 good coils for second selection)

p(first selection) = p(second selection) = $\frac{\text { number of good coils }}{\text { total number of coils }}$

Hence, p(getting 2 good coil for two selection) = $\frac{88}{100} \times \frac{88}{100} =\bold{0.7744}$

5 0

2 years ago

Find the 78th term of the arithmetic sequence –4,-2,0,...

MArishka [77]

The number is increasing by 2 every time.

78 x 2 = 156

-4 + 156 = 152

The 78th term is 152

8 0

2 years ago

When four times a number is decreased by 9, the result is 19. What is the number?

Novay_Z [31]

Answer:

Step-by-step explanation:

Working backwards:

19 + 9 = 28

28/ 4 = 7

Checking work:

7 x 4 = 28

28 - 9 = 19

8 0

2 years ago

Read 2 more answers