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slavikrds [6]
3 years ago
11

Which is the solution of the quadratic equation (4y - 3)2 = 72?

Mathematics
1 answer:
ASHA 777 [7]3 years ago
8 0

Answer: It would be y=39/4

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What is the lateral area of the pyramid?
Aleks04 [339]

We have two triangles with base 9ft and height 12.3ft and two triangles with base 11ft and height 11.9ft.

The formula of an area of a triangle:

A_\triangle=\dfrac{1}{2}bh

Triangle #1:

b = 9ft and h = 12.3ft. Substitute:

A_1=\dfrac{1}{2}(9)(12.3)=55.35ft^2

Triangle #2:

b = 11ft and h = 11.9ft. Substitute:

A_2=\dfrac{1}{2}(11)(11.9)=65.45ft^2

The Lateral Area:

L.A.=2A_1+2_A2\\\\L.A.=2(55.35)+2(65.45)=241.6\ ft^2

<h3>Answer: B. 241.6 ft².</h3>
6 0
3 years ago
Read 2 more answers
I need to know the minus 2 ounces
Gennadij [26K]

Answer:

Step-by-step explanation:

10 is your answer

7 0
3 years ago
PLEASE HELP
miss Akunina [59]

In the smallest of the three triangles (with sides a,b,3) we have

a^2+3^2=b^2

In the second-largest triangle (with sides a,108), the length of the missing side is \sqrt{a^2+108^2}. Then in the largest triangle (with sides b,111,\sqrt{a^2+108^2}), we have

b^2+\left(\sqrt{a^2+108^2}\right)^2=(108+3)^2=111^2

\implies b^2+a^2+108^2=111^2

\implies b^2+a^2=657

Equivalently, we have

(a^2+9)+a^2=657\implies 2a^2=648\implies a^2=324\implies a=18

In turn, we find

b^2=18^2+3^2=298\implies b=\sqrt{333}=3\sqrt{37}

6 0
3 years ago
The length is 3 inches more than the width period the width is 2 inches more than the height. The volume is 120 in.³. What is th
Debora [2.8K]

Answer:

the dimension of the box is : 8 by 5 by 3

Length = 8

Width = 5

Height = 3

Step-by-step explanation:

Let x,y and z represent the length, width and height of the box.

Given;

The length is 3 inches more than the width

x = y+3 .......1

the width is 2 inches more than the height

y = z + 2

z = y-2 .........2

Volume = length×width×height = xyz = 120 in^3

xyz = 120 ........3

Substituting equation 1 and 2 into 3

(y+3)×y ×(y-2) = 120

y(y^2+y-6) = 120

y^3 + y^2 - 6y - 120 = 0

Solving the polynomial equation we have;

y = 5

From equation 1;

x = y+3 = 5+3

x = 8

From equation 2;

z = y-2 = 5-2

z = 3

Therefore, the dimension of the box is

8 by 5 by 3

Length = 8

Width = 5

Height = 3

4 0
3 years ago
Could you answer this question cause i need it for math
alina1380 [7]

Step-by-step explanation:

5p/7-18=-43

5p/7=-43+18

5p/7=-25

5p=-25×7

5p=-175

p=-175/5

p=-35

not sure lol

5 0
3 years ago
Read 2 more answers
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