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3 years ago

Pre algebra 8th Grade (with picture of question) please help, It would be very much appreciated :)

Mathematics

1 answer:

masha68 [24]3 years ago

7 0

Try creating a table for each Town and see where their values are the same. I'd write it all out but it would be extremely messy so best to just tell you that you need to make a table organized by snowfall each hour. Hour 1 for Town 1 would start at 5 and then got to 11, etc. Town 2 would start at 6 and at hour 2 be at 8.

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A dozen apples costs $2.25. At this rate, how much would 4 apples cost?

AlekseyPX

Answer:

$0.75

Step-by-step explanation:

dozen=12

12=$2.25

1=2.25/12

4=2.25/12*4

=$0.75

8 0

3 years ago

4. 8.G.3.9 This cone and sphere have equal volumes. What is the radius of the sphere?

lozanna [386]

Answer:

the radius of the sphere is 12 cm.

Step-by-step explanation:

IN A CONE

vertical height (h) = 27 cm

radius (r) = 32 / 2 = 16 cm

Now the volume of cone is

= 1/3 *h*π*r²

= 1/3 * 27 *π *16²

= 2304π cm³

Also by the question the cone and the sphere have equal volumes so

volume of sphere = volume of cone

= 2304 π cm³

OR, 4/3 πr³ = 2304 π

4/3 * r³ = 2304

r³ = 2304 * 3 / 4

r³ = 1728

r = ∛1728

r = 12 cm

hope it helps :)

8 0

3 years ago

Give the linear system: 3x + 7y = 20 x ? 4y = 9 Identify the values for the elements in the coefficient matrix: A = a11 a12 a21

laiz [17]

Answer: a11 = 3, a12 = 7, a21 = 1, a22 = -4

Explanation:

3x + 7y = 20

x - 4y = 9

A = $\left[\begin{array}{ccc}3&7&20\\1&-4&9\end{array}\right]$

column 1 column 2

row 1: (a11) 3 (a12) 7

row 2: (a21) 1 (a22) -4

4 0

3 years ago

Read 2 more answers

Leah is 5 1/2 feet tall Leah's sons height is 2/3 her height. What is s, her sons height, in feet?

N76 [4]

Her son is about 3 feet tall

7 0

4 years ago

Which value of b will cause the quadratic equation x2 + bx + 5 = 0 to have two real number solutions? –5 –3 3 4

MaRussiya [10]

Answer:

-5

Step-by-step explanation:

For a quadratic equation to have two real number solutions, the discriminant must be positive. The discriminant of a quadratic equation is:

$b^2-4ac$

This means that b^2 must be larger than 4ac. Since in this case 4ac is 4(1)(5)=20, b must be -5 out of the answer choices given. Hope this helps!

6 0

3 years ago

Read 2 more answers