Mean median mode please help

Leto [7]

70
0.4x=28
x=28/0.4
x=70

7 0

3 years ago

consider this quadratic equation x2+2x+7=21 the nuber of positive solutions to this equation are blank. the approximate value of

S_A_V [24]

Answer:

x²+2x+7-21=0

 x²+2x-14. =0

 x²+2x. =14

 x²+2x+1. =14+1

 (X+1)². =15

 X+1. =+/-√15

 X=-1+/-√15

X=-1+3.872983346207

 =2.872983346207(greatest solution) round it as possible

X=-1-3.872983346207

 =-4.872983346207

6 0

3 years ago

Help meeeeee. Ksjsjsjs:(

BaLLatris [955]

Answer:

a rule to know: a median divides the side into equal parts.

we know:

PR = -2a + 34

SR = 2a + 26

- based on the rule, SR is half of PR. in other words, PR is two times greater than SR.

so,

2SR = PR (now simply pluggin the expressions we have)

2(2a + 26) = -2a + 34 (solve the equation like any other equation prob.)

4a + 52 = -2a + 34

6a + 52 = 34

6a = -18

a = -3

- inorder to check if this is correct, simply reverse what we did. so pluggin the value of a to see if its correct.

3 0

3 years ago

A can is 3" in diameter and 7" tall. A shipper wants to ship cans in a box with 2 layers. 4 rows, and 5 cans per row. The box mu

GenaCL600 [577]

Given,

Diameter of the can = 3"
Height of the can = 7"
Looking at how the cans are arranged in the box, that is 4 x 5 (4 rows of cans [width] with 5 cans in each row [length])

The length of the box (L) = 5 cans multiplied by each can's diameter = 5 × 3" = 15"
The width of the box (W) = 4 cans multiplied by each can's diameter) = 4 × 3" = 12"
The height of the box (H) = 2 layers of cans = 2 cans multiplied by each can's height = 2 × 7" = 14"

Therefore, the volume of the box = Length (L) × Width (W) × Height (H) = 15" × 12" × 14" = 2520 inches³

Volume of the box = 2520 inches³

=====================================================

There is also an alternative method to calculate the volume of the box:

Consider each can. Although the can is cylindrical, each can would occupy the space required by a cuboid.

So, for each Cuboid space, the diameter of the can will be the length and width of the cuboid and the height of the can will be the height of the cuboid.

Therefore, for each can,

Length (L) = 3"
Width (W) = 3"
Height (H) = 7"

Volume occupied by one can (that is a cuboid) = L × W × H = 3" × 3" ×7" = 63 inches³
There are 40 such cans in total inside the box; therefore,

Volume of the box = 40 × 63 inches³ = 2520 inches³

5 0

3 years ago

A farmer grows 142 Green pepper plants and 100 a red pepper plants each plant produces about 26 peppers the farmer plans to sell

HACTEHA [7]

Answer:

$18876

Step-by-step explanation:

Given : 142 green pepper plants & 100 red pepper plants, each plant produces 26 peppers, each pepper sells for $3.

Total Peppers = Total pepper plants x peppers per plant

(142 + 100) x 26 = 242 x 26 = 6292

Total expected money income estimate = Total peppers x price per pepper

= 6292 x 3 = 18876

3 0

3 years ago