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OleMash [197]
3 years ago
9

The sum of three times a number and -4 is at least twice the number plus 8

Mathematics
2 answers:
kicyunya [14]3 years ago
8 0

Answer:

x<=12

Step-by-step explanation:

3x+(-4)<=2x+8

3x-4<=2x+8

3x-2x-4<=8

x-4<=8

x<=8+4

x<=12

kenny6666 [7]3 years ago
7 0

Answer:

12 ≤ x

Step-by-step explanation:

3x-4 ≥ 2x+8

3x-3x-4 ≥ 2x-3x+8

-4-8 ≥ -1x+8-8

-12 ≥ -1x

You divide -1 on both sides and get...

12 ≤ x

Because you have to switch the sign around. I hope this helps!!

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Divide 7/5 by 3/5<br> A.7/9<br> B.75/21<br> C.7/25<br> D.21/75
ankoles [38]
 ok turn 7/5 and 3/5 into a decimal
here let me help you

3/5 = 0.6
7/5 = 1.4


1.4 / 0.6 = 2.3 repeat


then turn it back into a fraction which is 2 3/10


this is how I do it by the way.
7 0
3 years ago
What is the total surface area of the solid?
mash [69]

Answer:

Step-by-step explanation:

The formula for determining the total surface area of a rectangular prism is expressed as

Total surface area = 2lw + 2wh + 2lh

Where

l represents the length = 16

w represents the width = 11

h represents the height = 10

Total surface area = (2 × 16 × 11) + (2 × 11 × 10) + (2 × 16 × 10) = 352 + 220 + 320 = 892 mm²

The formula for determining the total surface area of a triangular prism is expressed as

Total surface area = ph + 2b

p represents perimeter of base

h represents height of prism

b represents base area

From the information given,

h = 16

b = 1/2base × height = 1/2 × 11 × 8 = 44 mm²

to determine the perimeter of the base, we would determine the slant height, l by applying Pythagoras theorem.

Hypotenuse² = opposite side² + adjacent side²

l² = 11² + 8² = 185

l = √185 = 13.6

p = 13.6 + 11 + 8 = 32.6 mm

Total surface area = (32.6 × 16) + (2 × 44) = 521.6 + 88 = 609.6 mm²

6 0
3 years ago
Read 2 more answers
Help right now i need help with this
katovenus [111]

i saw the answer should be 20 character so the answer is

Loki

superman

batman

Ironman

Spiderman

Hulk

thor

Black widow

vision

scarlet witch

flash

green lantern

Thanos

star lord

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7 0
3 years ago
15. During the summer, Briana runs an ice cream shop. Her biggest seller is waffle ice cream cones. She charges $1.85 for a waff
Ivahew [28]

15) It is given that the charge of the waffle cone = $1.85

Charge per scoop of an ice cream = $0.60

Let C be the total cost.

So, total charge of one wafflce cone ice cream = charge of the waffle cone + (0.6 times number of scoops

C = 1.85 + 0.6x

16) To find the cost for 6 scoops of ice cream, put x = 6 in the above expression and simplify.

C = 1.85 + 0.6(6)

   = 1.85 + 3.6

   = 5.45

Hence, cost of 6 scoops of ice cream = $5.45.                                                                                

7 0
3 years ago
YALL THIS IS DUE
slamgirl [31]
Start with the bottom surface area, 7x7=49

then go to the triangles, base times height divided by 2, so (7x14)/2=49
and since there are 4 triangles, multiply 49 by 4 = 196 and add the area of the bottom, which all adds up to 245
8 0
3 years ago
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