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Firdavs [7]
3 years ago
13

Ive been trying at this for an hour help plz?​

Mathematics
1 answer:
balu736 [363]3 years ago
3 0

Answer:

x\geq -4

Step-by-step explanation:

3x-9\geq-21

add 9 to both sides

3x-9+9\geq -21+9

3x\geq -12

divide both sides by 3  

\frac{3}{3}x \geq \frac{-12}{3}

x\geq -4

Plot a solid dot on -4 on the number line because the inequality sign is great than or equal to and x the great than or equal to -4.

The arrow is then pointed to the left >>>>

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Which statement BEST describes why plant cells have a cell wall, but animal cells do not?
vladimir2022 [97]

Answer:

The main reason would be because they would have the ability to grow upwards which helps them get the sunlight and go through photosynthesis

Step-by-step explanation:

Plz like and Brainliest!

4 0
3 years ago
What is the volume of a cone with a radius of 3 and a height of 15? Use<br> 3.14 as pi*
frutty [35]

Answer:

141.3 (units³)

Step-by-step explanation:

formula for volume of a cone = V=1/3πr²h

1/3* 3.14 * 3² * 15 = 141.3

hope this helps!

6 0
3 years ago
The area of a triangular flower bed in the park has an area of
blagie [28]

Answer:

b = 24 ft

h = 10 ft

Step-by-step explanation:

120 = ½hb

120 = ½h(3h - 6)

240 = h(3h - 6)

240 = 3h² - 6h

 80 = h² - 2h

    0 = h² - 2h - 80

    0 = (h - 10)(h + 8)

    h = 10 ft or -8 ft

 we ignore -8 as it makes no sense for a triangle side length.

b = 3(10) - 6 = 24 ft

8 0
3 years ago
If the infinite curve y = e−9x, x ≥ 0, is rotated about the x-axis, find the area of the resulting surface.
dusya [7]
We are given with the equation
y = e^-9x with the restriction of x <span>≥ 0
If rotated about the x-axis the area of the resulting surface is
A = </span>π ∫ y² dx
Substituing
A = π ∫ (e^-9x)² dx
A = π ∫ e^-18x dx
The limits are from 0 to positive infinity.
4 0
4 years ago
A student finished 8 of her homework problems in class. If the ratio of problems she finished to problems she still had left was
nirvana33 [79]

Answer:

10

Step-by-step explanation:

8/4*5=10

5 0
3 years ago
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