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algol [13]
3 years ago
13

Help pleaseeee, I don't understand​

Mathematics
1 answer:
miv72 [106K]3 years ago
3 0

Answer:

B.

Step-by-step explanation:

2x+4-1

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A test tube is cylindrical in shape with a length of 152 mm and a radius of 6.5 mm. What is the volume of the test tube? Report
vazorg [7]

Answer:

20165

Step-by-step explanation:

Given:

Length/height (h) of cylindrical test tube = 152 mm

Radius of cylindrical test tube = 6.5 mm

Volume = \pi r^2h

Required:

Volume of cylinder to nearest whole number

Solution:

The volume is given as V = \pi r^2h

Take π as 3.14 and plug the values of r and h into the volume formula.

V = 3.14*6.5^2*152

V = 3.14*6.5*152 = 20165.08

Volume of the test tube = 20165 mm³ (nearest whole number)

5 0
3 years ago
Direct variation or not a direct variation<br><br> y=5/x
MrRissso [65]

Answer:

not direct variation

Step-by-step explanation:

The equation for x and y in direct variation is

y = kx ← k is the constant of variation

y = \frac{5}{x} is not in this form, thus not direct variation.

The equation for x and y varying inversely is

y = \frac{k}{x} ← k is the constant of variation

y = \frac{5}{x} is in this form and represents inverse variation

7 0
3 years ago
Please help, and plz don't be saying this is the right answer if u dont know for sure.
zepelin [54]

Answer:

135 degrees

Step-by-step explanation:

(8x-7)+(12x+57)=180

combine like terms

20x+50 = 180

subtract 50 on both sides

20x = 130

divide by 20

x = 130/20

x = 13/2

x = 6.5

cpq = 12x+57

cpq = 78 + 57

cpq = 135

4 0
3 years ago
Find the x- and y-intercept of the line. -7/5x -4y = 7 A. x -intercept is -7/4; y-intercept is 5 B. x -intercept is 5; y-interce
DochEvi [55]
Put y=0
-7/5x-0=7
x=7*-5/7=-5
x intercept=-5
put x=0
-0-4y=7
y=-7/4
y intercept =-7/4
4 0
3 years ago
Differentiate between gymnosperms and angiosperms. Give one similarity and one difference.
vampirchik [111]

Answer:

Angiosperms, also called flowering plants, have seeds that are enclosed within an ovary usually a fruit while gymnosperms have no flowers or fruits, and have unenclosed or seeds on the surface of scales or leaves. Gymnosperm seeds are often configured as cones.

Step-by-step explanation:

3 0
2 years ago
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