MATHEMATICS MIDDLE SCHOOL

Solve for x: −3x + 3 < 6 A.x > −1
B.x < −1
C. x < −3
D. x > −3

Answers

Answer 1
Answer: -3x+3<6
-3x<3
-x<1
x>-1 (A)

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Mr. Robinson has 20 students in his martial arts class. The ratio of boys to girls is 4:1. How many boys and girls are in Mr. Robinson's class?a. 15 boys, 5 girlsb. 5 boys, 15 girlsc. 16 boys, 4 girlsd. 4 boys, 16 girlsWhich of the following equations is an example of the distributive property?a. (5)(3) = (3)(5)b. 5+3 = 3+5 c. (5)(1+2) = (5)(1) + (5)(2)d. 15=15

What is this question

Answers

the equivalent fraction would be 2/4. as you can see, 2/4 can be simplified down to 1/2. if you filled up half of the fraction bar, you would have 2 boxes of 1/4 filled. 1/4 and 1/4 is 2/4

Light travels 300,000 km/s. The planet Mars is about 228,000,000 km from the sun. How would you find out how many minutes it takes light from the Sun to reach Mars?

Answers

Answer:

12.67 minutes

Step-by-step explanation:

Time taken is given by distance divided by speed

Given distance of 228, 000, 000 km and speed of light as 300, 000 km/s then time will be

Time=228, 000, 000/300, 000=760 seconds

Conversion

60 seconds make up 1 minute

760 seconds will be 760/60

Time=760/60=12.666666666666

Rounded off, this is 12.67 minutes

Y+2=x (tell whether x and y show direct variation)

Answers

This shows a direct variation since 2 + y = x, hence as y increases, the x also increases.

Proportionality or variation is state of relationship or correlation between two variables It has two types: direct variation or proportion which states both variables are positively correlation. It is when both the variables increase or decrease together. On the contrary, indirect variation or proportion indicates negative relationship or correlation. Elaborately, the opposite of what happens to direct variation. One increases with the other variables, you got it, decreases. This correlations are important to consider because you can determine and identify how two variables relates with one another. Notice x = y (direct), y=1/x (indirect)

Answer:

zhxCJHdszjhcccckddddddddxdfffssdx

Step-by-step explanation:

HELP WILL MARK BRAINLIEST 72.74mm = blank m

Answers

1 meter = 1000 millimeters, so set an equal proportion. x / 72.74mm = 1m / 1000mm. Cross multiply to get 1000x = 72.74; divide both sides by 1000 to get x = 0.07274 m or if you're rounding, 0.07m

Answer:

.074 I believe

Step-by-step explanation:

HOW MANY TENTHS ARE IN 13.58

Answers

5 tenths, because look at this:

13.58. Tenths is after the decimal. Hope this helps!

There are 135.8 of them.

A sphere has a radius of 9 feet. A second sphere has a radius of 6 feet. What is the difference of the volumes of the spheres?

Answers

Well the formula to find the volume of a sphere is 3/4(pi)r^3
sphere with the radius of 9: 3/4(pi)9^3 = 3053.63
sphere with the radius of 6: 3/4(pi)6^3 = 904.78
the difference: 2148.85
Difference of the volumes of the spheres=volume greater sphere - volume smaller sphere.

Volume of a sphere=(4/3)πr³

Difference of the volumes of the spheres=(4/3)πr₁³ - (4/3)πr₂³=(4/3)π(r₁³-r₂³)

Data:
r₁=9 ft
r₂=6 ft

then :

Difference of the volumes of the spheres=4/3π[(9 ft)³ - (6 ft)³]=(4/3)π(513 ft³)=
≈2148.85 ft³.


Answer: 2148.85 ft³
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