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3 years ago

8

Can someone plz help me

1 answer:

Illusion [34]3 years ago

6 0

First rectangle:
Has 3 cubes in each 5 layers, and imagine it, so we have all dimension needed which is:
l=3 unit
w=1 unit
h=5 unit.
V=l×w×h
V=3×1×5
V=15 cubic inches.

Second rectangular:
Doing the same like that to get:
l=5 unit
w=1 unit
h=3 unit
V=15 cubic inches. As a result, there are no prism that are greater to each other, which mean that they have the same volume of 15 cubic inches. Hope it help!

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Keith_Richards [23]

Answer: A. Vertical angles

Step-by-step explanation:

They are vertically opposite angles.

Correct me if I am incorrect.

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3 years ago

Wei has $150.00 to make a garland using 60-cent balloons. He wants to purchase 100 blue balloons and some number of white balloo

poizon [28]

Answer:

The answer is 0.60b + 0.30w = 150; 60 + 0.30w = 150

Step-by-step explanation:

Wei can purchase 300 balloons.

The model used for the problem is .

Step-by-step explanation:

Let the number of white balloons = x

The cost of blue balloons and white balloons are 60 cent = $0.6 and 30 cents = $0.3 respectively.

Wei purchased 100 blue balloons and have $150 to buy both balloons

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3 years ago

Read 2 more answers

Given sin y = -4/5, where π < y < 3π/2, and cos x = 12/13, where 0 < x < π/2. Find the exact value of sin (x - y).

konstantin123 [22]

Answer:

Solution given:

sin y = -4/5

p/h=4/5

p=4

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b=√{5²-4²)=3

cos y = b/h=-3/5

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cos x=12/13

b/h=12/13

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3 0

3 years ago

A car is moving at a fixed speed. The distance D that the car covers is then directly proportional to the time T it moves.

worty [1.4K]

We were told that the distance $D$ is directly proportional to the time $T$ .

We write this mathematically as,

$D\propto T$

We can now introduce our constant of variation and write the equation for the direct equation as;

$D=kT$

where $k$ is the constant of variation or constant of proportionality.

We substitute $D=20$ and $T=15$ , in to the equation of variation to obtain the constant of proportionality.

That is;

$20=k\times15$

This implies that,

$\frac{20}{15}=k$

This simplifies to give us,

$k=\frac{4}{3}$

Now our equation of proportion becomes,

$D=\frac{4}{3}$

When T=20

$D=\frac{4}{3}\times20$

$D=\frac{80}{3}$

Writing this as a mixed number we obtain,

$D=26\frac{2}{3}$

This can also be rewritten as

$D=26.67$ correct to one decimal places.

Therefore the care covers $26.67$ miles in $20$ minutes.

6 0

3 years ago

10 Mason's can build a wall working 7 hours a day,in 12 days.In how many days can the work be completed by 14 persons working 8

Ronch [10]

Answer:

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14 men * 8 hr = 112 man-hrs/day

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Step-by-step explanation:

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3 years ago